TM 5-3805-280-24-2
Fuel System Operation and Tests
115
ADJUST ROTARY INJECTION PUMP DYNAMIC
22
TIMING:
1. Loosen injection pump mounting flange nuts and adjust
pump timing.
To advance pump timing, rotate top of pump clockwise
view from rear (flywheel end) of engine. To retard
timing, rotate top of pump counterclockwise. Pump
flange movement of 1.524 mm (0.060 in.) is equivalent
to 2 degrees of engine timing.
2. Tighten injection pump mounting flange nuts to
A--Front Plate Timing Mark
specifications.
B--Pump Timing Mark
Rotary Injection Pump Mounting Nuts--Specification
Torque ............................................................................. 27 Nm (20 lb-ft)
Start engine and check injection pump dynamic timing
again. Adjust timing as needed.
3. Grind away original timing mark and stamp new timing
mark (B) onto injection pump flange to align with timing
mark (A) on front plate after all final adjustments have
been made and satisfactory engine performance is
achieved.
RG,115,JW7711
1924NOV979/9
13-549
