Graco TI3840a important safety instructions Piston Safety Lock, Air Valve

Repair

Piston Safety Lock

1. Follow Pressure Relief Procedure, page 18.

2. Flush Gun, page 22.

3. Disconnect air (D) and remove fluid manifold (G).

G

D

TI3837a

4. Unscrew cap (10) from stop (15), using two pair of

channel-lock pliers. Inspect spring (17), safety actuator (3), bushing (4), and o-rings (14, 18).

Air Valve

1. Follow Pressure Relief Procedure, page 18.

2. Flush Gun, page 22.

3. Disconnect air (D) and remove fluid manifold (G).

G

D

TI3837a

4. Unscrew air valve plug (2) and remove spring (26).

Using small screwdriver (54), push spool (27) out from front. Inspect o-rings (24).

14

15

18

3, 4 10

17 TI3835b

26 2

27

24

5. Lubricate o-rings (14, 18) and piston safety lock

actuator (3), and reassemble. Use Fusion Gun Lubricant, page 53. Clean threads with solvent or alcohol. Apply medium-strength Loctitep or equiv- alent to threads on stop (15) and cap (10), and reassemble.

6. Attach fluid manifold. Connect air. Return gun to

service.

TI3834a

5. Liberally lubricate o-rings and reassemble. Use

Fusion Gun Lubricant, page 53. Torque plug (2) to 125-135 in-lb (14-15 N•m).

6. Attach fluid manifold. Connect air. Return gun to

service.

44 309856U