HOA HDX User Manual (PDF - 2mg)
Contents
1. 1 2 Connect the coupler to the end of the excavator s arm Route the hoses from the coupler up the excavator arm and boom then down to the engine compartment that houses the low pressure pilot system Install the control valve and filter in the engine compartment This will provide easy access to the low pressure pilot system as well as protection from the elements Mount the 3 light switch box in the cab of the excavator Helpful Hints Before Beginning Installation M Fully read the nstallation Instructions section pages 14 28 before beginning the installation v Determine where you will need to mount the control valve and filter these components are mounted in the main engine compartment near the excavator s pilot pressure system v Determine where in the excavator cab you will need to mount the switch box IV Make sure you have the proper fittings needed to tie into the pilot pressure system and the hydraulic return system These fittings are not supplied with the Coupler Installation Kit V Check to determine if the tubular hose bracket can be welded to the excavator s H link IV Determine the best route for running the hoses on the excavator The hoses should not interfere with other excavator components DANGER Failure to comply with information in this HOA Manufacturing HDX Cast Coupler User Manual may result in injury death damage to property and or damage to the coupler Ensure all personnel hav2. MANUFACTURING HDX Cast Coupler Installation amp User Manual 2013 HOA Manufacturing Inc Eugene OR USA All rights reserved Any use of the editorial or pictorial content of this publication is Strictly prohibited without express written permission from HOA Manufacturing Inc Printed in the USA 02 13 DON HDX IUM 01 20130216 TABLE OF CONTENTS INTRODUCTION Welcome amp Contact Information rrrrrnnnrornrnnnnrnrrrnnnnenrrnnnnennnnnnnner 1 Important Notes amp Warranty Information cccccseeeeseeeeeeeeeseeees 2 GENERAL INFORMATION Safety Messages amp Recommendations cccccseeeeeeeeeeeeeeeaeeeeees 3 4 Part Identification Gai setestessedieerdenwccussuebseasedvedvneancondeieovdedueebewseuds 5 9 Hydraulic amp Electrical SpeCificationS cccccccssseeeeeeeeeeeeeeeeeeeeeenes 10 HDX Coupler FamiliariZation ccccccccssececceeseseeeeseeeeeeeeeeeeeeees 11 12 Recommended Welding Procedures ccccseececeeeeeeceeeeeeeeeeeeeaees 13 INSTALLATION INSTRUCTIONS Installation Prenat AUON arr 14 15 RenovIngAUachmen areas 16 Connecting Coupler to Excavator Arm rrrnrrnnnnnnvnnrnnnnrevnnnnnnvnnnnnen 17 Installing Hose Brackets are 18 19 Hydraulic Hose Assembly ccccccseeeceseeceeeecceseeseueeceeseeseeeeseaeeess 20 AVara ul HOSE FOUGNER 21 23 Control Valve Filter amp Switch BOX rrnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennennennennnn 24 28
3. OPERATION amp MAINTENANGE VWamngs amp PFrECAUIMS arver 29 30 SWIIGN BOX OVERVIEW uit ue DUR GOLF A UG dw 31 Engaging AEA 32 35 Disengaging Attachment ccccccccsssecceeeeceeseeseeeeeseeeeseeeeeeeessaeees 36 Lifting Loads with Coupler Installed cccccsseseeeeesseeeeeeeeeeeeeeees 37 Maintenance Procedures cccccccccseececcseeecceeeeecsaueeecseeseessuseesaaneess 38 39 TROUDICS MOO UNG vare 40 HOA Manufacturing HDX Cast Coupler Installation amp User Manual Congratulations on your purchase of the HDX Cast Coupler The HDX coupler is a high quality well engineered product that will provide you with many years of excellent service The HDX coupler will deliver enhanced productivity of your excavator This coupler brings you the design quality and workmanship you expect from a HOA Manufacturing product The advantages of the HDX coupler become apparent when a bucket or attachment change is necessary These advantages include e A locking mechanism with a locking lever that engages under and around the attachment pin e A positive locking system which pushes against the rear machine pin and away from the front pin keeps the coupler tight at all times e A check valve that helps to prevent the possibility of an accidental release of the attachment e A lifting eye which allows you to operate the machine as a lifting device without the attachment provides increased lifting power w
4. extends coupler is shut off retracts ALWAYS OPERATE COUPLER IN LOCK POSITION 31 HOA Manufacturing HDX Cast Coupler Installation amp User Manual Operation amp Maintenance Engaging Attachment The HDX coupler locks into place by engaging the front lever over and around the stick pin The rear lever will then engage under and around the attachment s link pin This will lock the stick pin against the C casting This section details how to properly engage an attachment with the HDX coupler The rear lever engages under and around the attachments link pin The front lever engages in front of causing the stick pin to lock into the attachment s stick pin to prevent the c casting accidental disengagement DANGER Failure to properly engage an attachment may result in serious injury or death The attachment may drop without warning if the coupler is not properly engaged with the attachment Read this section carefully and perform the following steps each and every time you change attachments 1 Engage attachments completely clear of all personnel 2 Test connections away from all personnel 3 Never swing coupled attachments over workers heads HOA Manufacturing HDXT Cast Coupler Installation amp User Manual 32 Operation amp Maintenance Engaging Attachment 33 Open the coupler lever by placing the control box switch in the release position The buzzer alarm will sound and the red light will glow Allow
5. Do not force the coupler off of the attachment DANGER Always disengage attachments away from personnel HOA Manufacturing HDX Cast Coupler Installation amp User Manual 36 Operation amp Maintenance Lifting Loads with Coupler Installed Follow these steps to properly lift loads with the HDX coupler 37 Always disengage the attachment when lifting loads with a HDX coupler installed on the excavator Curl the coupler inward when lifting loads This is the preferred method for lifting HOA Manufacturing HDX Cast Coupler Installation amp User Manual Do not use the attachment hook while coupled on an attachment and do not use the coupler s lifting eye while coupled to an attachment Operation amp Maintenance Maintenance Procedures You will need to maintain your HDX coupler on a regular basis and as needed The maintenance procedures for this coupler include Front C Casting Buildup When play exists between the arm pin and the C casting disengage the attachment and place the template at the arm pin C casting as shown below Measure across the complete width of the arm pin location and mark the areas of the coupler that do not match the arm pin template Preheat the C casting area to 400 F 205 C Weld across the complete width of the arm pin location using the recommended welding procedures on page 13 Clean the access weld to match the profile of the arm pin template After all weld
6. This section provides diagrams for identification of the excavator the coupler and the Coupler Installation Kit These charts will also familiarize you with the terminology used in this manual Chart 1 Excavator Parts Excavator Bucket Control Cylinder Excavator Boom Excavator Arm Stick yer Ti FU Excavator Lin kage Macs fl JE VA Chart 2 Coupler Attachment Parts Excavator Idler Link i Excavator Arm Stick Excavator Linkage L Stick Side Original Machine Pin Link Side Original Machine Pin Stick Side Attachment Pin Link Side Attachment Pin 5 HOA Manufacturing HDX Cast Coupler Installation amp User Manual General Information Part Identification Charts Chart 3 HDX Coupler Parts with Yoke Cylinder Cylinder Pin an 6 Spri ngs an al feet Front Lever Stick Pin Spacing Boss Stick Pin Retaining Bolt Stick Pin Retaining Boss Jam Nuts Cylinder Stop Spring Pin Retaining Boss Jam Nuts Rear Lever Stop Spring Pin Chart 4 HDX Coupler Pin Diameters The HDX coupler is designed to pick up multiple pin diameters Refer to this chart for the appropriate pin diameter to match your HDX coupler S120 60 65 70 mm S200 70 80 mm S250 80 90 mm S350 90 100 mm S450 100 110 mm HOA Manufacturing HDX Cast Coupler Installation amp User Manual General Information Part Identification C
7. service manual for connection points The following diagram provides an example of one method of tying into the pilot pressure system Newer excavators may provide auxiliary ports for connections from aftermarket attachments Contact your excavator dealer s service department if you need additional guidance HOA Manufacturing HDX Cast Coupler Installation amp User Manual are ready to install the control valve onto the mounting sub plate You will use the four 1025 mounting screws to connect the valve and sub plate 26 Installation Instructions Control Valve Filter amp Switch Box 8 Install the wiring harness onto the control 10 27 valve The harness is marked for the lock side and the release side The lock side of the harness should be connected to the side of the control valve where the extend line comes into the sub plate The release side of the harness should be connected to the side of the control valve where the retract line comes into the sub plate The wiring harness has three color coded leads The black is the ground white is release and green is oon c amp 3 Inside the excavator cab mount the 3 light switch box in an easily accessible area that does not interfere with the operation of the excavator The switch box has two cables The first cable has three leads black white and green and is approximately 20 feet long Route this cable back to the engine compartment contain
8. steps are necessary to route the hydraulic hoses for your coupler installation The hoses must be routed from the engine compartment where they will tie into the pilot pressure system to the coupler l N CAUTION 1 T Route the hoses through the excavator s linkage as shown in the diagram below Make sure the hose has enough slack to move with the excavator linkage Allow for some flexibility Protect all moving hoses with the supplied hose guard sleeves The exact manner in which you need to route your hoses will vary depending on the specifics of your excavator Use the following steps as a guideline only Always route all hoses in the manner that will prevent interfering with other lines and equipment Be sure to secure all hoses to the excavator Note Step 4 offers a procedure for determining the proper length of hose 1 Before connecting any hoses be sure the hoses have been flushed completely with clean hydraulic fluid to prevent contamina tion Install the 90 degree 6 O ring x 6 JIC male fittings into the extend and retract ports on the cylinder 21 HOA Manufacturing HDX Cast Coupler Installation amp User Manual Installation Instructions Hydraulic Hose Routing 4 In order to determine the proper hose 5 After installing the lower hose from the cou length cut two pieces of hose allowing plenty of extra hose Install the hose fittings on one end only Connect the hoses to the coupler cylin
9. system Make sure you have plenty of slack where the line ends in the engine compartment You will tie these two hoses into the control valve See instruc tions on the next page HOA Manufacturing HDX Cast Coupler Installation amp User Manual Installation Instructions Control Valve Filter amp Switch Box The control valve and the filter assembly for the coupler are installed in the engine compartment of the excavator These components will tie into the excavator s low pressure pilot system Additionally mounting these components in the engine compartment offers protection from the elements The switch box is installed in the cab of the excavator and is used to operate the coupler Coupler Cylinder pejey Pilot Pressure Pump Release Lock This diagram shows the electrical and hydraulic schematic for the HDX coupler Remember the following steps are a general guideline since all excavators are different The objective for this section is to mount the control valve solenoid valve and the 3 light switch box The control valve ties into the pilot pressure system and hydraulic reservoir tank in order to provide hydraulic flow to operate the coupler The 3 light switch box is mounted in the cab of the excavator and is used by the operator to control the action of the coupler The 3 light switch box connects to the control valve using the wiring harness provided The switch box and wiring harness leads a
10. aged with the attach ment Engage attachments completely clear of all per sonnel Test connections away from all personnel Never swing coupled attachments over workers Switch to lock to engage heads link pin with lock lever DANGER The control switch should always remain in the lock position while operating the excavator with coupled attachments DANGER The rear lever is the locking device for the coupler The purpose of the front lever is to act as a back up in case failure to the rear lever You must ensure the rear lever along with the front lever is properly engaged before attempting to operate the excavator with a coupled attachment After the front lever engages allow time for the rear lever to engage Do not assume the rear lever is engaged just because the front lever is engaged You must allow the rear lever time to engage the attachments link pin HOA Manufacturing HDXT Cast Coupler Installation amp User 34 Operation amp Maintenance Engaging Attachment Connection tests must be performed each time you engage the attachment Connection Test One Connection Test Three Test the connection to the attachment by Test the coupler connection by trying to completely curling the coupler inward disengage the attachment from the coupler using the machine s weight Dig the attachment in the ground lower the attachment against the ground and try to force the attachment off by lifting the excavator s t
11. avator to attach the coupler to the excavator arm IV Route all hoses and wires in a neat and orderly manner Secure the hoses and wires to other machine components lv All hoses should have enough slack to move when powering the excavator arm or attachment WARNING Read understand and follow all safety precautions and procedures found in the machine s Operator Manual before attempting any operation inspection or maintenance of your machine its attachments and or systems HOA Manufacturing cannot anticipate every possible circumstance that might become a potential hazard The warnings in this document and on the product are therefore not all inclusive If a tool procedure work method or operating technique not specifically recommended by HOA Manufacturing is used you must make certain for yourself it is safe for you and others You should also ensure the product will not be damaged or made unsafe by the operation lubrication maintenance and or repair procedures you choose DANGER Failure to comply with information in this HOA Manufacturing HDX Cast Coupler User Manual may result in injury death damage to property and or damage to the coupler Ensure all personnel have read and understand the information in this manual before attempting to install maintain and or operate the HDX coupler HOA Manufacturing HDX Cast Coupler Installation amp User Manual 4 General Information Part Identification Charts
12. before oper ating the coupler Vl Ensure both springs and all spring pins are present prior to operating the coupler Vl Check for any obstruction inside the cou pler frame and remove before using the coupler vi Under normal conditions all machine hy draulic circuits are under extreme pressure Small pinhole leaks can be dangerous if hydraulic oil contacts skin or eyes As part of daily maintenance check for leaks vi Always wear protective equipment when performing inspection and maintenance procedures vi All coupler attachment combinations should be checked for possible interference before using Interference problems should be cor rected before using the coupler Ensure the coupler engages and disengages properly and easily Yl Perform all connection tests before attempt ing to operate the coupler Vl Make sure the attachment is resting on the ground and properly supported before per forming any work on the coupler vl All excavator operators should familiarize themselves with all coupler attachment combinations before attempting to operate the coupler This includes but is not limited to practicing engaging and disengaging each attachment Furthermore when new attachments are added to the machine s fleet the operators should proceed with the same familiarization process before being used on the jobsite Yl Only operate the coupler with the control box switch in the lock position The green ligh
13. cts manufactured by others are covered only by the warranties extended to HOA Manufacturing by its suppliers Warranty claims must be made to HOA Manufacturing in advance of any repairs by submitting a Warranty Claim Number and Warranty Claim Form which can be obtained by contacting HOA Manufacturing Warranty claims made without a Warranty Claim Number will be rejected Any product returned to HOA Manufacturing for inspection or repair must be returned with freight charges prepaid lf HOA Manufacturing authorizes repairs be made by an outside source HOA Manufacturing reserves the right to determine and approve the time and rate charged for repairs Repairs completed by an outside source will be subject to warranty one time only Subsequent failure of repairs by an outside source is non warrantable HOA Manufacturing shall not be liable for down time by the customer mileage costs damaged equipment or loss of productivity incurred by the dealer or customer All products are wearable and expendable and as such HOA Manufacturing assumes no responsibility for normal wear It is the responsibility of the customer to follow normal maintenance and operating procedures including but not limited to daily inspection for routine hairline cracks Any cracks should be repaired to HOA Manufacturing specification before further damage occurs HOA Manufacturing specifically disclaims any and all warranties expressed or implied including but not limit
14. d a method that will properly guide the hoses and prevent chaffing Install the bulkhead fittings into the upper bulkhead fittings bracket This bracket uses the 45 degree bulkhead fittings and the fittings are secured by the bulkhead nut Install the bulkhead fittings into the lower bulkhead fittings bracket This bracket uses the straight bulkhead fittings and the fittings are secured by the bulkhead nut 14 You have now mounted the necessary brackets and are ready to route the hydraulic hoses HOA Manufacturing HDX Cast Coupler Installation amp User Manual Installation Instructions Hydraulic Hose Assembly This section details the process of making the hydraulic hoses required for the coupler installation HOA Manufacturing makes every attempt to provide adequate hose length for your coupler installation However depending on your excavator you may find you need extra hose See the hose specifications listed on the Coupler Installation Kit component list on page 7 to determine if you will need extra hose A Place socket In a vise D Hold hose with the vise B Cut hose to length and dip into heavy oil C Screw hose counter clockwise into the F Using a wrench screw nipple assembly socket until it bottoms out then back hose completely into socket out 1 2 turn A HOA Manufacturing HDX Cast Coupler Installation amp User Manual 20 Installation Instructions Hydraulic Hose Routing The following
15. d system of all air by opening the Install yoke bleed screw on cylinder and extending and retracting the cylinder until a solid oil stream is obtained Make sure cylinder stroke extends 672 full retract to full extend Check for oversize pin spread dimension Check for interference while extending and beyond range of coupler retracting Watch levers pins and cylinder Repair or replace worn damaged parts Check for stop pin damage Replace with new stop pins as a set Stop pins get damaged Experience slow or unexpected movement Machine pressure too high if pressure is e Cold hydraulic oil Be certain to warm up above 1000 psi check circuitry and the hydraulic system before operating connection to pilot pressure circuit l l l Check installation of hydraulics and Operator is not fully seating the bucket pin electrical making sure it matches in C casting before curling onto bucket so diagrams in the nstallation Instructions rear lever is heavily contacted Replace section on pages 14 28 stop pins and train operator Incorrect stop pin install heavy duty pins from HOA Manufacturing Bucket pin loose in C casting Ear boss beginning to move or wear e Bucket pin is severely worn Replace pin e Preheat boss and surrounding cast materi and build up C casting with weld per al to 400 F Weld outside diameter of boss procedure outlined on page 38 to cast frame Weld 5 16 single pass using the recommend
16. der Route the hoses through the excavator linkage Slowly operate the excavator controls so the coupler is curled in completely Pull the hoses tight to the lower bulkhead fittings bracket Release tension on the hoses allowing a small amount of slack Mark the hoses cut and then assemble the hose fittings on the cou WARNING pler to the lower bulkhead fittings bracket begin routing the remaining hose sections Measure and install the hose between the lower bulkhead fittings bracket and the up per bulkhead fittings bracket Remember to route the hoses in a manner that will not interfere with other lines and equipment Be sure to eliminate any twisting of the hoses before tightening the connections Do not put hands into moving excavator linkage HOA Manufacturing HDX Cast Coupler Installation amp User Manual 22 Installation Instructions Hydraulic Hose Routing 6 23 Next you will need to route the hoses from the upper bulkhead fittings bracket back to the engine compartment Install a hose fit ting on one end then route the hose to the excavators bucket cylinder and down the boom Route the hoses in a manner that will prevent interference with other lines or equipment Secure the hoses to the ma chine using the plastic tie wraps supplied in the Coupler Installation Kit Repeat this procedure for both sides 7 Carry both of your hoses all the way into the engine compartment that houses the pilot pressure
17. e read and understand the information in this manual before attempting to install maintain and or operate the HDX coupler HOA Manufacturing HDX Cast Coupler Installation amp User Manual 14 Installation Instructions Installation Preparation Follow this reference list for necessary preparation steps before beginning the coupler installation 15 lV Place the excavator coupler and all tools and supplies needed in an open unencumbered work area Make sure the machine and coupler are on flat secure ground M Inspect the coupler and all Coupler Installation Kit components for signs of damage IV Ensure the Coupler Installation Kit is complete and none of the components are damaged If any components are damaged or missing notify your dealer IV Familiarize yourself with the components of the coupler see Chart 3 on page 6 and the Coupler Installation Kit see Chart 5 on pages 7 9 lv The coupler ships with a set of attachment pins Remove these attachment pins from the coupler They are not case hardened pins and are designed to be used in the ears of the bucket or attachment IV You are now ready to begin the coupler installation CAUTION Never allow a hydraulic line or component to become contaminated Contamination in the hydraulic system can cause severe system damage Contact your excavator dealer to obtain the proper caps and plugs used on your model excavator Do not connect the HDX coupler to
18. e replaced once a run without lubrication due to the hardness year or every 1000 machine hours whichever and self lubricating characteristics of the comes first Only use filters recommended by steel casting material HOA Manufacturing Specific information about your filter is listed on page 10 of this manual Springs Inspect daily to make sure the springs are installed properly and are not damaged or missing Replace any damaged or missing springs immediately Both springs need to be replaced as a set annually regardless of their condition Only use springs supplied by HOA Manufacturing and designed for your HDX coupler Installing any other springs void the warranty and may result in 1 cylinder injury death damage to property and or 1 rear lever damage to the HDX coupler 1 yoke 1 front lever 1 set of springs 1 set of spring pins Coupler Repair Parts Dealer Stock For every ten couplers sold to customers we recommend a dealer stock the following items These are easily installed in the field and will reduce downtime 39 HOA Manufacturing HDX Cast Coupler Installation amp User Manual Operation amp Maintenance Troubleshooting If you are experiencing difficulties with your coupler first refer to this section for help If problems persist contact your dealer for assistance Jerky action during extend and or retract Rear lever will not extend far enough to engage motions the bucket pin e Blee
19. ed to any implied warranties of merchantability and fitness for any particular purpose with respect to HOA Manufacturing products HOA Manufacturing HDX Cast Coupler Installation amp User Manual General Information Safety Messages amp Recommendations To guard against death or injury basic safety precautions should be observed before attempting to install operate or maintain your HDX coupler AN This is the safety alert symbol It is used to alert you of potential injury hazards Observe all safety messages that follow this symbol Safety messages in this manual are classified as follows DANGER serious injury WARNING serious injury CAUTION Indicates an imminently hazardous situation that may result in death or Indicates a potentially hazardous situation that may result in death or Indicates a potentially hazardous situation that may result in minor or moderate injury and or damage to the coupler or machine Recommendations Before You Begin VI Read this manual thoroughly before attempting to install operate or maintain your HDX coupler lv Before installing unpack the coupler and Coupler Installation Kit Inspect the shipper s bill of lading and the Coupler Installation Kit component list on pages 7 9 to ensure you received all items If items are missing contact your dealer lv Inspect all items for damage due to transit or handling lf any items are damaged contact your dealer l
20. ed welding procedures on Machine pressure is too low Check to page 13 Repeat steps on all bosses make sure machine pilot pressure is at least 450 psi If severely worn cut inside diameter of boss until loose in bore Remove boss Install replacement boss from HOA Manu facturing and weld as specified in the above bullet HOA Manufacturing HDX Cast Coupler Installation amp User Manual 40
21. et using the supplied sub plate mounting screws The mounting sub plate ports are marked as follows T Tank P Pilot Pump A Hose connect ports A amp B Run a hose from the mounting sub plate port P to the pilot pres sure pump Route a hose from the mount ing sub plate port T to the hydraulic reser voir tank B Hose 5 Mount the filter assembly in an area that provides easy access to the hydraulic res ervoir tank but does not interfere with other equipment in the engine compart ment The filter is mounted in line be tween the mounting sub plate and the tank 25 HOA Manufacturing HDX Cast Coupler Installation amp User Manual Installation Instructions Control Valve Filter amp Switch Box Important HOA Manufacturing makes every attempt to supply you with the appropriate fittings to install your coupler However due to the variety of excavators you will need to provide the specific fittings needed to tie into the pilot pressure system and the hydraulic reservoir tank of your excavator Contact your excavator dealer for the appropriate fittings In addition if your machine requires adaptation of the connectors contact your excavator dealer INLET HOSE During installation use care to keep the sealing surfaces of the filter sealing ring Route hose from the mounting sub plate 7 After properly connecting your hoses you port P to the pilot pressure system Refer to the excavators OEM
22. harts Chart 5 Coupler Installation Kit Component List Drawing Filter Components Part Number HON 3 6N 412 erre me vif 2 2 x2 x1 4 Angle Bracket Mr pp PG 174 x 20 x 3 4 Hex Head Bolts with Washers Drawing Switch Box Components Part Number H6N 3 6N 412 Bernd Buss 10 Amp Fuse FUSE10 oT a ae FU IF BON DI CCBX1020799 3 1 1 F 48 x 1 2 Mounting Screws 8 x 1 2MS Le a a a EN Tr Control Valve Components Part Number H6N 3 6N 412 Hydraulic Control Valve 24V Vickers Davas omuimseo 1 1 ow Mounting Sub Plate Lamas 1 ME ca 1 4 x 20 x 3 4 Sub Plate Mounting Bolts 1025 Mounting Screws e 4 4 oO ee Au Fittings amp Hoses Part Number 6N 3 6N 412 6 Reusable Female Hose Ends Swive BLOGG w s N o 60 Rng x46 JO Male 0 Dege eon s 5 o 8 O Ring 6 JCM erso 2 Pe 6 JIG Male x 6 JIC Male Straight Bulkhead Fiting 270006068 2 2 o 146 JIC Male x 6 JIC Male 45 Degree Bulkhead Fiting 27020606 2 2 rR Nuttor Bulkhead Fins esre aa s 460 ingxsvicmae eeo 1 4 fr Upper amp Lower Bulkhead tings Bracket Jam u 462500 psi Single Braid Hydraulic Hose HS s so v Protective osese fs oJ of w me a Ge Tubular Hose Retainer Braet fm a o v bi WN BR Po Po PD AININ lt x S lt C H4 0 IMPORTANT HOA Manufacturing makes every attempt to supply you with the approp
23. he appropriate Lock Out tag 5 Release the hydraulic tank pressure by op erating the release valve on the hydraulic tank HOA Manufacturing HDX Cast Coupler Installation amp User Manual 18 Installation Instructions Installing Hose Brackets 9 Attach the upper bulkhead fittings bracket to the excavator arm Remove the fittings from the bracket then weld the bracket to the excavator arm using the recommended welding procedures on page 13 The location of the upper bulkhead fittings bracket will vary depending on your specific excavator arm combination For a general guideline install the bracket approximately 20 to 24 from the center of the bucket cylinder connection pin Weld the bracket using the recommended welding procedures on page 13 11 To guide the hoses and help prevent chaffing mount the optional tubular hose retainer bracket This piece of tubing mounts to the inside of the bucket H link Position the tubing in the center of the link and weld using the recommended welding procedures on page 13 19 NA u 1 it a center of link Note The tubular hose retainer bracket may not work on all excavator H links The main objective for the bracket is to guide the hoses from the lower bulkhead fittings to the coupler cylinder and to prevent hose chaffing Some H links are made of materials not suitable for welding Other H links may allow the hoses to slip through them Fin
24. hydraulic pressures exceeding 1000 psi The HDX coupler is designed to operate off of the excavator s low pressure pilot system Only connect the coupler to the excavator s low pressure pilot system WARNING Avoid oil spills Use containers rags and or absorbent towels to contain any oil leakage Dispose of all waste oil fluids lubricants and other hazardous waste properly Always use the proper safety protection such as hard hats work gloves safety shoes and safety glasses when operating maintaining or installing this equipment HDX couplers are designed to be used only with a HOA Manufacturing Coupler Installation Kit Installing a coupler with anything other than components from a HOA Manufacturing Coupler Installation Kit results in an unauthorized modification to the coupler Any unauthorized modifications may impair function affect performance and affect the life of the coupler the excavator and or the attachment Unauthorized modifications may result in injury or death HOA Manufacturing disclaims any liability and responsibility resulting from unauthorized modification Unauthorized modification voids all warranties HOA Manufacturing HDX Cast Coupler Installation amp User Manual Installation Instructions Removing Attachment The following steps are necessary to remove an existing attachment from the excavator before beginning the coupler installation 1 Make sure the throttle control is in the low 4 Rem
25. in diameters and is FEA contoured for low stress 11 HOA Manufacturing HDX Cast Coupler Installation amp User Manual General Information HDX Coupler Familiarization The cylinder is designed for maximum extension giving more bucket compatibility Additionally it can be used with yoke to give ultra long stroke capabilities The double acting cylinder on the coupler is plumbed for an external check valve This feature locks the hydraulic pressure in the cylinder to prevent it from backing away from the pin engagement Hydraulic ports are positional for easy access Bleed Screw Hardened ball and socket spherical self aligns and requires no lubrication Oversize solid chrome rod Cylinder check valve is a cartridge type and separately serviceable Shafts are machined from a solid block of steel eliminating crack prone welds Cylinder Check Valve The hydraulic cylinder features an external check valve in the terminal block on top of the cylinder This provides easy access and servicing of this unit Should a hose break the check valve will maintain constant pressure on the attachment link pin Once the attachment is engaged the locking lever can only be retracted by applying positive pressure to the retract port This is done by placing the control box switch to the release position Bleed Screw The bleed screw is installed so you can bleed any air that may be in the cylinder This must be done after
26. ing plenty of soap and water Chemicals generate unhealthy gases when heated IV Preheat parts to be welded to a temperature of 300 F to 400 F 150 C to 200 C Run stringer passes minimize heat input and welding time by using short stringer beads to remove stress Cool slowly after welding If temperature is 50 F 10 C or below wrap with an insulation blanket A lo calized post weld heat treatment with a Rosebud torch should include at least two inches minimum of the adjacent base metal and the weld This heat treatment should raise the temperature of the heated area to 400 F to 500 F 200 C to 260 C Control of this step is critical to avoid embrittling the steel Have a fire extinguisher and first aid Make sure to disconnect the batter kit ready for emergencies Know ies Failure to do so could result in how to operate the fire extinguisher extensive machine damage to the and know where the first aid is lo electronic system cated in case of an emergency 13 HOA Manufacturing HDX Cast Coupler Installation amp User Manual Installation Instructions Installation Preparation This section will guide you through the necessary steps to install your HDX coupler Review the infor mation provided in the General Information section pages 3 13 before attempting to install your coupler Pay close attention to all safety message in this manual The couplers installation will require you to do the following basic steps
27. ing the control valve Connect the three leads of the switch box to the three leads on the control valve wiring harness Match the color coded wires and connect them in accordance with standard electrical practices Refer to SAE J2030 Heavy Duty Electrical Connector Performance Standard 11 12 13 AN The second cable has two leads black and white and is approximately six feet long Connect the white lead to the excavator s 24VDC system Link with the supplied buss 10 AMP fuse Fused circuits on the excavator should be used where applicable Connect the black lead to the system ground Make all wiring connections in accordance with standard electrical practices Refer to SAE J2030 Heavy Duty Electrical Connector Performance Standard After making all switchbox connections test the installation of the coupler With the machine power on and no attachment connected to the coupler place the switch to the lock position The green light on the switch box should illuminate and the coupler cylinder rod should extend If the cylinder rod retracts then your connections are installed in reverse To rectify reverse the wiring harness DIN connectors and retest the installation by repeating this step If the switch box and coupler cylinder do not operate correctly recheck the installation of all electrical and hydraulic components and ensure they are installed in accordance with the instructions in this manual If the problem per
28. ing is complete grind smooth the outer diameter of the hook plates Gaps between the template and coupler indicate worn areas Those worn areas should be built up and then ground to fit the template After buildup is complete grind both sides smooth When a template is not available proceed as follows to rebuild the C casting e Allow pin to rest at the bottom of the C casting e Wedge pin to the back of the C casting e Mark at the top of the pin approximately centerline of pin where the weld buildup should begin e Weld three beds side by side through the entire width of the C casting Grind the weld smooth and check the pin fit e Repeat welding process until the desired pin fit is achieved Weld using the recommended welding procedures on page 13 e lf the C casting is severely worn proceed as indicated above but also weld on bottom side of the C casting If pin bottoms out at the back of the C casting then the C casting needs to be built up El En s b m _ Large Pin lo 3 If gap is more than 1 32 then the C casting needs to be built up P F HOA Manufacturing HDX Cast Coupler Installation amp User Manual 38 Operation amp Maintenance Maintenance Procedures Coupler Lubrication Filter Replacement Lubrication of this coupler is not recom A hydraulic filter is provided for your HDX mended or required Levers are designed to coupler This filter should b
29. ithout bucket interference e A redundant locking spring that maintains positive pressure on the front lever The HDX coupler operates on the excavators low pressure pilot system rather than the main high pressure system Engaging an attachment is easier and safer using the low pressure pilot system The attachment can remain on the ground and does not have to be curled in to take the machine over relief The HDX coupler is designed to allow the operator to switch the attachments on a hydraulic excavator in a minimal amount of time The HDX couplers full potential will depend upon proper installation operation and maintenance of the coupler and its systems All users should read and understand this manual and any accompanying materials thoroughly prior to installing operating or maintaining your HDX coupler Pay particular attention to your personal safety and remember to follow all applicable standard safety precautions If you have any questions or concerns contact your authorized HOA Manufacturing dealer Thank you for purchasing our product We are confident you will be pleased with its performance Mailing Address Physical Address HOA Manufacturing Inc HOA Manufacturing Inc PO Box 5134 86360 Franklin Blvd C12 amp 13 Eugene OR 97405 Eugene OR 97405 Phone 503 348 5761 HOA Manufacturing HDX Cast Coupler Installation amp User Manual IMPORTANT NOTES HOA Manufacturing builds hydraulic couplers to OEM attachme
30. ner Bracket HOA Manufacturing HDX Cast Coupler Installation amp User Manual General Information Hydraulic amp Electrical Specifications This table provides the specifications for the hydraulic and electrical components of the Coupler Installation Kit Hydraulic Filter Unit ABF to 205 4310 10 107 Switch Box Assembly Voltage Rating 24 VDC Alarm Decibel Rating 72 dBA T4 2 SJTOW TPE 105 C FT2 water resistant Hydraulic Control Valve Hydraulic Hose 6 Single Braid Hose Eastman HFS06 2500 psi or equivalent 4 Single Braid Hose Eastman E7 04 2750 psi or equivalent CAUTION Only use parts recommended by HOA Manufacturing or parts meeting the specifications above Failure to use parts recommended by HOA Manufacturing may result in damage to the coupler and or machine HOA Manufacturing HDX Cast Coupler Installation amp User Manual 10 General Information HDX Coupler Familiarization Your HDX coupler is built with a low profile design It is constructed from high strength steel casting It is built to accept OEM attachments but is flexible enough to accept variances from these dimensions Review the following to familiarize yourself with the coupler components Frame is one piece cast steel with no structural welds for long life 1 5 times stronger than T1 O Lifting Eye yy Yoke Locking Rear Lever Multi Pin Diameter Lifting Eye The cast lifting eye on y
31. nt specifications Our coupler is designed to work only with attachments built to OEM attachment dimensions The critical dimensions are the pin center to pin center stick width and pin diameter dimensions One should properly ensure the attachments are built to these specifications before attempting to operate the coupler Additionally one may encounter some attachments that have structural interferences preventing the coupler from engaging the attachment Any interference issues should be resolved before operating the coupler HOA Manufacturing assumes no responsibility or liability for attachments not built to OEM specifications and or that have structural interference problems Any costs incurred to modify attachments that do not conform to OEM specifications and or have structural interferences are solely the responsibility of the end user HOA MANUFACTURING WARRANTY POLICY AND PROCEDURES FOR COUPLERS HOA Manufacturing warrants all couplers against defect in material and workmanship for a period of one year or 1000 hours from the date of install whichever comes first All warranty claims require submission of a PDI showing the original install date as well as machine hours at time of defect This warranty does not apply to any coupler that has been subjected to misapplication and or abuse or modified in any way without written authorization from HOA Manufacturing This warranty covers only new products manufactured by HOA Manufacturing Produ
32. o use on your machine Do not connect the HDX coupler to hydraulic pressures over 1000 psi The HDX coupler is designed to operate on the low pressure pilot system AN DANGER AN Improper operation and maintenance of this equipment may result in serious injury or death Read the HOA Manufacturing HDX Cast Coupler User Manual thoroughly before operating and or maintaining this equipment Unauthorized modification to the coupler and or any coupler components may impair function affect performance and affect the life of the coupler the excavator and or the attachment Unauthorized modification may impair the safety of personnel and may cause serious injury or death HOA Manufacturing assumes no responsibility for any unauthorized modification to the coupler and or coupler components Unauthorized modification voids all warranties Test connections away from all personnel Never swing coupled attachments over workers heads 29 HOA Manufacturing HDX Cast Coupler Installation amp User Manual Operation amp Maintenance Warnings amp Precautions Vl Review the information provided in the General Information section pages 3 13 before attempting to operate and maintain your coupler Yl Review the instructions and safety precau tions thoroughly before attempting to oper ate or maintain the coupler Vl Inspect the coupler and all coupler compo nents daily before beginning operation Perform any necessary repairs
33. ortion of the excavator arm underneath the excavator s bucket cylinder This bracket helps route the hoses up the arm of the excavator The tubular hose retainer bracket mounts on the inside of the excavator s bucket linkage The tubular hose retainer bracket helps guide the hoses from the lower bulkhead fittings bracket to the coupler s cylinder The following steps will guide you through the process of installing these brackets to the excavator 1 With the excavator sitting on firm level 6 Disconnect the negative cable from the ground rest the excavator arm in an battery terminal extended position 7 Attach the lower bulkhead fittings bracket to the excavator arm Remove the fittings from the bracket and weld the bracket to the excavator arm using the recommended welding procedures on page 13 The location of the lower bulkhead fittings Place the throttle control in the low idle bracket will vary depending on your position and turn the ignition key off specific excavator arm combination For a general guideline install the bracket 9 from the center of the excavator arm s idler pin The angle of the bracket should be approximately at the 9 point Weld the brackets using the recommended welding procedures on page 13 Place the safety lever in the locked position before leaving the cab 4 Secure a Lock Out tag on the operator s console to inform users the machine is in operable See your excavator dealer for t
34. our coupler is durable and designed to handle the machine s lifting capacity The excavator gains additional lifting capacity in both weight and height when the coupler is used to lift the load without the attachment The closed lifting eye should not be cut open or altered An approved lifting shackle is recommended for attaching cables or other safety hoisting products Locking Rear Lever The cast rear locking lever slides under the attachment link pin in the rear mounting area of the coupler The sliding mechanism is designed to minimize the chance of jamming When the pin is seated properly in the lever pressure from the hydraulic cylinder locks the attachment link pin between the coupler frame and the sliding lever Because the locking system pushes away from the front pin the coupler remains tight even as it begins to wear Cylinder see page 12 OEM Boss Design Springs gt Front Lever Multi Pin Diameter C Casting Front Lever The HDX coupler features a cast front lever The geometry of the front lever along with the configuration and alignment of the other coupler components hold the front lever in the closed po sition without the assistance of the hydraulic cyl inder Springs Constant pressure is maintained on the front lever by two tension springs These springs assist the hydraulic cylinder by keeping the front lever closed and secured C Casting The C casting fits two different p
35. ove the retaining bolts from the pins idle position Start the engine 5 Remove both the stick and link pin from the arm to bucket connection 3 Operate the attachment controls on the excavator to position the attachment securely on firm level ground 6 Operate the excavator controls to remove the excavator arm from between the ears of the attachment 7 Rest the excavator arm securely on firm level ground HOA Manufacturing HDX Cast Coupler Installation amp User Manual 16 Installation Instructions Connecting Coupler to Excavator Arm The following steps are necessary to connect your coupler unit to the excavator s arm 1 Ensure the coupler is resting securely on firm level ground and pins are not in the coupler X CAUTION Make sure you use the original machine pins from your excavator to connect the coupler to the arm of the excavator Do not use the attachment pins which were shipped with the coupler to connect the coupler to the arm of the excavator 2 If the attachment pins which were shipped with the coupler are still in the coupler remove the pins You cannot use these attachment pins to connect the coupler to the excavator arm You must use the pins that came with your excavator The attachment pins which were shipped with the coupler are only used in the ears of the bucket or attachment If your machine requires O rings roll the O 17 rings onto
36. pages 32 35 AN After completing the installation the bleed screws on the cylinder must be bled before the coupler can be tested CAUTION AN 28 Operation amp Maintenance Warnings amp Precautions This section provides warnings and precautions to take before operating and or maintaining your HDX coupler Failure to comply with information in this HOA Manufacturing HDX Cast Coupler User Manual may result in injury death damage to property and or damage to the coupler Ensure all personnel have read and understand the information in this manual before attempting to install maintain and or operate the HDX coupler CAUTION The excavator s effective reach as well as the attachment tip radius are increased with the HDX coupler installed Keep in mind the attachment can come in contact with the boom arm and or cab depending on the coupler attachment combination The excavators attachment range of motion changes with the HDX coupler installed specifically the bucket dump angle and the bucket curl angle The operator may experience slow or unexpected movement when operating with cold hydraulic oil Likewise damage to the hydraulic components can occur due to the cold oil Make sure to warm up the hydraulic system before operating Never allow a hydraulic line or component to become contaminated This could cause severe system damage Contact an authorized machine distributor to obtain proper caps and plugs t
37. racks off the ground 6 Connection Test Two 8 After performing all connection tests you Test the connection by fully cycling the are ready to operate your machine with the coupled attachment at least twice coupled attachment DANGER The switch must remain in the lock position when operating the excavator with coupled attachments Never swing coupled attachments over workers heads 35 HOA Manufacturing HDX Cast Coupler Installation amp User Manual Operation amp Maintenance Disengaging Attachment The following details the proper steps for disengaging from an attachment with the HDX coupler Place the attachment on secure flat ground Clear all personnel from the vicinity of the attachment Switch the control box to the release position The buzzer will sound and the red light will Place the bucket on the ground and switch to the release position DANGER Never use the release position when a coupled at tachment is off the ground Never swing coupled attachments over workers heads Unlatch the attachment link pin by curling the coupler out retract the machine s bucket cylinder and simultaneously lift the boom to completely disengage the coupler from the attachment Keep in release while unlatching bucket CAUTION When disengaging from an attachment turn the switch to the release position long enough to ensure the levers are completely open before curling the coupler out
38. re color coded for easier installation Switch Box Mounting Subplate Legend P Pilot Pump A Hose A T Tank B Hose B Wiring Legend B Black W White G Green Hydraulic Reservoir To Excavator 24 VDC System 10 Amp Fuse Linked B To System Ground CAUTION N Before connecting hoses flush completely with clean hydraulic fluid to prevent contamination HOA Manufacturing HDXT Cast Coupler Installation amp User Manual 24 Installation Instructions Control Valve Filter amp Switch Box 1 In the engine compartment which houses the low pressure pilot system of the exca vator mount the control valve mounting bracket You should weld the bracket in a place that does not interfere with other excavator components but allows easy access to the pilot pressure system When mounting the bracket follow the recom mended welding procedures on page 13 1 CAUTION AN Do not connect the HDX coupler to hydraulic pressures exceeding 1000 psi The HDX coupler is designed to operate off of the excavators low pressure system Only connect the coupler to the excavator s pilot system 3 Install three 90 degree 6 O ring x 6 JIC male fittings and one straight 6 O ring x 6 JIC male into the mounting sub plate 4 Connect the hoses to the mounting sub plate The two hoses that run from the cou pler cylinder into the mounting sub plate 2 Mount the mounting sub plate to the mounting brack
39. riate fittings to install your coupler However due to the variety of excavators you will need to provide the specific fittings needed to tie into the pilot pressure system and the hydraulic reservoir tank of your excavator Contact your excavator dealer for the appropriate fittings In addition if your machine requires adaptation of connectors contact your excavator dealer 7 HOA Manufacturing HDX Cast Coupler Installation amp User Manual General Information Part Identification Charts The Coupler Installation Kit component drawings are not to scale and are for representation purposes only Filter Head Filter Element 1 4 x 20 x 3 4 Hex Head Bolts w Washers Buss 10 Amp Fuse 3 Light Switch Box Assembly 1 4 x 20 x 3 4 Mounting Sub Plate Sub Plate Mounting Screws 1025 Mounting Screws Control Valve Wiring Harness Control Valve Mounting Bracket HOA Manufacturing HDX Cast Coupler Installation amp User Manual 8 General Information Part Identification Charts The Coupler Installation Kit component drawings are not to scale and are for representation purposes only 6 O Ring x 6 JIC Male 90 Degree 8 O Ring x 6 JIC Male 6 JIC Male x 6 JIC Male 6 JIC Male x 6 JIC Male Straight Bulkhead Fitting 45 Degree Bulkhead Fitting 6 O Ring x 6 JIC Male Upper amp Lower Bulkhead Fittings Brackets 6 2500 psi Single Braid Hydraulic Hose Protective Hose Sleeve Wire Ties Tubular Hose Retai
40. sists contact your dealer After completing the installation the bleed screws on the cylinder must be bled before the coupler can be tested AN DANGER Conduct tests away from all personnel Remove any attachments prior to testing the switch box installation HOA Manufacturing HDX Cast Coupler Installation amp User Manual Installation Instructions Control Valve Filter amp Switch Box Lock Green light illuminates No buzzer Cylinder rod on coupler extends Neutral Yellow light illuminates Buzzer sounds Hydraulic flow to the coupler is shut off Release Red light illuminates Buzzer sounds Cylinder rod on coupler retracts ALWAYS OPERATE COUPLER IN LOCK POSITION Once you verify the coupler switch box is oper ating properly you have completed the installation of your coupler Before attempting to operate or maintain the coupler thoroughly read and familiar ize yourself with the Operation amp Maintenance section on pages 29 40 HOA Manufacturing HDX Cast Coupler Installation amp User Manual Note The lights on the switch box indicate switch position only The lights do not indicate the position of the levers You must allow the levers time to extend and retract after placing the switch in the respective position Before operating the machine with coupled attachments always verify the levers are properly engaged by following the steps listed in the Engaging Attachment section on
41. t indicator will illuminate when the switch is placed in the lock position M The buzzer alarm indicates a potential un lock condition in the coupler Do not at tempt to operate the attachment if this con dition is present Always verify visually the attachment is properly locked Make sure the buzzer alarm functions properly at all times Yl Do not use the coupler as a prying tool or clamping device Yl Do not use the coupler without an attach ment except when used for lifting Vl Do not use the coupler if it is severely worn Make sure to repair before resuming opera tion WARNING Avoid oil spills Use containers absorbent towels and or rags to contain oil leakage Dispose of all waste oils fluids lubricants and other hazardous waste properly During inspection and maintenance of your coupler use safety protection such as hard hats face shields work gloves safety shoes work clothes and safety glasses Maintenance work should only be performed by experienced and qualified personnel HOA Manufacturing HDX Cast Coupler Installation amp User Manual 30 Operation amp Maintenance Switch Box Overview Lock Position The lock position will extend the coupler cylinder When the coupler cylinder extends the locking lever will move to and engage the attachment link pin The green light on the switch box will glow and the buzzer alarm will stop The switch must be placed and remain in the lock position
42. the coupler bosses You are now ready to connect the coupler to the excavator arm With the throttle control in the low idle position slowly operate the excavator controls to align the stick pin hole to the stick side of the coupler Insert the stick machine pin Use the original stick machine pin which came with the excavator to connect the coupler to the stick Use a rubber mallet to drive the pin into place Slowly operate the bucket cylinder on the excavator to align the excavator s pivot link hole with the link side of the coupler Insert the link machine pin Use the original link machine pin which came with the excavator to connect the coupler to the pivot link Use a rubber mallet to drive the pin into place A pry bar may be necessary to help adjust the pivot link in order to ease installation Secure the stick and link pins in place by installing their respective retaining bolts and nuts Your coupler is now connected to the exca vator arm HOA Manufacturing HDX Cast Coupler Installation amp User Manual Installation Instructions Installing Hose Brackets The Coupler Installation Kit includes several brackets to help you neatly route your hoses The lower bulkhead fittings bracket mounts on the excavator arm near the arm idler connection point This bracket helps route the hoses from the end of the excavator arm to the coupler cylinder The upper bulkhead fittings bracket mounts on the top p
43. the install any time a hose is removed as well as any time after the machine sits for any length of time HOA Manufacturing HDX Cast Coupler Installation amp User Manual 12 General Information Recommended Welding Procedures HOA Manufacturing high strength low alloy steels require greater than normal precautions when welding Follow this list of welding recommendations and procedures when installing and maintaining your coupler ly When welding always use proper welding protection and work in a well ventilated area lv Use an electrode or wire with a 70 000 Ib tensile strength or higher The cast frame can accommo date the use of 70 000 110 000 Ib tensile strength The higher the tensile strength the stronger the weld However the higher tensile strength is more difficult to weld Preference should be given to weld quality rather than tensile strength lv Place the welding ground cable within three feet one meter of the area to be welded lv Ensure all areas to be welded are clean free of moisture and properly aligned IV Remove paint from any surface to be heated or welded Painted surfaces give off unhealthy gases when heated Use a mask and proper skin protection when removing paint from any surface e If you remove the paint by sanding the objects take care not to breathe the generated dust Protect yourself by wearing a mask e f you remove the paint by using chemical compounds completely clean the surface us
44. the levers time to retract fully Release before engaging attachment Operate boom arm and bucket cylinders to position the coupler at approximately a 45 angle on the attachment s stick pin Fully seat the couplers C casting front jaw on the stick pin as shown below Keep in release position while engaging attachment A CAUTION The control box switch should still be in the release position while seating the coupler The coupler must be fully seated on the attachment s link pin for the locking lever to properly engage under and around the link pin Seat the coupler onto the attachment s link pin by curling the coupler in toward the machine extend the machine s bucket cylinder as shown below GER Keep in release while seating the coupler CAUTION AN All coupler attachment combinations should be checked for possible interference before operating the coupler Ensure the coupler engages and disen gages properly and easily with each attachment HOA Manufacturing HDX Cast Coupler Installation amp User Manual Operation amp Maintenance Engaging Attachment 4 After fully seating the coupler switch to DANGER the lock position to engage the link pin with the lock lever Connection tests must be performed every time you engage an attachment Failure to properly engage an attachment may result in serious injury or death The attachment may drop without warning if the coupler is not properly eng
45. v Verify the coupler machine number on the Serial Number ID Tag Fig 3 1 matches the machine you are attempting to install the coupler on lv Familiarize yourself with the coupler and Coupler Installation Kit components before installing operating or maintaining your HDX coupler see pages 5 12 IV Sort your Coupler Installation Kit and group components together by component type Be sure to group bolts with their respective washers Fig 3 1 Coupler Serial Number ID Tag 3 HOA Manufacturing HDX Cast Coupler Installation amp User Manual General Information Safety Messages amp Recommendations Other Recommendations lv Install a Safe Operation decal on cab inside right hand window near switch lV Always wear protective equipment during installation inspection and maintenance procedures V Avoid oil spills Ensure you have an ample supply of rags and absorbent towels on hand for cleaning purposes IV Dispose of all waste oils fluids lubricants and other hazardous waste properly lv Ensure all hoses lines and fittings are clean open and clear before connecting them to the system IV Do not force any parts during assembly If the parts are properly aligned the pins will go in easily and the fittings will screw into the valves without undue force lv Tighten all fittings securely and properly lv Lubricate all pins Always use the original machine pins which came with the exc
46. while operating the excavator with a coupled attach ment Neutral Position The neutral position is used only in the event of a hydraulic leak in the coupler system i e coupler hose breakage In this position the buzzer alarm will sound and the yellow light on the switch box will glow Under no circumstance should this posi tion be used while operating the coupler In the neutral position hydraulic flow to the coupler is shut off Release Position The release position will retract the coupler cylin der In this position the buzzer alarm will sound and the red light on the switch box will glow The release position should be used only when chang ing attachments If the coupler is disconnected from an attachment for any length of time the se lector switch may be returned to the lock position to silence the alarm Note The lights on the switch box indicate switch posi tion only The lights do not indicate the position of the levers You must allow the levers time to ex tend and retract after placing the switch in the re spective position Before operating the machine with coupled attachments always verify the levers are properly engaged by following the steps listed in the on pages 32 35 hh m Lock Neutral Release e Green light illuminates e Yellow light illuminates e Red light illuminates e No buzzer e Buzzer sounds e Buzzer sounds e Cylinder rod on coupler e Hydraulic flow to the e Cylinder rod on coupler
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