1960 B33 alternator model clutch

[RichardAB]

Please advise what special tools do i need to remove clutch and alternator to allow removal of inner case? Are the threads left or right and torque settings when reassembly. I've not removed outer case yet
Any tips/advice would be most welcome as not done this before.
Thank you

[neil1964]

I'll start off but caveat this in that I have not got alt B series but have stripped and repaired many similar. Remove battery fuse.
All threads are right hand. You will need imperial spanners (ideally both sockets and ring). The clutch hub has specific puller, assuming stock 4-spring (vs 6-spring) clutch. I have both on the shelf but you may need to wait until stripped or buy both in prep (time vs money!)
You need to loosen footrest long through bolts and back off the rear brake. Drain oil using lowest screw.
Undo/remove/save screws (OEM flat blade cheese heads, often replaced with cap heads) these are 1/4bsw. Buy your gaskets and new tabwashers in advance.
The stator has three studs nuts (iirc 5/16"). Release the wire bullets behind caseUndo these and slide stator off (check for screw that secures the cable inside away from chain. Note the position of these studs as you need to make sure the rotor and stator have even sir gap on reassembly.
The clutch should be like Triumphs with 4 springs. Note how many threads are visible on studs before removing. The clutch centre nut is best undone with box in gear and someone steadying bike whilst standing on the temporarily reconnected rear brake. I use a 'rattle gun' for that nut and the alternator rotor, useful if you have one.
Common issues are clutch and chain wear, loose alternator rotors, chipped or worn clutch main shafts. Old stators and wires will be quite tired (probably loose coils by now. Most modern stators are encapsulated.
There are many more experienced with these here and will point out things I omitted/forgot!

[RichardAB]

Thank you. I've removed the outer case and have a 4 spring clutch
Appears I need a tool to remove the screws. I've seen one on eBay

[neil1964]

Yes, I've got a large flat blade that I've put a slot in!

[neil1964]

67-3166 is the puller for your clutch hub (common to bsa and triumph 4-spring clutches

[RichardAB]

Thank you for both posts. Do you mean 67- 37(not 1)66?

[JulianS]

The spring tool shown above is difficult to use and uncomfortable to grip, I would avoid it. The screwdriver blade with a slot as neil1964 is good or the tool in the photos below which I use are better options. You may need to insert a thin blade between the spring and the slotted nut to guide the spring over the pip on the nut which stops it unscrewing.

My tool came from an ebay seller

https://www.ebay.co.uk/itm/146330253362

[JulianS]

61 3362 is for the 6 spring clutch and has an internal thread so will not fit the 4 spring sleeve.

Don't buy 61 3766 which is for the A65 type 3 spring clutch and has a 1 inch x 20 tpi external thread.

The alternator B31/33 clutch sleeve is the same part (42 3170 with internal thread) as used on the 4 spring A10 clutch so uses the same puller tool 61 1912 which has a 1 inch x 24 tpi external thread.

[RichardAB]

Thank you for advice on both. Ref the puller. Dragonfly out of stock and as far as I can find others are quoting the part number but state 26TPI. Can you point me in direction (link?) of where I can buy/hire one. Thank you

[JulianS]

This from the BSA service sheets is why I say 24tpi. Bottom left.

You could try C and D Autos in Henley in Arden by phone, I have always found them very helpful. Been in business for many years. 01564 795000

Or see this ebay seller

https://www.ebay.co.uk/itm/202006280924?_skw=bsa+a10+clutch+tool&epid=2087135868&itmmeta=01K7PH5SFT6B424JW5JS7EG0XR&hash=item2f08833adc:g:TC0AAOSwi0ZoPxy7&itmprp=enc%3AAQAKAAAA8FkggFvd1GGDu0w3yXCmi1dGxyOUb7DKf5cAPNe5rK6TpI4N7n

[RichardAB]

Thank you. I've contacted C&D and will see what they come back with. When I first bought the B33 in 1997 I visited them at Acocks Green, always very helpful.
The service sheet is very useful too. I've gone with your recommendation on the spring tool.
I'm sure I will have further questions once it's stripped