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TM 10-4320-311-14
Table 5-1. Direct Support Troubleshooting Chart - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3.
DROP IN ENGINE ROTATION SPEED
Step 1. Check exhaust smoke color Check abnormal operating sound.
Fuel system maintenance. (Refer to para 5-13 and 5-14.)
4.
BLUISH-WHITE EXHAUST SMOKE
Step 1. Check engine rotation.
Uneven rotation. (Refer to para 5-13 and 5-14.)
5.
PUMP DOES NOT PUMP
Step 1. Check pump for leaks between engine and pump casing (Refer to para 4-7.)
Replace shaft seal.
(Refer to para 5-10.)
Section IV. DIRECT SUPPORT MAINTENANCE PROCEDURES
INDEX
Para
Page
5-8
Direct support maintenance procedures ........................................................................
5-4
5-9
General instructions ......................................................................................................
5-4
5-10
Replace/inspect impeller, wear plate, shaft seal, and shaft adapter ...............................
5-5
5-11
Replace/inspect/repair pump casing ..............................................................................
5-8
5-12
Replace/inspect diesel engine .......................................................................................
5-10
5-13
Replace/test fuel injection nozzle ..................................................................................
5-12
5-14
Replace/inspect/test/adjust fuel injection pump .............................................................
5-15
5-15
Replace/inspect frame assembly, base plate, and shock mounts...................................
5-20
5-8. Direct Support Maintenance Procedures. Maintenance procedures at direct support maintenance level include
as necessary removal, cleaning and inspection, repair or replacement, and installation.
5-9. General Instructions. Unless the procedure requires special resources or tools, more than one maintenance
person, or specific equipment conditions, these are not listed for each maintenance procedure. They are listed only for
those procedures that require them.
5-4
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