Graco Inc Paint Sprayer 02017 User Manual

INSTRUCTIONS-PARTS LIST

308–293

This manual contains important

warnings and information.

Rev. G

Supersedes E

and PCN G

READ AND KEEP FOR REFERENCE.

INSTRUCTIONS

Model M-1265, Series B

Optimisert

HVLP Spray Gun

100 psi (0.7 MPa, 7 bar) Maximum Working Fluid Pressure

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

65 psi (444 kPa, 4.4 bar) Maximum Compliant Inbound Air Pressure

U.S. Patent Pending

02017

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

Graco Inc. is registered to I.S. EN ISO 9001

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WARNING

PRESSURIZED EQUIPMENT HAZARD

Spray from the gun, hose leaks or ruptured components can splash fluid in the eyes or on the skin and

cause serious injury

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

Follow the Pressure Relief Procedure on page 13 when: you are instructed to relieve pressure;

stop spraying; clean, check or servicing the equipment; and install or clean fluid nozzles.

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

D Tighten all fluid connections before operating the equipment.

Check the hoses, tubes and couplings daily. Replace worn, damaged or loose parts immediately.

Permanently coupled hoses cannot be repaired; replace the entire hose.

FIRE AND EXPLOSION HAZARD

Poor air ventilation, open flames, or sparks can cause a hazardous condition and result in fire or

explosion and serious injury

Provide fresh air ventilation to avoid the buildup of flammable fumes from solvent or the fluid being

sprayed.

Extinguish all open flames or pilot lights in the spray area.

Electrically disconnect all equipment in the spray area.

Keep the spray area free of debris, including solvent, rags and gasoline.

Do not turn on or off any light switch in the spray area while operating or if fumes are present.

Do not smoke in the spray area.

Do not operate a gasoline engine in the spray area.

TOXIC FLUID HAZARD

Hazardous fluids 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. Read the fluid manufacturer’s warnings.

Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,

state and national guidelines.

Dress appropriately for your application. Wear the appropriate protective clothing, gloves, eyewear

and respirator

308–293

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Selection Charts

TERMS:

Light Fluid:

Medium Fluid:

Heavy Fluid:

Up to 18 seconds with No. 2 Zahn cup (20 centipoise)

19 to 28 seconds with No. 2 Zahn cup (20–64 centipoise)

Greater than 28 seconds with No. 2 Zahn cup (greater than 64 centipoise) --

2.8 Volatile Organic Compounds, High-solid Polyurethanes, Heavy Waterborne Enamels

P/N:

Part number

NOTE: See page 6 for additional tips on selecting the needle/nozzle/air cap set best suited to your application.

CHART 1: GUN ASSEMBLIES, Series B

Standard Gun Assemblies

With standard needle/nozzle/air cap kit

Includes:

Standard

Complete

Standard

Needle/

Nozzle/Air

Cap Kit P/N

Gun Assy

Material Usage

(See TERMS above)

Part No.

Orifice Size

236–013

238–233

0.042” (1.067 mm)

Light to Medium Fluids or Low Fluid Flow

[5–8 oz./min. (0.15–0.24 l/min.)]

236–014

236–015

238–234

238–235

0.055” (1.397 mm)

0.070” (1.778 mm)

Light to Medium Fluids or Medium Fluid

Flow [6–12 oz./min. (0.18–0.36 l/min.)]

Medium to Heavy Fluids or Medium Fluid

Flow [6–12 oz./min. (0.18–0.36 l/min.)]

236–016

238–236

0.086” (2.184 mm)

Heavy Fluids or High Fluid Flow

[10–15 oz./min. (0.3–0.45 l/min.)]

Optional Gun Assemblies – available as “Build to Order”

With optional needle/nozzle/air cap kit

Includes:

Optional

Complete

Optional

Needle/

Gun Assy

Part No.

Nozzle/Air

Cap Kit P/N

Material Usage

(See TERMS above)

Orifice Size

236–020

238–230

238–231

238–232

0.020” (0.508 mm)

Light Fluids or Low Fluid Flow

[3–6 oz./min. (0.09–0.18 l/min.)]

236–021

236–022

0.026” (0.660 mm)

0.030” (0.762 mm)

Light Fluids or Low Fluid Flow

[3–6 oz./min. (0.09–0.18 l/min.)]

Light to Medium Fluids or Low Fluid Flow

[5–8 oz./min. (0.15–0.24 l/min.)]

308–293

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Selection Charts

CHART 1: GUN ASSEMBLIES, Series B (continued)

Optional Non-HVLP Compliant Gun Assemblies

With standard needle and nozzle and optional high pressure air cap

Includes:

Optional

Complete

{ High

Pressure

Air Cap

P/N

Needle

Assy.

P/N

Gun Assy

Nozzle

P/N

Material Usage

(See TERMS on page 4)

Part No.

Orifice Size

236–023

238–217

238–218

276–293

276–294

189–755

0.042” (1.067 mm)

Light to Medium Fluids or Low Fluid Flow

[5–8 oz./min. (0.15–0.24 l/min.)]

236–024

0.055” (1.397 mm)

Light to Medium Fluids or Medium Fluid

Flow [6–12 oz./min. (0.18–0.36 l/min.)]

Maximum recommended torque to install molded fluid nozzle in the spray gun is 35 in-lbs (4 NSm).

See atomizing air pressure chart on page 7.

{

CHART 2: NEEDLE/NOZZLE/AIR CAP KITS

Standard Needle/Nozzle/Air Cap Kits

Includes:

Standard

Needle/

Nozzle/Air

Cap Kit

{ Needle

Assy.

P/N

Nozzle

P/N

Air Cap

P/N

Orifice Size

Part No.

238–233

238–234

238–235

238–217

238–218

238–219

276–293

276–294

276–295

188–754

188–755

0.042” (1.067 mm)

0.055” (1.397 mm)

0.070” (1.778 mm)

238–236

238–220

276–296

188–756

0.086” (2.184 mm)

{

See page 6 for needle assembly replacement tips.

Optional Needle/Nozzle/Air Cap Kits – available as “Build to Order”

Optional

Needle/

Nozzle/Air

Cap Kit

Includes:

{ Needle

Assy.

P/N

Nozzle

P/N

Air Cap

P/N

Part No.

Orifice Size

0.020” (0.508 mm)

0.026” (0.660 mm)

0.030” (0.762 mm)

235–306

235–307

235–308

238–703

276–290

276–291

276–292

188–754

Maximum recommended torque to install molded fluid nozzle in the spray gun is 35 in-lbs (4 NSm).

See page 6 for needle assembly replacement tips.

{

308–293

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Selection Charts

CHART 3: OPTIONAL ORIFICE PURGE

CHART 4: NEEDLE ASSEMBLY

SST NEEDLE {{

REPLACEMENT TIPS

Optional

Stainless Steel

Orifice-Purge

Needle Part No.

Needle Assembly

Part No.

Needle Tip P/N

Orifice Size

238–217

238–218

238–219

238–703

191–016

191–017

191–018

191–564

186–931

186–932

186–933

186–934

0.042” (1.067 mm)

0.055” (1.397 mm)

0.070” (1.778 mm)

0.086” (2.184 mm)

{{ Use these needles to purge fluid out of the nozzle

orifice to prevent plugging of the tip with fast drying

material. A needle shaft assembly (part no.

224–849) must be used with these needles and

replaces the standard one-piece needles.

Selecting the Proper Needle/Nozzle/Air

Cap Set

Selection Problems and Solutions

The High Volume Low Pressure Spray Gun’s needle/

nozzle sets range in size to provide different fluid flow

rates. Chart 1 shows the recommended combinations

based on fluid viscosities and flow rates.

PROBLEM

POSSIBLE

CAUSE

SOLUTION

Fluid pressure is too Using set with

high (greater than

10 psi [70 kPa, 0.7

bar]) with gun trig

gered

Use needle/

nozzle/air cap

set with larger

orifice

too small orifice

As a general guideline, use the fluid nozzle that will

give the required flow with the needle fully triggered at

the lowest fluid pressure.

Using a low pres

sure setting, the

fluid flow is too high,

making it necessary

to restrict needle

travel to reduce fluid

flow.

Using set with

too large orifice

Use needle/

nozzle/air cap

set with small

er orifice

For low flow rates or light viscosity fluid, select the

smaller nozzle sizes.

For high flow rates or high viscosity fluid, select the

larger nozzle sizes.

Using an air cap size that is smaller than the nozzle/

needle size is not recommended.

Fluid system will not There’s no fluid

operate at low

enough fluid pres

sure [below 10 psi

Add low pres

sure fluid regu

lator or add

more sensitive

air regulator on

pressure pot

regulator or air

regulator is not

sensitive

NOTE: To help select the proper needle/nozzle size, a

fluid pressure gauge may be connected temporarily to

the gun fluid inlet to determine the fluid pressure. See

Accessories.

(70 kPa, 0.7 bar)]

enough

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Air Flow and Atomizing Pressure

NOTE: All tests were completed with the pattern adjustment valve fully open.

Air Flow

Atomizing Air Pressure

(inlet pressure versus atomizing pressure)

Models 236–023 & 236–024

All other models

Models 236–023 and 236–024

Model 236–023

Model 236–024

15 25 35 45 55 65 75 85 95

GUN INLET PRESSURE (psi)

Gun Inlet

Pressure

psi (kPa, bar)

Nominal Atomizing Pressure

Atomizing Air Pressure

psi (kPa, bar)

(inlet pressure versus atomizing pressure)

Model 236–023

6 (41, 0.4)

Model 236–024

7 (48, 0.4)

Models 236–013 to 236–016 and

236–020 to 236–028

20 (140, 1.4)

30 (210, 2.1)

40 (280, 2.8)

50 (345, 3.4)

60 (410, 4.1)

70 (480, 4.8)

80 (550, 5.5)

90 (620, 6.2)

100 (700, 7.0)

10 (70, 0.7)

12 (84, 0.8)

16 (1

1, 1.1)

18 (125, 1.2)

24 (168, 1.6)

30 (210, 2.1)

36 (251, 2.5)

42 (294, 2.9)

48 (335, 3.3)

54 (373, 3.7)

21 (147, 1.5)

26 (181, 1.8)

32 (224, 2.2)

38 (265, 2.6)

43 (301, 3.0)

48 (335, 3.3)

15 25 35 45 55 65 75 85 95

GUN INLET PRESSURE (psi)

Gun Inlet Pressure

Nominal Atomizing Pressure

psi (kPa, bar)

15 (104, 1.0)

25 (174, 1.7)

35 (244, 2.4)

45 (312, 3.1)

55 (379, 3.7)

65 (444, 4.4)

75 (514, 5.1)

85 (584, 5.8)

95 (654, 6.5)

1.5 (10.5, 0.1)

3.0 (21.0, 0.2)

4.5 (31.5, 0.3)

6.0 (41.0, 0.4)

8.5 (58.5, 0.6)

10.0 (70.0, 0.7)

13.0 (91.0, 0.9)

15.5 (107.5, 1.1)

18.0 (125.0, 1.2)

308–293

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Typical Installation

NOTE: See the Accessories section for

accessories recommended to install the system.

KEY

Model M-1265 Spray Gun

See page 4 for part numbers.

Fluid Inlet; 3/8 npsm (R3/8–19)

Air Inlet; 1/4 npsm

Air Hose

Recommend 5/16” (7.9 mm) ID hose

Optional 3/8” (9.5 mm) ID hose

Air Shut-off Valve

Air Regulator

Air Filter

Air Supply Line

02018

The M-1265 HVLP Spray Gun

Ventilate the Spray Booth

The Model M-1265 HVLP Spray Gun was designed to

produce the highest quality finish with today’s fluids as

well as the the Low V.O.C. (volatile organic compound)

WARNING

fluids of tomorrow

To prevent hazardous concentrations of

toxic and/or flammable vapors, spray

only in a properly ventilated spray booth.

Do not operate the spray gun unless

ventilation fans are operating.

This spray gun can spray most coatings or finishes

currently being used for automotive refinish, industrial,

aerospace, marine, wood, plastic and architectural

applications, while easily operating from any paint

delivery system, including cups, pressure pots, or

remote pumps for production line operation.

Check and follow all of the National,

State and Local codes regarding air ex

The Model M-1265 HVLP Spray Gun typically utilizes

65 psi (444 kPa, 4.4 bar) inbound air pressure to

produce high quality paint finishes at 10 psi (0.07 bar)

atomizing air pressure.

haust velocity requirements.

Check and follow all local safety and fire codes.

The air regulator must have a minimum air flow

capacity of 30 scfm at 100 psi (0.7 MPa, 7 bar) air

pressure.

NOTE: If the gun’s hanging hook is needed, remove

the gun trigger and replace the gun plate with the

hook, then reinstall the trigger. See the parts drawing,

page 24.

308–293

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Setup

1. Connect the Air Line

2. Connect the Fluid Hose

NOTE:

D Before connecting the fluid line, blow it out with air

and flush it with solvent. Use solvent which is

compatible with the fluid to be sprayed.

D You must install an air pressure regulator (F) on the

gun air line to control air pressure to the gun. See

Fig. 2.

Install a fluid regulator (L) on the fluid line to control

fluid pressure to the gun. See Fig. 4.

If your regulated air source does not have a filter

install an air filter (G) on the air line to ensure a dry

clean air supply to the gun. Dirt and moisture can

ruin the appearance of your finished workpiece.

See Fig. 2.

Filter the fluid line of coarse particles and sediment

to avoid clogging the fluid nozzle and causing

finishing defects.

Use a 5/16 inch (7.9 mm) I.D. air hose to minimize

excessive pressure drop in the hose.

A. Connect the fluid hose (J) to the gun fluid inlet (B)

3/8–18 npsm [R 3/8–19] compound thread.

A. Connect the air hose (D) to the 1/4 npsm gun air

inlet (C).

02052

Fig. 3

02051

Fig. 1

B. Connect the other end of the fluid hose (J) to a

regulated fluid supply line (K).

B. Connect the other end of the air hose (D) to a reg

NOTE: Fig. 4 shows the fluid regulator (L) and

ulated air supply line (H).

fluid shut-off valve (M) on the fluid supply line (K).

NOTE: Fig. 2 shows the filter (G) air regulator (F),

and air shut-off valve (E) on the air supply line.

01990

02054

Fig. 2

Fig. 4

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Setup

3. Flush the Spray Gun.

6. Adjust the Spray Pattern

Before running any paint through the spray gun, flush

the gun out with a solvent that is compatible with the

fluid to be sprayed, using the lowest possible fluid

WARNING

COMPONENT RUPTURE HAZARD

Do not exceed the 100 psi (0.7 MPa,

7 bar) maximum fluid and air pres

sure of this gun. Higher pressures can cause parts

to rupture and result in serious injury

pressure and a grounded metal container

Follow these steps to establish the correct fluid flow

and air flow:

A. Turn the fluid adjustment knob (8) counterclock-

wise until no restriction of the trigger movement is

felt, then turn the knob another half turn. When the

knob is turned far enough, the trigger should be

able to touch the gun handle when the gun is trig

gered.

02053

Fig. 5

WARNING

PRESSURIZED EQUIPMENT HAZARD

o reduce the risk of a serious injury whenever you

are instructed to relieve pressure, follow the Pres-

sure Relief Procedure on page 13.

open

4. Relieve the Pressure.

5. Position the Air Cap

Rotate the air cap as needed to achieve the desired

spray pattern direction. To create a round pattern, turn

the pattern air off by turning the pattern adjustment

knob (13a) fully clockwise. Refer to Fig. 12.

02017

Fig. 7

Vertical Pattern

Horizontal Pattern

02020

Fig.

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Setup

NOTE: A larger fluid nozzle at a reduced fluid pressure

6. Adjust the Spray Pattern (continued)

will maintain the same flow rate, but slow down the

fluid stream (velocity). When air is applied, this allows

the air to act on the fluid longer and improve the atom

ization.

B. Adjust the fluid flow using the fluid pressure

regulator (L) installed in the gun fluid line. Typical

industrial flow rates will vary with regulator pres

sures from 5 to 10 psi (34 to 70 kPa, 0.3 to

0.7 bar).

D. If further fluid flow restriction is needed at the gun,

turn the fluid adjustment knob (8) clockwise to

reduce the volume of fluid output by limiting the

needle travel.

02059

Fig. 8

C. Hold the gun parallel to the floor and adjust the fluid

pressure to yield a 1 to 6 inch (25.4 to 152.4 mm)

straight fluid stream before the stream falls off.

02017

Fig. 11

1–6 in.

(25.4–152.4 mm)

straight fluid stream

CAUTION

Restricting the trigger and fluid needle travel by

continuously spraying with the fluid adjustment knob

closed (turned clockwise), will cause accelerated

abrasive wear on the fluid needle and wear on the

trigger/air valve shaft interface.

02106

Fig. 9

For the best results, use the gun fluid regulator to

adjust the fluid flow or use a different size needle/

nozzle/air cap combination. Refer to page 5.

Fluid

Velocity of Fluid Nozzles

at the Same Flow Rate

NOTE:

If the fluid adjustment knob is turned in all the way

the gun will emit only air

For continuous spraying, turn the fluid adjustment

knob (8) counterclockwise until no restriction of the

trigger movement is felt. When the knob is turned

far enough, the trigger should be able to touch the

gun handle when the gun is triggered. This provides

maximum fluid flow and prevents premature wear

on the fluid nozzle.

0.042

(1.067) (1.397) (1.778)

Orifice Size in inches (mm)

0.055

0.070

0.086

(2.184) (2.794)

0.110

02105

Fig. 10

Continued on the next page.

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Setup

G. Test the spray pattern and atomization while hold

6. Adjust the Spray Pattern (continued)

ing the gun about 6 to 8 inches (150 to 200 mm)

from the test piece.

E. Open the pattern adjustment valve (13a) by turning

it fully counterclockwise for a full fan pattern.

H. The spray pattern may be too wide with the pattern

adjustment knob (13a) turned fully counterclock

13a

wise. Turn the pattern adjustment knob clockwise

until you have the desired pattern size.

NOTE: Turning the pattern adjustment knob fully

clockwise will produce a round pattern.

I. Check the atomization quality again. Increase the

Open

(wider

pattern)

(narrower

pattern*)

gun air supply pressure with the air pressure regu

lator in 5 psi (34 kPa, 0.3 bar) increments until you

obtain the desired atomization.

J. If after increasing the gun air supply pressure the

atomization is still unacceptable, try installing a

larger fluid nozzle size to reduce the fluid velocity

Refer to Fig. 10. Repeat steps 6-E to 6-I until you

obtain the desired atomization.

02017

Fig. 12

F. Using the air pressure regulator (F), set the gun air

supply pressure at 50 psi (345 kPa, 3.4 bar) at the

gun inlet.

CAUTION

rigger the gun whenever you tighten or remove the

nozzle. This keeps the needle seat away from the

nozzle seating surface and prevents the seat from

being scratched.

If available, use the fluid manufacturer’s recom-

mendations to set the air line pressure for a high

volume, low pressure, spray gun application.

NOTE: Local laws may limit the maximum pres

sure to 10 psi (70 kPa, 0.7 bar) at the air cap for

HVLP compliance.

When tightening the nozzle, do not exceed 35 in-lbs

(4 NSm) torque. Over-tightening the nozzle can cause

the nozzle hex to round, can affect the spray pattern,

and is unnecessary to guarantee a seal.

01997

Fig. 13

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Operation

Pressure Relief Procedure

Applying the Fluid

When using the HVLP spray gun, instead of a conven

tional air spray 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 produced by lower HVLP air pressures, along

with a larger fluid particle size because there is less air

WARNING

PRESSURIZED EQUIPMENT HAZARD

The system pressure must be manually relieved to

prevent the system from starting or spraying acci

dentally. To reduce the risk of an injury from acci

dental spray from the gun, splashing fluid, or

moving parts, follow the Pressure Relief Proce

dure whenever you:

to blow off solvents than what is produced by conven

tional air spray. Take care to avoid runs or sags as you

spray.

are instructed to relieve the pressure,

stop spraying,

1. To achieve the best results when applying fluid,

keep the gun perpendicular to the surface and

maintain a consistent distance of approximately 6

to 8 inches (150 to 200 mm) from the object being

sprayed. See Fig. 14.

check or service any of the system equipment,

or install or clean the spray nozzle.

1. Turn off the air and fluid supply to the gun.

2. To obtain an even finish, use smooth, even strokes

across the object being sprayed with 50% overlap.

2. Trigger the gun into a grounded metal waste

container to relieve air and fluid pressure.

3. Paint using parallel strokes. This spray gun applies

all coatings evenly without cross coating.

NOTE: To eliminate the need to shut off the air pres

sure at the air supply, install a quick-disconnect at the

gun inlet fitting. See Accessories.

WRONG

RIGHT

0793

Fig. 14

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Daily Gun Care, Flushing, and Cleaning

WARNING

CAUTION

PRESSURIZED EQUIPMENT HAZARD

Clean all parts with a non-conductive solvent, com

patible with the fluid being sprayed. Conductive

solvents can cause the gun to malfunction.

To reduce the risk of a serious injury whenever you

are instructed to relieve pressure, follow the Pres-

sure Relief Procedure on page 13.

Methylene chloride with formic or propionic acid is

not recommended as a flushing or cleaning solvent

with this gun as it will damage nylon components.

CAUTION

Solvent left in gun air passages could result in a poor quality paint finish. Do not use any cleaning method which

may allow solvent into the gun air passages.

Do not point the gun up while cleaning it.

Do not wipe the gun with a cloth soaked in

solvent; ring out the excess.

02027

Do not use metal tools to clean the air cap

holes as this may scratch them; scratches can

distort the spray pattern.

02056

Do not immerse the gun in solvent.

02057

02055

General System Maintenance

1. Relieve the pressure.

4. Flush the gun before changing colors and when

ever you are done operating the gun.

2. Clean the fluid and air line filters daily

3. Check for any fluid leakage from the gun and fluid

hoses. Tighten fittings or replace equipment as

needed.

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Daily Gun Care, Flushing, and Cleaning

4. Point the gun down into a grounded metal con

WARNING

PRESSURIZED EQUIPMENT HAZARD

o reduce the risk of a serious injury whenever you

tainer, and flush the gun with solvent until all traces

of paint are removed from the gun passages.

are instructed to relieve pressure, follow the Pres-

sure Relief Procedure on page 13.

1. Relieve the pressure.

2. Disconnect the fluid supply hose (J) from the gun;

do not disconnect the air supply hose.

02053

Fig. 3

5. Turn off the solvent supply

6. Relieve the pressure. Disconnect the solvent

supply.

7. Disconnect both the solvent (N) and air (D) supply

hoses from the gun.

02052

Fig. 1

3. Connect the solvent supply hose (N) to the gun.

02051

02052

Fig. 2

Fig. 4

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Daily Gun Care, Flushing, and Cleaning

8. Remove the air cap ring (12) and air cap (19).

12. With the gun pointed down, clean the front of the

gun, using the soft-bristle brush and solvent.

9. Trigger the gun while you remove the fluid nozzle

(20) from the gun with the gun wrench (35).

12, 19

02060A

Fig. 5

02062A

CAUTION

Fig. 7

rigger the gun whenever you tighten or remove the

13. Scrub the the air cap 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

nozzle. This keeps the needle seat away from the

nozzle seating surface and prevents the seat from

being scratched.

cap and fluid nozzle daily, minimum. Some appli

cations require more frequent cleaning.

10. Soak the ring, air cap, and fluid nozzle in solvent.

11. Dip the end of a soft-bristle brush into a compatible

solvent. Do not continuously soak the brush’

bristles with solvent and do not use a wire brush.

02007

02011

Fig. 6

Fig. 8

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Daily Gun Care, Flushing, and Cleaning

14. Trigger the gun while you install the fluid nozzle

(20) with the gun wrench (35).

17. After cleaning the gun, lubricate the following parts

with lubricant 1 1–265 daily:

CAUTION

When tightening the nozzle, do not exceed 35 in-lbs

(4 NSm) torque. Over-tightening the nozzle can

cause the nozzle hex to round, can affect the spray

pattern, and is unnecessary to guarantee a seal.

Fluid adjustment knob threads

Trigger pivot pin

Fluid needle shaft; refer to the Service section

to remove and reinstall the needle

15. Install the air cap ring (12) and air cap (19).

NOTE: See Accessories to order lubricant 111–265.

12, 19

Lubricate

02060A

Fig. 9

16. Dampen a soft cloth with solvent and wring-out the

excess. Point the gun down and wipe off the

outside of the gun.

Lubricate

02019

Fig. 11

02063

Fig. 10

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Troubleshooting

WARNING

PRESSURIZED EQUIPMENT HAZARD

o reduce the risk of a serious injury, follow the

Pressure Relief Procedure on page 13 before

checking or repairing any part of the gun or sys

tem.

PROBLEM

CAUSE

SOLUTION

Fluid flow is fluttering while spraying 1. Fluid nozzle not tight enough

1. Tighten fluid nozzle; Do not

exceed 35 in-lbs (4 NSm) torque.

2. Fluid filter clogged

2. Check fluid filter

3. Fluid adjustment knob not

properly set

3. Turn the fluid adjustment knob

out for less feathering or use a

larger size nozzle.

4. Baffle (item 11) installed wrong

or damaged

4. Check if baffle protrusion is

properly inserted into gun insert

hole; see page 24. Replace

baffle if damaged.

Fluid flow fades while spraying high 1. Air hose size is too restricted for 1. Use larger 3/8 in. (9.5 mm) ID

viscosity fluids

higher air flows

air hose, part no. 185–353. See

Accessories.

2. Fluid pressure too low, causing

fluid flow to reduce when gun is

elevated

2. Raise fluid pressure at source or

use a smaller fluid nozzle.

No round pattern control

Baffle (item 11) installed wrong or

damaged

Check if baffle protrusion is properly

inserted into gun insert hole; see

page 24. Replace baffle if damaged.

Pattern becomes off-set or heavy

on ends

1. Fluid nozzle is over-tightened

1. Do not exceed 35 in-lbs (4 NSm)

torque on nozzle. Replace

nozzle if damaged.

2. Air cap too tight

2. Loosen air cap retaining ring.

3. Air cap horn holes plugged

3. Clean air cap horn holes with

non-metallic item such as a

toothpick.

Fluid system will not operate at low

There’s no fluid regulator, or air reg- Add low pressure fluid regulator, or

enough fluid pressure [below 10 psi ulator on pressure pot is not sensi

(70, kPa, 0.7 bar)] tive enough at low pressures

add more sensitive air regulator on

pressure pot.

308–293

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Notes

308–293

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Service

Items Needed for Service

D Gun

Wrench – provided

Seal Installation Tool – provided

Adjustable Wrench

12, 19

Screw Driver

Lubricant part no. 111–265; see Accessories to

order

Compatible Solvent

NOTE:

Gun Repair Kit 236–007 is available. The kit in

cludes the air valve assembly (14), ring packing

(22) u-cup seals (32, 33), and packing assembly

02060A

Fig. 1

(39). See page 25 to order

The following procedure covers the replacement of

all the parts included in the Gun Repair Kit.

4. Remove the fluid adjustment knob (8) and fluid

spring (16). See Fig. 5.

The Optional M-1265 Spray Gun (part no. 236–020

to 236–022, 236–027 and 236–028) have a two

piece needle assembly, which includes a SST

needle shaft assembly and a SST needle tip,

instead of the one-piece needle shown in the

following instructions. See Chart 2 on page 5 for

part numbers.

5. Pull the fluid needle (21) out the back of the gun.

6. Remove the trigger (3).

7. Remove the fluid adjustment nut (6), spring (15),

and air valve (14).

WARNING

PRESSURIZED EQUIPMENT HAZARD

8. To remove the packing adjustment screw (31),

insert a thin-blade screw driver (A) through the

back of the gun and into the packing adjustment

screw (31) as shown in Fig. 2. Be careful not to

nick or damage parts with the tool.

To reduce the risk of a serious injury, follow the

Pressure Relief Procedure on page 13 before

checking or repairing any part of the gun or sys

tem.

Disassembly

1. Relieve the pressure.

2. Remove the air cap retaining ring (12) and air cap

(19).

3. Trigger the gun while you remove the fluid nozzle

(20) with the gun wrench (35). See Fig. 1.

CAUTION

Trigger the gun whenever you tighten or remove the

nozzle. This keeps the needle seat away from the

nozzle seating surface and prevents the seat from

being scratched.

02110

Fig. 2

308–293

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Service

11. Clean the parts. Check the fluid needle (21) for

damage or excessive wear. Replace if necessary

CAUTION

Do not use excessive force to push out the packing

assembly (39) or the u-cup seal (33) as this may

bend the fluid needle (21). Refer to Fig. 3 and 4. If

packings are difficult to remove, use a 3/16 in. plastic

rod to push them out.

12. Check the baffle (11) for damage. If it is damaged,

carefully pry it off with a screwdriver and replace it.

13. Lightly lubricate the parts indicated in Fig. 5 with

lubricant 111–265.

9. Push the three piece packing assembly (39) out

toward the back of the gun, with the threaded end

of the fluid needle, as shown in Fig. 3.

02109A

Fig. 3

Lightly lubricate

Lightly lubricate threads

10. Use the threaded end of the fluid needle (21) to

push out the u-cup seal (33) as shown in Fig. 4.

orque to 35–40 in-lbs (3.9–4.5 NSm)

Be sure the baffle protrusion is properly inserted into

the gun insert hole before tightening the nozzle

02103A

Fig. 5

02022A

Fig. 4

308–293

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Service

4. Place the new u-cup seal (33) on the seal installa

Assembly

tion tool (42) with the u-cup lips facing the tool as

shown in Fig. 8.

1. Insert the fluid needle (21) through the front of the

gun as shown in Fig. 6. Install the new packing

assembly (39) by placing them on the end of the

needle tip. Orientate the packings as shown in

Fig. 6.

5. Push the packing (33) into the gun until a definite

snap is felt.

Washer

U-cup; lips face

down

U-cup lips face the tool

Spreader

02023

02024

Fig. 8

Fig. 6

2. Place the packing adjustment screw (31) over the

packing assembly and start the threads into the

gun. Then remove the needle.

6. Place the new air valve assembly (14) on the fluid

needle (21), against the nut (B). See Fig. 9. This

helps align the entrance of the air valve stem into

the inside diameter of the u-cup seal (33) without

damaging the seal lip.

3. Insert a thin-blade screw driver (A) through the

back of the gun and into the packing adjustment

screw (31) as shown in Fig. 7. Be careful not to

nick or damage parts with the tool. Turn the screw

with the screw driver (about 3 turns); the packing

will still be loose.

7. Install the fluid needle (21) and the air valve

assembly (14) into the back of the gun.

02108

02110

Fig. 9

Fig. 7

308–293

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Service

8. Tighten the packing adjustment screw (31) with the

16. Trigger the gun to test the needle movement. If the

gun wrench (35), as shown in Fig. 10, until you can

feel a slight drag on the fluid needle. Do not over-

tighten the screw as this may bind the needle

movement.

needle does not return after the trigger is released

or is slow in returning, loosen the packing adjust

ment screw (31) with the gun wrench (35) until the

needle returns freely. See Fig. 10.

17. Trigger the gun while you install the fluid nozzle

(20) with the gun wrench (35).

CAUTION

When tightening the nozzle, do not exceed 40 in-lbs

(4.5 NSm) torque. Over-tightening the nozzle can

cause the nozzle hex to round, can affect the spray

pattern, and is unnecessary to guarantee a seal.

02104A

Fig. 10

18. Install the air cap ring (12) and air cap (19).

19. Make sure the gun fluid packing assembly is

9. Install the trigger (3). Torque the screw (5) to

10–15 in-lbs (1.1–1.7 NSm). See Fig. 12.

sealing properly by spraying solvent at low pres

sure before fully pressurizing the gun with the fluid

to be sprayed.

10. Remove the u-cup seal (32) from the fluid adjustment

nut (6). See Fig. 11. Be careful not to damage the

seal surface or the nut’s internal threads.

If the fluid packing leaks, tighten the packing

adjustment screw (31) slightly and retest until the

11. Install the new u-cup seal (32) with the seal instal

lation tool (42); the u-cup lips must face toward the

tool as shown in Fig. 11. This will help apply even

pressure to the u-cup lips and avoid damaging

them.

packing seals completely

12. Push the u-cup seal (32) into the fluid adjustment

nut (6) until a definite snap is felt.

13. Install the new packing ring (22).

U-cup lips face

the tool

Lightly lubricate

Lightly lubricate threads

02021

Fig. 11

Torque to 35–40 in-lbs (3.9–4.5 NSm)

14. Install the spring (15) and fluid adjustment nut (6).

Be sure the baffle protrusion is properly inserted into

the gun insert hole before tightening the nozzle

orque the nut to 25–35 in-lbs (2.8–4.0 NSm). See

Fig. 12.

Torque to 25–35 in-lb (2.8–4.0 NSm)

02103A

Torque to 10–15 in-lb (1.1–1.7 NSm)

15. Install the spring (16) and fluid adjustment knob (8).

Fig. 12

308–293

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Parts Drawing

Needle set for

optional guns

13dn

13b

Ref No. 13

Includes items 13a–13d

13cn

13a

33*

39*

14*

Needle for

standard guns

31n

32*

22*

02025A

Lightly lubricate

U-cup lips face air valve (14)

U-cup lips face spring (16)

Lightly lubricate threads

Torque to 25–35 in-lbs (2.8–4.0 NSm)

Optional gun hook to replace plate (34)

Be sure the baffle protrusion is properly inserted into the gun

insert hole before tightening the nozzle

Torque to 35–40 in-lb (3.9–4.5 NSm)

Torque the screw or any accessory installed in this port to

Torque to 10–15 in-lbs (1.1–1.7 NSm)

4–6 in-lb (0.35–0.53 NSm)

308–293

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Parts List

Part No. 236–013 to 236–016, Series B

M-1265 Standard HVLP Spray Gun

With standard needle, nozzle, and air cap

Includes items 1–42

Part No. 236–023 and 236–024, Series B

M-1265 Optional Non-HVLP Compliant Spray Gun

With standard needle and nozzle and

optional high pressure air cap

Includes items 1–42

Part No. 236–020 to 236–028, Series B

M-1265 Optional HVLP Spray Gun

With optional needle, nozzle, and air cap

Includes items 1–42

Ref

No.

Part No. Description

Qty

No.

Part No. Description

Qty

236–004 GUN BODY

275–852 HOOK, gun

185–761 TRIGGER, two-finger

185–746 PIN, pivot; 10-24 UNC-2B

203–953 SCREW, lock; No. 10–24 UNC-2A

x 0.375 in.

188–490 NUT, fluid adjustment

185–745 KNOB, fluid adjustment

275–851 BAFFLE, pattern

276–278 RETAINING RING, air cap

236–006 PATTERN ADJUSTMENT VALVE

ASSY.; Includes items 13a–13d

188–492 SVALVE, pattern adjustment

188–700 SNUT, air adjustment

33*

188–493 SEAL, u-cup; UHMWPE

275–853 PLATE, gun

188–666 WRENCH, gun

39*

236–008

PACKING ASSY.; includes

u-cup spreader, u-cup seal

and packing washer

276–268

TOOL, seal installation

These parts are included in Repair Kit 236–007

which may be purchased separately

Keep these spare parts and the Repair Kit on hand

to reduce down time.

13a

13b

See selection charts for your gun model on pages

4 and 6 to order air caps, fluid nozzles, and fluid

needles.

13cn 187–699 SO-RING, split; PTFE

13dn 105–456 SRETAINING RING

14*

19.

20.

21.

22*

236–009 AIR VALVE ASSY

111–291 SPRING, compression

110–402 SPRING, compression

–

AIR CAP

FLUID NOZZLE

FLUID NEEDLE

Manual Change

Summary

188–694 RING PACKING, PTFE

108–382 PLUG

31n 188–665 SCREW, packing adjustment

Changed the Selection Charts to reflect the Series B

gun parts.

32*

110–453 SEAL, u-cup, nut; UHMWPE

308–293

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Accessories

Cleaning Brush 105–749

For use in cleaning gun

Air Hose Quick-disconnect

Install between gun air inlet fitting and air hose.

208–536

169–970

Coupler, 1/4 npt(f)

Nipple, 1/4 npt(m)

Lubricant 111–265

One 4 oz. (113 gram) tube sanitary (non-silicone)

lubricant for fluid seals and wear areas.

Fluid Hose Assembly 205–142

300 psi (2.1 MPa, 21 bar) Maximum Working Pressure

Nylon with neoprene cover, 0.25 in. (2.4 mm) ID,

3/8 npsm(fbe), 25 ft. (7.6 m) long

Fluid Tube Kit 236–318

Allows air and fluid hoses to be

more easily strapped together

and eases gun movement by

Air Filter and Moisture Separator 106–149

250 psi (1.7 MPa, 17.4 bar) Maximum

Working Pressure

the operator

03405

Removes moisture, oil, and other contami

nants from the compressed air supply

High Pressure Air Cap 189–755

1/2 npt(fbe)

Optimal air cap for use in non-HVLP compliant opera

tions. Water-base compatible

Air Pressure Regulator Kit 210–613

300 psi (2.1 MPa, 20 bar) Maximum

Inlet Pressure

0-125 psi (0–0.87 MPa, 0-8.75 bar)

Regulated Pressure Range

Air Pressure Verification Kit 224–187

For use in checking gun atomizing air pressure at

various supply air pressures. Not to be used for

actual spraying.

To regulate the air pressure to the gun.

0135

Assemble kit as shown in

drawing below. Screw

Includes gauge, air shutoff valve, and

fittings. 1/4 npt(m)

tube connector into gun’

side port. Turn on the air

to the gun, then trigger the

gun and read the resulting air pressure.

Air Shutoff Valve 208–390

500 psi (3.4 MPa, 34 bar) Maximum Working Pressure

o shutoff air supply line. 1/4 npt(m)

NOTE: To be “HVLP compliant”, the atomizing air

pressure must not exceed 10 psi (70 kPa, 0.7 bar).

Gun Air Regulator Assy. 235–119

0–100 psi (0–0.7 MPa, 0–7 bar) air

regulator to control air to gun

SST Fluid Pressure Regulator

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

3–30 psi (21–210 kPa, 0.2–2.1 bar)

Regulated Pressure Range

To regulate the fluid pressure to the gun.

1/4 npt(f) inlet and outlet

236–081

236–449

Regulator without

pressure gauge

Regulator with pressure gauge

01727

Air Hose Assembly 210–867

SST Pressure Cup Kit 235–373

with single air regulator

1 qt. (0.95 liter) capacity, 304 stainless

steel cup. Includes a pressure relief

valve and a single air regulator and

gauge.

100 psi (0.7 MPa, 7 bar) Maximum Working Pressure

25 ft. (7.625 m) long, 5/16 in. (7.94 mm) ID, 1/4

npsm(f) swivel, buna-n

Air Hose Assembly 185–353

100 psi (0.7 MPa, 7 bar) Maximum Working Pressure

Optional air hose for use when higher air flow is

required. 25 ft. (7.625 m) long, 3/8 in. (9.53 mm) ID,

1/4 npsm(f) swivel, buna-n

01725

308–293

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Accessories

Disposable Polyethylene Cup Liners

Paint and solvent resistant. 40 liners per box.

SST Pressure Cup Kit 235–374

with double air regulator

112–490

112–491

1 Quart Cup Size

2 Quart Cup Size

1 qt. (0.95 liter) capacity, 304 stainless

steel cup. Includes a pressure relief

valve, a 0–100 psi (0–0.7 MPa, 0–7

bar) air regulator for gun atomization,

and a 0–15 psi (0–104 kPa, 0–1.0 bar)

air regulator for the 1 qt. pressure cup

2 Quart Pressure Cup 214–627

2 qt. (1.94 liter) capacity, aluminum cup

Includes air pressure regulator and gauge, 4 ft. (1.2 m)

length air and fluid hose with 1/4 npsm(f) swivel ends,

pressure relief valve, and rigid hook handle.

01726

supply air

Gravity Cup Kit 236–038

7.5 oz. (220 cc) capacity, 430 stainless

steel cup, 3/8 npsm(f) fluid inlet

0125

0123

1 Quart Pressure Cup Kit 224–426

1 qt. (0.95 liter) capacity, aluminum cup

Some assembly required. Includes:

Pressure Tank 171–226

2.5 gal (9.5 liter) capacity, aluminum

tank. Includes air pressure regulator

0122

and gauge, pressure relief valve, pick

up tube, and rigid hook handle.

Part No.

224–419

Description

1 Quart Pressure Cup Assy., aluminum

(with check valve)

111–324

111–328

187–169

Female Connector, 1/8 npt x 5/32 tube

Male Connector, 10-32 x 5/32 tube

Tubing, 5/32” OD

Huskyt 307 HVLP Systems

Includes Husky 307 Pump, Pail Cover, Air Regulators,

Suction Tube and Inlet Filter, Fluid Regulator, Fluid

Recirculation Line, and Air and Fluid Hoses

Part No.

Description

224–833

235–659

SST Pail Mount System

Carbon Steel Pail Mount System

0166

1 Quart Remote SST

Pressure Cup 235–054

1 qt. (0.95 liter) capacity, 304

stainless steel cup.

Includes air pressure regulator

and gauge, 4 ft. (1.2 m) length air

and fluid hose with 1/4 npsm(f)

swivel ends, pressure relief valve,

and rigid hook handle.

01962

01526

308–293

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Accessories

Low Pressure SST Pressure Tanks

High Pressure SST Pressure Tanks

For fluid pressures up to 15 psi (104 kPa, 1.0 bar)

For fluid pressures up to100 psi (700 kPa, 7 bar)

ank Size

Low Pressure Tank Low Pressure Tank High Pressure Tank High Pressure Tank

gallons (liters)

P/N

with Agitator P/N

P/N

with Agitator P/N

5 (19)

236–143

236–144

236–145

236–146

236–149

236–150

236–151

236–152

10 (38)

236–147

236–153

15 (57)

236–148

236–154

Low Pressure Tank

High Pressure Tank

with Agitator

03084

03189

Dimensions

Technical Data

6.39 in.