Kubota WSM STa-30, Workshop Manual

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4-S4
ST
α
-30 · ST
α
-35, WSM REAR AXLE
Rear Axle
1. Tap out the rear axle.
(When reassembling)
• Apply grease to the oil seal.
• Do not allow any gap (A) between the inner and outer surfaces
of the oil seal (1). (Refer to figure left)
W1011138
[2] SERVICING
Backlash between Internal Gear and Planetary Gear
1. Set a dial indicator (lever type) on the tooth of the planetary gear.
2. Hold the planetary carrier and move the planetary gear to
measure the backlash.
3. If the measurement exceeds the allowable limit, check the next
items.
W1011342
Planetary Gear I.D., Planetary Gear Pin O.D. and Needle Bearing
O.D.
1. Measure the planetary gear I.D. with an inside micrometer.
2. Measure the planetary gear pin O.D. with an outside micrometer.
3. Measure the needle bearing O.D. with an outside micrometer.
4. If the measurement exceeds the allowable limit or factory
specification, replace them.
W1011456
(1) Oil Seal
(2) Rear Axle (3) Rear Axle Case
Backlash between
internal ear and
planetary gear
Factory spec.
0.1 to 0.2 mm
0.0039 to 0.0079 in.
Allowable limit
0.5 mm
0.020 in.
Planetary gear I.D.
Factory spec.
30.009 to 30.025 mm
1.18146 to 1.18209 in.
Allowable limit
30.05 mm
1.1831 in.
Planetary gear pin O.D.
Factory spec.
24.967 to 24.980 mm
0.98295 to 0.98346 in.
Allowable limit
24.95 mm
0.9823 in.
Needle bearing O.D. Factory spec.
2.494 to 2.500 mm
0.09819 to 0.09843 in.
KiSC issued 11, 2006 A