Essential when rebuilding your engine to ensure that the upper vertical bevel gear has the correct backlash and position in relation to the camshaft bevel gear, these camshaft bevel shims fit between the camshaft and the front cambox bearing (i.e. in the front cambox well).
Fitted in conjunction with the upper vertical bevel gear shim, the ideal positioning is acheved when the gears are in line and there is a just perceptible gap (backlash) between teeth.
This is for a single shim in one of the following sizes - state which size required when ordering:
- 0.5mm = 0.021" or 21 thou (for some reason the actual thickness is 0.53mm which = 21 thou)
- 0.3mm = 0.012" or 12 thou
- 0.2mm = 0.008" or 8 thou
- 0.1mm = 0.004" or 4 thou
- 0.05mm = 0.002" or 2 thou
It is common practice to measure initially with no shims fitted, then add one or multiple shims to reach the desired final positive backlash, measuring each time shims are added or subtracted