ADJUSTMENT-continued -714670318

TM 5-2420-224-34

BRAKE PRESSURE REGULATOR (ALB VALVE) ADJUSTMENT (CONT)

NOTE

will

movement

Forward

decrease spring tension, which

will drop ALB brake pressure.

movement

will

Backward

increase spring tension, which

will

increase ALB brake

pressure.

D o not apply brake pressure

while adjusting spring.

1 0 . If necessary, a d j u s t ALB rear axle load

pressure to 1352 psi (92 bar) by loosening

and moving control spring mounting bolt (6)

on torque tube (3) forward or backward.

Tolerance of 44 psi (3 bar) is permissible.

11. Tighten mounting bolt (6).

12. If rear axle load pressure is too high and

control spring (1) is at maximum forward

position in elongated hole on torque tube (3),

perform the following:

Loosen two 19 mm bolts (7) on ALB

valve mounting bracket (8) located on

r i g h t side of frame rail behind fuel

tank.

Rotate ALB valve mounting bracket (8)

upward to gain additional adjustment

freeplay.

Tighten two ALB valve bracket

mounting bolts (7).

Adjust rear axle load pressure

according to specifications in step 10,

above.

NOTE

I f adjustment setting cannot be

obtained and gage readings

fluctuate after rechecking, it may

be necessary to bleed brake

system (TM 5-2420-224-20) and

repeat Adjustment steps 6 thru 13.

13. Press brake pedal several times to activate

brake system. Recheck gage reading for

proper pressure setting.

7-9