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Page Title:
COMPRESSED AIR AND BRAKE SYSTEM TROUBLESHOOTING INDEX |
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 TM 9-2320-361-24-1
FIELD TROUBLESHOOTING
2-1/2 TON, 6X6, M44A2 SERIES TRUCKS (MULTIFUEL)
COMPRESSED AIR AND BRAKE SYSTEM TROUBLESHOOTING INDEX
MALFUNCTION
TROUBLESHOOTING
NO.
MALFUNCTION
WORK PACKAGE/PAGE
PARKING BRAKE
1.
Parking brake will not hold vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0010 00-2
2.
Parking brake drags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0010 00-2
SERVICE BRAKES
1.
Brake pedal low, soft, or goes to floorboard (weak or no braking) . . . . . . . . . . . . . .
2.
Excessive pedal pressure required to stop vehicle (brake pedal stops
two inches or more above floorboard); no apparent air system failure . . . . . . . . .
3.
Vehicle pulls to right or left when applying brakes . . . . . . . . . . . . . . . . . . . . . . . . . .
4.
Brakes drag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.
Brakes squeal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMPRESSED AIR
1.
No air pressure, or compressed air reads below 60 psi (low air pressure
warning buzzer sounding, indicating air pressure not building up to
normal operating range as indicated by gauge). . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.
Air pressure does not build up to normal operating pressure
(above 85 psi) according to gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.
Air pressure exceeds maximum (gauge reads over 120 psi) and safety
valve opens to release pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.
Low or no reading on air pressure gauge, and warning buzzer shuts off . . . . . . . .
5.
Warning buzzer fails to sound on low pressure (below 60 psi) . . . . . . . . . . . . . . . . .
AIR OPERATED ACCESSORIES
1.
Windshield wipers inoperative or operate slowly (gauge at normal
operating pressure) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0010 00-18
2.
Front wheel drive does not engage (front wheel drive lock-in switch
engaged) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0010 00-20
3.
Air horn does not work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0010 00-22
END OF WORK PACKAGE
0009 00-1/2 blank
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