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CHAS
SHAFT DRIVE
EAS00719
MEASURING THE RING GEAR BACKLASH
1. Secure the final drive assembly in a vise.
2. Remove:
• final drive oil drain bolt
3. Drain:
• final drive oil
(from the final drive assembly)
4. Measure:
• ring gear backlash
Out of specification
→
Adjust.
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a. Install a bolt
1
of the specified size, into the
final drive oil filler hole.
b. Finger tighten the bolt until it stops the ring
gear from moving.
NOTE:
@
Do not overtighten the bolt.
@
c. Install the final gear backlash band
2
and
dial gauge
3
.
a
Dial-gauge-plunger contact point 60 mm
d. Gently rotate the gear coupling from
engagement to engagement.
e. Record the reading on the dial gauge.
f. Remove the dial gauge, final gear backlash
band, and bolt.
g. Rotate the final drive pinion gear 90°.
h. Reinstall the bolt, special tool, and dial
gauge.
i. Repeat steps (d) to (h) three more times (for
a total of four measurements).
j. If any of the readings are over specification,
adjust the ring gear backlash.
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Ring gear backlash
0.25 ~ 0.45 mm
Final gear backlash band
90890-01230