GMC C Series 1993, Repair Manual

Page: 127 / 264

5H-22 AIR BRAKE VALVES
2. O-ring (21) and seals (22) in exhaust plate (figure :
26). ..............
3. Diaphragm (23).
4. Exhaust plate (24).
N O T IC E : S e e “N o tic e ” o n p a g e 5 H -1 .
5. Screws (27) and washers (28). , .
6. Shuttle (20) in guide (19).
7. Guide (19).
8. O-ring (18) oh PCD cap (17).
9. PCD cap (17).
10. Valve disc (12).
11. Spring (.13).
12. Snap ring (14). ^ ;
13. O-ring (15) on cap (16).
14. SLS cap (16).
j
15. Shuttle (10) in guide (9). ,
16. Guide (9).
17. O-ring (8) on cap (7).
18. TC cap (7). .
19. Valve spring (6).
20. O-rings (3 and 5) on plunger (4).
21. Plunger (4).
22. O-ring (2) on TP cap (1).
23. TP cap .(1).
22. O-Rings
23. ; Diaphragm
B5942
} > ; ■ , -
,
■
Figure 26—Installing the Seals
TRAILER BRAKE HAND CONTROL VALVES
BENDIX TC-2
Remove or Disconnect (Figure 27)
1. Pin (44).
2. Handle (42).
3. O-ring (43).
4. Head (45).
5. Seal (46).
6. Lock ring (47).
7. Screws (62).
.
8. Cover (49), .
9. Gasket (50).
10. Lever cam (51).
11. Spring (52).
12. Piston (53).
13. O-ring (54).
14. Spring (55).
15. Valve (56).
16. Spring retainer (57).
17. Spring (58).
18. Stem (60).
19. Valve (61). •
Clean
• Gasket material from the body and cover surfaces,
• All parts in mineral spirits or another solvent. .
Inspect
Piston iapd piston bore for scoring and corrosion.
Install or Connect (Figure 27)
• Use'bnly new seals arid valves from the repair kit.
1. Lubricate piston, valve bores, and seals with Delco
Silicone Lube (GM P/N 18010909 or equivalent).
2. Valve (61) on stem (60).
3. Stem (60) in supply port.
• Insert a bolt into the supply port to hold the,valve:
on its seat.
4. Spring (58).
5. Spring retainer (57).
6. Valve (56).
7. Spring (55).
8. O-ring (54) on piston (53).
9. Piston (53).
10. Spring (52).
11. Lever cam (51).
12. Gasket.
13. Cov^r (49).
N O T IC E : S e e “N o tic e ” o n p a g e 5 H -1 .
14. Screws (62). .