Kubota M105S, Workshop Manual

Page: 279 / 561

3-S43
M105S, WSM TRANSMISSION
Backlash and Tooth Contact between Spiral Bevel Gear and
Spiral Bevel Pinion Shaft
1. Set the dial indicator (lever type) with its finger on the tooth
surface.
2. Measure the backlash by fixing the spiral bevel pinion shaft (1)
and moving the spiral bevel gear (2) by hand.
3. When the backlash is too large, decrease the number of shims
(3) in the side of spiral bevel gear, and insert the removed shims
in the opposite side.
When the backlash is too small, decrease the number of shims
(4) in the side of the differential case (6), and insert the removed
shims in the opposite side.
4. Adjust the backlash properly by repeating the above procedure.
5. Apply red lead lightly over several teeth at three positions equally
spaced on the spiral bevel gear.
6. Turn the spiral bevel pinion shaft, while pressing a wooden piece
against the periphery on the spiral bevel gear.
7. Check the tooth contact. If not proper, adjust according to the
instructions next page.
(Reference)
• Thickness of adjusting shim (3), (4)
0.1 mm (0.004 in.) [Code No. 33740-32130]
0.3 mm (0.012 in.) [Code No. 33740-32140]
0.5 mm (0.020 in.) [Code No. 33740-32150]
• Thickness of adjusting collar (5)
1.2 mm (0.047 in.) Collar is built in standard.
0.8 mm (0.031 in.) [Code No. 3E251-32610]
1.0 mm (0.039 in.) [Code No. 3E251-32620]
1.2 mm (0.047 in.) [Code No. 3E251-32630]
1.4 mm (0.055 in.) [Code No. 3E251-32640]
1.6 mm (0.063 in.) [Code No. 3E251-32650]
W1048267
Backlash between spiral
bevel gear and spiral
bevel pinion shaft
Factory spec.
0.15 to 0.25 mm
0.0059 to 0.0098 in.
Allowable limit
0.4 mm
0.016 in.
(1) Spiral Bevel Pinion Shaft
(2) Spiral Bevel Gear
(3) Shim (4) Shim
(5) Adjusting Collar
(6) Differential Case
KiSC issued 03, 2007 A