TM 9-2330-388-14
g. If the circular reference mark is before the
notch on the crankshaft support, the injection is too
advanced, so that it is necessary to remove the pump
and add shims (gaskets) between the pump flange and
Figure 7-8. Removing Injection Pump for Shimming
h. If the circular reference mark is after the
notch on the crankshaft support, the injection is too late
Figure 7-9. Pumping Length
and pump shims (gaskets) must be removed.
i.
Each 0.1 mm (0.0039 Inches) shim
thickness moves the pumping beginning point about one
degree on the flywheel.
3.
Pump Length of Stroke Check
a. After noting the pumping start with
accelerator lever in maximum speed position, proceed
as follows: Slowly rotate the flywheel until the fuel begins
to come out again from the pump delivery connector. II
this moment the pumping action ends, and the distance
between the circular mark stamped on the flywheel and
the crankshaft support must be 37 mm or 1.457 in., fig 7-
9.
b. If the circular mark falls before the specified
distance, the fuel delivery is not sufficient. If beyond the
specified distance, the fuel delivery is excessive. Rotate
the eccentric pin to achieve correct specifications fig. 7-
10.
Figure 7-10. Rotating Eccentric Pin
7-4