Graco 308618C User's Manual
Contents
1. 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Viscount I Hydraulic Motor Parts Model 238 356 Series C Part No 236 594 106 274 100 069 189 077 178 207 178 226 108 014 105 765 189 070 179 885 189 069 178 189 112 342 112 340 112 341 192 656 192 657 108 437 189 072 104 093 103 147 178 179 106 276 155 685 192 654 104 092 Description Qty VALVE spool O RING buna N BALL carbon steel YOKE valve BEARING piston bronze filledPTFE SEAL piston glass filled PTFE O RING buna N O RING buna N ROD displacement LABEL warning RETAINER spring SPRING compression BEARING rod bronze filled PTFE PACKING block nitrile rubber WIPER rod nitrile rubber PISTON ROD trip SPRING compression SLEEVE valve O RING buna N PLUG pipe WASHER sealing SCREW cap hex hd 3 8 24 unf 2a 0 625 16 mm long O RING buna N STOP valve SCREW cap socket hd 10 24 unrc 3a 0 625 16 mm long Ad dad dl dl dl a ya ld dl dl al Na Ref No 27 28 29 31 32 33 34 35 36 37 38 39 48 49 50 52 These parts are included in Repair Kit 236 698 which may be purchased separately Part No 106 292 100 133 178 181 106 470 236 419 178 229 107 197 189 073 189 074 189 075 110 792 236 420 114 231 112 561 113 585 191 216 Description NUT hex 3 8 24 unf 2b WASHER lock 3 8 in size PLATE cap ELBOW 90 3 4 16 un2. gloves clothing and respirator as recommended by the fluid and solvent manufacturer 4 308 618 Installation General Information NOTE Reference numbers and letters in parentheses in the text refer to the callouts in the figures and the parts drawing NOTE Always use Genuine Graco Parts and Accessories available from your Graco distributor Grounding A WARNING FIRE AND EXPLOSION HAZARD Before operating the pump ground the system as explained below Also read the section FIRE OR EXPLOSION HAZ ARD on page 4 e Pump Use a ground wire and clamp See separate system manual e Hydraulic and fluid hoses Use only electrically conductive hoses Hydraulic power supply Follow manufacturer s recommendations Spray gun Ground through connection to a properly grounded fluid hose and pump Fluid supply container Follow your local code Object being sprayed Follow your local code Solvent pails used when flushing Follow your local code Use only metal pails which are conductive placed on a grounded surface Do not place the pail on a nonconductive surface such as paper or cardboard which interrupts the grounding continuity To maintain grounding continuity when flushing or relieving pressure hold a metal part of the spray gun firmly to the side of a grounded metal pail then trigger the gun 308 618 5 Operation Startup Pressure Relief Procedure Before each use check the hydraulic fluid
3. level and add fluid as necessary to fill the lines A WARN ING INJECTION HAZARD A WARNING Wx The system pressure must be manually relieved to prevent the system from i FIRE HAZARD l starting or spraying accidentally Fluid If hydraulic oil becomes too hot it can under high pressure can be injected through the reach its flash point and cause a fire skin and cause serious injury To reduce the risk of Operating at too high an oil temperature can also cause faster motor seal wear and leak age The recommended hydraulic oil operating temperature is 80 to 115 F 27 to 45 C If the oil temperature approaches 130 F 54 C shut off the motor and check the hydraulic oil supply cooling system filters etc Clean or repair as needed an injury from injection splashing fluid or moving parts follow the Pressure Relief Procedure whenever you e are instructed to relieve the pressure e stop spraying e check or service any of the system equipment e or install or clean the spray tip Always use Graco approved Hydraulic Oil or equivalent see Accessories Do not substitute a 1 Engage the gun safety latch lower grade oil or one with a lower flash point 2 Shut off the hydraulic power supply The equivalent is a premium ISO grade 46 petroleum based hydraulic oil containing rust and 3 Close the supply line shutoff valve and then the oxidation inhibitors and anti wear agents Before return line shutoff valve usi
4. INSTRUCTIONS PARTS LIST 5 308 618 R T Rev C This manual contains important GRACO H warnings and information en Supersedes Rev B READ AND KEEP FOR REFERENCE quality counts INSTRUCTIONS Viscount I Hydraulic Motor 1500 psi 10 MPa 102 bar Maximum Hydraulic Input Pressure Model 238 356 Series C N SN 7 06168 GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1441 http www graco com OCOPYRIGHT 1996 GRACO INC Graco Inc is registered to I S EN ISO 9001 Table of Contents Warnings rs a bern 2 Installation s es 20 4 BA een tn 5 Operation orinal aaa 6 Troubleshooting arere oe ENE E 7 SEIVICE abia a ad Berker 7 Required Tools u e 7 Hydraulic Motor Disassembly 8 Hydraulic Motor Reassembly 10 Parts Drawing and Parts List 12 ACCESSOMES s desta mes eh od bie ed ped dis Da 14 Technical Data rsrsr 22 4 gerer y enunt ta a 14 Graco Standard Warranty 16 Graco Phone Number 4 16 Symbols Warning Symbol A WARNING This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions Caution Symbol 4 CAUTION This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions 44 WARNING EQUIPMENT MISUSE HAZARD Equipment misuse can cause the e
5. apscrew 23 To reassemble the valve sleeve 19 and valve stop 25 slide the sleeve 19 onto the valve spool S Either side of the sleeve can face up Apply primer to the threads of the screws 26 and let dry for 3 to 4 minutes Apply 1 or 2 drops of thread sealant to the female threads of the spool S Install the stop 25 and torque the screws 26 to 42 to 45 in Ib 4 7 to 5 1 N m To assemble the valve mechanism use Repair Tool 189 305 as follows 308 618 a Slide the yoke 4 into the repair tool as shown in the Detail in Fig 2 Align the upper detent holes H of the yoke with the center line of the tool b Insert the spring 18 and one ball 3 into the valve stop 25 Tilt the valve stop and start guiding it into the tool making sure the ball is sliding into the rounded slot in the tool c Place the second ball 3 at the other end of the spring 18 and push it in with your thumb while rotating the valve stop 25 until the spring is horizontal and the balls are in place Continue holding this assembly together d Align the curved ends of the yoke with the valve sleeve groove then press the assemblies firmly together Make sure the balls snap into the upper detent holes H of the yoke 4 and the curved ends of the yoke engage the valve sleeve 19 groove To remove the tool slide it over the trip rod 17 11 Place the bottom cylinder cap 35 in a vise Install the o ring 2 in the ca
6. bottle or Worn seals 2 15 14 and 49 in Replace seals See page 8 bottle needs frequent emptying bottom cylinder cap Required Tools Tighten or replace fittings See e Set of allen wrenches e Shallow metal or plastic pan approx 12 x 20 in e Set of socket or box wrenches e Repair Tool 189 305 see page 14 e Adjustable wrench e Thread lubricant e Torque wrench e Lithium base grease e Spanner wrench e Fresh Loctite 242 thread sealant and Loctite Primer T or Perma Loc 115 thread sealant and e O ring pick Perma Bond Surface Conditioner e 10 24 unc 2b tap e Chlorinated solvent e Vise 308 618 7 Service Hydraulic Motor Disassembly NOTE Repair Kit 236 698 is available For the best results use all the parts in the kit Kit parts are marked with an asterisk for example 2 NOTE When disassembling lay out all parts in sequence to make reassembly easier Clean and inspect all parts for wear or damage before reassembling Replace as necessary 1 Remove the hydraulic motor from the pump as explained in the separate system manual Lay it on its side in a pan 2 Unthread the tie rods 37 from the retainer 36 and the tie plate and pull them out through the top of the hydraulic motor It will be necessary to remove the lower four nuts 27 and lockwashers 28 3 Unscrew the four fluid tube nuts N and remove the tubes 32 39 See Fig 1 Allow excess oil to drain from the hydra
7. ement avec les procedures concern es Graco Phone Number TO PLACE AN ORDER contact your Graco distributor or call this number to identify the distributor closest to you 1 800 367 4023 Toll Free All written and visual data contained in this document reflects the latest product information available at the time of publication Graco reserves the right to make changes at any time without notice Sales Offices Minneapolis Detroit Los Angeles Foreign Offices Belgium Canada England Korea France Germany Hong Kong Japan GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1441 http www graco com PRINTED IN U S A 308 618 April 1996 Revised December 1997 16 308 618
8. event the equipment from starting unexpectedly 308 618 3 44 WARNING FIRE AND EXPLOSION HAZARD Improper grounding poor ventilation open flames or sparks can cause a hazardous condition and re sult in a fire or explosion and serious injury Ground the equipment and the object being sprayed Refer to Grounding on page 5 If there is any static sparking or you feel an electric shock while using this equipment stop spray ing immediately Do not use the equipment until you identify and correct the problem Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being sprayed Keep the spray area free of debris including solvent rags and gasoline Before operating this equipment electrically disconnect all equipment in the spray area Before operating this equipment extinguish all open flames or pilot lights in the spray area Do not smoke in the spray area Do not turn on or off any light switch in the spray area while spraying or while operating if fumes are present Do not operate a gasoline engine in the spray area TOXIC FLUID HAZARD Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin inhaled or swallowed Know the specific hazards of the fluid you are using Store hazardous fluid in an approved container Dispose of hazardous fluid according to all local state and national guidelines Always wear protective eyewear
9. f 2a fits 1 2 in 13 mm diameter tube TUBE inlet w 3 4 16 unf 2b fittings CYLINDER TEE 3 4 16 unf 2a CAP cylinder bottom RETAINER housing ROD tie ELBOW 90 7 16 20 unf 2a x 9 16 18 unf 2a fits 3 8 in 10 mm diameter tube TUBE drain w 9 16 18 unf 2b fittings NUT hex locking w nylon insert 10 32 unf 3b PACKING block urethane ELBOW 90 7 8 14 unf 2a x 3 4 16 unf 2a PLATE tie Qty hb dl A Replacement Danger and Warning labels tags and cards are available at no cost 308 618 13 Accessories Use Only Genuine Graco Parts and Accessories Graco Approved Hydraulic Fluid Assembly Tool 189 305 Premium ISO grade 46 petroleum based hydraulic oil Required for reassembling the motor containing rust and oxidation exhibitors and anti wear agents 210 F 99 C Flash Point 169 236 5 gallon 20 liter 207 428 1 gallon 3 8 liter Technical Data Maximum hydraulic fluid input pressure u e nennen en nenn 1500 psi 10 MPa 102 bar Maximum hydraulic fluid input volume u e ua La een een en 3 gpm 11 3 liter min Fluid consumption rate 2 00 00 cnt eee 6 5 ounces 0 195 liter per cycle or 1 gallon per 19 5 cycles Maximum water content of hydraulic fluid eee nett ene es 1 percent Maximum fluid temperature u e vu aun nnn nent een 130 F 54 C Effective piston area errre n nen ee
10. face up Install the o ring 2 on the top surface of the retainer See Fig 2 Install the bearing 13 and block packing 49 in the bottom cylinder cap 35 The lips of the block packing must face up Reassemble the housing retainer 36 and the bottom cylinder cap 35 To reassemble the yoke 4 and trip rod 17 clean the threads with primer or chlorinated solvent and let dry for 3 to 4 minutes Apply thread sealant to the female threads of the yoke Slide the yoke into Repair Tool 189 305 and place the tool in a vise Using a wrench on the flats of the trip rod screw the rod into the yoke Torque to 54 to 56 in Ib 6 1 to 6 3 N m Install the bearing 5 o ring 7 and seal 6 on the piston 16 Install the second o ring 8 on the underside of the piston Slide the piston onto the trip rod 17 so the wide end of the piston faces the yoke 4 Install the retainers 11 and spring 12 on the trip rod 17 Thread the nut 48 onto the rod until it runs out of thread so that it bottoms out on the shoulder of the rod See the Detail in Fig 2 Hold the flats of the displacement rod 9 in a vise Slide the trip rod 17 into the displacement rod Use a spanner wrench in the pin holes of the piston 16 to screw it into the displacement rod Torque to 30 to 40 ft lb 41 to 54 N m Install the o ring 20 in the top cylinder cap 1 then install the cap plate 29 o ring 24 sealing washer 22 and c
11. g the need for amputation Fluid splashed in the eyes or on the skin can also cause serious injury Fluid injected into the skin is a serious injury The injury may look like just a cut but it is a serious injury Get immediate medical attention Do not point the gun at anyone or at any part of the body Do not put your hand or fingers over the spray tip Do not stop or deflect leaks with your hand body glove or rag Do not blow back fluid this is not an air spray system Always have the tip guard and the trigger guard on the gun when spraying Check the gun diffuser operation weekly Refer to the gun manual Be sure the gun trigger safety operates before spraying Lock the gun trigger safety when you stop spraying Follow the Pressure Relief Procedure on page 6 if the spray tip clogs and before cleaning checking or servicing the equipment Tighten all fluid connections before operating the equipment Check the hoses tubes and couplings daily Replace worn or damaged parts immediately Do not repair high pressure couplings you must replace the entire hose Fluid hoses must have spring guards on both ends to help protect them from rupture caused by kinks or bends near the couplings MOVING PARTS HAZARD Moving parts can pinch or amputate your fingers e Keep clear of all moving parts when starting or operating the pump e Before checking or servicing the equipment follow the Pressure Relief Procedure on page 6 to pr
12. n 1 48 sq in 9 55 cm2 Piston TOA diameter cose jes eek kee ee eed wt eee nr ae a Br dee we 1 3 8 in 34 9 mm Stroke astra ren Denen erinnern 4 in 101 6 mm Thrust at 1500 psi 10 MPa 102 bar 0 teen eee nes 2220 Ib 9875 N Weight sagen Rn HE ha Ren alee re ead gia i ee ee ates 17 5 Ib 7 93 Kg Loctite is a registered trademark of Loctite Corporation Perma Loc and Perma Bond are registered trademarks of Perma Loc Company Manual Change Summary Assembly Part Ref Part No Name Changed Status No 238 356 to Old 11 192 655 Retainer Series C New 11 189 069 Retainer 14 308 618 Notes 308 618 15 Graco Standard Warranty Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use With the exception of any special extended or limited warranty published by Graco Graco will for a period of twelve months from the date of sale repair or replace any part of the equipment determined by Graco to be defective This warranty applies only when the equipment is installed operated and maintained in accordance with Graco s written recommendations This warranty does not cover and Graco shall not be liable for general wear and tear or any malfunction damage or wear caused by faulty installation misapplication abrasion corrosi
13. ng any other type of oil in this equipment call your Graco distributor Unauthorized use of 4 Disengage the gun safety latch lesser grade oil or substitutes will void the warranty 5 Hold a metal part of the gun firmly to the side of a grounded metal pail and trigger the gun to relieve pressure Shutdown and Care 6 Engage the gun safety latch Ru the Elies UES Helier eroced ire Warning 7 Open the drain valve required in your system and have a container ready to catch drainage 8 Leave the drain valve open until you are ready to spray again If you suspect that the spray gun or hose is completely clogged or that pressure has not been fully relieved after following the steps above very slowly loosen the hose end coupling and relieve pressure gradually then loosen completely then clear the valve or hose 6 308 618 Troubleshooting Problem Hydraulic Motor stops running Worn valve or valve balls 3 Repair valve See page 8 broken valve spring 18 Broken trip rod 17 spring 12 or Replace parts See page 8 retainers 11 Poor performance or reduced effi Worn piston seals 5 6 7 Replace seals See page 8 ciency Oil leaking around cylinder Worn cylinder o rings 2 Replace o rings See page 8 Loose tie rods 37 Tighten nuts 27 See page 10 Oil leaking around inlet or return Loose fittings or worn fitting tube fittings o rings 31 34 and 38 page 8 Excessive oil in drain
14. ny other incidental or consequential loss shall be available Any action for breach of warranty must be brought within two 2 years of the date of sale Graco makes no warranty and disclaims all implied warranties of merchantability and fitness for a particular purpose in connection with accessories equipment materials or components sold but not manufactured by Graco These items sold but not manufactured by Graco such as electric motors switches hose etc are subject to the warranty if any of their manufacturer Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties In no event will Graco be liable for indirect incidental special or consequential damages resulting from Graco supplying equipment hereunder or the furnishing performance or use of any products or other goods sold hereto whether due to a breach of contract breach of warranty the negligence of Graco or otherwise FOR GRACO CANADA CUSTOMERS The parties acknowledge that they have required that the present document as well as all documents notices and legal proceedings entered into given or instituted pursuant hereto or relating directly or indirectly hereto be drawn up in English Les parties reconnaissent avoir convenu que la r daction du pr sente document sera en Anglais ainsi que tous documents avis et proc dures judiciaires ex cut s donn s ou intent s a la suite de ou en rapport directement ou indirect
15. on inadequate or improper maintenance negligence accident tampering or substitution of non Graco component parts Nor shall Graco be liable for malfunction damage or wear caused by the incompatibility of Graco equipment with structures accessories equipment or materials not supplied by Graco or the improper design manufacture installation operation or maintenance of structures accessories equipment or materials not supplied by Graco This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of the claimed defect If the claimed defect is verified Graco will repair or replace free of charge any defective parts The equipment will be returned to the original purchaser transportation prepaid If inspection of the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE Graco s sole obligation and buyer s sole remedy for any breach of warranty shall be as set forth above The buyer agrees that no other remedy including but not limited to incidental or consequential damages for lost profits lost sales injury to person or property or a
16. p Set the cylinder 33 on the bottom cap 12 Install the o ring 2 in the top valve spool 1 Make sure the hydraulic fittings 31 34 and 38 are oriented as shown in Fig 1 then slide the displacement rod 9 and piston 16 into the cylinder 33 until it seats in the top cap When inserting the piston into the cylinder carefully guide the piston seal 6 and bearing 5 to prevent damage to these parts 13 Install the tie rods 37 If the nuts and washers were removed screw them onto the ends with short threads 14 Remove the plugs from the fluid fittings 31 34 and 38 Install the tubes 32 39 and tighten the four fluid tube nuts N 15 Install the hydraulic motor on the pump as explained in the separate system manual Service Apply primer to threads and let dry 3 to 4 minutes gt Spring faces up Lips face up A Apply 1 or 2 drops of thread sealant to female threads Apply thread sealant to female threads Torque to 42 to 45 in Ib 4 7 to 5 1 N m Torque to 54 to 56 in Ib 6 1 to 6 3 N m A Torque to 30 to 40 ft Ib 41 to 54 N m gt gt gt Wide end faces yoke 4 19 S IN 06171A Fig 2 308 618 11 Viscount I Hydraulic Motor Parts Model 238 356 Series C 06172A Fig 3 12 308 618 Ref No 4 Dr gE 4 5 6 7 8 9 104 11
17. quipment to rupture or malfunction and result in serious injury This equipment is for professional use only Read all instruction manuals tags and labels before operating the equipment Use the equipment only for its intended purpose If you are not sure call your Graco distributor Do not alter or modify this equipment Use only genuine Graco parts and accessories Check equipment daily Repair or replace worn or damaged parts immediately Do not exceed the maximum working pressure stated on the equipment or in the Technical Data for your equipment Do not exceed the maximum working pressure of the lowest rated component in your system Use fluids and solvents which are compatible with the equipment wetted parts Refer to the Tech nical Data section of all equipment manuals Read the fluid and solvent manufacturer s warnings Handle hoses carefully Do not pull on hoses to move equipment Route hoses away from traffic areas sharp edges moving parts and hot surfaces Do not expose Graco hoses to temperatures above 66 C 150 F or below 40 C 40 F Wear hearing protection when operating this equipment Do not move or lift pressurized equipment Comply with all applicable local state and national fire electrical and safety regulations 2 308 618 44 WARNING INJECTION HAZARD Spray from the gun leaks or ruptured components can inject fluid into your body and cause extremely serious injury includin
18. r If necessary use a 10 24 unc 2b tap to remove adhesive from the female threads 8 Remove the capscrew 23 sealing washer 22 and o ring 24 from the cap plate 29 Lift off the cap plate and remove the o ring 20 9 Hold the flats of the displacement rod 9 in a vise and use a spanner wrench in the pin holes of the piston 16 to screw it off the rod Remove the trip rod 17 from the displacement rod A CAUTION Be careful not to scratch the outside of the displace ment rod 10 Unscrew the nut 48 and remove the retainers 11 and spring 12 from the trip rod 17 11 Slide the piston 16 off the trip rod 17 Remove the bearing 5 seal 6 and o rings 7 and 8 from the piston 12 Inspect the yoke 4 and trip rod 17 for damage If either part requires replacement slide the yoke into Repair Tool 189 305 and set the tool in a vise See Fig 2 Use a wrench on the flats of the trip rod and unscrew the rod from the yoke 13 Pull the housing retainer 36 away from the bottom cylinder cap 35 14 Remove the block packings 14 and 49 wiper 15 bearing 13 and o ring 2 from the housing retainer and bottom cylinder cap Service 06172A Fig 1 308 618 9 Service Hydraulic Motor Reassembly 1 10 10 Install the block packing 14 and wiper 15 in the housing retainer 36 The spring of the block packing and the lips of the wiper must
19. ulic motor then plug the fluid fittings 4 CAUTION Keep the hydraulic system clean Always plug the hydraulic inlets outlets and lines when disconnecting them for any reason to avoid introducing dirt and other contaminants into the system 4 Pull the top valve spool 1 cylinder 33 and displacement rod 9 together off the bottom cylinder cap 35 Remove the o ring 2 from the bottom cap 5 Grasp the valve spool 1 and pull the cylinder 33 off Slide the cylinder off the displacement rod 9 Be careful not to damage the rod Remove the o ring 2 from the valve spool 6 Lay the valve spool 1 and displacement rod 9 on a table Place a clean rag around the yoke 4 to prevent the detent balls 3 from popping out Push the yoke 4 sideways off the valve sleeve 19 while holding the balls 3 and spring 18 with the rag then carefully remove the balls and spring 8 308 618 7 Inspect the valve sleeve 19 valve stop 25 and spool S for damage See Fig 2 If any of these parts requires replacement unscrew the two screws 26 holding the stop 25 to the spool S Remove the stop and slide the sleeve 19 off the spool If the spool is damaged replace the valve spool 1 NOTE If any of these parts are being reused thoroughly clean any adhesive residue from the screws and female threads of the spool Use a surface cleaner such as chlorinated solvent on the threads and blow dry with compressed ai
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