BSA Owners' Club Forum

The BSA Workshop => Singles => Topic started by: cdsdorset on 08 June, 2021, 12:39:03

Title: B31 gearbox overhaul
Post by: cdsdorset on 08 June, 2021, 12:39:03
Does anyone have a name of someone they can recommend for a plunger gearbox overhaul.
Title: Re: B31 gearbox overhaul
Post by: Calum on 08 June, 2021, 22:26:42
I've just done my plunger box, it wasn't a bad job at all really. They're simple units. Be methodical and pay attention to the details and you should have no trouble doing it yourself. I was sent some helpful tech sheets on here which gave some good figures for bearing clearances etc.
Title: Re: B31 gearbox overhaul
Post by: Dr_Pinky on 20 June, 2021, 18:12:18
Hi,

I'm collecting parts to start rebuilding a (dismantled) early M20 box. I've always been apprehensive of tackling gearboxes, but want to give it a go.

The info I've found useful preparation includes the technical section on the WD BSA site (and searching the forum), plus the BSA service sheets and the Haynes manual (post-war singles). Handy tips from the WD BSA site include using a sealed main bearing -even if removing the inner seal- to aid continence; and guidance on shimming the shafts, if necessary.

Mind you, I've not got my hands dirty with it yet... ::)

   
Title: Re: B31 gearbox overhaul
Post by: cdsdorset on 20 June, 2021, 21:46:50
I just decided to get my arse in gear and did it yesterday.