TM 5-6115-465-12
TO 35C2-3-446-1
NAVFAC P-8-625-12
TM 06858B/06859D-12
Troubleshooting (Cont)
Table 3-2.
CORRECTIVE ACTION
PROBABLE CAUSE
MALFUNCTION
g. Low fuel level in day tank.
3. Engine starts
g. Check main tank fuel level. Check
transfer pumps for proper operation.
correctly, but
stops when
Replace if necessary (para. 3-78).
START-RUN-
Check fuel solenoid valve for proper
STOP switch iS
operation. Replace if defective
released.
(continued)
level and low fuel cut-off switch for
proper operation. Replace if neces-
sary (para. 3-74).
4. Engine stops
a. Protective device tripped.
a. Check fault indicator for malfunction
suddenly
indication. Refer to the appropriate
maintenance section.
b. Service fuel tank (para. 3-49).
b . Fuel supply exhausted.
c. Bleed fuel system (para. 3-25, 3-26,
c. Air lock in fuel supply line.
3-49). Tighten any loose fuel line
connections (para. 3-83).
d. Obstruction in fuel supply line.
d. Clean or replace fuel supply line
e. Water in fuel.
e. Drain main fuel tank (para. 3-49),
fuel filters (para. 3-43, 3-46) and
day tank (para. 3-25). Service fuel
system with clean fuel (para. 3-49).
a. Improper grade or contaminated
5. Engine rune
a. Drain entire system. Service with
erratically or
fuel.
clean fuel of proper grade (para. 3-49)
misfires.
Service fuel filters (para. 3-26 and
3-43).
b. Dirty air cleaner.
b. Service air cleaner (para. 3-24).
c. Obstruction in fuel supply line.
c. Clean or replace fuel supply line
d. Valves out of adjustment.
d. Adjust valve tappet clearance (para.
e. Dirty nozzles.
e. Clean and replace defective nozzles.
6. Engine does not
a. One or more cylinders mis-
a. Refer to malfunction 5 of this table.
develop full
firing.
power
b. Clean or replace exhaust pipe or
stricted.
muffler (para. 3-102).
7. Engine knocks.
a. Engine overheated.
a. Refer to malfunction 11 of this table.
b. Low lube oil level.
b. Check oil level. Add oil if necessary.
(Lubrication Order, para. 3-3.)
c. Valve tappet clearance too
c. Adjust valve tappet clearance (para.
great.
d. Injector nozzle broken.
d. Replace injector nozzle (para. 3-82).
3-20
