EM-46
ENGINE MECHANICAL Timing Gears
INSPECTION OF TIMING GEARS
1. INSPECT IDLER GEAR
(a) Using a cylinder gauge, measure the inside diameter
of the idler gear.
Idler gear inside diameter: 45.000-45.025 mm
(1.7717-1.7726 in.)
(b) Using a micrometer, measure the diameter of the idler
gear shaft.
Idler gear shaft diameter: 44.950-44.975 mm
(1.7697-1.7707 in.)
(c) Subtract the idler gear shaft diameter measurement
from the idler gear inside diameter measurement.
Standard oil clearance: 0.025-0.075 mm
(0.0010-0.0030 in.)
Maximum oil clearance: 0.20 mm (0.0079 in.)
If the clearance is greater than maximum, replace the gear
and shaft.
2. INSPECT INJECTION PUMP DRIVE GEAR BEARING
Check that bearing is not rough or worn.
3. IF NECESSARY, REPLACE INJECTION PUMP DRIVE
GEAR BEARING
A. Remove bearing
Using SST, remove the bearing.
SST 09950-20017
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