AJS & Matchless Owners Club

Good afternoon Everyone,
Hope you can help with a question regarding end float in my Burman CP gearbox.
I've searched the internet but not had much luck finding a great deal of information on this.
There's end float on the shafts, in particular quite a lot on the layshaft, in the region of 0.060".
I noticed when assembled but with the cover off, I have a slight mismatch between the end gear of the layshaft and main shaft. Sorting the slight mismatch or eliminating the end float doesn't present a problem but I'm sure it's critical that the selector shaft is in the correct position in relation to the two geared shafts.
Is there some sort of a datum for the gears which can be worked to, the positions of the 3-shafts in relation to each other?
Any words of wisdom or advice greatly appreciated!
Thanks,
Gino.

Gino-Ant wrote: ↑Mon Jan 24, 2022 3:05 pm I've searched the internet but not had much luck finding a great deal of information on this.

This is just one techy article on the CP 'box. I haven't read it but it may help........

http://archives.jampot.dk/technical/Tra ... b_1941.pdf



More practical articles here in the section: 'Technical' then choose 'Transmission' then 'Burman' in the following link :

http://archives.jampot.dk/

See also under the 'Books' section for the Owners and Workshop manuals plus Spares Lists.

Thanks Spriddler,
I’ve pretty much scoured the various sections without luck unfortunately.
Time to get back to basics I think and work it out, shouldn’t be too difficult!
Cheers again, G

It sounds like you need to replace the 2 lay shaft bushes if end float is a problem , end float will be controlled by gasket thickness on the inner housing to casing or wear on the bush. Is there excessive movement on the bush causing mismatch on gears
I have had problems with excessive main shaft end float that causes clutch end float