Fuel System (Rev 1/97)
95
Align Marks
7. Install the plunger spring and the plunger spring
retainer.
8. Place the lower plunger spring retainer on the plunger.
9. Place the plunger in the fuel control pinion. Make sure
to align the alignment mark on the plunger with the
alignment mark on the fuel control pinion.
Align Marks
10. Place the plunger shims in the plunger guide.
11. Place the plunger guide over the lower plunger spring
retainer.
12. Press the plunger guide into the injection pump body
and compress the plunger spring. If you cannot press
the plunger guide into the injection pump body, move
the fuel control rack back and forth a bit to align the
plunger and the fuel control pinion.
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13. Install the plunger guide stopper by inserting it into the
injection pump body and the slot in the side of the
plunger guide.
14. Release the plunger guide. The plunger spring and the
plunger guide stopper should now hold the plunger
guide in place.
15. After installing the components for each cylinder,
install the plunger guide stopper pin.
16. Torque the delivery valve spring retainers to 29 to 32
ft-lb (39 to 43 mm).
Installation
1. Center the fuel control rack and place the fuel injection
pump in the injection pump housing.
NOTE: Make sure the timing shims are in place.
2. Install and torque the mounting nuts to 18 to 20 ft-lb
(24 to 27 mm).
3. Connect the governor link to the fuel control rack and
install the clip.
4. Install the inspection cover.
Injection Pump Timing
Two different timing procedures are used on these engines.
One procedure times the injection pump to the engine. The
other procedure checks the timing of each individual
cylinder.
If the individual cylinders are not timed correctly to each
other, timing the injection pump to the engine has little
value because some of the cylinders would be out of time.
The individual cylinders are timed to each other by using
shims between the plunger guides and the lower plunger
spring retainers. Because shims are used, it is unusual for
the timing of the individual cylinders to change unless the
injection pump has been repaired. If an engine is running
roughly and all other possible causes have been checked, it
may be worth while to check the individual cylinder timing,