Final drive gear

Information relating to the Matchless G2 or AJS Model 14 250cc Lightweight
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Final drive gear

Postby megga » Sat Jul 25, 2020 7:46 pm

With regards the final drive gear, the would any of you nice people know the tolerances between the shaft and the seal sleeve? and what's to stop it from leaking as its just a sleeve?
Brian

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Re: Final drive gear

Postby clanger9 » Mon Jul 27, 2020 10:11 am

Hi Brian,

Are you referring to the output shaft seal (041267)? That seals against the output gear spacer (041391) - not the shaft itself (041273 or 044075).
IMG_1752.jpg

IMG_1177.jpg


As for the seal between the mainshaft and the sleeve gear bushes: there isn't one. Gearbox oil will seep past here - especially if the bike is left on the side stand.
IMG_0241.jpg
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Re: Final drive gear

Postby megga » Thu Jul 30, 2020 10:35 am

The shaft and the spacer, I have 0.039 inch (or 0.10mm) difference between the shaft and the spacer. I'm replacing the seal, I was just concerned that the 0.094" may also be a place for a leak. and I cant understand why the they wouldn't have sealed it from the case to the shaft.

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Re: Final drive gear

Postby Martin.S » Sat Aug 01, 2020 11:51 am

No No No - 0.039" does not equal 0.1mm it equals one whole mm.
And Megga - where does that 0.094" come from?
Now Clanger - if you were to press that little button on your verynear marked inch/mm then your readings would be in the same format as these bikes were made and not that Micky Mouse system (mm) that's now fashionable outside of the USA ;)

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