TM 5-3805-258-24-1
S Y S T E M S
O P E R A T I O N
A I R S Y S T E M A N D B R A K E S
BRAKE SYSTEM
(Models 950BNSCE and BSCE)
18. Junction block on rear
axle.
19. Drain valve.
20. Air compressor
governor.
21. Air compressor.
22. Air/hydraulic cylinder for
rear brakes.
23. Fluid reservoir for rear
brakes.
24. Brake fluid pressure
indicator.
25. Brake fluid pressure
(overstroke) switches for
wheel brakes (Normally
Closed).
1. Line to EMS warning
signals.
2. Air pressure switch for
wheel brakes (Normally
Open).
3. Control valve for
secondary and parking
brake.
4. Line to transmission
neutralizer group.
5. Ah pressure switch for
parking brake (Normally
Open).
6. Line from compressor
to air dryer.
7. Unloader line.
8. Air reservoir.
9. Air horns (two).
10. Air horn valve (foot
operated).
11. Brake control valve for
left pedal.
12. Left pedal.
13. Line to transmission
neutralizer valve.
14. Brake chamber for
secondary and parking
brake.
15. Secondary and parking
brake.
16. Quick release valve.
17. Junction block on front
axle.
26. Air/hydraulic cylinder for
front brakes.
27. Fluid reservoir for front
brakes.
28. Brake air pressure
indicator.
29. Brake control valve for
right pedal.
30. Right pedal.
31. Air pressure switch for
stop lights (Normally
Open).
32. Double check valve.
33. Orifice check valve.
34. Wheel brakas (four).
35. Air dryar.
All of the wheel brakes in the brake system are cali-
per/disc brakes. There are brakes at all four wheels
(wheel brakes) and one separate brake (secondary and
parking brake) on the front drive shaft. Secondary and
parking brake (15) is a shoe-type brake. It is activated
by brake chamber (14) which is activated by springs
and released by air. Wheel brakes (34) are activated by
brake fluid but the brake fluid is activated by air.
The wheel brakes are controlled by two pedals in the
operators station. When right pedal (30) is pushed,
only the wheel brakes are activated. When left pedal
(12) is pushed, the transmission is first disengaged (not
engaged) and then, the wheel brakes are activated. Full
engine power can be used in the hydraulic system when
the transmission is disengaged. When left pedal (12) is
released, the transmission engages before the wheel
3-70.1/3-70.2 (blank)