TM-9-2320-285-24-2

TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1

TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

OCTOBER 1985

TM-9-2320-285-24-2 - Page 176 of 698

TM 9-2320-285-24-2

3-24.

BRAKE CONTROLS MAINTENANCE (CONT)

a. Air Control Valve (cont).

KEY

1. Pin

2. Red button

3. Pin

4. Yellow button

5. Plug

6. Locknuts s(4)

7. Valve assembly

8. Screws (4)

9. Screws (4)

10. Cover plate

11. Screws (4)

12. Cover plate

13. Spool assembly

14. Spool assembly

15. Valve spool

16. Shuttle

17. Return spring

18. O-ring

19. O-ring

20. O-ring

21. O-ring

22. Locknuts (4)

23. Washers (8)

24. Identification tag

25. Screws (4)

26. Gasket

STEP

LOCATION

ITEM

ACTION

REMARKS

DISASSEMBLY (cont)

4

d.

Cover plate (12) Remove

(cont

)

e.

Spool assembly

Remove and

(13)

discard

f.

Spool assembly

Remove and

(14)

discard

g.

Valve spool

Remove

Use long nose pliers.

Grasp

(15)

spool webbing, twist, and

pull free

h.

Shuttle (16)

Remove

i.

Return spring

Remove

(17)

3-170