wsm L3301 Workshop Manual page 494

L3301, L3901, L4701, WSM
Backlash 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 specifications, change
the adjusting collars (3), (4).
For example, when the backlash is too large, change the collar
(3) to thinner one and change the collar (4) to thicker one. At this
time, if the collar (3) is thinned by 1 mm, the collar (4) must be
thickened by 1 mm.
4. Adjust the backlash properly by repeating the above
procedures.
(Reference)
• Standard size of adjusting collar (3), (4):
6.0 mm (0.236 in.) of thickness (total 12.0 mm)
• Standard size of adjusting shim (5):
2.0 mm (0.079 in.) of thickness
• Tooth Contact:
More than 35 %
• Center of tooth contact:
1/3 to 1/2 of the entire width from the small end.
Backlash between spiral
bevel pinion shaft and Factory specification
spiral bevel gear
(1) Spiral Bevel Gear
(2) Spiral Bevel Pinion Shaft
(3) Adjusting Collar
Backlash between 11T Bevel Gear and 16T Bevel Gear
1. Stick plastigauge or wire of solder on the bevel gear (1) with
grease.
2. Fix the front axle case, bevel gear case and front gear case.
3. Turn the axle.
4. Remove the bevel gear case from front axle case and measure
the thickness of the plastigauge with scale.
5. If the backlash is not within the factory specifications, adjust with
shim (3).
Factory specification
Backlash between bevel
gear (2) and bevel gear
Allowable limit
(Reference)
• Thickness of adjusting shims:
0.4 mm (0.031 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.)
• Tooth contact:
More than 35 %
• Center of tooth contact:
1/3 to 1/2 of the entire width from the small end.
(1) Bevel Gear
(2) Bevel Gear
6-S30
FRONT AXLE
0.1 to 0.3 mm
0.004 to 0.012 in.
(4) Adjusting Collar
(5) Shim
9Y1211012FAS0045US0
0.15 to 0.30 mm
0.006 to 0.012 in.
0.6 mm
0.024 in.
(3) Shim
9Y1211012FAS0046US0
KiSC issued 09, 2016 A