Hi All,
I am in the process of removing the main gearbox shaft of my C15 ready to set up the end float.
I've been watching Hugh Ferrier's video with interest, but he is completely stripping down his engine. I don't want to do a fraction of what he does if I don't have to.
I've got the cover off of the clutch and removed the plates. (See photo)
So..... Do I really need to remove the alternator, primary chain and flywheel, like Hugh, or can I now pop out the gearbox shaft and leave everything else in place?
Looking at the illustration in Rupert Ratio, I am thinking that I might be able to leave the innermost gear, which drives the primary sprocket in place as the spacer is on the inside of this.
BR, Ian
I wonder if you can just crack the clutch centre off its taper but leave it in place ??
concentrate on the other side ??
That's what I was thinking. If I don't hear anything to the contrary I'll give it a go.
Hi,
You may have to make sure the Wooduffe key comes out or it may foul the bearing. Obviously remember to put it back put it back on reassembly.
Dave.
Hello Ian,
As Dave says above, your problem will be the woodruff key in the end of the mainshaft. The mainshaft has to pass back through the bush of the sleeve gear and there's not enough room, see the pic below. I have tried in the past to get the clutch basket out whilst leaving the crankshaft gear in place behind the gen stator but never had any success. If there is a split link in the primary chain you could try splitting it and taking out the clutch basket, but getting the chain back together in situ is a real challenge.
BR
Bill.
Hi Bill,
In that case I may have to gird up my loins and do it Hugh's way. I reckon the scary bit will be getting the flywheel off without losing all the rollers.
BR, Ian
Hi,
Pick the rollers out with a small magnet.
On reassembly and before fastening it all up take the opportunity to check the chain alignment and shim behind the engine sprocket accordingly.
Dave.
Hello Ian,
My preferred method is to leave the puller and the hub in place on the clutch centre. When you've pulled the centre off of the taper and your ready to lift out the clutch assy (hub, centre, rollers and chain wheel) get a grip of the puller and press your thumb against the hub, that will hold everything together, then lift all of it out at once, keeping a tight hold of the puller. As soon as you can turn it all through 90 degrees so that the clutch assy is hanging from the puller and put it on the bench. You can then remove the puller and hub from the centre and stare in satisfaction at the rollers still in place.
I have played at 'hunt the rollers' on the garage floor a few times, it always ends with 1 roller missing, it must be some sort of ancient BSA law. ;)
BR
Bill.
Brilliant! Thanks for the tip Bill. I am glad I postponed doing the job until I had got some guidance.
Ian
P.S. I used a rare earth magnet to remove the clutch plates. It was much too strong! Rapped knuckles later I am looking for a smaller magnet!