Graco 233777, 233776, 233500, 233501 Service, Air Valve Repair continued, Reassembly, 309303

Service

Air Valve Repair (continued)

Reassembly

1.Lubricate the o-rings (8{) and install them on the carriage (7). Slide the carriage into the center housing (1) so the notch faces out, as shown in Fig. 7.

2.Lubricate each o-ring (10{) and install them on the plugs (9). Insert a plug in each side to secure the carriage (7). Install the retaining rings (11) to hold these parts in place.

3.Install the air valve cup (12{) in the notch of the carriage (7) so the open side faces out.

4.Install two o–rings (43) in the counterbore of the air motor.

5.Lubricate the large o-ring (15{) and the two small o-rings (14{) and install them on the air valve plate (13{). Align the point on the plate with the arrow on the center housing (1) as shown in Fig. 6. Install the plate in the housing.

6.Install the gasket (16{). Note the orientation.

7.Reinstall the air valve cover (17) and screws (36). Torque the screws to 28 in-lb (3.1 NSm).

8.Replace the ball check seals (24{) with the new seals in the kit.

9.Reinstall the felt dampener (29) and side cover (31). See page 14.

2 Lubricate

10{	2	28 in-lb (3.1 NSm)
9	4
	11
1	5 Align. See Fig. 6.
	12{
2 {8	14{ 2
7	15{ 2
2 {8	13{ 5
		16{

29

17	4	31
36

4

39

10{ 2 43

11 9

	ti1044d
Fig. 7

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