GMC C Series 1993, Repair Manual

Page: 111 / 264

5H-6 AIR BRAKE VALVES
A. Identifying Information
41. Snap Ring
42. O-Ring Retainer
43. O-Ring
Return Spring
Control Inlet Exhaust Valve
Valve Body
47. Piston Return Spring
48. Piston O-Ring
|i;
49. Control Piston ;■
50. Piston O-Ring
51. O-Ring
52. End Plate
53. Bolt
54. Seal Ring
55. Plunger Nut
56. Washer
57. Plunger ValVe
58. Upper Body
59. Plunger Spring
60. Plunger O-Ring
61. Plunger
F4856
Figure 5—Bendix PP-7 Air Supply Valve
7. Plunger nut (55).
8. Control inlet exhaust valve (45).
9. Return spring (44).
10. O-ring (43).
11. Seal retainer (42).
12. Snap ring (41).
13. Piston return spring (47).
14. O-ring (48 and 50) on control piston (49).
15. Control piston (49).
16. O-ring (51).
17. End plate (52).
18. Seal ring (54).
19. Piston valve bodies together.
NOTICE: See “ N otice" on page 5H-1.
20. Washers and bolts (53).
BENDIX PP-8
Remove or Disconnect (Figure 6)
1. Bolts (21) and washers (22).
2. Cover1 (23) and O-ring (27).
3. Nut (24).
4. Washer (25).
5. Valve (26).
6. Plupgeij (29).
7. O-ririg (30).
V J
Q Tighten
• Bolts (53)1 to 4 N-m (35 in. lbs.);
Cleary;:
All metal parts in mineral spirits or another suitable
solvent;
Inspect
• Plunger and valve bore for scoring and burrs.
Replace as needed.