Piston - Graco 309550Y Instructions - Parts Manual

Repair

Piston

1.
Follow Pressure Relief Procedure, page 15.
2.
Disconnect air (D) and remove fluid manifold (M).
M
3.
Remove Front End, page 27.
4.
Unscrew cylinder cap (5) and inspect o-ring (14).
5.
Push piston shaft to remove piston (15). Inspect
piston o-ring (16) and shaft o-ring (17).
32
D
TI2554A
5
14
TI2430A
15
16
17
TI2431A
6.
Liberally lubricate piston o-rings. Reinstall piston.
Shaft is keyed for proper assembly. Push firmly to
seat piston.
7.
Install cylinder cap (5).
8.
Attach Front End, page 28.
9.
Attach fluid manifold. Connect air. Return gun to
service.
TI2432A
5
TI2430A
309550Y