DIRECT SUPPORT TROUBLESHOOTING PROCEDURES
EXTENDED SERVICE PROGRAM (ESP)
TRUCK, CARGO, 2-1/2-TON, 6X6, M44A3 SERIES TRUCKS (DIESEL)
SECTION I. INTRODUCTION TO TROUBLESHOOTING
Operation of a deadlined vehicle without preliminary inspection
may cause injury to personnel and or damage to equipment.
a. This chapter provides the information needed to diagnose and correct malfunctions of the mechanical
system at the direct support maintenance level.
b. The troubleshooting procedures in this chapter cannot give all of the answers or correct all vehicle
malfunctions encountered. However, these procedures are a step-by-step approach to a problem that directs
tests and inspections toward the source of a problem and a successful solution.
c. 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.
d Before taking any corrective action for a possible malfunction, the following rules should be followed:
(1) Question operator to obtain any additional information that might help you to determine the cause of
(2) Never overlook the chance the problem could be of simple origin. The problem could require only a
(3) Use all senses to observe and locate troubles.
(4) Use test instruments or gauges 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
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