TM
5-3895-376-14&P
5-5. FUEL PUMP MAINTENANCE INSTRUCTIONS
This task includes:
a. Adjust
d. Inspection
b. Remove
e. Installation
c. Cleaning
INITIAL SETUP
Gasket (1)
Tools
Lockwasher, M6 (1)
Tool Kit, General Mechanic's
Lockwasher, M8 (2)
Grinder, Hand Held; item 14, Appx F
Plier, Snap Ring; item 20, Appx F
Equipment Condition
Pan, Wash; item 38, Appx F
Compactor set on level ground in protected area.
Rule, Flexible; item 39, Appx F
Engine off.
Stamp, Numerals (Die Set); item 43, Appx F
General Safety lnstructions
Wrench, Torque; item 50, Appx F
Observe all WARNINGS and CAUTIONS
Materials/Parts
Solvent, Dry Cleaning; item 9, Appx E
Rag, Wiping; item 8, Appx E
6.
Slowly crank the engine in rotation direction and
ADJUST
observe the drip tube. First the fuel flows free,
then drips, stops and starts to drip again. The fuel
NOTE
delivery cut-off point is reached when approxi-
Adjustment of the fuel pump is required
mately 1 drop per second flows out of the drip
when a new gear housing is installed, or
tube. Stop cranking the engine at this point.
the camshaft/camshaft gear has been re-
placed.
7.
Using a flexible rule, measure the distance be-
tween the TDC marks on the flywheel and the en-
Remove the v-belt cover (Para. 4-24).
1.
gine housing. The fuel pump is correctly timed
when the distance measured is 0.827 0.079 in.
Slowly crank the engine in rotation direction until
2.
(21 2 mm).
the top dead center (TDC) mark on the flywheel
is approximately at the 5 o'clock position.
Provide a wash pan for fuel spilled from the fuel
3.
pump and clamp fuel line.
Remove the allen head screw (1) and gasket (2)
4.
from face of fuel pump (3) and install a drip tube.
NOTE
Fuel will flow from the fuel pump (3) as the
screw (1) is loosened.
Set the throttle control lever to full load and en-
5.
sure that the primer is not set.
5-8
