- Fri Mar 22, 2019 12:45 am
#81861
Over time the spline on the mainshaft can slowly wear (fret) into the rear abutment of the clutch hub. Eventually causing the hub to develop free-play (read: come loose) on the shaft, causing the clutch to drag and effecting primary chain alignment
For the 4sp box part 90161, hardened splined spacer is offered as a remedy. As the instructions say, minor machining of the hub is required to fit the spacer to the Indian made clutch. Some (most-many?) Redditch made clutch centers had the replaceable spacer std.
Simply fitting a thicker washer under the mainshaft locking nut does not resolve the matter. Besides, primary chain alignment will be 'out' further contributing to clutch drag.
There will always be some wobble on the clutch basket when the plates are lifted/removed. Just make sure there isnt any when it is fully assembled...
Be careful when re-tightening the clutch/mainshaft retaining nut on the 5sp gearbox, as the end of the shaft is known to snap off at the thread root when over tightened, attempting to eliminate the hub 'free play' you mentioned...
If you are fitting a new Nylock nut 25-30Flb is more than adequate. And if you are the paranoid type, you can apply a drop of Loctite thread sealant.