Yamaha 55BET 55DEHD E60HMHD, Service Manual

Page: 364 / 488

SHIMMING (EXCEPT FOR USA AND CANADA)
E
2. Calculate:
• Reverse gear shim thickness (T2).
NOTE:
• “R” is the deviation of the lower case
dimension from standard. It is stamped on
the trim tab mounting surface of the lower
case in 0.01 mm units. If the “R” mark is
missing or unreadable, assume an “R”
mark of “0”, and check the backlash when
the unit is assembled.
• If the “R” value is negative (-), then add the
“R” value to the measurement.
Example:
If “M” is “28.60 mm” and “R” mark is “+5”,
then T2
= 28.60 - 28.00 - (+5)/100 mm
= 0.60 - 0.05 mm
= 0.55 mm
If “M” is “28.60 mm” and “R” mark is “-1”,
then T2
= 28.60 - 28.00 - (-1)/100 mm
=0.60 + 0.01 mm
=0.61 mm
3. Select:
• Reverse gear shim(s).
Example:
If “T2” is “0.39 mm”,
then pinion gear shim = 0.40 mm
If “T2” is “0.44 mm”,
then pinion gear shim = 0.45 mm
Calculated numeral at 1/100 th
place
Using shim
more than or less
0.00 0.02 0.02
0.02 0.05 0.05
0.05 0.08 0.08
0.08 0.10 0.10
Available shim thickness:
0.10, 0.12, 0.15, 0.18, 0.30, 0.40, 0.50 mm
Reverse gear shim thickness (T2) =
M - 28.00 - R/100 mm
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