Reply To: JAP 2a flywheel removal

[davidbliss]

Grahame, I have an idea what someone has done, the flywheel nut should be done up quite tight without the need of locktite, and with it being held in position with the roll pin and flywheel locktited sort of sends shivers down my back. and it could be penny has dropped. Right the crankshaft should be pulled up tight against that mag sides bearing, So it should be crank inner face up against, bearing, spacer, points cam and then flywheel all locked up tight with the nut, so you should have four parts to fit flywheel side yours wasn’t pulled up tight hence roll pin. I think what some would say is a non mechanical person has attacked or lost a bit it could even be on the impeller side loosing some shims that adjust clearance on the back side. Now if the flywheel wasn’t on at that time being messed with at the pump side they would have drawn the crankshaft threw some bit, then it looks to me they then fitted the flywheel later and on what should have been able to do is pull the nut up tight but in-doing so would have pulled the crank threw locking the impeller up against the back face, So I would remove pump housing and unscrew the impeller. Sort out the flywheel and hopefully be able to pull up tight and still turn the flywheel someone has lost something.