Servicing - wsm STW37 Workshop Manual

STW34, STW37, STW40, WSM

[3] SERVICING

Differential Gear
1. Remove the spiral bevel gear (6) with bearing (5) and bearing
(1) with the puller.
2. Tap out the spring pin (2) and pull out the differential pinion shaft
(3).
3. Remove the differential pinion (7) and differential side gear (9).
NOTE
• Arrange the parts to know their original position.
(When reassembling)
• Apply molybdenum disulfide (Three Bond 1901 or equivalent) to
the inner circumferential surface of the differential side gears (9)
and differential pinions (7).
• When inserting the spring pin (2), face its split in the direction
right-angled to the differential pinion shaft (3).
Differential case cover
Tightening torque
mounting screws
(1) Bearing
(2) Spring Pin
(3) Differential Pinion Shaft
(4) Differential Gear Case
(5) Bearing
Clearance between Differential Case and Differential Side Gear
1. Measure the differential side gear boss O.D..
2. Measure the differential case bore I.D. and calculate the
clearance.
3. If the clearance exceeds the allowable limit, replace damaged
parts.
Factory specification
Clearance between
differential case and
differential side gear
Allowable limit
Differential case bore
Factory specification
I.D.
Differential side gear
Factory specification
O.D.
Clearance between Differential Pinion Shaft and Differential
Pinion
1. Measure the pinion shaft O.D..
2. Measure the differential pinion I.D. and calculate the clearance.
3. If the clearance exceeds the allowable limit, replace damaged
parts.
Factory specification
Clearance between
pinion shaft and
differential pinion
Allowable limit
Differential Pinion shaft
Factory specification
O.D.
Differential pinion I.D. Factory specification
6-S10
FRONT AXLE
29.4 to 34.3 N·m
3.0 to 3.5 kgf·m
21.7 to 25.3 lbf·ft
(6) Spiral Bevel Gear
(7) Differential Pinion
(8) Shim
(9) Differential Side Gear
(10) Shim
9Y1211109FAS0016US0
0.040 to 0.082 mm
0.0016 to 0.0032 in.
0.20 mm
0.0079 in.
28.000 to 28.021 mm
1.1024 to 1.1032 in.
27.939 to 27.960 mm
1.1000 to 1.1008 in.
9Y1211109FAS0017US0
0.048 to 0.084 mm
0.0019 to 0.0033 in.
0.20 mm
0.0079 in.
10.966 to 10.984 mm
0.4317 to 0.4324 in.
11.032 to 11.050 mm
0.4343 to 0.4350 in.
9Y1211109FAS0018US0
KiSC issued 11, 2014 A