7
6
8
TM 9-4940-568-34
5-100
5-19. FUEL INJECTION PUMP TIMING (CONT).
NOTE
1 mm of rotation past the timing
mark will advance or retard
(depending on direction of
rotation) the pump timing by 1
degree.
(6)
To verify fuel injection pump (6) is timed
correctly, first check the alignment marks on
the pump flange (7) and gear housing (8).
(7)
Stanadyne DB4 fuel injection pumps all
have a provision for locking the pump shaft
at a position corresponding to
top-dead-center for Cylinder No. 1. New
and reconditioned fuel injection pumps
should be received with the shafts located in
this position.
