FRONT AXLE
B2420, WSM
6-S12
Turning Torque of Spiral Bevel Pinion Shaft (Pinion Shaft Only)
1. Install the spiral bevel pinion shaft assembly only to the front
axle case.
2. Measure the turning torque of spiral bevel pinion shaft.
3. If the turning torque is not within the factory specifications,
adjust with the lock nut.
• After turning torque adjustment, be sure to stake the lock
nut.
9Y1210436FAS0020US0
Backlash between Spiral Bevel Pinion Shaft and Spiral Bevel
Gear
1. Set a dia gauge (lever type) with its finger on the spline of spiral
bevel pinion shaft.
2. Measure the backlash be moving the spiral bevel pinion shaft by
hand lightly.
3. If the backlash is not within the factory specifications, select the
adjusting collar (3).
4. Adjust the backlash properly by repeating the above
procedures.
(Reference)
• Above factory specification should be measured on the tooth of
spiral bevel pinion. When measuring the backlash on the spline
of its shaft, factory specification will be 0.05710 to 0.1714 mm
(0.002248 to 0.006748 in.).
• Thickness of adjusting collars (3):
3.40 mm (0.134 in.) [Code No. 37410-58160]
3.60 mm (0.142 in.) [Code No. 37410-58170]
3.80 mm (0.150 in.) [Code No. 37410-58150]
3.90 mm (0.154 in.) [Code No. 6C040-56630]
4.00 mm (0.157 in.) [Code No. 37410-58120]
4.10 mm (0.161 in.) [Code No. 37410-58130]
4.20 mm (0.165 in.) [Code No. 37410-58140]
4.40 mm (0.173 in.) [Code No. 37410-56680]
4.50 mm (0.177 in.) [Code No. 6C040-56620]
4.60 mm (0.181 in.) [Code No. 37410-56660]
9Y1210436FAS0021US0
Turning torque of spiral
bevel pinion shaft
Factory specification
0.80 to 1.0 N·m
0.082 to 0.10 kgf·m
0.59 to 0.73 lbf·ft
(1) Collar (2) Lock Nut
Backlash between spiral
bevel pinion shaft and
spiral bevel gear
Factory specification
0.1 to 0.3 mm
0.004 to 0.01 in.
(1) Spiral Bevel Gear
(2) Spiral Bevel Pinion Shaft
(3) Adjusting Collar
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