SERVICE MANUAL
TIMING, GEAR TRAIN & FRONT COVER
Section 7
2.
Insert the end of the indicator between any two
teeth of the gear to be measured.
3.
Move the gear by hand, slightly, then read dial
indicator to determine backlash.
NOTE: Backlash between any set of timing gears
should not exceed 0.41 mm (0.016 in.). Any gear
exceeding this value requires service.
Remove the Idler Gear as follows:
1.
Remove the retainer bolt (1, Fig. 12), stub shaft
(2) and bearing (3). A split ring prevents the
bearing from coming off the stub shaft.
2.
Remove the idler gear (4, Fig. 1 2), bearing (5)
and spacer (6) as shown.
Figure 12. - Removing Idler Gear
1.
Retainer bolt
4.
Idler gear
2.
Stub shaft
5.
Bearing
3.
Bearing
6.
Spacer
If necessary, remove the Injection Pump Drive Gear as
follows:
With Crankcase front cover off (Refer to Figures 13 and
13a)
1.
Remove the three drive gear bolts (1).
2.
Remove the pump drive gear (2) from the dowel
as shown
Figure 13. - Removing Injection Pump Gear Engines
equipped w/UTDS (formerly AMBAC) Model 100 Fuel
Injection Pump (with front cover off)
1.
Drive gear bolts (3)
2.
Injection pump drive gear
Figure 13a. - Removing Injection Pump Gear (Engines
equipped w/Robert Bosch Model MW Fuel Injection
Pump) [with front cover off])
1.
Drive gear bolts (3)
2.
Injection pump drive gear
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
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