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  TM 5-6115465-34
TO 35C2-3446-2
NAVFAC P-8-625-34
TM 06858B/06859D-34
TROU8LESHOOTING
Section II.
GENERAL .
2-4.
of corrective actions contains references to
applicable maintenance paragraphs for correction
This section provides information useful in
in the malfunction.
diagnosing and correcting unsatisfactory opera-
NOTE
tion or failure of the generator sets and their
connponents. Malfunctions which may occur are
Refer to the Operator and Organization-
listed in table 2-2. Each malfunction is fol-
al Maintenance Manual for troubleshoot-
lowed by an alphabetical listing of probable
ing information applicable to lower
causes. The corresponding alphabetical listing
levels of maintenance.
Table 2-2.
TROU8LESHOOTING
CORRECTIVE ACTION
PROBABLE CAUSE
MALFUNCTION
a.
Replace defective crank-
a.
1.
Engine fails to
Defective cranking relay
ing relay (para.
K3 (34, figure 5-19).
crank
Replace reverse polarity
b.
b.
Defective reverse polarity
diode (para. 5-llb.).
diode (CR3) (see figure
Repair or replace starter
c.
c. Defective starter solenoid
(7, figure 3-1).
solenoid (para. 3-4).
d.
Repair or replace starter
d. Defective starter motor
assembly (para. 3-4).
e.
Repair or replace starter
e. Defective starter drive
drive assembly (para.
assembly (figure 3-1).
a.
Clean, adjust, repair,
2. Engine cranks,
a.
Defective fuel nozzle
but fails to
assembly (figure 3-23).
or replace fuel nozzle
star t
assembly (para. 3-21).
b.
Repair or replace speed
b.
Defective speed switch
switch (para. 3-6).
c.
Repair or replace fuel
c.
Defective fuel injection
injection pump (para.
pump (figure 3-19).
3-20) .
d.
Check governor (para.
d.
Governor actuator
improperly positioned.
4-7.1, MEP 114A).
3. Engine cranks,
a. Replace relay K1 (para.
a. Defective relay (K1).
but stops when
START-RUN-STOP
b.
Replace relay K2 (para.
switch is
b. Defective relay (K2).
5-10) .
released
c. Replace relay K8 (para.
c.
Defective relay (K8).
NOTE
See Dc schematic diagram
on left engine cover door
for location of relays.
a.
4.
Clean, repair or replace
Engine misses or
a. Dirty or defective fuel
fuel injection nozzle
runs erratically
injection nozzle holder
holders (para. 3-21).
Correct timing, repair,
b.
b.
Fuel injection pump out of
or replace fuel injec-
time or defective (figure
tion pump (para. 3-20).
2-3
Change 5
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