6-S21
L4400 , WSM
FRONT AXLE
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.
(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
4. Adjust the backlash properly by repeating the above procedures.
W1019155
Backlash between 11T Bevel Gear and 16T Bevel Gear
1. Stick a strip of fuse spots 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 fuses with an outside micrometer.
5. If the backlash is not within the factory specifications, adjust with
shim (3).
(Reference)
• Thickness of adjusting shims :
0.4 mm (0.031 in.) 1.0 mm (0.039 in.)
0.6 mm (0.024 in.) 1.2 mm (0.047 in.)
0.8 mm (0.031 in.)
• Tooth contact : More than 35 %
W1019327
Backlash between spiral
bevel pinion shaft and
spiral bevel gear
Factory spec.
0.1 to 0.3 mm
0.004 to 0.012 in.
(1) Spiral Bevel Gear
(2) Spiral Bevel Pinion Shaft
(3) Adjusting Collar
(4) Adjusting Collar
(5) Shim
Backlash between bevel
gear (2) and bevel gear
Factory spec.
0.15 to 0.35 mm
0.006 to 0.014 in.
Allowable limit
0.6 mm
0.024 in.
(1) Bevel Gear
(2) Bevel Gear
(3) Shim
KiSC issued 07, 2007 A
Tractor Manuals Scotland - Please Do Not Copy
Tractor Manuals Scotland
