Piston Safety Lock; Air Valve - Graco 309550Y Instructions - Parts Manual

Piston Safety Lock

1.
Follow Pressure Relief Procedure, page 15.
2.
Disconnect air (D) and remove fluid manifold (M).
M
3.
Unscrew cylinder cap (5). Hold piston stop (28)
with wrench and unscrew from safety lock (4).
Inspect spring (30) and o-rings (14, 24).
28
4.
Liberally lubricate o-rings and reassemble. Clean
threads with solvent or alcohol. Apply
medium-strength Loctite® or equivalent to threads
on stop (28) and reassemble.
5.
Attach fluid manifold. Connect air. Return gun to
service.
309550Y
D
TI2554A
24 30 4
5
14
TI2433A

Air Valve

1.
Follow Pressure Relief Procedure, page 15.
2.
Disconnect air (D) and remove fluid manifold (M).
M
3.
Unscrew air valve plug (2) and remove spring (31).
Using a small diameter tool, push spool (32) out
from front. Inspect o-rings (24).
4.
Liberally lubricate o-rings and reassemble. Torque
plug (2) to 125-135 in-lb (14-15 N•m).
5.
Attach fluid manifold. Connect air. Return gun to
service.
Repair
D
TI2554A
2
31
32
24
TI2434A
33