INSPECTION AND REPAIR OF BASIC ENGINE
6-10
3. Inspecting and repairing timing gear, camshaft and oil pan
3.1 Inspecting V-pulley
Check the V-belt groove of the pulley for wear. Attach a
new V-belt around a worn pulley, apply a high tension to the
belt, and check whether the top surface of the belt is outside
or inside of the pulley groove to determine the degree of
pulley groove wear.
When the top surface of V-belt is outside the pulley groove,
and the degree of wear is almost the same for every groove
(when pulley has two belt grooves or more), the remaining
service life of the pulley can be considered sufficient.
If the wear appears excessive, and the belt top surface sinks
1.6 mm or more down from the top edge of groove, the
pulley is not reusable. Replace the pulley with a new one.
Inspecting V-belt groove wear
3.2 Inspecting oil seal contact surface
Inspect the oil seal contact surface of the pulley. If the
pulley waers due to oil seal, replace the pulley with new
one.
3.3 Measuring clearance between idler bush-
ing and idler shaft
Measure the inside diameter of the idler bushing and outside
diameter of the idler shaft. Replace the bushing if the
clearance exceeds the limit.
Measuring idler bushing inside diameter and idler shaft
diameter
3.4 Replacing idler bushing
(1)
Use the idler bushing puller to replace idler bushing.
(2) To install the bushing, drive it from the boss side so that
it is flush with the gear boss face.
(3) After installing the bushing, measure the bushing inside
diameter, and if the inside diameter exceeds the
standard, ream the bushing.
Replacing idler bushing
1.6 mm [0.06 in.]
or more
Item Standard Limit
Clearance between idler
bushing and idler shaft
0.025 to 0.075 mm
[0.0010 to 0.0030 in.]
0.100 mm
[0.0039 in.]
Measuring directions
Measuring
points
Idler bushing puller
P/N:30691-51900
Removing Installing
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