INTRODUCTION TO TROUBLESHOOTING - TM-9-2320-361-24-10091

TM 9-2320-361-24-1

0004 00

FIELD TROUBLESHOOTING

2-1/2 TON, 6X6, M44A2 SERIES TRUCKS (MULTIFUEL)

INTRODUCTION TO TROUBLESHOOTING

WARNING

Failure to perform a preliminary inspection on a deadlined

vehicle may cause injury to personnel and/or damage to

equipment.

NOTE

If corrective action provided does not correct malfunction,

notify your supervisor.

This chapter provides troubleshooting procedures necessary to diagnose mechanical, compressed air and

brake system, electrical, and Simplified Test Equipment for Internal Combustion Engines

Reprogrammable (STE/ICE-R) malfunctions for M44A2 series vehicles. The troubleshooting procedures

may not correct all vehicle malfunctions encountered. However, the procedures provide a step-by-step

approach that directs tests and inspections toward the source of a problem.

The troubleshooting indexes have their own WP numbers and are used to identify malfunctions and

locate the troubleshooting procedure needed to diagnose the problem.

Each troubleshooting procedure lists a description of the malfunction followed by a step or sequence of

steps to check the operation of a component. Then, in the order of probability, substeps instruct the user

to perform a check, inspection, or test to determine if a condition exists. Each substep includes the

corrective action required to correct the malfunction.

Prior to performing any troubleshooting procedure, observe the following recommendations:

Check the Equipment Inspection and Maintenance Worksheet, DA Form 2404, and Maintenance

Request Form, DA Form 2407, to find out why the equipment has been deadlined. Note the

operator's written description of the problem and, whenever possible, discuss the problem with the

operator. This can save time and effort in diagnosing the problem.

Do not assume the operator's diagnosis is correct, even if it sounds accurate. Always perform the

appropriate troubleshooting procedure(s) to verify the cause of the problem. Performing a

corrective action without proof of a fault wastes time and increases maintenance of the equipment.

First isolate the system where the malfunction occurs, then locate the component and perform the

corrective action in the ordered listed.

Use approved mechanical, electrical, and pneumatic system repair practices provided in the

technical manuals, field manuals, and technical bulletins listed in WP 0465 00 of this manual.

Use approved special tools and test equipment to determine the known parameters for isolating

a fault.

Fill out an Exchange Tag, DA Form 2402, and attach it to component that will be exchanged as a

core and turned in for repair or rebuilding at the field or sustainment maintenance level.

This manual lists the most common malfunctions that may occur. If a malfunction occurs that is not

listed in the Mechanical Systems Troubleshooting Index, WP 0005 00, the Compressed Air and Brake

System Troubleshooting Index, WP 0009 00, or the Electrical System Troubleshooting Index,

WP 0011 00, notify your supervisor.

END OF WORK PACKAGE

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