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SHIMMING (EXCEPT FOR USA AND CANADA)
SELECTING THE FORWARD GEAR
SHIMS
NOTE:
Find the forward gear shim thickness (T1) by
selecting shims until the specified
measurement (M) is obtained with the
special tool.
1. Measure:
• Specified measurement (M)
Shimming Plate:
90890-06701..........................
Digital caliper:
90890-06704..........................
NOTE:
• Turn the tapered roller bearing outer race
two or three times so that the rollers seat.
• Perform the same measurement at three
points on the tapered roller bearing outer
race.
• Find the average of the measurements (M).
2. Calculate:
• Forward gear shim thickness (T1).
Forward gear shim thickness (T1) =
24.50 + F/100 mm - M
NOTE:
• "F" 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 "F" mark is
missing or unreadable, assume an "F"
mark of "0", and check the backlash when
the unit is assembled.
• If the "F" value is negative (-), then subtract
the "F" value from the measurement.
Example:
If "M" is "24.00 mm" and "P"mark is "+5",
then T1
= 24.50 + (+5)/100 - 24.00 mm
= 0.50 + 0.05 mm
= 0.55 mm
If "M" is "24.00 mm" and "F"mark is "-5",
then T1
= 24.50 + (-5)/100 - 24.00 mm
= 0.50 - 0.05 mm
= 0.45 mm
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