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Page Title:
TROUBLESHOOTING LUBRICATION SYSTEM |
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 53. TROUBLESHOOTING FUEL SYSTEM - Continued
Corrective action
Probable causes
Malfunction
--.
a
--.
a
Fuel injection pump im-
Refer to TM 9-2910-
4.
Engine exhaust smoke
properly adjusted causing
223-35 and adjust fuel
is excessive and en-
increased fuel delivery
injection pump.
gine runs rough.
(rich mixture).
Sluggish accelera-
tion.
Low oil pressure to fuel
b.
--.
b
Refer to lubrication sys-
injection pump.
tem troubleshooting (par.
pressure to fuel injection
pump.
Failed fuel injection
--.
c
--.
c
Replace fuel injection
pump (par. 63) or turbo-
pump or turbosuper-
supercharge r.
charger.
--
1. Low engine oil
a. Low oil level, faulty oil
a.
Add oil, check pressure
pressure gage, sending
gage as directed in TM
pressure.
9-2320-235-20. Replace
unit, oil diluted, or
faulty oil pressure send-
clogged oil filters.
ing unit (par. 74). Change
oil to grade recommended
in LO 9-2320-235-10.
Replace oil filter elements
Remove oil pressure
b.
--.
b
Defective oil pressure
regulator valve (par.
regulator valve.
and repair (par. 70b).
Install oil pressure reg-
ulator valve (par. 70c).
Obstructed oil pick-up
Remove oil pan (par. 95)
c.
c.
check screens for ob-
tube screens, or ob-
structions or plugged
structed engine oil
condition. Disassemble
passages.
engine (pars. 111 through
151). Clean and inspect
all oil passages. As-
semble engine (pars. 253
through 286).
High engine oil temp-
Refer to cooling system
--.
d
--.
d
ature, defective water
probable causes and cor-
pump, or plugged oil
rective actions tabulated
cooler.
52
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