ARMY TM 9-2815-257-24
AIR FORCE TO 38G1-128-2
MARINE CORPS TM 10155A/2815-24/3
Section V. UNIT LEVEL TROUBLESHOOTING PROCEDURES
This section contains unit level troubleshooting and tests for the engine assembly. Each malfunction or
trouble symptom is addressed and is followed by a series of inspections or tests necessary to determine the
probable cause and corrective action.
a. This chapter does not list all possible malfunctions that may occur, all tests or inspections that may be
performed, or all corrective actions for each malfunction. Only those checks and tests authorized for the unit
level are covered. If a malfunction is not listed, or is not remedied by corrective actions, notify personnel at a
higher maintenance level.
b. Prior to using troubleshooting table, be sure you have performed all normal operational checks.
c. These troubleshooting procedures assume that electrical wires are undamaged and wiring harnesses
are operable. Conduct continuity checks on suspect wiring / harnesses as required prior to performing
troubleshooting procedures in Table 3-3.
d. Refer to Table 3-2, Malfunction Index, for determining applicable troubleshooting procedure located
in Table 3-3.
Table 3-2. Malfunction Index
Engine will not crank
Engine will not start
Engine starts and stops
Engine output drops
Engine runs rough
Low compression pressure
Engine emits white smoke
Engine emits black smoke