TM-9-2320-361-20
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
OCTOBER 1991
TM-9-2320-361-20 - Page 137 of 1207
2-13.
TM 9-2320-361-20
Section V. COMPRESSED AIR AND BRAKE SYSTEM TROUBLESHOOTING
a
This section provides information to diagnose and correct malfunctions of the compressed air and
brake system. Because of its complexity, the compressed air and brake system is divided into the following
functional components:
●
Parking Brake (page 2-54)
●
Service Brakes (page 2-56)
●
Compressed Air (page 2-62)
●
Air-Operated Accessories (page 2-71)
b. The air and brake system schematic (Appendix E) shows interrelationship of these systems, and
should be used as a reference when performing compressed air and brake system troubleshooting.
c. Each malfunction symptom given for an individual component or system is followed by step(s) you
should take to determine the cause and corrective action you must take to remedy the problem.
d. Before taking any action to correct a possible malfunction, the following rules should be followed:
(1)
problem.
(2)
corrected
(3)
(4)
(5)
(6)
this manual.
Question operator to obtain any information that might help you to determine the cause of the
Never overlook the chance that the problem could be of simple origin. The problem could be
with minor adjustment.
Use all senses to observe and locate troubles.
Use test instruments or gages to help you to determine and isolate problems.
Always isolate the system where the malfunction occurs and then locate the defective component.
Use standard automotive theories and principles when troubleshooting the vehicles covered in
WARNIN G
Do not disconnect air lines before draining air reservoirs. Small
parts under pressure may shoot out with high velocity, causing
injury to personnel.
2-52
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