TM 10-4320-310-14
6-9.
REPLACE/ADJUST INJECTION PUMP (Continued)
6
Unscrew delivery valve holder (1) and remove spring (2)
filling piece with three shims (3), copper washer (4),
delivery valve (5) and delivery valve body (6).
7
Insert copper washer (4) and delivery valve body (6) only
into extra fuel device.
8
Thread extra fuel device (1) into injection pump with fuel
pipe (2) on extra fuel device in 3 o'clock position, and then
secure in place.
9
Install dial indicator (3) with adapter pin 1.64-inch (41 mm)
long attached, into extra fuel device (1) and pre-tension
approximately 1 mm (one rotation of dial indicator hand).
10
Remove C-clamp from fuel hose.
NOTE
Fuel emerging from the fuel pipe on extra fuel device must be
bubble free.
11
Move throttle control hand lever to the left past stop.
12
Install hand crank.
Adjustment of Delivery End:
NOTE
The position of TDC (2) and end of delivery (3) is marked on
the flywheel. The corresponding alignment mark (4) is on the
right upper side of the crankcase.
1
Slowly rotate flywheel counterclockwise (when facing flywheel) until no fuel emerges from fuel pipe on extra fuel
device.
2
Continue to very slowly rotate flywheel, while frequently blotting fuel pipe with rag to absorb fuel, until fuel just
begins to weep from fuel pipe.
6-31
