Piston And Purge Rod - Graco A Series Instructions - Parts Manual

Piston and Purge Rod

1.
Follow Pressure Relief Procedure, page 17.
2.
Flush Gun, page 21.
3.
Disconnect air (D) and remove fluid manifold (G).
G
4.
Disassemble Front End, page 33.
5.
Unscrew purge rod stop (15) and remove safety
lock assembly. Inspect o-rings (14, 18) in place.
18
309856A
D
TI3837a
15
14
TI3847a
6.
Pull purge rod to remove piston (32). Inspect piston
o-ring (16) and shaft o-ring (19).
7.
Inspect purge rod (31) for scratches or damage.
Unscrew rod from piston with nut driver. Inspect
o-ring (18). Liberally lubricate and reassemble.
32 31
19
8.
Liberally lubricate piston o-rings. Reinstall piston.
Shaft is keyed for proper assembly. Push firmly to
seat piston. Rotate piston/purge rod assembly
clockwise with nut driver until piston is fully seated.
Repair
32
16
19
TI3846a
18
16
TI3848a
TI3846a
39