TM 9-2330-381-14
Section II. DIRECT SUPPORT TROUBLESHOOTING
PARA. NO.
TITLE
5-5.
GENERAL
a. This section contains troubleshooting information for DS level maintenance of the semitrailer and its components.
Use these troubleshooting procedures to help locate and correct faults in the equipment. For best results,
perform tests, inspections, and corrective actions in the order listed.
b. Before performing DS level maintenance, verify that unit troubleshooting has been completed and a failed
condition does exist. Further verify that all other indications are normal except for suspected fail condition. Once
a fault has been isolated, repair or replace the failed component.
c. The troubleshooting procedures are grouped by major categories. Become familiar with these major equipment
categories. Use the Symptom Index (para. 5-6) to more easily locate the fault in question.
d. These procedures cannot list all faults that may occur, nor all tests or inspections and corrective actions. If a fault
should occur that is not listed, notify your supervisor.
e. If replacing the suspected faulty component does not correct fault, install the original component and notify your
supervisor.
5-6.
SYMPTOM INDEX
Symptom
Symptom
no.
APU
Engine does not crank over ..........................................................................................................
Engine cranks but does not start ..................................................................................................
Engine runs rough ........................................................................................................................
White or blue exhaust smoke is observed after warmup ................................................................
Insufficient engine output "low power" ...........................................................................................
Fuel mixed into lubricant oil ..........................................................................................................
5-2
