Graco Series A Operation manual

308815
Rev. J
INSTRUCTIONS-PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
Displacement Pump
Used in the Ultra Max 695 Sprayers
3000 psi (207 bar, 21 MPa) MAXIMUM WORKING PRESSURE
Model 243189, Series B
Model 239769, Series A
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1999, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
9672A7738A
Model 239769 Model 243189
Parts

2308815
WARNING
INJECTION HAZARD
Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely
serious injury, including 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 4 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.
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, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
Keep clear of all moving parts when starting or operating the pump.
Before servicing the equipment, follow the Pressure Relief Procedure on page 4 to prevent the
equipment from starting unexpectedly.

308815 3
WARNING
INSTRUCTIONS
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment 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 distributor.
Do not alter or modify this equipment. Use only genuine Graco parts.
Check equipment daily. Repair or replace worn or damaged parts immediately.
Do not exceed the maximum working pressure of the lowest rated system component. Refer to the
Technical Data on page 9 for the maximum working pressure of this equipment.
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.
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.
Do not use hoses to pull equipment.
Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 82C (180F) or below –40C (–40F).
Do not lift pressurized equipment.
Comply with all applicable local, state, and national fire, electrical, and safety regulations.
Wear ear protection when operating this equipment.
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury.
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.
Electrically disconnect all equipment in the spray area.
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 operating or if fumes are present.
Do not operate a gasoline engine in the spray area.
Ground the equipment and the object being sprayed.

4308815
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:
are instructed to relieve the pressure,
stop spraying,
check or service any of the system equipment,
or install or clean the spray nozzle.
1. Engage gun safety latch.
2. Turn ON/OFF switch to OFF.
3. Unplug power cord.
4. Disengage gun safety latch. Hold metal part of gun
against grounded metal pail and trigger gun into
pail to relieve pressure.
5. Engage gun safety latch.
6. Open any fluid drain valves in system. Leave drain
valve open until ready to dispense again.
Repair Kit
Pump Repair Kit
243189, 239769 239939
Tools Needed
Vise
12 in. adjustable, open end wrench
15 in. adjustable, open end wrench
Hammer, 20 oz maximum
Small screwdriver
Throat Seal Liquid
Pick or long small screwdriver
Punch
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 cylinder
and the outside of the piston rod, which must not be
worn or scratched. Replace worn or damaged parts.

308815 5
Service
Disassembling the pump
Fig. 1. Remove packing nut (202) and throat
adjustment spacer (228).
ti9672b
or
Fig. 1
202
228
9672A
Fig. 2. Loosen jam nut (226). Remove manifold (229)
and the o-ring (221).
Fig. 2
229
221
226
9674A
Fig. 3. Unscrew cylinder from intake valve.
Fig. 3 9675A
Fig. 4. Disassemble intake valve. Clean and inspect.
O-ring (227) may require a pick for removal. Replace
o-ring (227).
Fig. 4
227
9676A
Fig. 5. Tap piston rod out of cylinder with a hammer or
on a bench top.
Fig. 5 9697A

6308815
Service
Fig. 6. Remove throat packings and glands from
manifold. Discard throat packings and glands.
Fig. 6 9678A
WARNING
COMPONENT RUPTURE HAZARD
Do not clean or wipe the piston valve
threads. Cleaning the piston valve
threads could destroy the plastic patch
and cause the piston valve to come loose during
operation, causing pump bursting and possible
serious bodily injury.
Fig. 7. Unscrew piston valve from piston rod. Clean
and inspect parts. The piston has a plastic sealing
patch. Do not remove the patch. The patch allows four
disassembly/assembly procedures before it is
necessary to apply Loctiteto the threads.
Fig. 7 9677A
Fig. 8. Remove packings and glands from piston rod.
Fig. 8 9680A
Reassembling the pump
Fig. 9. Soak all leather packings in SAE 30W oil for 1
hour minimum prior to assembly. Stack male gland
(219) on piston rod. Alternately stack UHMWPE (208)
and leather (218) packings (note orientation) on piston
rod. Install female gland (217). Install backup washer
(216) and u-cup (209) (note orientation) on piston
valve (210). The special sealing patch on piston valve
threads is good for four repackings. Use Loctiteon
piston valve threads after four repackings.
Fig. 9
216
218
209
208
219 217
210
9679A
Fig. 10. Install ball (206) in piston rod. If Loctiteis
used, ensure no Loctite gets on ball.
Fig. 10
206
9681A

308815 7
Service
Fig. 11. Tighten piston valve to piston rod as specified:
7768A
Fig. 11
Torque to 30 3 ft-
lb
41 4.1 Nm
Fig. 12. Soak all leather packings in SAE 30W oil for 1
hour minimum prior to assembly. Place male gland
(204) in manifold. Alternately stack UHMWPE (203)
and leather packings (223) (note orientation). Place
female gland (224) in top of cylinder. Seat packings.
Fig. 12
223
224
203
204
9695A
Fig. 13. Install seal (201) into packing nut (202). Install
throat adjustment spacer (228) onto packing nut.
Loosely install packing nut into manifold. O-ring
replaces metal clip ring on older models.
9696b
or
Fig. 13
201
202
228
Fig. 14. Grease piston packings and top edge of
cylinder.
Fig. 14 9682A
Fig. 15. Carefully slide piston assembly into top of
cylinder. Assure u-cup is not rolled over or damaged.
Fig. 15 9683A

8308815
Service
Fig. 16. Install cylinder in intake valve. Tighten to 60
5 ft-lb (81 6.8 Nm).
Fig. 16 9684A
Fig. 17. Grease top inch or two of piston rod.
Fig. 17 7773A
Fig. 18. Install jam nut (226) onto cylinder. Grease
o-ring (221*) and place on cylinder. Install manifold
(229) onto cylinder (205) and tighten to 60 5 ft-lb (81
6.8 Nm). Tighten jam nut (226) to 75 5 ft-lb (101.7
6.8 Nm).
Fig. 18
205*
221*
226
229
9685A
Fig. 19. Torque seal and packing nut (202) down onto
throat nut spacer (228) to 75 5 in-lb (8.5 0.5 Nm)
or an additional 1/2 turn from hand tight.
Remove throat nut spacer (228) when pump packings
begin to leak. Tighten packing nut (202) until leakage
stops or lessens This allows approximately 100 gallons
of operations before repacking. O-ring replaces metal
clip ring on older models.
9686b
or
Fig. 19
202
228

308815 9
Service
223 203
218 208 V-MaxUHMWPE, blue
217
213
214
229
106
221
224
205
219
215
212
227
222
202
221
Fig 20
216
226
206
210
209
Leather
Leather
201
Cross Sectional Reference
V-MaxUHMWPE, blue
231
9687A
Technical Data
Working Pressure Range 0 – 3000 psi. . . . . . . . . . . . . .
(0 – 207 bar, 21 MPa)
Pump Inlet Size 3/4 npt(f). . . . . . . . . . . . . . . . . . . . . . . . .
Pump Outlet Size 1/4 npt. . . . . . . . . . . . . . . . . . . . . . . . .
Wetted Parts Aluminum, stainless steel,. . . . . . . . . . . .
zinc plated carbon steel, polyethylene,
acetal, PTFE, leather,
tungsten carbide, chrome plating, polyurethane
Graco Phone
Number
TO PLACE AN ORDER, contact your Graco distribu-
tor, or call this number to identify the distributor closest
to you: 1–800–690–2894 Toll Free

10 308815
Parts – Pump 243189
Model 243189, Series A
Displacement Pump
Includes items 201 to 231
Ref
No. Part No. Description Qty.
201 180656 SEAL, throat 1
202 193047 NUT, packing 1
203* 192710 V-PACKING, throat, 3
V-MaxUHMWPE, blue
204* 176754 GLAND, male, throat 1
205 243177 CYLINDER, pump 1
206* 105444 BALL, sst, 0.3125 in. 1
208* 192712 V-PACKING, piston 3
V-MaxUHMWPE, blue
209* 105522 SEAL, u-cup 1
210 243181 VALVE, piston 1
212*243190 KIT, seat, carbide 1
includes 214 and 227
213 196755 VALVE, intake (foot) 1
214*105445 BALL, sst, 0.5000 in. 1
215 196896 GUIDE, ball 1
216* 186652 WASHER, backup 1
217* 180073 GLAND, female, piston 1
218* 176749 V-PACKING, leather, piston 2
219* 195129 GLAND, male 1
221* 108526 O-RING, PTFE 2
222 243178 ROD, piston 1
223* 176755 V–PACKING, leather, throat 2
224* 176757 GLAND, female 1
226 195548 NUT, jam, 1–3/8–18 unef–2b 1
227* 195136 PACKING, o-ring 1
228 117459 O-RING, 1
(replaces 195368 metal clip ring)
229 237661 MANIFOLD, pump 1
230 192849 LABEL, warning 1
231195134 Spacer, ball guide 1
* These parts are also included in Repair Kit 239939,
which may be purchased separately. Kit also in-
cludes o-ring 104938 for Lo-boy suction tube.
These parts are also included in Carbide Kit
243190, which may be purchased separately.
or
ti9688b
*223
215
210
201
202
224*
203*
204*
205
221*
222
219*
214*
217*
218*
209*
212
227*
213
216*
*208
221*
228
206*
226
229
230
231