User Manual Contents
Contents
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8. OFF button to the OFF position to reset Then start the sequence again See fig 13 and fig 14 e Continue to crowd the Quick Coupler inwards until the AutoLock has fully opened El 4 Lower the attachment to the ground and release it from the Quick Coupler by crowding the Quick Coupler outwards away from attachment pins See fig 15 and fig 16 CROWD 5 You should now be free to raise Quick Coupler up and clear of attachment ready to pick up other attachment as necessary CONNECTING AN ATTACHMENT 1 When the Auto Lock is open crowd the Quick Coupler to the open digging position and lower the Quick Coupler hooks down onto the front pin Crowd the Quick Coupler around until the Quick Coupler contacts the bucket back pin and raise the bucket off the ground while continuing to crowd the Quick Coupler fully inwards to the closed position See fig 17 and fig 18 AUTOLOCK lt iQ ON Fig 17 Fig 18 Attach the drive bar supplied with the Manual Auto Lock Quick Coupler to the cylinder drive shaft at the back of the engaging plate and proceed to tighten At initial tightening the Auto Lock clasp will close over the front pin thus securing the attachment to the Quick Coupler Continuous tightening of the bar will engage the link pin engaging plate under the attachment link pin LOCK ENGAGED Fig 19 19 3 Continue to tighten the drive bar until furth
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11. 1 59 N Introduction In Cab Decals Application Recommendations safe Working Load safety Related Measures Operating Instructions a Hydraulic Coupler b Manual Coupler 6 Maintenance Guide 7 Parts List 8 9 Removing Parts from QC Model Troubleshooting Guide 10 Warranty Thank you for purchasing a Geith Quick Coupler By doing so you have chosen a tried and tested system which we trust will provide you with many years of trouble free performance In common with all Geith attachments it is manufactured to the highest quality and backed up by the Geith commitment to service that cannot be beaten Only proficiently trained and skilled personnel should install and operate the Quick Coupler To help ensure Safety For All Please ensure that you take the time to read this manual fully and carefully e tis vitally important to the correct operation and safe work practices that all users operators are familiar with and fully understand all aspects of the information contained in this publication All operators must be properly trained in the use of the specific model of quick hitch intending to be used 15 the responsibility of the machine owner to ensure only competent operators use the quick coupler Failure to operate equipment correctly can result in serious injury or death Safety Decal stickers are supplied with this Quick Coupler They must be fitted onto the inside o
12. fixed to the Quick Coupler body This is the limiting lift capacity when using a coupler for lifting erences Before carrying out a lift operation using the coupler integrated lift eye please remove any attachment that is connected to the Quick Coupler Fig 4 Using the suggested operating method as shown the lift eye should only be used for lifting if the excavator to which it is fitted 1s rated and equipped for lifting duties as required by lifting equipment regulations and has a current report of thorough examination Be aware of the maximum machine lift capacity for your machine configuration and for the lift cycle and envelope of movement you are about to undertake The rated lift capacity of the quick coupler may be less than the rated capacity of the excavator or vice versa It 1 important that the lower of the two values is used to determine the rated lift capacity of the combination a ee m mx If necessary make allowances for the weight of the Quick Coupler that is fitted to the excavator the weight of the Quick Coupler can be found on the Information Plate fixed to the Quick Coupler body and in this operator manual See Fig 4 Ensure all personnel and unnecessary equipment is moved clear of the operation site and cordon off the area to prevent encroachment during the lifting operation Use only the specified lift eye position for lifting slung loads Never use the attachment pin connection
13. Section 3 1 Hydraulics will not release attachment Is there hydraulic pressure going to the No Cylinder You will feel the pressure in the hoses Yes 1 Rest attachment on the ground and relieve all hydraulic pressure 2 Remove check valve Visually check if check valve is blocked Yes Replace with new check valve Does the cylinder No open Yes Go to Section 2 Control gt systerms in trouble shooting guide sus hed is Does the coupler No position in cylinder open 1 Turn off machine and release pressure 2 Remove hoses from coupler 3 Block off quick coupler hoses 4 Remove check valve Replace Cylinder See removing parts from QC model in user manual 5 Use machine to push the coupler open 6 Remove attachment Section 3 2 Hydraulics Quick Coupler is not holding the pins tight or releasing link pin after a period of time when machine is swicthed off Complete Maintenance Load test procedure located in weekly inspection maintenance guide section of the user manual Replace the seals in the cylinder Is the leakage coming from V1 or V2 Repeat the maintenance Load test No END Replace check valve Is the cylinder still leaking Yes Replace hydraulic Quick Coupler is closing in the middle of changing attachments Is the in line check valve in place No part 12 in installation Kit bill of m
14. hooks of the Quick Coupler for lifting slung loads Lifting with a quick coupler should always be carried out with the quick coupler vertical so that the load and lifting accessories can hang free without contacting the coupler body Failure to follow the suggested lifting procedure may result in equipment failure and the loss of the supported load The Geith Auto Lock range of Quick Hitches Couplers have been developed with safety of use as the number one priority Since our first Auto lock coupler launched in 2001 we have continually improved on the performance of the system making it one of the most reliable and respected products of its kind on the market today The following information provides Safety Notices and information relating to the Safe Installation and use of the Geith Auto Lock CLAW quick coupler It is not a conclusive document and recommendations contained within the document should be considered in conjunction with any additional safe working practices and inspection requirements that may apply either due to specific company requirements and regulations or on site best practice instructions Installation of the Geith Auto Lock coupler should be carried out by suitable trained and qualified personnel only Failure to comply with this requirement may result in risk to safety Only use the installation kit supplied with the Quick hitch to ensure that the quick hitch operates as intended and safe ma
15. machine swing radius 3 Obtain the drive bar supplied with manual autolock Quick Coupler and connect it to the cylinder drive shaft at back of engaging plate Turn the drive bar anti clockwise to release the attachment At initial loosening the back pin lock wedge will release the attachment back pin See fig 23 Continued loosening will open the auto lock from over the front pin Remove drive bar from the quick hitch The attachment can now be released from the Quick Hitch See fig 23 UNTIGHTEN DRIVE BAR re 3 N AUTO LOCK OPENS REAR PIN WEDGE RELEASES Tes 4 Lower the attachment to the ground and release it from the Quick Hitch by crowding the Quick Coupler outwards away from attachment pins See fig 25 Fig 24 Fig 25 5 You should now be free to raise Quick Coupler up and clear of attachment ready to pick up other attachment as necessary Please Note when changing a Hydraulic Coupler to a Manual Coupler please refer to section 7 of the user manual for instruction on changing out parts The effective maintenance of a Quick Coupler is critical in ensuring that the Quick Coupler is working in the correct manner and prevents degradation of the Quick Coupler under normal wear patterns Ensure any latent pressure the hydraulic system is released and machine 1 turned off before any work is carried out on the Quick Coupler 1 Routine In
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17. ERATED CHECK VALVE ex X PRESSURE v2 SWITCH 1 4 PORT SOLENOID OPERATED DIRECTIONAL g CONTROL VALVE T c 1 Con RELAY 4 ENCLOSURE 1 1 CL 1 mt EARTH ON SOLENOID 00 TO NOT USE TERMINAL MACHINE TT d Ei our Femma INTO BUCKET PUMP TWO TERMINALS ARE CYLINDER LINE AT USED ONLY BASE OF BOOM i ENSURE IT IS ON QO M 00053293A OUTSTROKE LINE be KEY HIGH PRESSURE HYDRAULIC LINE NOTE QUICK HITCH SUPPLY MUST BE TAKEN FROM PUMP BUCKET CIRCUIT FOR MAXIMUM HYDRAULIC LINE TO BUCKET CROWD CYLINDER PRESSURE DO NOT USE LOW PRESSURE PORT OR SERVO PRESSURE FOR THIS PURPOSE ELECTRICAL WIRING Exploded bom of hyd kit for prepiped machine COUPLER CIRCUIT DIAGRAM FOR INTEGRATION 1010000532 5 INTO VOLVO PRE PLUMBED MACHINE Pee een 2 12 24 SUPPLY VULVU PRE INSTALLED CONTROL VAL V 154 T a amp COUPLER HYGRAULIC CYLINDER min 31 IDC TUCTA Pv Far r TT UNPLUG DEUTSCH PLUG AND INSERT IM GEITH DEUTSCH SOCKET PRE INSTALLED QUICK HITCH CIRCUIT INSERT GEITH DEUTSCH PLUG IN CEM DEUTSCH SOCKET BET IH SUPPLIED QUICK Exploded BOM of hyd kit COUPLER WITH PRESS A
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19. adius of the machine while carrying out work practices e Never pass an attachment over the heads of persons When working with Hydraulic Oil every precaution should be taken to prevent oil spillage on the equipment or ground Oil can seep into drains and waterways through run off systems or through ground soakage causing danger to people and the environment Oil spillage on equipment or ground can cause risk of slippage which may lead to serious or fatal injury Use collection vessels to collect and retain any oil being released from the system Dispose of unwanted oil and oily rags materials safely as per Environmental regulations that apply The maintenance of quick couplers 1s critical to the ongoing safe operation of the equipment and should be carried out by competent persons only Inspections should be carried out on a scheduled basis to assist early identification of issues that may develop into more serious problems CONNECTING AN ATTACHMENT 1 On the Quick Coupler operation control panel press the system ON 0 denotes OFF and I denotes ON button and then press button A Note Button must be pressed within five seconds of pressing the ON button or the system will not operate If this occurs press the ON OFF button to the OFF position to reset then start the sequence again See fig 5 and fig 6 When button 1s pressed outstroke the bucket ram fully to crowd the quic
20. and hammer remove the safety clasp roll pin 4 Place the Coupler on the ground 5 Remove machine link pins from the Quick Coupler 6 Lift the machine linkage out of the way by retracting the machine bucket cylinder 7 Turn off the machine Remove the hoses from the cylinder 9 Tighten the spring retaining bolt until you are able to remove it Note make sure the flats of the spring retainers are in line with retaining brackets so that it will fit into place OO 10 Remove the Spring assembly 11 Remove the safety clasp main pivot pin 12 Remove the safety Clasp from the Quick Coupler 13 Using the punch tool and hammer to remove the stopper roll pins and engaging plate retaining roll pins 14 Using flat head screw driver remove the rubber bungs 15 Remove the cylinder by rotating it fully upright 1 before lifting out 2 16 To fit parts repeat steps in reverse These flow charts a representation of how the Geith system works and can be used to assist in the Trouble Shooting process Please contact your local Geith representative for assistance if problems persist Section 1 Electrical 5 there power going to the control Is electrical signal getting to the relay box No Yes eant shooting guide Section 2 control Yes system Check wires could be a grounding problem Are the wires ok Repair Replace Yes Wire
21. aterials in user manual Section 4 Mechanical Quick Coupler is not Opening Closing Drive bar 1 turning but nothing is happening CET a Replace the retaining retaining collar is in place Yes Remove retaining collar and drive bar from No Cylinder Replace the cylinder Is the drive bar hexagonal end worn Yes Replace drive bar Cylinder has seized Remove oil cap and internal ratchet and spring Has this freed up the cylinder Yes Remove drive bar and replace internal disc springs Has this freed up the Coupler Yes END The Company warrants the Equipment except for parts sold by it to the Purchaser to be e Free of defects in material and workmanship for a period of twelve 12 months maximum of 2000 hours of use from the date of shipment or 18 months from shipment to dealer e The applicable warranty time period for parts shall be six 6 months from the date of shipment and for reconditioned parts shall be three 3 months from the date of shipment e No warranty will be accepted for wear damage on products or components thereof The company will provide a new part or repaired part at its election in place of any part which is found upon its inspection to be defective in material or workmanship during the periods described above Such part will be repaired or replaced without charge to the purchaser during normal working hours at the pla
22. ce of business of a distributor of the company authorised to sell the type of equipment involved or other establishment authorized by the company Purchaser must present proof of purchase and purchase date at the time of making a claim under this warranty This warranty does not apply to failures occurring as a result of abuse misuse negligent repairs corrosion erosion normal wear and tear alterations or modifications made to the equipment without express written consent of the company or failure to follow the recommended operating practices or service and maintenance procedures as provided in the equipment s operating and maintenance publications The warranty provided herein does not apply to engines and motors which are manufactured by others as they are warranted by their respective manufacturers directly to the purchaser Geith recommend that you install the Geith Quick Coupler control system as supplied with every new Geith Quick Coupler The Geith Quick Coupler control system is a market leading tried and tested solution This system is designed to greatly simplify the installation process requiring no onboard computer configuration therefore minimum user training 1 required However if you choose to use alternative control system you must ensure that the control system complies with Health and Safety requirements and 1s compatible with your Geith Quick Coupler functionality Failure to do so may result in unintended ope
23. e coupler and may lead to premature failure Operations that are compatible with quick couplers are general excavating tasks such as digging handling using grabs grapples use suitable 2 pin adapter plates at all times and also crushing and breaking of rock debris When used in accordance with the manufacturers instructions the use of rock breakers 1s recommended for use with the Geith Quick Coupler On no account should the rock breaker be used as a leveraging tool see Fig 2 as this not only damages the rock breaker but will also lead to damage of the quick coupler In the event of sustained use of this type of equipment and where change of attachments 1 infrequent it may be more appropriate to temporarily remove the quick coupler from the excavator for the duration of the sustained task which in the longer term will reduce maintenance costs and 11 some instances also improve the performance and productivity of the attachment It should be appreciated that as with all equipment the more severe and arduous the application the greater the wear and tear that will be experienced by the quick coupler and hence the expected working life of the coupler will vary Used and maintained correctly and safely the Geith Auto Lock Coupler will give many years of unbeatable performance across a wide range of tasks and applications All attachments to be connected to the Quick Coupler MUST be connected using the two attachment pins see f
24. ect the structure to ensure it 1s free from defects and signs of excessive wear NTE Bu Visually check the hydraulic cylinder for leakages at pipes and rod seal Replace if necessary Internal piston seals can wear over time and are more difficult to check for performance degradation One method of checking these seals 15 as follows Cylinder Test Is carried out 1n a secure controlled area Connect an attachment to the coupler and open or curl the coupler back to load the hydraulic cylinder with the weight of the attachment Lower the attachment to within 300mm from ground level Switch off the machine and leave machine at rest for nominal period of 4410 minutes while observing any change to the position of the quick coupler engaging plate the position is seen to drift inwards hydraulic cylinder is in stroking then it is an indication of potential loss of oil over the internal piston seals 1n the cylinder or a potential problem with the cylinder check valve failing to sufficiently retain the oil in the cylinder o Should drifting occur Outstroke Quick Coupler cylinder to engage the attachment pins Lower attachment and coupler on to the ground and 2 Switch off machine Remove the hose from quick coupler cylinder port V and plug the removed hose to prevent loss of oil Clean away oil residue from cylinder port Start machine and repeat the above procedure Observe the cy
25. er tightening is possible See fig 19 Warning Do not extend drive bar by use of extension tube etc when tightening as over tightening may result in difficulty releasing the attachment or damage to the mechanism 4 Remove the drive bar and store excavator cab for reuse when next changing attachment At this point it is most important to crowd out the Quick Coupler and shake the attachment vigorously and or carry out a bump test to ensure the attachment is secured to the Quick Coupler See fig 21 or fig 22 If the Auto Lock fig 20 is not visibly in position in front of the attachment pin then the Quick Coupler must not be operated to carry out work The excavator should be switched off and the Quick Coupler should be examined for signs of damage Contact your supplier or Geith International immediately should you require assistance 1 v gt SHAKE ATTACHMENT VIOURUUSL If the Auto Lock is engaged and the attachment is secured safely to the Quick Coupler it 1s safe to operate the attachment to carry out the intended work RELEASING AN ATTACHMENT 1 With Quick Coupler and attachment at ground level position attachment in a slightly curled position with hooks pointing upwards as per see fig 23 so as to prevent attachment from sliding out of Quick Coupler when released 2 Ensure that all personnel are standing clear of Quick Coupler and
26. f the cab window where they can easily be seen WEEKLY QUICK HITCH HYDRAULIC CYLINDER 1 Attach product to the Quick Hitch 2 Open or cut the quick hitch and attachment to approx 300mm 12 the ground level Fig 1 7 PS Y 9 gt rr d Please refer to maintenance guide for further recom cks a tthe Quick We pan hen alterni gt Sen E Tore Wa ed Fg Y The Geith range of Hydraulic Excavator Quick Couplers 15 designed for use with all makes of Excavators combined with a wide range of attachments to suit a wide range of work applications Owners and operators please take note however that all possible applications operations and uses for the quick coupler cannot be predicted or anticipated It is therefore the responsibility of the owner and operators of the quick coupler to ensure that the quick coupler is used and maintained a safe and appropriate manner that will not cause damage to or make unsafe in any way the operation of the quick coupler or equipment being used Safe Use Pin grabber type couplers are primarily designed to withstand loading situations that direct and transmit the working forces of the excavator and attachment through key load points on the quick coupler see Fig 1 Failure by the owner or operator to use the coupler appropriately may result in premature wear and tear of th
27. ig 3 On no account must any attachment be connected using only one of the attachment pins Typical examples where this might occur are with some types of material handling grab and piling hammers In these cases a two pin adapter bracket designed for the purpose must be used See Fig 3 for example To increase the life span of the quick hitch callipers should be fitted to pick up the desired dipper width of the attachments where possible This will prevent any sideways movement and subsequent wear issues with the hitch or its internal parts Other operations that may have a negative affect on the coupler are e Extensive face shovelling applications e Post driving It is the responsibility of the owner and or the operator to assess each task and determine the safest procedure to be followed taking account of the personnel and the equipment being used Examples of equipment that can be used with Geith Quick Hitches Angle tilt Digging buckets Grading Buckets High Capacity bucket Pallet Forks Jaw Bucket G Profile Trapezoidal Bucket Examples of equipment that can be used with Geith Quick Hitches Demolition and Quarry work Grapple Shears Examples of equipment that can be used with Geith Quick Hitches Rock Wheel Sleeper Grab Vibratory hammer Please take note of and be aware of the Safe Working Load for the Coupler integrated lift eye that is marked on the Information plate
28. k Coupler This will enable the auto lock to open fully 2 When Auto Lock is open crowd the Quick Coupler to the open digging position and lower the Quick Coupler hooks down onto the front pin Crowd the Quick Coupler around until the Quick Coupler contacts the bucket back pin and raise the bucket off the ground while continuing to crowd the Quick Coupler fully inwards to the closed position See fig 7 and fig 8 22 Pd Ov AUTOLOCK JS ON 1 West wd VY JN y Fig 7 Fig 8 3 With the Quick Coupler crowded fully inwards press the ON OFF button on the control panel to the OFF position while continuing to crowd the Quick Coupler inwards The Auto Lock will close around the attachment pin this will be visible from the operator position in the cab While the rear pin engaging wedge will lock the back pin into position See fig 9 At this point it is most Important to crowd out the Quick Hitch and shake vigorously and or bump the attachment off the ground to ensure the attachment 15 secured to the Quick Coupler See fig 10 or fig 11 If the Auto Lock is not visibly in position in front of the attachment pin then the Quick Coupler must not be operated to carry out work The excavator should be switched off and the Quick Coupler should be examined for signs of damage Contact your supplier or Geith International immediately should you
29. linder port for further or continued oil flow seep foil flow is evident then there is an indication that the piston seals need replacement Replace the piston seals and repeat the test procedure once more If there is continued drift then the cylinder check valve should be replaced and again a re test should be carried out to confirm resolution of the problem and the cylinder functions correctly Review any previous maintenance history on the product Look for evidence of previous repair or re WOrk Saat NN CO L oc oc ALO VL6cCct S0000 C8 191935 2 310n0 3sv3ld 519 4 IN3INOV Id38 SNIdH3CIHO NAHM H83Q0NITAD 5 910 Nid 11145 Nid 1103 Nid 1104 A18IN3SSV 3903M 1 4 5 1108 4 DNIHdS A18IN3SSV 83 5 5 310 ON ANI Nid INIT AIO Nid 7201 9135 34 Before you start you will need the follow tools to complete the procedure Flat head Screw driver Large bolt punch 20mm or 10mm Hammer Punch tool check Quick Coupler for correct size 2 X Wrenches check Quick Coupler for correct size WN Partially curl in the Quick Coupler link lower than dipper pin This is for ease of removing the small roll pin 2 Instroke the coupler cylinder 3 Using the punch tool
30. nner Should the Quick Coupler be installed with a non Geith control system you must ensure that the Quick Coupler operates as per Geith recommended instructions Always wear appropriate PPE clothing and equipment for working with hydraulic equipment When installing the quick coupler you must use only suitable approved certified lifting equipment Please refer to Quick Coupler CE badge for guidance weights on each model Exercise extreme caution when carrying out maintenance procedures on the Quick Coupler particularly when working with pressurized fluids such as hydraulic oil Before commencing any examination or maintenance work e Always ensure the coupler and attachment is supported in a stable position e All power to the coupler and machine 1 cut in order to prevent any unintentional or unexpected movement of coupler or attachment e Be aware of residual oil pressure in the hydraulic system when loosening or removing any hose or pipe connections e Always depressurize the system before starting maintenance work on the quick coupler e Never search for oil leaks with bare hands as pressurized oil can penetrate the skin and cause serious health risk There is the potential for great risk to safety while operating machinery and equipment Extreme care must be taken when operating the Auto Lock Coupler and attachments in proximity to eround workers Ensure that there are no personnel within the operating r
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34. ration of the coupler and will invalidate both your watranty and any liability by Geith or any of its associated companies A detailed description of terms and conditions of sale can be found on QR39 Geith terms and conditions of sale which was attached to your order acknowledgement If you do not have a copy you can contact your nearest Geith Distributor 5 JY WOJ 5 s nss e puey pue 2 40 9 JO SNOIADIC 10 100 jonpoud uo 1015 44 ue A 1284402 JapuljAd ay pue 3 0 94 JNO pere aq pjnous 1591 9 e pue peoe daJ aq pynoyus 29942 ueu1 Hlp s JI a 159 9941 1eedaJ pue sje s uojsid y o2e doy sje s 1518 JY 1291 uau1 SI 10 4 jo penuiuoo 10 3404 JapuljAd 993 9540 9 y jeedaJ pue els a yod JapuljAd enpisaJ Aeme JO 550 1 0 pue 1104 JapuljAd yoInb au 9
35. require assistance If the Auto Lock is engaged and the attachment is secured safely to the Quick Coupler it 1s safe to operate the attachment to carry out the intended work RELEASING AN ATTACHMENT 1 With Quick Coupler and attachment at ground level position attachment in a curled position with hooks pointing upwards as per fig 12 with the pressure built up in the machine bucket digging crowd cylinder 2 Ensure that all personnel are standing clear of quick hitch and machine swing radius X Safety Lock 9 Qv in position men gt 2 lo RE ___ 74 fe lt gt j B gt WS AN 3 To enable the Quick Coupler Control system to operate Crowd the Quick Coupler fully inwards so that a pressure 1s built up in the Quick Coupler Hydraulic control system from the outstroke of the machine bucket digging crowd cylinder When the Quick Coupler is fully crowded inwards press the control panel ON OFF switch to the position See fig 13 Then press the button on the control panel marked See fig 14 while continuing to operate the crowd lever to maintain the Quick Coupler the crowded in position Note Button must be pressed within five seconds of pressing the button or the system will not operate If this occurs press ON
36. s Box Is Faulty replace control Check fuse in Control No to 2 eplace Box is am Yes Is the wire part 13 in exploded gt BOM in installation Check fuse where manual broken power is taken from No the machine is OK Replace Yes i e if its hooked into fuse cigerette lighter check Repair cigarette lighter fuse Wires No Yes Box is Faulty Replace control box Replace Control box as NO output signal coming from control box Section 2 Control system Check is the LED light on the solenoid valve is No working Yes 5 the coil moving when it is No acitvated LED turns on you will be able to feel or hear it move Yes 5 their pressure the Quick Coupler hose line You will feel the pressure in the line Yes Go to trouble shooting page on Coupler Cylinder not working Check the relay wires are in place and not loose Refit wires Retest and check if LED on solenoid valve is working 1 Remove the wax from the top of the pressure setting screw on top of the pressure switch 2 Turn the screw counter clockwise until a signal is received make sure pressure on digging bucket line is high 3 Use lock thread to lock the pressure setting screw in place once signal is recieved Is pressure switch sending a signal Yesc END No END Replace Relay box and Pressure switch assembly
37. spection Maintenance Checks Construction attachments operate in difficult and severe environment where there can be unpredictable loading situations applied to the equipment many times during the day On rare occasions Over time ongoing exposure to such a work cycle may lead to changes in the equipment structure and performance The equipment will be subjected to high stress and fatigue loading situations which may initiate and develop potential fault situations such as cracking bending and deterioration of components These faults if undetected may eventually lead to sudden and possibly dangerous failures e Maintenance work must be carried out by competent personnel in accordance to manufacturer s guidelines e Never use bare hands to look for hydraulic fluid leaks e Ensure that maintenance checks are being carried out to the correct procedures and are followed so that there is no risk to anyone completing the maintenance checks or the immediate area 3 General Inspection and Maintenance Equipment required Measuring equipment measuring tape vernier callipers Cleaning equipment Brush cloths de greaser straight edge Hose Swaging equipment selection of hand tools spanners vice grips screw driver set hammers etc Scheduled Inspections When and what to check Recommended minimum maintenance checks After installation inspect hose connections after 15 minutes of work as they could loosen af
38. ter machine has heated up structure inspect for weld cracking damage excess wear to structure and parts Moving components fit up looseness linkages clearances sticking jamming Hydraulics hose wear leaks joints damage leaks solenoid valve control for leaks of cable damage cylinder signs of wear on housing leaks Electrical control box function and general condition Springs condition presence Fit up of coupler to machine wear in bushings Fit up of coupler to attachments correct attachment Lift eye wear or damage Check for cylinder condition cylinder leakage rod damage holding capacity pressure loss etc 4 Daily checks Before starting work with the excavator the operator should carry out a thorough visual inspection of the quick coupler Remove any dirt and debris from the coupler especially around the internal mechanisms hydraulic cylinder linkage spring mechanism e Check coupler pin pick up hooks to ensure there is no build up of dirt Check coupler structure for signs of damage especially the load bearing hooks and hydraulic cylinder Check all fixing points bolts nuts clips pins etc for signs of wear or damage Check all hydraulic hoses and connections for evidence of oil leakage The quick coupler should not be operated until all issues are repaired or replaced as necessary Weekly Inspection Clean coupler and visually insp
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