BSA Owners' Club Forum

The BSA Workshop => Twins => Topic started by: bikerbob on 27 February, 2017, 09:33:05

Title: A65 Early clutch changes
Post by: bikerbob on 27 February, 2017, 09:33:05
I have an early A65 1963 and the clutch has quite a bit of side play and I notice that a few years later they fitted the clutch shims. I was wondering if they were introduced to take up the side play, looking at both parts lists it would seem that to update my clutch I would have to buy part numbers  68-3253  68-3252  and 68-3245 is there any thing else I would need to consider before going any further. Is what I am considering possible as also the clutch is quite noisy and maybe think the side play is responsible I did fit new rollers a couple of years ago which did not cure the noise.
Title: Re: A65 Early clutch changes
Post by: JulianS on 27 February, 2017, 10:20:45
Yes it looks like it is possible.

BSA dealt with it in Parts Service Bulletin G24 from June 1963 - except for 68 3245 which I think was an earlier modification.

Title: Re: A65 Early clutch changes
Post by: bikerbob on 27 February, 2017, 15:21:26
Thanks for that info Julian, although my bike is a 1963 model with the rod operated rear brake as opposed to the 1962 cable operation it left the factory in October 1962 but was not first registered until June 1963. The original parts list which I have for 1962-63 models does not list either 68-3253 or 68-3245 shims and the clutch sleeve is part 68-3212,I have a later parts list that shows all the 3 amended parts both shims 68-3253 and 68-3245 and the sleeve is 68-3252. I am at present awaiting a new alternator as one of the holding bolts for the aternator broke and has now damged the present alternator the insulation is breaking up altough it still works I am going to replace it and strip the clutch down and look at the components with a view to doing the changes mentioned.
Title: Re: A65 Early clutch changes
Post by: bikerbob on 01 March, 2017, 19:27:11
I have stripped the clutch down today and have found that my bike has the thrust washer 68-3245 already fitted bit surprised really as it is not listed on the original 1962-63 parts list and as I have said before my bike left the factory in October 1962 although a 1963 model. So I have ordered a later clutch sleeve and have the other thrust washer to hand so will update when it arrives, I suspect it will only difffer in the thickness shoulder where the thrust washer fits. If it was not so hard it would have been possible to machine the existing clutch sleeve to accommodate the other thrust washer. Incidently I can't find any parts list that shows just the one thrust washer fitted.
Title: Re: A65 Early clutch changes
Post by: JulianS on 01 March, 2017, 19:53:21
I think it is explained in a footnote on page 35 of A50 A65 parts book 00-5116, which gives engine numbers for introduction of the new parts, 68 3245 being introduced some months earlier than 68 3252 and 68 3253
Title: Re: A65 Early clutch changes
Post by: bikerbob on 09 March, 2017, 16:22:44
Just an update the new clutch center arrived and everything went back together OK checking with the old one the only differences are the shoulder is narrower to accomodate the thrust washer and the 4 holes which are approx 2mm dia in the recessesed part of the clutch center have been left out. This all came about because I had to ft a new alternator the hardest part of the whole job was feeding the alternator wires through the back of the primary case the hole is just not large enough to get the 2 wires through with the outer sheath covering the wires I had to cut the outer sheath back with shrink cable. I also had to cut one of the bullit connecters off as there was not enough room to get both through the hole together.