BSA Owners' Club Forum

The BSA Workshop => Singles => Topic started by: BeenyBoy on 30 October, 2017, 17:45:01

Title: B31 gearbox query
Post by: BeenyBoy on 30 October, 2017, 17:45:01
In the process of putting back together my B31 (plunger) gearbox- according to the bible it is imperative that the dot on the selector quadrant is lined up with the dot on the casing...slight problem...got a dot on the quadrant but there is nothing on the casing.... any ideas ?
Title: Re: B31 gearbox query
Post by: JulianS on 30 October, 2017, 18:44:32
Lining up the dots is the usual procedure for the swinging arm gearboxs on the "B" models. The plunger box needing a different appproach.

What sort of box and what year is your bike?
Title: Re: B31 gearbox query
Post by: BeenyBoy on 30 October, 2017, 19:00:13
Hi

Its a 1955 plunger model; the gearbox looks to be a "m" series unit as it has no cam plate and has selector forks;
Title: Re: B31 gearbox query
Post by: JulianS on 30 October, 2017, 19:29:58
Attached service sheet describes the reassembly of the box and may assist.
Title: Re: B31 gearbox query
Post by: BeenyBoy on 30 October, 2017, 20:06:07
Hi JulianS

Thanks for that ..I reckon I can sort it from that... its a much better description that the Haynes manual I'm working with

cheers and thanks again

Mike