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GEARCASE
GEARS - SHIMMING AND ADJUSTMENT
GEARS - SHIMMING AND ADJUSTMENT
If the gearcase has been rebuilt or has had components replaced, shimming for correct gear contact and
backlash will have to be adjusted in order to ensure smooth, reliable operation of gears.
Shim / Washer and Mounting position
Numerical index / item Available thickness (mm) Design specification thickness (mm)
1
Pinion gear backup shim 1.7; 1.8; 1.9; 2.0; 2.1 2.0
2
Forward gear backup shim 0.8; 0.9; 1.0; 1.1; 1.2 1.2
3
Forward gear thrust washer 1.0 1.0
4
Reverse gear thrust washer 0.6; 0.8; 1.0 1.0
5
Reverse gear backup shim 0.6; 0.7; 0.8; 0.9; 1.0 0.8
1 Pinion gear backup shim
2 Forward gear backup shim
3 Forward gear thrust washer
4 Reverse gear thrust washer
5 Reverse gear backup shim
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