Shimming; Selecting The Pinion Shim - Yamaha 250GETO Service Manual

Shimming

NOTE:
9 Shimming is not required when assembling
the original lower case and inner parts.
9 Shimming is required when assembling the
original inner parts and a new lower case.
9 Shimming is required when replacing the
inner part(s).

Selecting the pinion shim

1. Install the special service tools onto the
drive shaft 1.
T3
3
NOTE:
9 Select the shim thickness (T3) by using the
specified measurement(s) and the calcula-
tion formula.
9 Install the special service tools onto the
drive shaft so that the shaft is at the center
of the hole.
9 Tighten the wing nuts another 1/4 of a turn
after they contact the fixing plate 2.
Pinion height gauge 3:
90890-06710
6S35H11
2. Install the pinion and pinion nut, and then
tighten the nut to the specified torque.
3. Measure the distance (M4) between the
special service tool and the pinion as
shown.
4
NOTE:
9 Measure the pinion at 4 points to find the
distance average.
9 Make of note the each measurement
6S360150
numerical.
2
4. Turn the thrust bearing 5 2 or 3 times to
seat the drive shaft housing 6, and then
measure the housing height (M3) as
shown.
1
6S360160
NOTE:
9 Measure the thrust bearing at 4 points to
find the height average.
9 Make of note the each measurement
numerical.
Shimming (regular rotation model)
Pinion nut:
142 N·m (14.2 kgf·m, 104.7 ft·lb)
Digital caliper 4: 90890-06704
4
M3
1
2
3
M4
6S360170
4
5
6
7
5
8
6
S60V6640
9
6-24