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Page Title:
Excess engine power or engine overspeeds |
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 49. TROUBLESHOOTING ENGINE ASSEMBLY - Continued
Malfunction
Probable causes
Corrective action
4.
Engine low on
Fuel injection pump not
--.
b
b.
Check and adjust fuel
properly timed.
injection pump timing
power - Continued.
Operating with less
Refer to fuel system
c.
c.
troubleshooting (par.
desirable fuel, or fuel
53). Check available
system not clean. Air
in system.
fuel supply.
Replace turbosuper -
Failed turbosupercharger.
d.
d.
charger (par. 62).
Improper functioning fuel
e.
Replace fuel injection
e.
injection pump or advance
pump (par. 63).
unit.
f.
f.
Repair exhaust leaks
Leaking exhaust system
causing reduced pressure
by replacing manifold
to turbosupercharger.
gaskets (par. 88) or
replace exhaust mani-
folds or gaskets (par.
Refer to lubrication
Engine overheated.
g.
g.
system troubleshooting
system troubleshooting
h.
h.
Check cylinder com-
Low cylinder compression.
pression (par. 102)
and take corrective
action. Refer to para-
graph 49, 2b for cor-
rective action.
Adjust fuel injection
a.
Improper fuel injection
Excess engine
a.
5.
power or engine
pump fuel mixture.
pump. Refer to TM
9-2910-223-35 for
overspeeds.
procedures.
b.
Improper fuel injection
Check and adjust fuel
b.
injection pump timing
pump timing.
c.
Improper fuel injection
c.
Reset governor. Refer
pump governor setting.
to TM 9-2910-223-35
for procedures.
Replace fuel injection
Defective fuel injection
d.
d.
pump (par. 63).
pump.
39
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