Fork Setting
To check the operation of the gearchange and to position the selector forks accurately it is necessary to use the fork setting jig assembly. This is made up of a baseplate (ERT-10-02) with 5 distance bars (ERT-10-03) and an input shaft bearing (ERT-03-11) this assembly simulates the gearbox maincase.
1. The selector forks should be adjusted individually. The forks are correctly set when :-
A) The dog ring is centred on the hub between the gears
B) The dog ring engages fully with either gear
C) When fully engaged with either gear there should be 0.005" between the gear and the dog faces
If the dog rings are over engaged it will cause overheating of the gears and excessive selector fork wear.
If the dog ring does not fully engage with a gear, the gearbox will jump out of gear easily. This problem can also be caused with worn dog rings.
2. The position of the selector forks is adjusted by changing the selector fork shim thickness. These shims are available in 0.005" increments.