TM 5-3825-270-23&P
FIELD MAINTENANCE
EXCESSIVE ENGINE VIBRATION
INITIAL SETUP:
References (cont.)
Tools and Special Tools
Engine Misfires (WP 0011)
Tool Kit, General Mechanic's: Automotive
Front Engine Mount Bracket Replacement
(WP 0225, Table 1, Item 12)
Open/Close Engine Access Cover (TM
References
5-3825-270-10)
Alternator Belt Adjustment (WP 0079)
Rear Engine Mount Bracket And Bushing
Water Pump And Housing Replacement
Replacement (WP 0135)
Water Distributor Operator Manual (TM
Water Fan Replacement (WP 0072)
5-3825-270-10)
Engine Compartment Cover Replacement
Engine Crankshaft Shaft Front Seal Replacement
Equipment Condition
Engine OFF. (TM 5-3825-270-10)
Engine Surges (WP 0010)
TROUBLESHOOTING PROCEDURE
EXCESSIVE ENGINE VIBRATION
STEP 1
Does engine surge or misfire?
1.
Remove front and rear engine access covers. (TM 5-3825-270-10)
2.
Start engine. (TM 5-3825-270-10)
3.
Monitor engine performance for surges and misfires.
4.
Do not shutdown engine if engine does not surge or misfire.
CONDITION/INDICATION
Does engine surge or misfire?
DECISION
No - Go to step 2. (Step 2 - Is alternator belt tight and free of damage?)
Yes - If engine surges, go to Engine Surges (WP 0010), or if engine misfires, go to Engine Misfires.
STEP 2
Is alternator belt tight and free of damage?
WARNING
Stay clear of moving engine components while working in or near engine bay with engine
running. Failure to comply may result in injury or death to personnel.
1.
Shutdown engine. (TM 5-3825-270-10)
2.
Remove engine compartment cover. (WP 0142)
3.
Check alternator belt for excessive play and other damage. (WP 0079)
4.
Start engine. (TM 5-3825-270-10)
5.
With engine running, visually inspect alternator belt for signs of loose fit.
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