Repair
-For portable spray application of architectural paints and coatings or replacement pump for Graco GMaxt II sprayers -
3300 psi (228 bar, 22.8 MPa) Maximum Working Pressure
Model 287512, Series A
GMax II 3900 Sprayer,
Rental Pro 360G
Model 287513, Series A
GMax II 5900 Sprayer,
UltraMax II 1095/1595 with ProConnect
Model 287579, Series A
GMax II 5900HD Sprayer
Model 249122, Series A
GMax II 7900 Sprayer,
Ultra Max II 1895
Model 287928, Series A
Mark Vt International
Model 287929, Series A
Mark V North America
Model 289590, Series A
TexSpray 7900HD,
Mark X, 230V, Domestic
ti6177a
Important Safety Instructions
Read all warnings and instructions in this manual and in your sprayer manual. Save these instructions.
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN
Copyright 2005, Graco Inc. is registered to I.S. EN ISO 9001
Table of Contents
Warnings
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions.
WARNING
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
INSTRUCTIONS D Do not exceed the maximum working pressure temperature rating of the lowest rated system component. See Technical Data in all equipment manuals.
DUse fluids and solvents compatible with equipment wetted parts. See Technical Data in all equip- ment manuals. Read manufacturer fluid and solvent warnings.
D Check equipment daily. Repair or replace worn or damaged parts immediately. D Do not alter or modify equipment.
D Read all instruction manuals, tags, and labels before operating the equipment.
D Use equipment only for its intended purpose. Call your Graco distributor for information.
DDo not use
D Comply with all applicable safety regulations.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
D Keep clear of moving parts.
D Do not operate equipment with protective guards or covers removed.
DPressurized equipment can start without warning. Before checking, moving or servicing equipment, follow the Pressure Relief Procedure on page 3. Disconnect power cord.
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Service
Pressure Relief Procedure
WARNING
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. To
reduce the risk of an injury from accidental spray from the gun, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you:
D are instructed to relieve the pressure, D stop spraying,
D check or service any of the system equipment,
D or install or clean the spray nozzle.
1.Lock gun trigger safety.
2.Turn engine ON/OFF switch to OFF.
3.Move pump switch to OFF and turn pressure control knob fully counterclockwise.
4.Unlock trigger safety. Hold metal part of gun firmly to side of grounded metal pail, and trigger gun to relieve pressure.
5.Lock gun trigger safety.
6.Open pressure drain valve. Leave open until ready to spray again.
If you suspect that the spray tip or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, VERY SLOWLY loos- en tip guard retaining nut or hose end coupling to re- lieve pressure gradually, then loosen completely. Now clear tip or hose.
Pump Repair Kits
Tools Needed
Vise
12 in. adjustable, open end wrench (2) Hammer, 20 oz maximum
Small screwdriver Throat Seal Liquid
Pick or long small screwdriver
Cleaning and Inspecting Parts
1.Clean and inspect parts. Pay particular attention to the ball seats in the intake valve and piston, which must have no nicks or wear, and to the inside of the sleeve and the outside of the piston rod, which must not be worn or scratched. Replace worn or damaged parts.
WARNING
COMPONENT RUPTURE HAZARD
Never use sharp or pointed tools to remove sleeve or other components
which could result in pump rupture and cause serious bodily injury. If the sleeve cannot be removed easily, return the sleeve and cylinder to your Graco distributor for removal.
2.Remove and clean the sleeve when you are repacking the pump.
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Disassembling the pump
Fig. 1. Remove packing nut (202) and throat adjust- ment spacer (228).
202
228
Fig. 3. Disassemble intake valve. Clean and inspect.
211 used on 249122, 289590
227
ti6178b
Fig. 3
7570e
Fig. 1
Fig. 2. Unscrew intake valve from cylinder.
Fig. 4. Tap piston rod out of cylinder with a hammer or flip over and tap piston rod out against a bench.
Note: Sleeve may come out of cylinder with piston rod.
Fig. 4
ti6180a
Fig. 5. Remove piston rod from sleeve, or remove sleeve from cylinder.
ti6179a
Fig. 2
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Service
WARNING
COMPONENT RUPTURE HAZARD
Do not clean or wipe the piston valve threads. Cleaning the piston valve
threads could destroy the special sealing patch and cause the piston valve to come loose during operation, causing pump bursting and possible serious bodily injury.
Not used on 287512
Fig. 6. Unscrew piston valve from piston rod. Clean and inspect parts. The piston has a special thread locking/sealing patch. Do not remove the patch. The patch allows four disassembly/assembly procedures before it is necessary to apply Loctiter to the threads.
Fig. 8
ti6182a
ti6183a
Fig. 6
Fig. 7. Remove packings and glands from piston rod.
Not used on 287512
Assembling the pump
Fig. 9. Soak all leather packings in SAE 30W oil for 1 hour minimum prior to assembly. Stack male gland (204) on piston rod. Alternately stack UHMWPE (208) and leather (218) packings (note orientation) on piston rod. Install female gland (217). Install piston wiper (216) (note orientation) and backup washer (229) on piston valve (210). The special sealing patch on piston valve threads is good for four repackings. Use Loctiter on piston valve threads after four repackings.
Not used on
287512
210
229
216
Fig. 7
ti6184a
Note: pump 249122 and 289590 do not use leather packings in piston stack. Alternately stack blue (208) and brown (218) packings on this pump.
Fig. 8. Remove throat packings and glands from cylin- der. Discard throat packings and glands.
Fig. 9
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Service
Fig. 10. Install ball (206) in piston rod. If Loctiter is ap- plied to piston valve threads, ensure that none gets on ball.
Fig. 12. Soak all leather packings in SAE 30W oil for 1 hour minimum prior to assembly. Place male gland (204) in cylinder. Alternately stack UHMWPE (203) and leather packings (223) (note orientation). Place female gland (224) in top of cylinder. Seat packings.
206
ti6186a
Fig. 10
Fig. 11. Tighten piston valve to piston rod as specified:
Torque to 27
(287512)
Torque to 55
(249122, 287513, 289590)
ti6187a
ti6188a
Fig. 12
Fig. 13. Install seal (201) into packing nut (202). Install throat adjustment spacer (228) onto packing nut. Loosely install packing nut into cylinder.
201
202
(228
on 249122, 228 289590 )
Fig. 11
Fig. 13
ti6189a
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Service
CAUTION
Never slide piston assembly (222) into top of sleeve (220) as this may damage piston packings.
Fig. 14. Grease
Note:
Fig. 15. Grease top inch or two of piston rod (222) that goes through the sleeve/cylinder assembly throat packings (205). Grease piston packings at bottom of piston rod.
Carefully slide piston assembly (222) into bottom of sleeve/cylinder assembly (205) until pump rod pro- trudes at the top and piston packings are totally inside the sleeve (220).
220
221
207
Fig. 15
205
207
222
ti6273a
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Service
Fig. 16. Reassemble intake valve with new
ti6197a
Fig. 16
Fig. 17. Install intake valve on cylinder. If a wrench is used torque as follows:
70
(Model 287513, 287579 )
200
If a wrench is not used, be sure intake valve is bot- tomed out against cylinder.
Fig. 18. Torque packing nut (202) down onto adjust- ment spacer (228) 140
Remove throat adjustment spacer (228) when pump packings begin to leak after much use. Then tighten packing nut down until leakage stops or lessens. This allows approximately 100 gallons of additional opera- tion before a repacking is required.
ti6195a
Fig. 18
ti6194a
Fig. 17
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Service
Cross Sectional Reference
215
212
227
Fig 19
222
201
Pump 287512
202
228
203
204
Pump 287512
206
208 2 217
216
229
214
213
ti6196a
Technical Data
acetal, polyethylene
NOTE: LoctiteR is a Loctite Company registered trademark.
310894 9
Parts
Model 287512, Series A
?????? These parts are included with pump 287512.
220 213
ti5491a
221*
222
219*
218*
217*
216*
229
206*
210
215
212???
231
10 310894
Parts
Model 287513, Series A
201
202
228
224*
*203
223*
204*
221*
222
219*
*218 208*
*These parts are also included in Repair Kit 248213, which may be purchased separately.
??? These parts are also included in Carbide Seat Kit 244199, which may be purchased separately.
?????? These parts are included with pump 287513.
205
207*
221*
220
???*214
???*227
217*
216*
229
206*
210
215
212???
213
231
ti5490a
310894 11
Parts
Model 249122, Series A;
221*
222
219*
218*
217* 216*
229
206*
210
211
215
212???
213
ti5673a
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Parts
Model 287579, Series A
201
202
228
224*
*203
223*
204*
221*
222
219*
*218 208*
*These parts are also included in Repair Kit 248213, which may be purchased separately.
??? These parts are also included in Carbide Seat Kit 244199, which may be purchased separately.
?????? These parts are included with pump 287579.
205
207*
221*
???*214
???*227
217*
216*
229*
206*
210
215
212???
213
220
ti6277a
310894 13
Parts
Model 287928, Series A
201
202
228
224*
*203
223*
204*
221*
222
219*
*218 208*
*These parts are also included in Repair Kit 249189, which may be purchased separately.
??? These parts are also included in Carbide Seat Kit 244571, which may be purchased separately.
?????? These parts are included with pump 287928.
205
207*
221*
???*214
???*227
217*
216*
229*
206*
210
215
212???
213
220
ti6277a
14 310894
Parts
Model 287929, Series A
201
202
228
224*
*203
223*
204*
221*
222
219*
*218 208*
*These parts are also included in Repair Kit 248213, which may be purchased separately.
??? These parts are also included in Carbide Seat Kit 244199, which may be purchased separately.
?????? These parts are included with pump 287929.
205
207*
221*
???*214
???*227
217*
216*
229*
206*
210
215
212???
213
220
ti6277a
310894 15
Parts
Model 289590, Series A;
?????? These parts are included with pump 289590.
220
221*
222
219*
218*
217* 216*
229
206*
210
211
215
212???
213
ti5673a
16 310894
Notes
310894 17
Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale 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, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or sub- stitution of
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 any 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 mak- ing 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 reconnais- sent 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 ?? la suite de ou en rapport, directement ou indirectement, 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:
All written and visual data contained in this document reflect the latest product information available at the time of publication. Graco reserves the right to make changes at any time without notice.
This manual contains English GN 310894 MM 310894
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN
www.graco.com
2/2005, Rev 03/2008
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