TM 55-2815-574-24
0010
ENGINE LACKS POWER - Continued
MALFUNCTION
The engine is not getting enough air.
CORRECTIVE ACTION
1.
Check air inlet collector for visible red air restriction indicator band. Repair air inlet collectors
2.
Perform operational check of diesel engine (TM 55-1925-205-10).
3.
Check that air flapper valve is open. If it is not, open it (TM 55-1925-205-10).
4.
Perform operational check of diesel engine (TM 55-1925-205-10).
5.
Check blower air intake for obstructions. Repair air inlet housing (WP 0103).
6.
Perform operational check of diesel engine (TM 55-1925-205-10).
7.
Remove air box covers and inspect cylinder liner ports. Clean ports if they are over 50 percent
plugged (TM 55-1925-205-10).
8.
Perform operational check of diesel engine (TM 55-1925-205-10).
MALFUNCTION
High return fuel temperature.
CORRECTIVE ACTION
1.
Perform fuel spill-back temperature test (WP 0023).
2.
Perform operational check of diesel engine (TM 55-1925-205-10).
MALFUNCTION
High ambient air temperature.
CORRECTIVE ACTION
1.
Check ambient air temperature. Once air temperature is above 90F (32C), there is a 2 percent
loss of horsepower for every 20F degree increase in fuel temperature.
2.
Perform operational check of diesel engine (TM 55-1925-205-10).
MALFUNCTION
Blower bypass valve is stuck open.
CORRECTIVE ACTION
1.
Check blower bypass valve to determine if it is stuck open. Inspect for scoring of valve piston or
piston guide. Replace valve assembly if any of above conditions are noted (WP 0108).
2.
Perform operational check of diesel engine (TM 55-1925-205-10).
END OF WORK PACKAGE
0010-2