Print Page - 1954 BSA B31 plunger gearbox /engine sprocket

Title: 1954 BSA B31 plunger gearbox /engine sprocket
Post by: briancairns on 01 Mar, 2023, 23:46

Hi,
My break-hub rear sprocket is badly hooked so I am replacing it.
I have been advised to change the gearbox/ engine sprocket at the same time.
Is the gearbox sprocket change a big/complicated job ? What does it entail? And do I need any specialist tools?

Cheers
Brian

Title: Re: 1954 BSA B31 plunger gearbox /engine sprocket
Post by: idie on 02 Mar, 2023, 09:26

You will need to remove the nearside foot rest outer chain case, engine sprocket and cush drive. Also the clutch and the inner chaincase before you can access the gearbox sprocket. This only needs the clutch centre removal tool.

Title: Re: 1954 BSA B31 plunger gearbox /engine sprocket
Post by: briancairns on 03 Mar, 2023, 02:03

Thanks Idie,

Too much for a mechanical novice ?

Cheers

Brian

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The BSA Workshop => Singles => Topic started by: briancairns on 01 Mar, 2023, 23:46