Service manual

FUEL INJECTION PUMP
Gear Alignment
Note: Verify model of fuel injection pump before proceeding
1. Rotate the camshaft to the correct angle (aligning keyway to marks) for the model pump being serviced
(Figure 5-50) and hold in position.
2. Look through the charge pump opening in the case and slightly lift the distribution shaft and rotate to
align the distribution shaft gear and camshaft gears marks. Once the marks are aligned, do not raise the
distribution shaft too far or the gears will disengage and misalign.
3. The gears are properly aligned when the gear marks are aligned, the distribution shaft drive lugs are in
parallel alignment with the retainer screws and the camshaft keyway is at proper angle from step
1.
4. While holding the gear alignment, install the distribution shaft retaining plate and tighten screws to
6 - 7 ft-lb. (8 - 10 N-m).
5. Verify proper gear alignment by checking gear timing marks for proper alignment.
Distribution Shaft Angle
Camshaft Angle MP2 - 3 Cyl.
Camshaft Angle MP2 - 4 Cyl.
'.
PI 0003556A
0001207BB W1207B
1. Retaining Plate 3. Housing Timing Marks
2. Distribution Drive Shaft Lugs 4. Camshaft Key
Camshaft Angle MP4
0001 207CC
Figure 5-50
MP Series Service Manual YANMAR,