5. Secondary Gear Shaft

25 x 35 mm Thrust Shim Selection





1. Measure the distance between the flywheel housing surface and the ball bearing as shown, then note the measurement (Measurement A).
2. Install the secondary gear shaft on the transmission housing.





3. Measure the distance between the transmission housing surface and the thrust shim mounting surface of the secondary gear shaft as shown, then note the measurement (Measurement B).
4. Calculate 25 x 35 mm thrust shim thickness by following formula so that the secondary gear shaft thrust clearance comes into the tolerance.
Secondary Gear Shaft Thrust Clearance:
STANDARD: 0 - 0.15 mm (0 - 0.006 inch)
FORMULA:
25 x 35 mm Thrust Shim Thickness:
= Measurement A-Measurement B + Flywheel Housing Gasket Thickness: 0.5 mm (0.020 inch)
Example:
Measurement A: 32.7 mm (1.287 inch)
Measurement B: 30.1 mm (1.185 inch)
25 x 35 mm Thrust Shim Thickness
= 32.7 mm (1.287 inch) - 30.1 mm (1.185 inch) + 0.5 mm (0.020 inch) = 3.1 mm (0.122 inch)
You can select the thickness between 3.1 mm (0.122 inch) and 2.95 mm (0.116 inch).
The thrust shim can be used C or D in this case.
5. Select the 25 x 35 mm thrust shim from the following table.





THRUST SHIM, 25 x 35 mm