Author Topic: B31 gearbox query  (Read 142 times)

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BeenyBoy

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B31 gearbox query
« 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 ?

JulianS

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Re: B31 gearbox query
« Reply #1 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?

BeenyBoy

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Re: B31 gearbox query
« Reply #2 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;

JulianS

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Re: B31 gearbox query
« Reply #3 on: 30 October, 2017, 19:29:58 »
Attached service sheet describes the reassembly of the box and may assist.

BeenyBoy

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Re: B31 gearbox query
« Reply #4 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