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 109 of 1207
2-12.
TM 9-2320-361-20
Section IV. MECHANICAL SYSTEMS TROUBLESHOOTING
NOTE
If malfunction corrective action does not correct malfunction, notify
your supervisor.
a.
This section provides information to diagnose and correct malfunctions of mechanical systems.
Because of its complexity, Mechanical Systems Troubleshooting is divided into the following functional
systems:
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Engine (page 2-28)
Exhaust System (page 2-32)
Manifold Heater System (page 2-33)
Cooling System (page 2-34)
Fuel System (page 2-35)
Personnel Hot Water Heater (page 2-35)
Transmission (page 2-35)
Clutch (page 2-36)
Transfer Case (page 2-36)
Propeller Shafts (page 2-37)
Differentials (page 2-37)
Wheels and Tires (page 2-38)
Steering (page 2-39)
Frame and Brackets (page 2-41)
Suspension (page 2-42)
Winch (page 2-42)
Power Takeoff (page 2-43)
Nonelectrical Gages (page 2-44)
Fifth Wheel (page 2-45)
Dump Body (M342A2) (page 2-45)
Earth Boring and Polesetting (M764) (page 2-46)
Outriggers (M764) (page 2-47)
Fuel Tank (M49A2C) (page 2-47)
Water Tank (M50A2 and M50A3) (page 2-49)
Personnel Fuel Burning Heater/Power Plant Heater (page 2-50)
b.
Each malfunction symptom given for an individual component or system is followed by step(s) to
determine the cause and corrective action you must take to remedy the problem.
c.
Before taking any action to correct a possible malfunction, the following rules should be followed:
(1)
Question operator to obtain any information that might help you to determine the cause of
the problem.
(2)
Never overlook the chance that the problem could be of simple origin. The problem could be
corrected with minor adjustment.
(3)
Use all senses to observe and locate troubles.
(4)
Use test instruments or gages to help you to determine and isolate problems.
(5)
Always isolate the system where the malfunction occurs and then locate the defective component.
(6)
Use standard automotive theories and principles when troubleshooting the vehicles covered in
this manual.
d.
Omissions. This manual cannot list all mechanical malfunctions that may occur. If a malfunction
occurs that is not listed in table 2-2, notify your supervisor.
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