Graco GH 130 Operating instructions

334654B
EN
Repair
GH™130/200/230/300 and
DutyMax GH/EH™230/300 Displacement Pump
For professional use only.
Not approved for use in explosive atmosphere or hazardous locations.
For portable airless spraying of architectural paints and coatings.
Models: 24B748, 24W995, 24W996, 24W997, 24W998, 24W999, 24X001
Important Safety Instructions
Read all warnings and instructions in this manual and related manuals.
Be familiar with the controls and the proper usage of the equipment.
Save these instructions.
Use only genuine Graco replacement parts.
The use of non-Graco replacement parts may void warranty.
24X00124W999
24W996
24W998
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24B748 24W997
24W995

Table of Contents
2334654B
Table of Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Disassemble Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Assemble Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pump 24B748 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Pump 24W995 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Pump 24W996 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Pump 24W997 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Pump 24W998 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Pump 24W999 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Pump 24X001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Warnings
334654B 3
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.
SKIN INJECTION HAZARD
High-pressuresprayisabletoinjecttoxins intothe body andcause serious bodilyinjury. Inthe
event that injection occurs, get immediate surgical treatment.
•Do not aim the gun at, or spray any person or animal.
•Keephandsand other bodyparts awayfromthe discharge.Forexample,donot trytostop
leaks with any part of the body.
•Always use the nozzle tip guard. Do not spray without nozzle tip guard in place.
•Use Graco nozzle tips.
•Usecautionwhencleaningandchangingnozzletips.Inthecasewherethenozzletipclogs
while spraying, follow the Pressure Relief Procedure for turning off the unit and relieving
the pressure before removing the nozzle tip to clean.
•Equipment maintains pressure after power is shut off. Do not leave the equipment
energized or under pressure while unattended. Follow the Pressure Relief Procedure
when the equipment is unattended or not in use, and before servicing, cleaning, or
removing parts.
•Check hoses and parts for signs of damage. Replace any damaged hoses or parts.
•Thissystemiscapableofproducing3300psi.UseGracoreplacementpartsoraccessories
that are rated a minimum of 3300 psi.
•Always engage the trigger lock when not spraying. Verify the trigger lock is functioning
properly.
•Verify that all connections are secure before operating the unit.
•Know how to stop the unit and bleed pressure quickly. Be thoroughly familiar with the
controls.
PRESSURIZED ALUMINUM PARTS HAZARD
Useof fluids thatareincompatiblewithaluminum in pressurizedequipment can causeserious
chemical reaction and equipment rupture. Failure to follow this warning can result in death,
serious injury, or property damage.
•Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon
solvents or fluids containing such solvents.
•Do not use chlorine bleach.
•Many other fluids may contain chemicals that can react with aluminum. Contact your
material supplier for compatibility.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury,
including eye injury, hearing loss, inhalation of toxic fumes, and burns. This protective
equipment includes but is not limited to:
•Protective eye wear, and hearing protection.
•Respirators, protective clothing, and gloves as recommended by the fluid and solvent
manufacturer.
CALIFORNIA PROPOSITION 65
ThisproductcontainsachemicalknowntotheStateofCaliforniatocausecancer,birthdefects
or other reproductive harm. Wash hands after handling.

Repair
4334654B
Repair
Trigger Lock
Always engage the trigger lock when sprayer
is stopped to prevent the gun from being
triggered accidentally by hand or if dropped
or bumped.
Pressure Relief Procedure
1. Engage trigger lock.
2. Ifapplicable,turnelectricmotorON/OFF
switch to OFF position. Wait 7 seconds
for power to dissipate.
3. Unplug power cord or shut engine off.
This equipment stays pressurized until
pressure is manually relieved. To help
prevent serious injury from pressurized
fluid, such as skin injection, splashed fluid
and moving parts, follow the Pressure
Relief Procedure whenever sprayer is
stopped and before sprayer is cleaned or
checked, and before equipment is
serviced.
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OI
I
O
t
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Repair
334654B 5
4. Disengage trigger lock.
5. Hold a metal part of the gun firmly to a
grounded metal pail. Trigger the gun to
relieve pressure.
Solvent and oil-based fluids: follow
local code. Use only conductive metal
pails, placed on a grounded surface
such as concrete.
Do not place pail on a non-conductive
surface such as paper or cardboard
which interrupts grounding continuity.
6. Engage trigger lock.
7. Open any fluid drain valves in system.
Leave drain valves open until ready to
spray again.
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Repair
6334654B
Disassemble Pump
1. Remove packing nut and throat
adjustment spacer.
2. Unscrew cylinder from intake valve.
3. Disassemble intake valve. Clean and
inspect. O-ring may require a pick for
removal.
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NOTICE
Ifusingapick toremovetheO-ringusecare
to avoid damage to the machined surfaces.
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Repair
334654B 7
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.
6. Unscrew piston valve from piston rod.
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Do not clean or wipe the piston valve
threads.Cleaning thepistonvalvethreads
coulddestroythespecialsealingpatchand
cause the piston valve to come loose
during operation, causing a pump burst
and possible serious bodily injury.

Repair
8334654B
7. Cleanandinspectparts.(Thepistonhas
a special thread locking/sealing patch.
Do not remove the patch. The patch
allows for disassembly/assembly
procedures before it is necessary to
apply thread sealant to the threads. On
fifth assembly apply thread sealant to
threads.
8. Remove and discard throat packing and
glands from the cylinder.
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Repair
334654B 9
Assemble Pump
1. If applicable, soak leather packings in
SAE 30W oil for one hour before
assembly.
2. Install ball in piston rod. Apply thread
sealant to piston valve threads; ensure
that none gets on the ball.
3. Torque to 55 ± 3 ft-lb (75 ± 4 N•m).
Leather
Packings
Blue
Brown
Blue
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Leather
Packings
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Repair
10 334654B
4. Assemble leather throat packings
soaked earlier.
5. Loosely install packing nut with o-ring
onto cylinder.
6. Install o-rings inside cylinder and on
sleeve. Slide sleeve into bottom of
cylinder. Replace o-ring if necessary.
7. Apply liberal amounts of grease or oil to
piston packings.
8. Grease top inch or two of piston rod that
will go through the cylinder throat
packings. Gently guide displacement
rod up through throat packings. Tap
bottomofpistonvalveasnecessarywith
a leather or plastic hammer.
Leather
Packing
s
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