Kubota WSM L3560 Workshop Manual page 446

L3560, L4060, L4760, L5060, L5460, L6060, WSM
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 (3)
and moving the spiral bevel gear (4) by hand.
3. When the backlash is too large, decrease the number of shims
(6) in the side of the spiral bevel gear, and insert the shims (5)
of the same thickness as the removed ones to the opposite side.
When the backlash is too small, do the opposite way to increase
backlash.
4. Adjust the backlash periphery 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 below.
Factory specification
Backlash between spiral
bevel gear and spiral
bevel pinion shaft
Allowable limit
(Reference)
• Thickness of shims (2)
0.1 mm (0.004 in.)
0.2 mm (0.008 in.)
0.5 mm (0.02 in.)
• Thickness of shims (5)
0.4 mm (0.016 in.)
0.5 mm (0.020 in.)
0.6 mm (0.024 in.)
0.7 mm (0.028 in.)
0.8 mm (0.031 in.)
0.9 mm (0.035 in.)
1.0 mm (0.039 in.)
1.2 mm (0.047 in.)
1.4 mm (0.055 in.)
• Thickness of shims (6)
0.4 mm (0.016 in.)
0.6 mm (0.024 in.)
0.8 mm (0.031 in.)
1.0 mm (0.039 in.)
1.2 mm (0.047 in.)
1.6 mm (0.063 in.)
(1) Pinion Bearing Case
(2) Shim
(3) Spiral Bevel Pinion Shaft
(4) Spiral Bevel Gear
3-S127
TRANSMISSION
0.15 to 0.30 mm
0.0059 to 0.012 in.
0.4 mm
0.02 in.
(5) Shim
(6) Shim
(7) Differential Support
(To be continued)
KiSC issued 03, 2016 A