Engine Maintenance
105
Injection Pump Timing
Use this timing procedure when installing a new
injection pump. It is not necessary to use this
timing procedure when removing and reinstalling
the original injection pump. In that case, align the
index marks on the injection pump and the gear
case as they were before removing the injection
pump.
1. Before removing the old injection pump, note
the alignment of the index marks on the
injection pump and the gear case. The index
mark on the injection pump is usually aligned
with the index mark on the gear case. If not,
make a mark on gear case in line with the
index mark on the injection pump (see Figure
71).
2. Clean the area with brake cleaner or
something similar. Place an injection angle
sticker on the gear case so the center line on
the sticker is aligned with the index mark on
the injection pump. An injection angle sticker
is provided with the new injection pump.
1. Index Marks
Figure 69: Index Mark Location
1. Index Mark on Injection Pump
2. Index Mark on Gear Case
Figure 70: Index Mark Alignment
1
1
2
1. Index Mark on Injection Pump
2. Existing Index Mark on Gear Case
3. Make New Mark on Gear Case If Needed
Figure 71: Marking Gear Case
1. Index Mark on Injection Pump
2. Injection Angle Sticker
Figure 72: Place Injection
Angle Sticker on Gear Case
1. –1.0 Degrees Mark
2. Center Line (0 Degrees Mark)
3. +1.0 Degrees Mark
Figure 73: Injection Angle Sticker
1
2
3
1
2
1
3
2
0.5 Degrees
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