Graco 3A0732J important safety instructions Repair Air Valve, Disassemble the Air Valve

Repair

Repair Air Valve

Replace Complete Air Valve

1.	Stop the pump. Follow Pressure Relief Procedure,
	page 10.
2.	Disconnect the air line to the motor.
3.	See FIG. 14 on page 23. Remove four screws (211).
	Remove the air valve (214) and gasket (209*◆).

312◆

305◆

309†◆

311◆

ti16284a

4.	To repair the air valve, go to Disassemble the Air
	Valve, page 18. To install a replacement air valve,
	continue with step 5.
5.	Align the new air valve gasket (209*◆) on the mani-
	fold, then attach the air valve (214). Torque screws
	(211) to 95-105 in-lb (11-12 N•m).
6.	Reconnect the air line to the motor.

Replace Seals or Rebuild Air Valve

NOTE: Air Valve Seal Kits are available. See page 35. Parts are marked with an †.

Air Valve Repair Kits are available. See page 35. Parts are marked with an ◆.

Air Valve End Cap Kits are available. See page 35. Parts are marked with an ✠.

Disassemble the Air Valve

1.Perform steps 1-3under Replace Complete Air Valve, page 18.

2.See FIG. 8. Use a 2 mm or 5/64 hex key to remove two screws (309†◆). Remove the valve plate (305◆), cup (312◆), and spring (311◆).

FIG. 8. Air Plate Removal

3.See FIG. 9. Remove the snap ring (310✠) from each end. Use the piston to push the end caps (307✠) out of the ends. Remove end cap o-rings (306†✠◆).

4.Remove the piston (302◆). Remove the u-cup seals (308†◆) from each end and the detent assembly (303◆) and detent cam (304◆) from the center.

18 3A0732J