Kubota M9540, Workshop Manual

Page: 318 / 619

3-S74
M8540, M9540, WSM TRANSMISSION
Backlash and Tooth Contact between Spiral Bevel Gear and
Spiral Bevel Pinion Shaft
1. Set the dial indictor (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 (3) by hand.
3. When the backlash is too large, decrease the number of shims
(4).
When the backlash is too small, increase the number of shims
(4).
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 (4)
0.1 mm (0.004 in.) [Code No. 3C081-32130]
0.3 mm (0.012 in.) [Code No. 3C081-32140]
0.5 mm (0.020 in.) [Code No. 3C081-32150]
• Thickness of adjusting collar (2)
0.8 mm (0.031 in.) [Code No. 36200-32610]
1.0 mm (0.039 in.) [Code No. 36200-32630]
1.2 mm (0.047 in.) [Code No. 36200-32650]
1.4 mm (0.055 in.) [Code No. 36200-32670]
1.6 mm (0.063 in.) [Code No. 36200-32690]
W1072839
Backlash between spiral
bevel gear and spiral
bevel pinion shaft
Factory spec.
0.2 to 0.3 mm
0.0079 to 0.0118 in.
Allowable limit
0.4 mm
0.016 in.
(1) Spiral Bevel Pinion Shaft
(2) Adjusting Collar (3) Spiral Bevel Gear
(4) Shim
KiSC issued 09, 2008 A