ARMY TM 9-2815-259-24
AIR FORCE TO 38G1-125-2
MARINE CORPS 09249A/09246A-24
3-13
TABLE 3-2. UNIT TROUBLESHOOTING
(Sheet 10 of 11)
ENGINE KNOCKS
Engine knocks.
Check for dirty, defective, or
leaking fuel injection nozzles
(refer to paragraph 3.12.6).
Perform end item troubleshooting
procedures (refer to TM 9-6115-671-14 or
other applicable TM).
Notify next higher level
of maintenance.
Not OK
OK
Not OK
OK
OK
Not OK
Abnormal engine noise.
Check for worn or damaged
water pump bearing
(refer to paragraph 3.8.3).
Replace water pump
(refer to paragraph
3.8.3).
Check for damaged battery
charging alternator
(refer to paragraph 3.9.1).
Repair or replace
battery charging
alternator (refer to
paragraph 3.9.1).
Perform end item troubleshooting
procedures (refer to TM 9-6115-671-14 or
other applicable TM).
Notify next higher level
of maintenance.
ABNORMAL ENGINE NOISE
Notify next higher level
of maintenance.
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