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Page Title:
VEHICLE BRAKES UNEVENLY, BRAKES PULL TO ONE SIDE OR GRAB (Cont) |
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 TM 9-2320-366-20-2
i5. VEHICLE BRAKES UNEVENLY, BRAKES PULL TO ONE SIDE OR GRAB (CONT)
KNOWN INFO
TEST OPTIONS
6.
Air tanks pressurized.
Audible and Visual inspection
Front wheel brake shoes OK.
Is vent hose at affected
REASON FOR QUESTION
Front wheel brake adjustment
wheel brake free from
OK.
obstructions?
If vent hose is plugged, brakes
Front axle quick release valve
will not apply on affected side
OK.
of vehicle.
Air hose to front brake air
chamber OK.
POSSIBLE PROBLEMS
NO
Faulty front brake vent hose.
Faulty front brake air chamber.
Faulty load sensing valve.
Contaminated rear brake
Blow vent hose clear of obstruction
shoes.
YES
or replace damaged vent hose (para
Faulty rear wheel brake
11-21).
adjustment.
Faulty relay valve.
Faulty air hose to rear brake air
chamber.
Faulty rear brake vent hose or
vent valve.
Faulty rear brake air
chamber(s).
Replace front brake air chamber (para 11-7).
KNOWN INFO
TEST OPTIONS
7.
Air tanks pressurized.
Visual inspection
Front wheel brake shoes OK.
Did rear brakes lock up
REASON FOR QUESTION
Front wheel brake adjustment
before front brakes during
OK.
road test?
If rear brakes lock up or grab
Front axle quick release valve
before front brakes on
OK.
unloaded vehicle, load sensing
Air hose to front brake air
valve needs adjustment or is
chamber OK.
faulty.
Front brake vent hose OK.
Front brake air chamber OK.
POSSIBLE PROBLEMS
NO
Faulty load sensing valve.
Contaminated rear brake
shoes.
Faulty rear wheel brake
Adjust or replace load sensing
adjustment.
YES
valve (para 11-10).
Faulty relay valve.
Faulty air line to rear brake air
chamber.
Faulty rear brake vent line or
vent valve.
Faulty rear brake air
chamber(s).
2-1916
Change 1
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