Instructions-Parts

AirPro™ Pressure
Feed Airspray Gun 312414U
EN

Conventional, HVLP, and compliant guns for specialty industrial applications.

For professional use only.

100 psi (0.7 MPa, 7 bar) Maximum Air Inlet Pressure

300 psi (2.1 MPa, 21 bar) Maximum Fluid Inlet Pressure

Important Safety Instructions

Read all warnings and instructions in
this manual. Save these instructions.

See page 3 for model information.

ti11094a

ll 2 G
Contents
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General Metal Spray Guns . . . . . . . . . . . . . . . . . 3
General Metal with Stainless Steel Tip . . . . . . . . 3
Automotive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Stain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Waterborne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
High Wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Adhesives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Spatter Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Air Brush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Gun Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Conventional Guns . . . . . . . . . . . . . . . . . . . . . . . 6
HVLP Guns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Compliant Guns . . . . . . . . . . . . . . . . . . . . . . . . . 6
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect Air and Fluid Lines . . . . . . . . . . . . . . . . 7
Ground the Gun . . . . . . . . . . . . . . . . . . . . . . . . . 7
Flush Before Using Equipment . . . . . . . . . . . . . . 7
Adjust Spray Pattern . . . . . . . . . . . . . . . . . . . . . . 8
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 9
Apply Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Volatile Organic Compounds (VOC) Regulation . 9
Daily Gun Maintenance . . . . . . . . . . . . . . . . . . . . . 10
General Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Flush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Clean Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Compliant Cleaning Methods . . . . . . . . . . . . . . 11
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
California Proposition 65 . . . . . . . . . . . . . . . . . . . 22
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 24
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 24

2 312414U
 Models

Models

Conventional HVLP Compliant

Max. Max. Max.

Orifice HVLP/Compliant HVLP/Compliant HVLP/Compliant
Size Air Pressure Air Pressure Air Pressure
in. (mm) Model Series psi (MPa, bar) Model Series psi (MPa, bar) Model Series psi (MPa, bar)

General Metal Spray Guns

0.020 (0.5) 288726 A N/A 288935 A 19 (0.13, 1.3) 288942 A 29 (0.2, 2.0)
0.030 (0.8) 288929 A N/A 288936 A 19 (0.13, 1.3) 288943 A 29 (0.2, 2.0)
0.042 (1.1) 288930 A N/A 288937 A 19 (0.13, 1.3) 288944 A 29 (0.2, 2.0)
0.055 (1.4) 288931 A N/A 288938 A 19 (0.13, 1.3) 288945 A 29 (0.2, 2.0)
0.070 (1.8) 288932 A N/A 288939 A 19 (0.13, 1.3) 288946 A 29 (0.2, 2.0)
0.086 (2.2) 288933 A N/A 288940 A 19 (0.13, 1.3) 288947 A 29 (0.2, 2.0)
0.110 (2.8) 288934 A N/A 288941 A 19 (0.13, 1.3) 288948 A 29 (0.2, 2.0)

General Metal with Stainless Steel Tip

0.042 (1.1) 288949 A N/A 288952 A 19 (0.13, 1.3) 288955 A 29 (0.2, 2.0)
0.055 (1.4) 288950 A N/A 288953 A 19 (0.13, 1.3) 288956 A 29 (0.2, 2.0)
0.070 (1.8) 288951 A N/A 288954 A 19 (0.13, 1.3) 288957 A 29 (0.2, 2.0)
0.042 (1.1) 24U187** A N/A
0.055 (1.4) 24U188** A N/A

Automotive
0.030 (0.8) 288929 A N/A -- -- -- -- -- --
0.040 (1.0) -- -- -- 289034 A 29 (0.2, 2.0) 289036 A 35 (0.24, 2.4)
0.042 (1.1) 288930 A N/A -- -- -- -- -- --
0.042 (1.1) 24D472* A N/A -- -- -- -- -- --
0.047 (1.2) -- -- -- 289035 A 29 (0.2, 2.0) 289037 A 35 (0.24, 2.4)
0.055 (1.4) 288931 A N/A 289541 A 29 (0.2, 2.0) 289542 A 35 (0.24, 2.4)
* High production
** Assembled for higher air flow volume.

312414U 3
Models

Conventional HVLP Compliant

Max. Max. Max.

Orifice HVLP/Compliant HVLP/Compliant HVLP/Compliant
Size Air Pressure Air Pressure Air Pressure
in. (mm) Model Series psi (MPa, bar) Model Series psi (MPa, bar) Model Series psi (MPa, bar)

Stain
0.020 (0.5) 288958 A N/A 288960 A 22 (0.15, 1.5) 288962 A 29 (0.2, 2.0)
0.030 (0.8) 288959 A N/A 288961 A 22 (0.15, 1.5) 288963 A 29 (0.2, 2.0)
0.040 (1.0) 289109 A N/A 289110 A 22 (0.15, 1.5) 289111 A 29 (0.2, 2.0)
Waterborne
0.030 (0.8) 288964 A N/A 288967 A 23 (0.16, 1.6) 288970 A 23 (0.16, 1.6)
0.042 (1.1) 288965 A N/A 288968 A 23 (0.16, 1.6) 288971 A 23 (0.16, 1.6)
0.055 (1.4) 288966 A N/A 288969 A 23 (0.16, 1.6) 288972 A 23 (0.16, 1.6)

High Wear
0.059 (1.5) 288973 A N/A 288976 A 20 (0.14, 1.4) 288979 A 29 (0.2, 2.0)
0.070 (1.8) 288974 A N/A 288977 A 20 (0.14, 1.4) 288980 A 29 (0.2, 2.0)
0.086 (2.2) 288975 A N/A 288978 A 20 (0.14, 1.4) 288981 A 29 (0.2, 2.0)
0.110 (2.8) 289982 A N/A 289983 A 20 (0.14, 1.4) 289984 A 29 (0.2, 2.0)

Adhesives Air Brush

Conventional Conventional

Max. Max.
HVLP/Compliant HVLP/Compliant
Orifice Size Air Pressure Orifice Size Air Pressure
in. (mm) Model Series psi (MPa, bar) in. (mm) Model Series psi (MPa, bar)
0.051 (1.3) 288982 A N/A 0.042 (1.1) 24F202 A N/A
0.070 (1.8) 288983 A N/A

Spatter Gun
HVLP

Max.
HVLP/Compliant
Orifice Size Air Pressure
in. (mm) Model Series psi (MPa, bar)
0.042 (1.1) 288985 A 30 (0.21, 2.1)

4 312414U
 Warnings

Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equip-
ment. The exclamation point symbol alerts you to a general warning and the hazard symbol refers
to procedure-specific risk. Refer back to these warnings. Additional, product-specific warnings
may be found throughout the body of this manual where applicable.

WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode.
To help prevent fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric
lamps, and plastic drop cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes
are present.
• Ground all equipment in the work area. See Grounding instructions.
• If there is static sparking or you feel a shock, stop operation immediately. Do not
use equipment until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• 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 forms from
distributor or retailer.
• Check equipment daily. Repair or replace worn or damaged parts immediately with
genuine manufacturer’s replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and
hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.

312414U 5
Gun Selection

WARNING
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the
eyes or on skin and cause serious injury.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and
before cleaning, checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immedi-
ately.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on
skin, inhaled, or swallowed.
• Read MSDS’s to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to appli-
cable guidelines.
• Always wear impervious gloves when spraying or cleaning equipment.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in
the operating area of the equipment to help protect you from serious injury, including
eye injury, inhalation of toxic fumes, burns, and hearing loss. This equipment includes
but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
• Gloves
• Hearing protection

Gun Selection

Conventional Guns Compliant Guns

Excellent atomization and high production A compliant gun is a high transfer efficiency
rates typically with some reduction in transfer gun which has been tested to have a transfer
efficiency. efficiency greater than or equal to HVLP guns.
The Graco compliant guns have no restrictions
on air cap pressures, but the gun inlet pres-
HVLP Guns sure must remain under the maximum compli-
An HVLP gun is a high transfer efficiency gun ant pressure shown on pages 3-4 to remain in
which limits the air pressure at the air cap to compliance.
10 psi (0.07 MPa, 0.7 bar) maximum. In some
areas, an HVLP gun is required for compliance
with environmental standards.

6 312414U
 Setup

Setup
5. Connect a fluid hose to the fluid inlet fitting.
See FIG. 1.

At least one hose must provide a static

ground to the gun.

Connect Air and Fluid Lines

1. Shut off the air supply.

2. Install a shutoff valve (not supplied) down-

stream of the air regulator to shut off gun air inlet fluid inlet
air.

3. Install an inline air filter (not supplied) to FIG. 1 ti11094a

clean and dry the gun air supply.
6. Connect other end of the fluid hose to a
4. Connect a clean, dry, filtered air supply to regulated fluid supply line.
the air inlet fitting. See FIG. 1.
Ground the Gun
• Recommended 5/16 in. (7.9 mm) ID
hose, optional 3/8 in. (9.5 mm) ID hose. Check your local electrical code and pump
manual for detailed grounding instructions.
• Check that your shop air provides ade-
quate air flow. See Technical Data, Ground the spray gun through connection to a
page 23, for minimum cfm Graco-approved grounded fluid or air supply
requirements. hose.

• Set shop air pressure regulator (not Flush Before Using Equipment
supplied) according to fluid manufac-
turer’s recommendation. See maximum The equipment was tested with lightweight oil,
compliant air pressure on air cap. which is left in the fluid passages to protect
parts. To avoid contaminating your fluid with
• Make sure no air restrictions, such as oil, flush the equipment with a compatible sol-
low-volume cheater valves, obstruct vent before using the equipment. See Flush,
the air flow. page 10.

312414U 7
Setup

Adjust Spray Pattern 7. To reduce fluid flow, turn the fluid control
valve clockwise.
1. Rotate the air cap to achieve desired spray
pattern. See FIG. 2. • If the fluid control valve is turned clock-
wise all the way, the gun will emit only
air.
• If you cannot achieve the correct fluid
flow with the fluid control valve, a differ-
ent sized nozzle may be necessary.
For smaller fluid flow, use the next size
smaller nozzle. For a larger fluid flow,
use the next size larger nozzle.

ti4839a
8. Spray a test pattern. Evaluate the spray
FIG. 2
pattern size and atomization.

2. To achieve full fan pattern, open the air 9. To achieve a narrow spray pattern, turn air
control valve by turning the knob fully coun- control valve clockwise.
terclockwise. See FIG. 3.
10. To improve atomization, reduce the fluid
3. To create a round pattern, turn the pattern flow rate. Increasing the air pressure can
air off by turning the air control valve fully improve atomization but may result in poor
clockwise. See FIG. 3. Transfer Efficiency (TE) or non-compliant
operation.
4. Trigger gun and adjust gun air pressure.
Refer to Technical Data, page 23, for inlet
air pressure recommendations.

5. To establish the correct fluid flow, turn the

fluid control valve counterclockwise until no
restriction of the trigger movement is felt,
then turn out another half turn.

air control valve

fluid control valve

air inlet valve

ti11097a
FIG. 3

6. Adjust fluid pressure to achieve desired

fluid flow rate.

8 312414U
 Operation

Operation NOTE: See Troubleshooting, page 12, if you

experience an irregular pattern.

Pressure Relief Procedure When using the HVLP spray gun, instead of a
conventional airspray gun, you may need to
use a slightly slower hand movement and
make fewer passes with the gun to coat a part.
This is due to the reduced spray velocity pro-
Trapped air can cause the pump to cycle duced by lower HVLP air pressures, along with
unexpectedly, which could result in serious a larger fluid particle size because there is less
injury from splashing or moving parts. air to blow off solvents than is produced by
conventional airspray. Take care to avoid runs
1. Turn off air and fluid supply. or sags as you spray.

2. Hold a metal part of the gun firmly to a Volatile Organic Compounds

grounded metal pail. Trigger the gun to
relieve pressure. (VOC) Regulation
In certain states, spraying solvents that
Apply Fluid release VOCs into the atmosphere when
cleaning a spray gun is prohibited. To comply
NOTICE with these air quality laws, you must use a
Excessive atomizing air pressure can cleaning method that prevents the escape of
increase overspray, reduce transfer effi- VOC vapors into the atmosphere. See Com-
ciency, and result in a poor quality finish. pliant Cleaning Methods, page 11.
Regulatory agencies in some states prohibit
the operation of a spray gun above 10 psi
(69 kPa, 0.7 bar) atomizing air cap pressure.

1. Turn on shop air and fluid supply to the

gun. Set atomizing pressure and fluid pres-
sure with the gun fully triggered.

2. Adjust the pattern size and shape. See

page 8.

3. To achieve the best results when applying

fluid:

• Keep the gun perpendicular and

6 to 8 inches (150 to 200 mm) from object
being sprayed.

• Use smooth, parallel strokes across the

surface to be sprayed with 50% overlap.

312414U 9
Daily Gun Maintenance

Daily Gun Maintenance Flush

Flush before changing colors, before fluid can
dry in the equipment, at the end of the day,
before storing, and before repairing equip-
Follow Pressure Relief Procedure, page 9, ment. Flush at the lowest pressure possible.
when you stop spraying and before cleaning, Check connectors for leaks and tighten as
checking, servicing, or transporting equip- necessary. Flush with a fluid that is compatible
ment. Read Warnings, page 5. with the fluid being dispensed and the equip-
ment wetted parts.

General Tasks NOTE: See Compliant Cleaning Methods,

page 11, to comply with air quality laws if appli-
• Frequently lubricate the gun moving parts cable.
with a drop of non-silicone oil.
1. Follow Pressure Relief Procedure,
• Do not disassemble the spray gun if you page 9.
are having a spray pattern problem. See
Troubleshooting, page 12, for informa- 2. Disconnect the fluid supply hose and air
tion on how to correct the problem. supply hose from gun.

• Follow the Pressure Relief Procedure, 3. Connect the solvent supply hose to the
page 9. gun.

• Clean the fluid and air line filters daily. 4. Start the pump. Always use the lowest pos-
sible fluid pressure when flushing.
• Check for any fluid leakage from gun and
5. Hold a metal part of the gun firmly to a
fluid hoses.
grounded metal pail. Trigger the gun until
clean solvent dispenses.
NOTICE
Solvent left in gun air passages could result 6. Turn off solvent supply.
in a poor quality paint finish. Do not use any
cleaning method that may allow solvent into 7. Follow Pressure Relief Procedure,
the gun air passages. page 9,

• Do not point gun up while cleaning it. 8. Disconnect the solvent supply hose from
• Do not wipe gun with a cloth soaked in the gun.
solvent; wring out the excess.
• Do not immerse the gun in solvent.

10 312414U
 Daily Gun Maintenance

Clean Gun 6. Trigger the gun while you install the fluid
nozzle with the gun tool. Tighten the nozzle
NOTICE securely to 155-165 in-lb (17.5-18.6 N•m)
• Do not submerge gun in solvent. Solvent to obtain a good seal.
dissolves lubricant, dries out packings, and
clogs air passages. 7. Install the retaining ring (14) and
• Do not use metal tools to clean air cap air cap (13b).
holes as this may scratch them and distort
8. Dampen a soft cloth with solvent and wring
the spray pattern.
out the excess. Point the gun down and
• Use a compatible solvent.
wipe off the outside of the gun.
1. Flush, page 10. 9. After cleaning the gun, lubricate the follow-
ing parts with lubricant 111265 daily:
2. Remove air cap. Trigger gun, remove noz-
zle, and soak both in a compatible solution. • fluid control valve threads
• trigger pivot pin
NOTICE • fluid needle shaft
Trigger the gun whenever you tighten or
remove the nozzle. This keeps the needle tip
away from the nozzle seating surface and Compliant Cleaning Methods
prevents the tip from being damaged. 1. Place spray gun in a gun washer that com-
pletely encloses gun and components
3. Dip the end of a soft-bristle brush into a during cleaning, rinsing, and draining.
compatible solvent. Do not continuously
soak the brush's bristles with solvent and 2. Spray solvent through the spray gun into a
do not use a wire brush. closed gun cleaning station.

4. With the gun pointed down, clean the front

of the gun, using a soft-bristle brush and
solvent.

5. Scrub the air cap retaining ring, air cap,

and fluid nozzle with the soft-bristle brush.
• To clean out air cap holes, use a soft
implement, such as a toothpick, to
avoid damaging critical surfaces.
• Clean the air cap and fluid nozzle daily,
minimum. Some applications require
more frequent cleaning.
• Do not soak the air cap retaining ring in
solvent for prolonged periods of time.

312414U 11
Troubleshooting

Troubleshooting

Problem Cause Solution

Spray Pattern Normal pattern. No action necessary.

Right
Spray Pattern Dirty or damaged air cap or Rotate air cap (13) 180°.
fluid nozzle.
If pattern follows air cap, prob-
lem is in air cap. Clean and
inspect. If pattern is not cor-
rected, replace air cap.
Wrong
Heavy top If pattern does not follow the
or bottom air cap, the problem is with the
fluid nozzle (11). Clean and
inspect the nozzle. If the pat-
tern is not corrected, replace
nozzle.
Spray Pattern Pressure too high for viscosity Reduce air pressure and
of material being sprayed. increase material viscosity.

Correct pattern by narrowing

fan size with the fluid control
Wrong valve (8).

Split pattern
Spray Pattern Dirty or distorted air horn Clean and inspect air cap (13).
holes. If pattern is not corrected,
replace air cap.

Wrong

12 312414U
 Troubleshooting

Problem Cause Solution

Gun spitting. Air getting into paint stream. Check if fluid source is empty
and fill.

Tighten fluid nozzle (11).

Check and tighten needle

packing nut (9a).

Check fluid nozzle (11) for

damage.
Will not spray. Fluid control valve (8) turned Adjust fluid control valve (8)
too far clockwise. counterclockwise.
Fluid source empty. Refill.
Excessive air blowing back. Loose fluid nozzle (11). Tighten fluid nozzle (11).
Damaged fluid nozzle seal Replace seal (19).
(19).
Excessive air leak behind Worn u-cups/air valve. Repair gun (Kit 289407). Be
trigger. sure to use all included parts.
Worn trigger. Replace trigger (part 289140).
If leak persists repair gun (Kit
289407).
Gun fluid pressure is too high Using needle/nozzle kit with Use needle/nozzle kit with
with gun triggered (cannot too small orifice. larger orifice.
achieve desired flow rate).
Using a low fluid pressure set- Using needle/nozzle kit with Use needle/nozzle kit with
ting, the fluid flow is too high, too large orifice. smaller orifice.
making it necessary to restrict
needle travel to reduce fluid
flow.
Fluid system will not operate atThere is no fluid regulator, or Add low pressure fluid regula-
low enough pressure [below air regulator is not sensitive tor, or add more sensitive low
10 psi (70 kPa, 0.7 bar)]. enough at low pressure. pressure air regulator.
Fluid flow is fluttering while Fluid filter clogged. Check fluid filter.
spraying. Fluid source empty. Refill.
Fluid flow fades while spraying Air hose size is too restricted Use 5/16 in. (7.9 mm) I.D. air
high viscosity fluids. for higher air flow being used. hose if the hose is 25 ft (7.6 m)
long. If longer hose is needed,
use a 3/8 in. (9.5 mm) I.D.
hose.

312414U 13
Repair

Repair

Follow Pressure Relief Procedure, page 9.

See Parts, page 16, for callout references.

Disassembly
1. Unscrew retaining ring (14) to remove air 6. Remove trigger nut (22), trigger pin (21),
cap (13b). Check o-rings (13a and 13c) wave washer (18), and trigger (10).
and replace if necessary.
7. Unscrew needle packing nut (17) and
2. Trigger gun while unscrewing nozzle (11) remove u-cup packing (16) and
to prevent needle damage. spreader (15).

3. Check o-ring (19) and replace if necessary. 8. Remove air control valve assembly (5).
Inspect and replace as necessary.
4. Remove fluid control valve (8), spring (26),
needle (9), and nut (7). Inspect. Replace 9. Remove air inlet valve assembly (27) [36
tip (9c), needle (9), and u-cup seal (20) as on Models 24U187 and 24U188]. Inspect
necessary. If replacing needle tip, use low and replace as necessary.
strength thread adhesive on needle tip
threads. NOTE: Do not remove the fluid inlet fitting. It
was attached to the gun body with permanent
5. Remove spring (28) and push the air valve thread locker. There is also no need to remove
assembly (6) out the back of the gun. the air inlet fitting.
Inspect. Replace air valve assembly (6)
and u-cup seal (20) as necessary. Use
tool (33) to install u-cup seal.

14 312414U
 Repair

Reassembly
1. Install air control valve assembly (5) with 4. Install wave washer (18) with cupped side
valve turned fully counterclockwise to out- toward the gun body. Lubricate and apply
ermost position. Torque to 85-90 in-lb thread retainer to trigger pin (10). Install
(9.6-10.2 N•m). trigger (10), trigger pin (21), and trigger
nut (22). Torque to 15-20 in-lb
2. Install air inlet valve assembly (27 [36 on (1.7-2.3 N•m).
Models 24U187 and 24U188]) with valve
turned fully counterclockwise to outermost 5. Install air valve assembly (6), spring (28),
position. Torque to 205-215 in-lb and nut (7). Torque to 175-185 in-lb
(23.2-24.3 N•m). (19.8-20.9 N•m).
3. Lubricate u-cup spreader (15) and u-cup 6. Install needle (9) and spring (26). Lightly
packing (16). Install spreader (15) with lubricate and install fluid control valve (8).
tapered end facing rear of gun. Install
u-cup packing (16) with open end facing 7. Trigger gun while replacing nozzle (11).
front of gun. Install packing nut (17). Torque to 155-165 in-lb (17.5-18.6 N•m).
Torque to 3 in-lb (0.3 N•m). 8. Install air cap assembly (13) and retaining
ring (14).

ti11226a

17 16 15

312414U 15
Parts

Parts
8 3 78 20 3 28 3 56 10 6 20 3
1
18 3
21 3 4

19
11 9 1

13b
3 26 13c
9a
9b
4 9c 2
3 4 7 22
12 17

2 3 16 3 11 5
2 3 15

11
11 23 10 13a 14

11 10 27 36 11
ti11194a
1 Pull trigger before installing nozzle (11).
2 Insert spreader (15) with tapered end facing rear of gun.
Insert u-cup (16) with open end facing front of gun.
3 Apply lubricant.
4 Apply low strength thread retainer.
5 Apply high-strength thread retainer.
6 Torque to 85-90 in-lbs (9.6-10.2 N•m).
7 Torque to 15-20 in-lbs (1.7-2.2 N•m).
8 Torque to 175-185 in-lbs (19.8-20.9 N•m).
9 Torque to 155-165 in-lbs (17.5-18.6 N•m).
10 Install with valve assembly turned fully
counterclockwise to outermost position.
11 Torque to 205-215 in-lbs (23.2-24.3 N•m).
12 Torque to 3 in-lbs (0.3 N•m).

16 312414U
 Parts

Ref. Part Description Qty. 21 --- PIN, pivot 1

22 --- PIN, pivot, nut 1
1 289016 BODY, gun 1
23 289451 FITTING, air inlet 1
2‡ --- GASKET, fluid inlet 1
26* --- SPRING, compression 1
3‡ --- FITTING, fluid inlet 1
27** 289142 VALVE, assembly, 1
5 289796 VALVE, air control 1 air inlet
assembly
28* --- SPRING, compression 1
6* 289038 VALVE, air, assembly 1
7* 289052 NUT, air valve, u-cup 1 29 289794 TOOL, gun 1
assembly 33* --- TOOL, installation, 1
8 289097 VALVE, fluid control 1 seal
9 see NEEDLE, assembly 1 36 289452 NUT, air plug 1
p. 20-22 (includes 9a-9c) (not assembled)
9a --- NUT, needle 1  Included in Gun Repair Kit 289399.
9b --- NEEDLE 1
 Included in Trigger Repair Kit 289143
9c see TIP, needle 1
p. 20-22 (contains 5 of each part).
10 289140 TRIGGER, gun 1 + Included in Needle Packing Repair Kit
11 see NOZZLE, fluid, 1 289455 (contains 5 of each part).
p. 20-22 pressure feed
* Included in Air Valve Repair Kit 289407.
13 see AIR CAP, assembly 1
p. 20-22 (includes 13a-13c)  Included in Air Cap Seal Kit 289791
13a --- WASHER 1 (contains 5 of each part).
13b --- O-RING 1
 Included in Retaining Ring Kit 289079.
13c see AIR CAP 1
p. 20-22  Included in Gun Body Kit 289016.
14 --- RING, retaining 1 ‡ Included in Fluid Inlet Fitting Kit 24C269.
15+ --- SPREADER, u-cup 1
16+ --- PACKING, u-cup 1 ** Not included in Models 24U187 and
24U188.
17 289793 NUT 1
18 --- WASHER, wave 1 --- Not sold separately.
19 111457 PACKING, o-ring 1
20* --- PACKING, u-cup, gun 2

312414U 17
Parts

18 312414U
 Accessories

Accessories
Repair Kits Test Gauges
Part No. Description Part No. Description
289455 Needle Packing Repair Kit 289803 HVLP Automotive Verification
289399 Gun Repair Kit 289563 HVLP General Metal 0.5 - 1.8 mm
289791 Air Cap Seal Kit (0.020-0.070 in.) Verification
289143 Trigger Repair Kit 289564 HVLP General Metal 2.2 mm
289407 Air Valve Repair Kit (0.086 in.) Verification
289079 Retaining Ring Kit 289565 HVLP General Metal 2.8 mm
24C269 Fluid Inlet Fitting Kit (0.110 in.) Verification
26A102 Fluid Inlet Fitting with Flats Kit 289566 HVLP Stain Verification
24C310 Nozzle O-Ring Kit, 5-pack 289567 HVLP Waterborne Verification
289016 Gun Body Kit 289568 HVLP High Wear 1.5 mm
288986 Gun without needle, nozzle, or air (0.059 in.) Verification
cap, with 3/8 npsm (R3/8-19) fluid 289569 HVLP High Wear 1.8-2.2 mm
inlet (0.070-0.086 in.) Verification
195065 Steel Air Inlet Fitting
Hoses
Air Valves and Regulators
Part No. Description
Part No. Description
239636 15 ft Air Hose Assembly (5/16 in.)
234784 Air Control Valve with Gauge
239637 25 ft Air Hose Assembly (5/16 in.)
235119 Gun Air Regulator Assembly
239655 Swivel Air Valve 239622 4 ft Fluid Whip Hose Assembly
(3/16 in.)
Cups 239633 15 ft Fluid Hose Assembly
(3/16 in.)
Part No. Description
239634 25 ft Fluid Hose Assembly
239802 1 qt SST Pressure Cup with
(3/16 in.)
Single Air Regulator
239803 1 qt SST Pressure Cup with
Double Air Regulator
Tips
239804 1 qt SST Pressure Cup with Part No. Description
Remote Air Regulator 24E484 .030 in. SST Needle Tips
240266 Disposable Polyethylene Cup (Pack of 5)
Liners (40 pack), for 1 qt siphon
and pressure cups only
235117 2 qt Pressure Cup with
Caps
Regulator and Hose Part No. Description
18F117 Fluid Cap (non-adjustable)
Cleaning Kits
Part No. Description
105749 Cleaning Brush
111265 Gun Lubricant
15C161 Ultimate Gun Cleaning Kit

312414U 19
Repair Kits

Repair Kits

Nozzle Needle Needle/ Needle Tip

Nozzle Size Air Cap Kit Kit Assembly Kit Nozzle Kit Kit
Model Spray Type in. (mm) (13a-13c) (11, 19) (9a-9c) (9a-9c, 11, 19) (9c, 5-pack)
General Metal Spray Guns
288726 Conventional 0.020 (0.5) 289773 289061 289270 289458 289350
288929 Conventional 0.030 (0.8) 289773 289062 289271 289459 288183
288930 Conventional 0.042 (1.1) 289773 289063 289785 289460 288184
288931 Conventional 0.055 (1.4) 289773 289064 289799 289462 288185
288932 Conventional 0.070 (1.8) 289784 289065 289799 289464 288185
288933 Conventional 0.086 (2.2) 289068 289066 289787 289466 289004
288934 Conventional 0.110 (2.8) 289069 289067 289800 289467 289007
288935 HVLP 0.020 (0.5) 289041 289061 289270 289458 289350
288936 HVLP 0.030 (0.8) 289041 289062 289271 289459 288183
288937 HVLP 0.042 (1.1) 289041 289063 289785 289460 288184
288938 HVLP 0.055 (1.4) 289041 289064 289799 289462 288185
288939 HVLP 0.070 (1.8) 289041 289065 289799 289464 288185
288940 HVLP 0.086 (2.2) 289070 289066 289787 289466 289004
288941 HVLP 0.110 (2.8) 289043 289067 289800 289467 289007
288942 Compliant 0.020 (0.5) 289042 289061 289270 289458 289350
288943 Compliant 0.030 (0.8) 289042 289062 289271 289459 288183
288944 Compliant 0.042 (1.1) 289042 289063 289785 289460 288184
288945 Compliant 0.055 (1.4) 289042 289064 289799 289462 288185
288946 Compliant 0.070 (1.8) 289042 289065 289799 289464 288185
288947 Compliant 0.086 (2.2) 289044 289066 289787 289466 289004
288948 Compliant 0.110 (2.8) 289045 289067 289800 289467 289007
General Metal with Stainless Steel Tip
288949 Conventional 0.042 (1.1) 289773 289063 289272 289461 289010
288950 Conventional 0.055 (1.4) 289773 289064 289273 289463 289013
288951 Conventional 0.070 (1.8) 289784 289065 289273 289465 289013
24U187** Conventional 0.042 (1.1) 289040 289063 289272 289461 289010
24U188** Conventional 0.055 (1.4) 289040 289064 289273 289463 289013
288952 HVLP 0.042 (1.1) 289041 289063 289272 289461 289010
288953 HVLP 0.055 (1.4) 289041 289064 289273 289463 289013
288954 HVLP 0.070 (1.8) 289041 289065 289273 289465 289013
288955 Compliant 0.042 (1.1) 289042 289063 289272 289461 289010
288956 Compliant 0.055 (1.4) 289042 289064 289273 289463 289013
288957 Compliant 0.070 (1.8) 289042 289065 289273 289465 289013

** Models 24U187 and 24U188 do not include item 27.

20 312414U
 Repair Kits

Nozzle Needle Needle/ Needle Tip

Nozzle Size Air Cap Kit Kit Assembly Kit Nozzle Kit Kit
Model Spray Type in. (mm) (13a-13c) (11, 19) (9a-9c) (9a-9c, 11, 19) (9c, 5-pack)
Automotive
288929 Conventional 0.030 (0.8) 289773 289062 289271 289459 288183
288930 Conventional 0.042 (1.1) 289773 289063 289785 289460 288184
24D472* Conventional 0.042 (1.1) 289040 289063 289785 289460 288184
288931 Conventional 0.055 (1.4) 289773 289064 289799 289462 288185
289034 HVLP 0.040 (1.0) 289771 289774 289785 289468 288184
289035 HVLP 0.047 (1.2) 289771 289775 289799 289469 288185
289541 HVLP 0.055 (1.4) 289771 289776 289786 289495 289001
289036 Compliant 0.040 (1.0) 289772 289777 289785 289470 288184
289037 Compliant 0.047 (1.2) 289772 289778 289799 289471 288185
289542 Compliant 0.055 (1.4) 289772 289779 289799 289497 288185
* High production
Stain
288958 Conventional 0.020 (0.5) 288862 288907 289270 289472 289350
288959 Conventional 0.030 (0.8) 288862 288927 289271 289473 288183
289109 Conventional 0.040 (1.0) 288862 289112 289785 289474 288184
288960 HVLP 0.020 (0.5) 288864 288907 289270 289472 289350
288961 HVLP 0.030 (0.8) 288864 288927 289271 289473 288183
289110 HVLP 0.040 (1.0) 288864 289112 289785 289474 288184
288962 Compliant 0.020 (0.5) 288863 288907 289270 289472 289350
288963 Compliant 0.030 (0.8) 288863 288927 289271 289473 288183
289111 Compliant 0.040 (1.0) 288863 289112 289785 289474 288184
Adhesives
288982 Conventional 0.051 (1.3) 289051 289077 289799 289484 288185
288983 Conventional 0.070 (1.8) 289051 289078 289799 289485 288185
Spatter
288985 HVLP 0.042 (1.1) 289053 289063 289785 289460 288184
Air Brush
24F202 Conventional 0.042 (1.1) 24D705 289063 289785 289460 288184

312414U 21
California Proposition 65

Nozzle Needle Needle/ Needle Tip

Nozzle Size Air Cap Kit Kit Assembly Kit Nozzle Kit Kit
Model Spray Type in. (mm) (13a-13c) (11, 19) (9a-9c) (9a-9c, 11, 19) (9c, 5-pack)
Waterborne
288964 Conventional 0.030 (0.8) 289046 289071 289785 289475 288184
288965 Conventional 0.042 (1.1) 289046 289072 289785 289476 288184
288966 Conventional 0.055 (1.4) 289046 289073 289799 289477 288185
288967 HVLP 0.030 (0.8) 289047 289071 289785 289475 288184
288968 HVLP 0.042 (1.1) 289047 289072 289785 289476 288184
288969 HVLP 0.055 (1.4) 289047 289073 289799 289477 288185
288970 Compliant 0.030 (0.8) 289048 289071 289785 289475 288184
288971 Compliant 0.042 (1.1) 289048 289072 289785 289476 288184
288972 Compliant 0.055 (1.4) 289048 289073 289799 289477 288185
High Wear
288973 Conventional 0.059 (1.5) 288861 289074 289352 289478 N/A
288974 Conventional 0.070 (1.8) 289049 289075 289352 289479 N/A
288975 Conventional 0.086 (2.2) 289049 289076 289351 289480 N/A
289982 Conventional 0.110 (2.8) 289049 289975 289979 289980 N/A
288976 HVLP 0.059 (1.5) 289115 289331 289352 289481 N/A
288977 HVLP 0.070 (1.8) 289325 289332 289352 289482 N/A
288978 HVLP 0.086 (2.2) 289325 289333 289351 289483 N/A
289983 HVLP 0.110 (2.8) 289325 289976 289979 289981 N/A
288979 Compliant 0.059 (1.5) 289050 289331 289352 289481 N/A
288980 Compliant 0.070 (1.8) 289327 289332 289352 289482 N/A
288981 Compliant 0.086 (2.2) 289327 289333 289351 289483 N/A
289984 Compliant 0.110 (2.8) 289327 289976 289979 289981 N/A

Needle Tips Grooves

Grooves Needle Tip

0 289004, 289007
1 289350
2 288183
ti14043a
3 288184
4 288185

California Proposition 65
CALIFORNIA RESIDENTS

WARNING: Cancer and reproductive harm. – www.P65warnings.ca.gov.

22 312414U
 Technical Data

Technical Data
WW

Maximum Air Inlet Pressure . . . . . . . . . . . . . . . . . . . . . . . . . 100 psi (0.7 MPa, 7 bar)

Maximum Fluid Inlet Pressure . . . . . . . . . . . . . . . . . . . . . . . 300 psi (2.1 MPa, 21 bar)
Maximum HVLP*/Compliant Inbound Air Pressure . . . . . Printed on air cap. See Models, page 3-4.
Fluid and Air Operating Temperature Range . . . . . . . . . . . . 32°-109°F (0°-43°C)
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410 g
Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/4 npsm (R1/4-19)
Fluid Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8 npsm (R3/8-19)
Wetted Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 stainless steel, 17-4 PH stainless steel, PEEK,
acetal, UHMWPE
Noise Data** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conventional
Sound power at 43 psi (0.30 MPa, 3.0 bar) . . . . . . . . 88.82 dB(A)**
Sound Power at 43 psi (0.30 MPa, 3.0 bar) . . . . . . . . 78.91 dB(A)**
HVLP
Sound power at 19 psi (0.13 MPa, 1.3 bar) . . . . . . . . 89.70 dB(A)**
Sound Power at 19 psi (0.13 MPa, 1.3bar) . . . . . . . . 79.79 dB(A)**
Compliant
Sound power at 29 psi (0.20 MPa, 2.0 bar) . . . . . . . . 87.47 dB(A)**
Sound Power at 29 psi (0.20 MPa, 2.0 bar) . . . . . . . . 77.56 dB(A)**

* Produces 10 psi (0.07 MPa, 0.7 bar) spraying pressure at air cap.
** All readings were taken with the fan valve fully open. Sound power was tested to ISO 9614-2.

Air Consumption
Air Inlet Air
Pressure Consumption
Spray Type Application psi (MPa, bar) (scfm)
Conventional Stain 35 (0.24, 2.4) 15.2
HVLP Stain 22 (0.15, 1.5) 14.8
Compliant Stain 29 (0.2, 2.0) 13.6
Conventional Adhesive 21 (0.14, 1.4) 11.3
Conventional General Metal 36 (0.25, 2.5) 12.6
HVLP General Metal 19 (0.13, 1.3) 14.9
Compliant General Metal 29 (0.2, 2.0) 11.7
Conventional High Wear 38 (0.26, 2.6) 17.1
HVLP High Wear 20 (0.14, 1.4) 15.0
Compliant High Wear 29 (0.2, 2.0) 10.7
Conventional Waterborne 36 (0.25, 2.5) 12.6
HVLP Waterborne 20 (0.14, 1.4) 15.0
Compliant Waterborne 23 (0.16, 1.6) 13.1
Conventional Automotive 36 (0.25, 2.5) 12.6
HVLP Automotive 29 (0.2, 2.0) 14.4
Compliant Automotive 35 (0.24, 2.4) 11.2

312414U 23
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
material and workmanship on the date of sale to the 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 equipment determined 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 faulty
installation, 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 equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs
will be made at a reasonable charge, which charges may include the costs 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’s sole obligation and 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, incidental or 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 brought within two (2) years of the 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 their manufacturer. Graco will provide 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 CUSTOMERS
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 procédures concernées.

Graco Information
For the latest information about Graco products, visit www.graco.com.
For patent information, see www.graco.com/patents.
TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.
Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505

All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
2ULJLQDOLQVWUXFWLRQV This manual contains English. MM 312414

Graco Headquarters: Minneapolis

International Offices: Belgium, China, Japan, Korea
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2007, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
www.graco.com
Revision U, April 2021