- For portable spray application of architectural paints and coatings
or replacement pump for Graco GMax
t
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
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 55440--1441
Copyright 2005, Graco Inc. is registered to I.S. EN ISO 9001
ti6177a
Table of Contents
Warnings2......................................
Service3.......................................
Technical Data9.................................
Parts, Pump
28751210.....................................
2875131 1.....................................
24912212.....................................
Warnings
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death 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.
28757913.....................................
28792814.....................................
28792915.....................................
28959016.....................................
Warranty18.....................................
Graco Phone Number18..........................
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
D Use 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.
D Do not use 1,1,1--trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents in pressurized aluminum equipment. Such use could result in a
chemical reaction, with the possibility of explosion.
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.
D Pressurized equipment can start without warning. Before checking, moving or servicing equipment,
follow the Pressure Relief Procedure on page 3. Disconnect power cord.
2310894
Service
D
Pressure Relief Procedure
WARNING
PRESSURIZED EQUIPMENT HAZAR
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. T o
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 areinstructedtorelievethepressure,
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.
Pump Repair Kits
PumpRepair Kit
287512248212
287513248213
287579248213
249122249123
287928249189
287929248213
289590249123
Tools Needed
Vise
12 in. adjustable, open end wrench (2)
Hammer, 20 oz maximum
Small screwdriver
Throat Seal Liquid
Pick or long small screwdriver
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 relieve pressure gradually, then loosen completely. Now
clear tip or hose.
Cleaning and In sp ectin g 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.
Fig. 3. Disassemble intake valve. Clean and inspect.
O-ring (227) may require a pick for removal.
21 1
used on
249122,
289590
227
7570e
Fig. 3
Fig. 4. Tap piston rod out of cylinder with a hammer or
flip over and tap piston rod out against a bench.
Fig. 2. Unscrew intake valve from cylinder.
ti6179a
Fig. 2
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.
Fig. 5
ti6181a
4310894
WARNING
Service
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.
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.
Not used
on
287512
Fig. 8
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.
ti6182a
ti6183a
Fig. 6
Fig. 7. Remove packings and glands from piston rod.
Not
used on
287512
ti6184a
Fig. 7
Fig. 8. Remove throat packings and glands from cylinder. Discard throat packings and glands.
Not
used on
287512
ti6185a
218208204
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. 9
210
229
216
217
5310894
Service
Fig. 10. Install ball (206) in piston rod. If Loctiter is applied to piston valve threads, ensure that none gets on
ball.
206
ti6186a
Fig. 10
Fig. 1 1. Tighten piston valve to piston rod as specified:
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.
224
Not
used on
287512
223
203
204
ti6188a
Fig. 12
Torque to 27 +/--3 ft-lb
(36.61 +/-- 4.06 N• m)
(287512)
Torque to 55 +/--3 ft-lb
(74.57 +/-- 4.06 N• m)
(249122, 287513,
289590)
Fig. 11
ti6187a
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 o--ring
on 249122,
228
289590 )
Fig. 13
ti6189a
6310894
CAUTION
Service
Note: O-ring (207) is not required for safe pump operation.
Never slide piston assembly (222) into top of
sleeve (220) as this may damage piston packings.
Fig. 14. Grease o-rings (221) and place inside
cylinder (205) and on sleeve (220). Slide sleeve (220)
into bottom of cylinder (205). Replace o-ring (207) if
desired.
Place inside cylinder (205) and
push to shoulder
with sleeve (220).
205
220
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 protrudes at the top and piston packings are totally inside
the sleeve (220).
205
207
222
221
Fig. 14
ti6193a
207
ti6273a
Fig. 15
7310894
Service
Fig. 16. Reassemble intake valve with new o-ring
(227), seat (212) and ball (214). Seat may be flipped
over and used on other side. Clean seat thoroughly.
21 1
used on
214
212
227
ti6197a
Fig. 16
Fig. 17. Install intake valve on cylinder. If a wrench is
used torque as follows:
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 operation before a repacking is required.
* These parts are also included in Repair Kit 249123,
which may be purchased separately.
*223
201
202
228
224*
203*
204*
205
207*
*203
†*214
†*227
221
222
219*
218*
217*
216*
229
206*
210
21 1
215
212†
213
† These parts are also included in Carbide Seat Kit
240918, which may be purchased separately.
†† These parts are included with pump 289590.
16310894
221*
220
ti5673a
Notes
17310894
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 materialand workmanship on the date of sale tothe 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
equipmentdetermined 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
faultyinstallation, misapplication,abrasion, corrosion, 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
equipmentwill be returned to the originalpurchaser transportation prepaid. If inspectionof the equipment does not disclose any defect
in material or workmanship, repairs will be made at a reasonable charge, which charges may include the c osts 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’ssole obligationand 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, incidentalor 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 broughtwithin two (2) years ofthe
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 theirmanufacturer. Graco willprovide 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 CUST
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 rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires
exécutés, donnés ou intentés à la suite de ou en rapport, directement ou indirectement, avec les procedures concernées.
OMERS
Graco Phone Number
TO PLACE AN ORDER, contact your Graco distributor, or call this number to identify the distributor closest to you:
1--800--690--2894 Toll Free
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.
18310894
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 55440-- 1441
www.graco.com
2/2005, Rev 03/2008
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