Engine Maintenance
112
Injection Pump Reinstallation
1. Position injection pump shaft into gear,
rotating shaft to mate key with keyway in
gear. Take care to make sure the key mates
with the keyway.
2. Secure injection pump to gear case with
previously removed hardware. Make sure to
align the index marks on the injection pump
and the gear case like they were in step 1 of
“Injection Pump Removal”.
NOTE: If a different injection pump is being
installed, see “Injection Pump Timing” on
page 108 to set the timing.
3. Remove hardware holding gear to tool plate,
then remove tool plate.
4. Secure the gear to the injection pump shaft
with the lock washer and nut. Use a shop rag,
as before, to prevent the lock washer or nut
from falling into the gear case. Torque the nut
to 58 to 65 ft-lb (78 to 88 N•m).
5. Fasten cover plate to gear case and reinstall all
components removed previously to facilitate
injection pump removal.
Fuel Solenoid
The fuel solenoid is located on the end of the
injection pump. It contains two coils: the pull-in
coil, and the hold-in coil. The pull-in coil draws
approximately 35 to 45 amps at 12 volts. The
hold-in coil draws approximately 0.5 amps at
12 volts.
The pull-in coil must be energized to move the
injection pump governor linkage to the fuel on
position. Once the injection pump governor
linkage has been moved to the fuel on position,
the hold-in coil will keep it in fuel on position
until the 8D circuit is de-energized. The pull-in
coil must be de-energized after a few seconds to
keep it from being damaged. The pull-in coil is
controlled by the microprocessor through the fuel
solenoid pull in relay (K2).
1.
Injection Pump
5.
Adapter (Tool)
2.
Gear Case
6.
Tool Long Screw (Tool)
3.
Cover Plate
7.
Tool Short Screw (Tool)
4.
Cover Plate Bolt
8.
Tool Plate (Tool)
Figure 185: Injection Pump Gear Tool
1
2
6
3
7
4
5
8
