wsm M8540NARROW, Workshop Manual

Page: 142 / 303

TRANSMISSION M8540Narrow, M9540Narrow, WSM
N3-S34
5. SERVICING
[1] BEARING, SHIFT FORK AND SYNCHRONIZER
Ball Bearing
1. Hold the inner race, and push and pull the outer race in all
directions to check for wear and roughness.
2. Apply transmission fluid to the bearing, and hold the inner race.
Then, turn the outer race to check rotation.
3. If there is any defect, replace it.
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Needle Bearing and Thrust Needle Bearing
1. Check the needle bearing for abrasion, color change or other
damage.
2. If there is any doubt as to the condition of a needle bearing,
replace it.
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Taper Roller Bearing
1. Check the bearing for abrasion, color change or other damage.
2. If there is any doubt as to the condition of a taper roller bearing,
replace it.
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Clearance between Shift Fork and Shifter Groove
1. Measure the width of shift fork.
2. Measure the shifter groove width, and calculate the clearance.
3. If the clearance exceeds the allowable limit, replace them.
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Checking Contact between Coupling and Shifter
1. Check to see if there is flaw or wear on the spline of the coupling
and shifter, and the key groove on the coupling.
2. Engage the shifter with the coupling, and check that they slide
smoothly.
3. Similarly, check that there is any flaw or wear on the gear
splines.
4. If there is any defect, replace them.
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Clearance between shift
fork and shift groove for
main change section and
range section
Factory specification
0.15 to 0.40 mm
0.0059 to 0.0157 in.
Allowable limit
0.80 mm
0.031 in.
KiSC issued 07, 2013 A