Справочник Пользователя для Graco Inc. 288046

Check all possible remedies in the troubleshooting 
charts before disassembling the gun.

Some improper patterns are caused by the 
improper balance between air and fluid. Refer to 
Spray Pattern Troubleshooting, page 19.

Fluid leakage through venting holes.

Worn packings or needle.

Replace needle assembly. (14)

Air leakage through venting hole.

Worn o-ring (23) or gasket (15).

Check and replace parts as needed.

Air leakage from back of gun.

Worn o-rings (22, 23).

Replace o-rings.

Air does not trigger.

Piston stem is disconnected from 
main body of piston assembly (20).

Replace piston assembly.

Air does not shut off. 

Piston assembly not seating properly.

Broken return spring (29).

Swollen o-ring (22).

Worn piston stem o-rings (25, 26).

Bottom gasket (16) failed.

Clean/service piston assembly. 
Replace worn or swollen o-rings.

Replace spring.

Replace o-rings.

Replace o-rings.

Replace gasket.

Fluid leakage from front of gun.

Fluid needle (14) dirty, worn, or dam-
aged. 

Dirty or worn diffuser-seat (10).

Clean or replace fluid needle.

Clean or replace diffuser-seat.

To improve sealing while spraying 
lightweight materials and sealing life 
while spraying acid catalyzed materi-
als, use optional SST ball and plastic 
seat.

Fluid is present at air cap holes.

Spray tip is leaking,

Diffuser-seat (10) is insufficiently 
tightened.

Verify that retainer (8) or RAC air cap 
assembly (30), are tight. If so, replace 
spray tip (9).

Tighten diffuser-seat.