Graco Series A Istruzioni operative

Repair

Displacement Pump 310643T

8016A

3300 psi (227 bar, 22.7 MPa) Maximum Working Pressure

Model 248204, Series A

UltrarMax II and Ultimate Mx II 695 and 795

ASM Zip--Sprayt2700 Plus, 3100 Plus

ASM AllPro Mach 8600 Plus and 11000 Plus

ASM H2700 Plus

Model 255968, Series A

ASM 3600G Plus

Model 248205, Series A

Ultra Max II and Ultimate Mx II 1095 and 1595

Model 249059, Series A

TexSpraytMark V

Model 249057, Series A

TexSpray Mark V

Model 277069, Series A

LineLazertIV 3900, R300

Model 277070, Series A

LineLazertIV 5900

Model 253056, Series A

Mark IV

Model 257146, Series A

Ironman 300E and Ironman 500G

Important Safety instructions

Read all warnings and instructions in this manual.

Save these instructions.

2 310643

Table of Contents

Warnings 2......................................

Service 3.......................................

Technical Data 15................................

Parts, Pump

248204, 255968 16.............................

248205, 249057, 249059, 277070, 257146 17.....

253056 18.....................................

Warranty 20.....................................

WARNING

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

DDo 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.

DCheck equipment daily. Repair or replace worn or damaged parts immediately.

DDo not alter or modify equipment.

DRead all instruction manuals, tags, and labels before operating the equipment.

DUse equipment only for its intended purpose. Call your Graco distributor for information.

DDo 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.

DComply with all applicable safety regulations.

MOVING PARTS HAZARD

Moving parts can pinch or amputate your fingers.

DKeep clear of moving parts.

DDo 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.

SKIN INJECTION HAZARD

High-pressure fluid from gun, hose leaks or ruptured components will pierce skin. This may look like

just cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.

DDo not point the gun at anyone or at any part of the body.

DDo not put your hand over the spray tip.

DDo not stop or deflect leaks with your hand, body, glove or rag.

DDo not spray without tip guard and trigger guard installed.

DEngage the gun trigger safety when you stop spraying.

DFollow the Pressure Relief Procedure on page 3 if the spray tip clogs and before cleaning,

checking or servicing the equipment.

3310643

Service

Pressure Relief Procedure

WARNING

PRESSURIZED EQUIPMENT H

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:

Dareinstructedtorelievethepressure,

Dstop spraying,

Dcheck or service any of the system equipment,

Dor 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.

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

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.

4 310643

Service

Repair When Pump Is Off The Sprayer

Disassembling the pump

Fig. 1. Remove packing nut (202) and throat adjust-

ment spacer (228).

Fig. 1 7568A

228

ti2332a

202

Fig. 2. Unscrew intake valve from cylinder.

Fig. 2 7569A

Fig. 3. Disassemble intake valve. Clean and inspect.

O-ring (227) may require a pick for removal.

Fig. 3

227

7570e

Fig. 4. Tap piston rod out of cylinder with a hammer or

flip over and tap piston rod out against a bench.

Fig. 4 7571a

Note: Sleeve may come out

of cylinder with piston rod.

Fig. 5. Remove piston rod from sleeve, or remove

sleeve from cylinder. Mark IV: Remove sleeve spacer

(230) from sleeve.

Fig. 5 7572A

5310643

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.

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 Loctiterto the threads.

Fig. 6 7576A

Fig. 7. Remove packings and glands from piston rod.

Fig. 7

Not

used on

248204

253056

255968

ti3940b

Fig. 8. Remove throat packings and glands from cylin-

der. Discard throat packings and glands.

Fig. 8 7573B

Not

used on

248204

253056

255968

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.

Fig. 9

216

218 208

204

217

210

Not

used on

248204

253056

255968

7574d

229

6 310643

Service

Fig. 10. Install ball (206) in piston rod. If Loctiteris ap-

plied to piston valve threads, ensure that none gets on

ball.

Fig. 10

206

7575A

Fig. 11. Tighten piston valve to piston rod as specified:

Fig. 11

Torque to 27 +/--3 ft-lb

(248204, 253056, 255968,

277069)

Torque to 55 +/--3 ft-lb

(248205, 249057, 249059,

277070, 257146)

7576A

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.

Fig. 12

203

224

223

204

Not

used on

248204

253056

255968

7573f

Fig. 13. Install seal (201) into packing nut (202). Install

throat adjustment spacer (228) onto packing nut.

Loosely install packing nut into cylinder.

Fig. 13

201

202

7581A

228

7310643

Service

Fig. 14. Grease piston packings.

Fig. 14 ti7578c

CAUTION

Do not slide piston assembly into top of sleeve as

this may damage piston packing.

Fig. 15. Slide piston assembly into bottom of sleeve.

Fig. 15 7577A

Fig. 16. Grease top inch or two of piston rod that will

go through the cylinder throat packings.

7579A

Fig. 16

Fig. 17. Grease o-rings (221) and place on sleeve.

Slide sleeve/piston rod assembly into bottom of cylind-

er. Replace o-ring (207) if desired.

Note: O-ring (207) is not required for safe pump opera-

tion.

Fig. 17 7582A

221

207

8 310643

Service

Fig. 18. Mark IV: Install o-ring (231) on sleeve spacer

(230) and install sleeve spacer on sleeve.

Fig. 18

ti7340a

231

230

Fig. 19. 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.

Fig. 19

227

7570f

212

214

Fig. 20. Install intake valve on cylinder. If a wrench is

used torque as follows:

67 +/--5 ft-lb (Model 248204, 253056, 255968,

277069)

80 +/--5 ft-lb (Model 248205, 249057, 249059,

277070, 257146 )

If a wrench is not used, be sure intake valve is bot-

tomed out against cylinder.

Fig. 20 7569A

Fig. 21. Torque packing nut (202) down onto adjust-

ment spacer (228) 100 +/--10 in-lb.

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.

Fig. 21

202

228

7568A

9310643

Service

Repair When Pump Is On The Sprayer

WARNING

SKIN INJECTION HAZARD

To reduce the risk of serious injury,

whenever you are instructed to relieve

pressure, follow the Pressure Relief

Procedure on page 3.

Fig. 1. Remove intake valve.

Fig. 1 ti4258a

Fig. 2. Push up retaining spring (26).

Fig. 2 26 ti4258a

Fig. 3. Push out pin (29).

Fig. 3

ti4258a

Fig. 4. Disassemble intake valve. Clean and inspect.

O-ring (227) may require a pick for removal.

Fig. 4 7570A

227

10 310643

Service

Fig. 5. Remove piston rod and sleeve.

7746A

Fig. 5

Fig. 5. Invert piston rod and sleeve and pound on hard

surface until piston rod comes out of sleeve. Mark IV:

Remove sleeve spacer from sleeve.

Fig. 6 7572A

ti7339a

Fig. 7. Remove packing nut (202)

7726A

Fig. 7

202

Fig. 8. Invert piston rod and insert into cylinder to force

out throat packings.

Fig. 8 ti4258a

Fig. 9. Insert piston rod into cylinder with pin hole up

and piston valve down. Insert pin into piston rod and

crank shaft.

Fig. 9 ti4258a

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