Graco 310643u User Manual
Repair
ti2311
310643U
Displacement Pump
Use only genuine Graco replacement parts. Use of non-Graco replacement parts may void
warranty.
3300 psi (22.7 MPa, 227 bar) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this manual.
Be familiar with the controls and the proper usage
of the equipment. Save these instructions.
Model 248204, Series A
UltraMax II and Ultimate MX II 695/795
ASM Zip-Spray 2700 Plus, 3100 Plus
ASM AllPro Mach 8600 Plus and 11000 Plus
ASM H2700 Plus
EN
Model 255968, Series A
ASM 3600G Plus
Model 248205, Series A
UltraMax II and Ultimate MX II 1095/1595
Model 249059, Series A
TexSpray Mark V
Model 249057, Series A
TexSpray Mark V
Model 277069, Series A
LineLazer IV 3900, R300
Model 277070, Series A
LineLazer IV5900
Model 253056, Series A
Mark IV
Model 257146, Series A
Ironman 300E and Ironman 500G
Warnings
WARNING
Table of Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Parts - Pump 248204, 277069, 255968 . . . . . . . . . 14
Parts - Pump 248205, 249057, 249059, 277070,
257146 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Parts - Pump 253056 . . . . . . . . . . . . . . . . . . . . . . . 16
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 18
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation
point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these
symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard
symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information
about your material, request MSDS from distributor or retailer.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manu-
facturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and create
safety hazards.
• Use equipment only for its intended purpose. Call your distributor for information.
• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or flu-
ids containing such solvents.
• Comply with all applicable safety regulations.
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,
follow the Pressure Relief Procedure and disconnect all power sources.
SKIN INJECTION HAZARD
High-pressure spray is able to inject toxins into the body and cause serious bodily injury. In the event that
injection occurs, get immediate surgical treatment.
• Do not aim the gun at, or spray any person or animal.
• Keep hands and other body parts away from the discharge. For example, do not try to stop leaks with
any part of the body.
• Always use the nozzle tip guard. Do not spray without nozzle tip guard in place.
• Do not leave the unit energized or under pressure while unattended. When the unit is not in use, turn
off the unit and follow the Pressure Relief Procedure for turning off the unit.
• Always engage the trigger lock when not spraying. Verify the trigger lock is functioning properly.
2 310643U
Service
Service
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.
1. Engage trigger lock.
2. Turn ON/OFF switch to OFF.
3. Unplug power cord.
4. Disengage trigger lock. Hold metal part of gun
against grounded metal pail and trigger gun into pail
to relieve pressure.
5. Engage the trigger lock.
6. Open all fluid drain valves in the system, having a
waste container ready to catch drainage. Leave drain
valve(s) open until you are ready to spray again.
Pump Repair Kits
Pump Repair Kit
248204, 255968 248212
253056 287825
248205, 249057, 249059,
257146
248213
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
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.
7. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved after following the steps above, VERY SLOWLY loosen tip
guard retaining nut or hose end coupling to relieve
pressure gradually, then loosen completely. Clear
hose or tip obstruction.
310643U 3
COMPONENT RUPTURE HAZARD
To reduce the risk of serious injury from pressurized
fluid, never use sharp or pointed tools to remove
sleeve. If the sleeve cannot be removed easily, return
the sleeve and cylinder to a Graco distributor for
removal.
NOTE:
Remove and clean sleeve when repacking pump.
Service
ti7566a
228
202
ti7569a
ti7570e
233
215
214
212
213
227
ti23115a
NOTE: Sleeve may come out
of cylinder with piston rod.
ti7571a
ti7572a
Repair When Pump is Separated
From Sprayer
Disassembling the Pump
1. Remove packing nut (202) and o-ring (228).
2. Unscrew intake valve from cylinder.
4. Tap piston rod out of cylinder with a hammer or flip
over and tap piston rod out against a bench.
5. Remove piston rod from sleeve, or remove sleeve
from cylinder. Mark IV models: Remove sleeve
spacer (230) from sleeve.
3. Disassemble intake valve. Clean and inspect o-ring
(227). NOTE: A pick may be required to remove
o-ring.
4 310643U
COMPONENT RUPTURE HAZARD
ti7576a
ti3940b
Not
used on
248204,
253056,
255968
ti7573b
Not
used on
248204,
253056,
255968
216
218 208
204
217
229
ti7574d
Not
used on
248204,
253056,
255968
To reduce the risk of serious injury from pressurized
fluid, 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.
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 thread sealant to the
threads.
Service
8. Remove throat packings and glands from cylinder.
Discard throat packings and glands.
Assembling the Pump
1. 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). Threads are good for four
repackings. Use thread sealant on piston valve
threads after four repackings.
210
7. Remove packings and glands from piston rod.
310643U 5
Service
ti7575a
206
ti7576a
ti7573f
224
223
204
Not
used on
248204,
253056,
255968
ti7581a
201
202
228
ti7578c
2. Install ball (206) in piston rod. If thread sealant is
applied to piston valve threads, make sure that none
gets on ball.
3. Tighten piston valve to piston rod as specified:
Models Torque
248204, 253056,
27 +/-3 ft-lb.(36.1 +/-4.1 N•m)
255968, 244069
248205, 249057,
55 +/-3 ft-lb.(74.6 +/-4.1 N•m)
249059, 277070,
257146
4. Soak all leather packings in SAE 30W oil for one
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.
203
5. Install seal (201) into packing nut (202). Install
o-ring (228) onto packing nut. Loosely install packing nut into cylinder.
6. Grease piston packings.
NOTICE
Do not slide piston assembly into top of sleeve as this
may damage piston packing.
6 310643U
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