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Chapter 6 INSPECTION AND REPAIR OF BASIC ENGINE
2. Rear Mechanism - Inspect and Repair
2.1 Idler Bushing Inside Diameter and Idler Shaft Outside Diameter - Measure
Measure the idler bushing inside diameter and the idler shaft
outside diameter. If the value exceeds the limit, replace the
idler gear assembly or the idler shaft with a new one.
Note: After replacing idler bushing, finish the bushing inside
diameter by reaming.
Nominal
Item
value
Idler bushing
ø50 mm
Inside diameter
[1.97 in.]
Idler shaft
ø50 mm
outside diameter
[1.97 in.]
2.2 Idler Bushing - Replace
(1) Using the removing side of the idler bushing puller,
remove the idler bushing.
(2) Using the installing side of the idler push puller, press-
fit the idler bushing from the large gear side until it
becomes flush with the end face of gear boss. Further-
more, using the removal side of the idler bushing puller,
lower the idler bushing end face from end face of gear
boss by 1 mm [0.04 in.]
(3) After installing, ream the bore of idler bushing to the
specified dimension shown.
Note: Reaming after press-fit is necessary, as the rear idler
bushings are supplied in a semi-finished condition.
6-12
Standard value
Limit value
50.000 to 50.025 mm
50.060 mm
[1.9685 to 1.9695 in.]
[1.9708 in.]
49.950 to 49.975 mm
49.900 mm
[1.9665 to 1.9675 in.]
[1.9646 in.]
Idler Bushing Inside Diameter and Idler Shaft Outside
Diameter - Measure
Lower than gear boss end face
by 1 mm [0.04 in.]
Idler bushing puller
P/N:32591-02500
Idler gear
B
Rear idler bushing
ø50H7(
[ø1.97 (
Idler Bushing - Replace
Lower than gear boss end face
by 1 mm [0.04 in.]
Idler bushing puller
P/N:32591-02500
Idler gear
Rear idler bushing
ø50H7(
[ø1.97 (
Idler Bushing - Replace (Y2PTAW spec)
Measurement
direction
Measurement
point
1 mm
[0.04 in.]
A
A
ø0.1 S
ø0.1 S
B
+0.025
) mm
0
+0.001
) in.]
0
1 mm
[0.04 in.]
A
B
A
ø0.1 S
B
ø0.1 S
+0.025
) mm
0
+0.001
) in.]
0
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