Yamaha 2004 YXR660 Service Manual page 274

REAR CONSTANT VELOCITY JOINTS, FINAL DRIVE
b c
GEAR AND DRIVE SHAFT
Selecting the final drive pinion gear shim
1. Select:
• final drive pinion gear shim(s) 1
1
M MMM
a. To find the final drive pinion gear shim thick-
"A"
Final drive pinion gear shim thickness:
d
a = 92.5 mm
a
b = a numeral (usually a decimal number) on
c = a numeral (usually a decimal number) on
d = a numeral (usually a decimal number) on
Example:
1) a = 92.5
2) If "98" is stamped on the final drive pinion
3) If "48" is stamped on the final drive pinion
4) If "03" is stamped on the final gear case,
5) Therefore, "A" is 0.97.
6) Round off the hundredth digit and select the
7 - 27
M MMM M M MMM M M MMM M
ness "A", use the following formula.
"A" = a + (c – b) – d
the final drive pinion gear bearing housing
either added to or subtracted from "34"
the final drive pinion gear bearing housing
either added to or subtracted from "55"
the final gear case either added to or sub-
tracted from "112"
gear bearing housing,
b = 34 + 0.98
= 34.98
gear bearing housing,
c = 55 + 0.48
= 55.48
d = 112 + 0.03
= 112.03
"A" = 92.5 + (55.48 – 34.98) – 112.03
= 0.97
appropriate shim(s).
In the example above, the calculated num-
ber is 0.97. The chart instructs you to round
off 7 to 5 at the hundredth place. Thus, the
shim thickness is 0.95 mm.
Hundredths
0, 1, 2
3, 4, 5, 6, 7
8, 9
DRIV
M MMM M M MMM M MMM
Rounded value
0
5
10