Positioning The Final Drive Pinion Gear And Ring Gear - Yamaha YFM660FP Service Manual

REAR CONSTANT VELOCITY JOINT/FINAL DRIVE GEAR
AND DRIVE SHAFT
POSITIONING THE FINAL DRIVE PINION
GEAR AND RING GEAR
When the final drive pinion gear, ring gear,
final gear case and/or ring gear bearing hous-
ing are replaced, be sure to adjust the posi-
tions of the final drive pinion gear and ring gear
using the shim(s).
Final drive pinion gear shim selection
1.Select:
Final drive pinion gear shim(s) 1
●
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Selection steps:
●
To find the final drive pinion gear shim thick-
ness "A", use the following formula.
Final drive pinion gear shim thickness:
"A" = a + (c – b) – d
a = 92.5 mm
b = a numeral (usually a decimal number)
on the pinion gear bearing housing
either added to "34"
c = a numeral (usually a decimal number)
on the pinion gear bearing housing
either added to "55"
d = a numeral (usually a decimal number)
on the final drive gear case either added
to "112"
Example:
1) a = 92.5
2) If "98" is stamped on the pinion gear
bearing housing,
b = 34 + 0.98 = 34.98
3) If "48" is stamped on the pinion gear
bearing housing,
c = 55 + 0.48 = 55.48
4) If "03" is stamped on the final drive gear
case,
d = 112 + 0.03 = 112.03
5) Therefore, "A" is 0.97.
"A" = 92.5 + (55.48 – 34.98) – 112.03
= 0.97
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