DRIVELINE/AXLE 4-21
BACKLASH
After assembling the final gear case ("4-
24), measure the
final bevel gear backlash as follows.
• Install the backlash measuring tool on the drive bevel gear
c
oupling, and set-up a dial gauge as shown in photo.
# 099
24-34510: Backlash measuring tool (27 – 50 mm)
09900-20607: Dial gauge (1/100 mm, 10 mm)
09900-20701: Magnetic stand
• Adjust the dial gauge so that it touches the backlash measur-
i
ng tool arm at the mark; hold the final driven bevel gear
securely, and turn the final drive bevel gear coupling slightly in
each direction, reading the total backlash on the dial gauge.
% Fi
nal bevel gear backlash
Standard: 0.08 – 0.16 mm (0.003 – 0.006 in)
If the backlash is not within the specification, adjust the shim
th
ickness as follows:
• Remove shims from final gear bearing case and final gear
c
ase, and measure total thickness.
• In order not to change the clearance between final driven
b
evel gear and bearing, the total thickness of the shims
installed after a change is made must equal the original total
thickness of shims.
• If backlash is too large:
a) Install a thinner shim pack
1 between final driven bevel
gear and final gear case.
b) Increase thickness of shims
2 between final driven bevel
gear bearing and bearing case by an amount equal to
decrease above.
• If backlash is too small:
a) Install a thicker shim pack
1 between final driven bevel
gear and final gear case.
b) Decrease thickness of shims
2 between final driven gear
bearing and bearing case by an amount equal to increase
above.
Shims
1 specifications
The shims
1 are available as a set (27326-48810).
Part number Shim thickness
09181-40011 0.95 mm (0.026 in)
09181-40013 1.05 mm (0.041 in)
09181-40014 1.10 mm (0.043 in)
09181-40176 1.20 mm (0.047 in)
09181-40182 1.40 mm (0.055 in)
09181-40212 1.50 mm (0.059 in)
27326-48G00-125 1.25 mm (0.049 in)
27326-48G00-135 1.35 mm (0.053 in)
27326-48G00-145
1.45 mm (0.057 in)
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