Kubota M5040 Workshop Manual page 305

M5040, M6040, M7040, WSM
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.
Factory spec.
Backlash between spiral
bevel gear and spiral
bevel pinion shaft
Allowable limit
(Reference)
• Thickness of adjusting shim (4)
0.3 mm (0.012 in.)
1.0 mm (0.039 in.)
1.2 mm (0.040 in.)
1.4 mm (0.055 in.)
1.6 mm (0.063 in.)
• Thickness of adjusting collar (2)
2.8 mm (0.110 in.)
3.00 mm (0.118 in.)
3.2 mm (0.126 in.)
3.4 mm (0.134 in.)
3.6 mm (0.142 in.)
(1) Spiral Bevel Pinion Shaft
(2) Adjusting Collar
3-S52
TRANSMISSION
0.2 to 0.3 mm
0.0079 to 0.0118 in.
0.4 mm
0.016 in.
(3) Spiral Bevel Gear
(4) Shim
W1072839
KiSC issued 06, 2008 A