Hi folks - Adrian again here with my basket case Ossa!

 

So I went to put the clutch mechanism onto the shaft. Behind the clutch are a thrust washer and a spacer according to my Clymer manual. As always with a basket case like this - I don't have these parts, or if I do - I don't recognise them amongst boxes of irrelevant non-Ossa parts, machine tool bits and bobs, random stuff etc...

 

I have a thrust washer that fits on the shaft nicely, but how thick should it be, and what about the outside diameter?

 

I have no idea as to the size of the spacer, but I assume it is wide enough to ensure that the inner sleeve of the needle roller bearing is just proud of the clutch basket - so that the clutch inner pushes against this, not against the basket? I've found a mild steel spacer that seems to do the job, but is mild steel up to the job? It is a little loose on the shaft too. Is this the correct spacer?

 

The part numbers are given as:

111.076 - Thrust washer and

111.077  - Spacer

 

I have a lathe if I need to make something up (and a very good toolmaker friend!)

Any info whatsoever gratefully received.

 

Thanks

Adrian

 

 

 

The thrust washer is approx 2mm in thickness. It's a snug fit with the ID on the shaft, the OD is 30mm.

 

The spacer is also a snug fit on the shaft and 5mm - 6mm in length (digital vernier packed up) The OD is 22mm, slightly thicker than the sleeve which is 20mm

The thrust washer is approx 2mm in thickness. It's a snug fit with the ID on the shaft, the OD is 30mm.

 

The spacer is also a snug fit on the shaft and 5mm - 6mm in length (digital vernier packed up) The OD is 22mm, slightly thicker than the sleeve which is 20mm

 

Thank you, thank you, thank you!!

 

This restoration (ie money-pit that is driving me mad) would be even more difficult without the excellent help offered on this forum. :-)

 

Right, off to fit the clutch and tighten the front sprocket nut....

 

I'll no doubt be back shortly with my next question..... :-(

 

Thanks

Adrian