Graco 309550U important safety instructions Piston Safety Lock, Air Valve

Piston Safety Lock

1. Follow Pressure Relief Procedure, page 15.

2. Disconnect air (D) and remove fluid manifold (M).

M

D

TI2554A

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).

Repair

Air Valve

1. Follow Pressure Relief Procedure, page 15.

2. Disconnect air (D) and remove fluid manifold (M).

M

D

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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).

24 30 4

28	14	5
		TI2433A

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.

31 2 32

24

TI2434A

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.

309550U 33