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 Corrective Action
Probable Cause
3. Remove turboeupercharger (table 4-1).
3. Turbosupercharger.
Refer to TM 9-2990-200-34 and overhaul
Install
tur-
turbosupercharger.
bosupercharger (table 4-1).
4. Remove fuel pump (table 4-1). Refer to
4. Fuel pump
TM 9-2910-213-34 and overhaul pump.
Install fuel pump (table 4-1).
b. Use wrench - 5120-793-7895 and turn
engine over by hand. If engine turns hard
and grinding or squealing noiee persists,
disassemble engine (chapter 5) and inspect.
Replace damaged parta. Assemble engine
(chapter 7).
c. New or dry engine must be run at fast idle to
c. Dry valve rocker arm shafts and
get oil up to rocker arm bushing-type
rocker arm bushing-type bearings.
bearings.
d. Adjust cooling fan clearance (fig. 4-88).
d. Cooling fans rubbing housing.
a. Refer to 7, above for corrective action.
a. Some cylinders not firing.
10. Rough or poor idling.
b. Refer to 7c, above, for corrective action.
b. Nozzles not functioning properly.
c. Refer to para 3-7 for corrective action.
c. Air leak in intake manifold system.
d. Fuel injection pump not properly
d. Time fuel injection pump (para 4-4). Also
timed.
refer to TM 9-2910-212-34.
a. Adjust fuel injection pump governor. Refer
a. Fuel injection pump governor
11. Engine surges at all
to TM 9-2910-212-34 for procedure.
improperly adjusted.
speeds.
b. Clean linkage and inspect for binding or
b. Injection pump linkage sticking or
sticking condition. Refer to pertinent vehicle
binding.
Technical Manual, Appendix A. Lubricate
linkage.
a. Engine operating at below normal
a. Refer to 7 and 8, above, for corrective
12. Poor fuel economy.
action. Increase engine operating tem-
temperature.
perature.
b. Operating with improper fuel.
b. Drain fuel tanks and refill with proper fuel.
R e f e r to pertinent vehicle Technical
Manual, Appendix A, for proper fuel.
c. Air intake system restricted.
c. Refer to para 3-7 for corrective action.
d. Exhaust system restricted.
d. Repair exhaust system. Refer to pertinent
vehicle Technical Manual, Appendix A.
Remove engine exhaust manifold (table 5-
exhaust manifolds (table 7-9).
e. Loss of power or low power.
e. Refer to 4, above, for corrective action.
a. Plugged or damaged fuel supply
a. Refer to para 3-8 for corrective action.
13. Engine stops suddenly.
s y s t e m or fuel pump fails to
operate properly.
b. Failed fuel injection pump
b. Replace coupling. Refer to table 4-1 for
coupling.
replacement instructions.
c. Refer to 2g, above, for corrective action.
c . Fuel injection pump fails to
operate properly.
d. Seizure of internal engine com-
d. Disassemble engine (chapter 5) and inspect.
ponents.
Replace damaged parts. Assemble engine
(chapter 7).
a. Fuel cutoff in fuel injection pump
a. Check electrical lead. Refer to 2g, above, for
14. Engine will not stop when
inoperative.
corrective action.
shut off.
b . Binding fuel injection pump
b. Refer to 2g, above, for corrective action.
control linkage.
3-6
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