Kubota WSM STV32 Workshop Manual page 268

STV32 · STV36 · STV40, WSM
Turning Force of Spiral Bevel Pinion Shaft (Pinion Shaft Only)
1. Clamp the spiral bevel pinion shaft assembly to the vise and
tighten the staking nut.
2. Measure the turning torque of bevel pinion shaft.
3. If the turning force is not within the factory specifications,
adjust with the lock nut.
A After turning torque adjustment, be sure to stake the lock
nut.
Turning force Factory spec.
Adjusting Backlash and Tooth Contact between Spiral Bevel
Pinion Shaft and Spiral Bevel Gear
1. Set a dial gauge (lever type) with its finger on the spline of
spiral bevel pinion shaft.
2. Measure the backlash by moving the spiral bevel pinion shaft
by hand lightly.
3. If the backlash is not within the factory specification, change
the adjusting collars (3), (4). Change the adjusting collar (4) to
0.1 mm (0.004 in.) smaller size, and change the adjusting
collar (3) to 0.1 mm (0.004 in.) larger size.
4. Adjust the backlash properly by repeating the above
procedures
5. Apply red lead lightly over several teeth at three positions
equally spaced on the spiral bevel gear (1).
6. Turn the spiral bevel pinion shaft (2)
7. Check the tooth contact. If not proper, adjust with shim (5) and
adjusting collars (3), (4) according to the instructions below :
Backlash between spiral
bevel pinion shaft and Factory spec.
spiral bevel gear
(Reference)
A Thickness of adjusting collars (3), (4):
3.4 mm (0.134 in.) 4.1 mm (0.161 in.)
3.6 mm (0.142 in.) 4.2 mm (0.165 in.)
3.8 mm (0.150 in.) 4.4 mm (0.173 in)
4.0 mm (0.157 in.) 4.6 mm (0.181 in.)
A Thickness of adjusting shims (5):
1.6 mm (0.063 in.) 2.0 mm (0.079 in.)
1.7 mm (0.067 in.) 2.1 mm (0.083 in.)
1.8 mm (0.071 in.) 2.2 mm (0.087 in.)
1.9 mm (0.075 in.)
A After checking the tooth contact, checking the backlash
between spiral bevel pinion shaft and spiral bevel gear
again.
(1) Spiral Bevel Gear
(2) Spiral Bevel Pinion Shaft
(3) Adjusting Collar
6-S12
FRONT AXLE
58.8 to 78.4
6.0 to 8.0
13.2 to 17.6 ft-lbs
0000007638E
0.1 to 0.3 mm
0.004 to 0.012 in.
(4) Adjusting Collar
(5) Shim
0000007639E
KiSC issued 04, 2006 A