TM 5-6115-545-12
TO 35C2-3-444-1
NAVFAC P-8-626-12
TM 00038G-12
Table 3-3 Troubleshooting (Cont)
MALFUNCTION
1.
3.
Engine runs when START
-RUN-STOP SWITCH is
held in START position
but stops when switch
is set to RUN.
4.
Engine runs errati-
tally or misfires
5.
Engine exhaust
excessively black
6.
Engine exhaust white
or blue.
PROBABLE CAUSE
Contaminated or improper
m.
n.
o.
a.
b.
c.
d.
e.
a.
b.
c.
d.
e.
f.
a.
b.
c.
d.
e.
a.
b.
c.
d.
e.
grade of fuel.
Speed switch not reset
after overspeed shutdown.
Open or defective dead
crank switch.
Closed fuel shutoff lever
(Class I only).
Switch not held in start
position sufficient amount
of time to enable engine to
exceed 600 rpm.
Defective speed switch.
Defective START-RUN-
STOP switch.
Defective oil pressure switch.
High coolant temperature.
Contaminated or improper
fuel.
Air in fuel system.
Restricted fuel fines.
Defective nozzle holder
assembly.
Dirty air cleaner.
Defective turbocharger.
Improper fuel.
Clogged air intake
Defective turbocharger.
Clogged turbo.
Generator set overloaded.
Improper timing.
Improper fuel.
Engine operating temperature
too low due to faulty thermostat.
Oil level too high.
Defective nozzle holder
assembly.
improperly adjusted valves.
CORRECTIVE ACTION
l.
m.
n.
o.
a.
b.
c.
d.
e.
a.
b.
c.
d.
e.
f.
a.
b.
c.
d.
e.
a.
b.
c.
d.
e.
Drain fuel supply, service with proper grade
of fuel (para l-4b).
Reset speed switch by depressing reset button
on back end of switch.
Close switch (49, fig. 3-27) and test for
continuity. Replace if defective.
Open lever for fuel inlet to injection pump.
Hold in start for a longer period (para 2-12).
Replace speed switch (para 3-186).
Replace switch (para 3-119).
Replace oil pressure switch (para 3-194).
Refer to malfunction item 11.
Drain fuel system and fill with proper fuel
(para 1-4).
Bleed fuel lines (pars 3-56).
Clean fuel lines.
Replace nozzle holder assembly (para 3-201).
Service air filters (fig. 3-5).
Replace turbocharger (para 3-203).
Drain fuel system and fill with proper fuel (para 1-4).
Service sir filter assembly (fig. 3-5).
Replace turbocharger (para 3-203).
Reduce load to rated level.
Correct timing.
Drain fuel system and fill with proper fuel (para 1-4).
Replace thermostat (para 3-209).
Drain crankcase until proper level is indicated
on oil level gage (para 3-4).
Replace nozzle holder assembly (para 3-201).
Adjust valves (para 3-220).
3-22 Change 18
