TM5-6115-465-12
TO 35C2-3-446-1
NAVFAC P-8-625-12
TM 06858B/06859D-12
Section IX. ORGANIZATIONAL MAINTENANCE OF THE ENGINE FUEL SYSTEM
(3) Wash filter in dry cleaning solvent (Federal
3 - 7 7 . GENERAL.
Specification P-D-680).
This section contains organizational maintenance
(4) Inspect filter for tears or other damage.
instructions for the engine fuel system. Fuel is stored
Replace if defective.
in the main fuel tank located in the generator set skid
base. Two electrically driven pumps which are con-
(5) Position filter in pump body; install gasket,
trolled by the day tank fuel level and low fuel cutoff
and secure with cover.
switch transfer the fuel from the fuel tank to the day
tank. Before entering the day tank, the fuel passes
d. Testing.
through the fuel strainer and primary fuel filter. From
the day tank the fuel passes through the secondary
(1) Disconnect fuel line from fuel solenoid valve
fuel filter to the fuel injection pump. The fuel injec-
tion pump forces the fuel to the injectors in the qdin-
ated container.
der head. Excess fuel is returned to the day tank
through the fuel return line. The entire fuel system is
(2) Disconnect electrical connector from day tank
vented through the main fuel tank filler cap.
fuel level and low fuel utoff switch (paragraph 3-74).
(3) Place START-RUN-STOP switch in RUN
position and BATTLE SHORT switch is ON position (32,
a. Removal.
NOTE
(4) Fuel transfer pump should deliver 3 gallons of
fuel in 10 minutes when operating properly.
Test fuel transfer pumps in accordance
with subparagraph d. below prior to
(5) Replace fuel transfer pump if it fails to operate
removal.
properly.
(1) Disconnect electrical leads at pump.
e. Installation. Install fuel transfer pumps in reverse
order of removal procedures.
(2) Disconnect fuel supply hose (1, figure 3-
17) and remove elbow (2).
(3) Disconnect fuel discharge hose (3) and
a. Removal.
remove elbow (4).
(1) Refer to paragraph 3-26 and drain the fuel
(4) Remove tube assembly (5) and elbows (6
from the strainer and filter housings.
and 7).
(2) Disconnect fuel hoses (1, figure 3-18) and
(5) Remove nuts (8), lockwashers (9), flat washers
remove elbows (2).
( 10) and screws ( 11) to remove fuel transfer pumps (1 2).
(3) Remove cap screws (3) and lockwashers (4)
b. Cleaning and Inspection.
and remove fuel strainer and filter assembly (5) from
mounting bracket (8).
(1) Clean fuel transfer pumps with a clean, lint-
free cloth moistened with an approved solvent (P-D-680).
(4) Do not remove capscrews (6), lockwashers (7),
mounting bracket (8) or gasket (9) unless inspection reveals
(2) Inspect fuel transfer pumps for cracked casing,
damage.
corrosion, stripped threads or other damage.
(5) Refer to paragraph 3-26 and disassemble fuel
c. Service.
stainer and filter assembly.
(1) Remove cover (13, figure 3-17) and gasket
b. Cleaning and Inspection.
(14).
(1) Clean fuel strainer and filter assembly and
(2) Carefully remove filter (15) from pump body
mounting bracket in an approved solvent and dry thor-
(16).
oughly.
Change 17
