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Gearbox shims
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Author:  Roger V [ May 15th, 2017, 1:03 am ]
Post subject:  Gearbox shims

Hi all

Where can I get gearbox shims?

The bearing on the primary shaft. Any tips on changing it if you don't have a press?

Any thoughts appreciated. :)

Author:  Roger V [ May 26th, 2017, 2:19 pm ]
Post subject:  Re: Gearbox shims

Bearing changed :D
So ..... about these shims!

Author:  subarupete [ May 26th, 2017, 3:44 pm ]
Post subject:  Re: Gearbox shims

Is it the top shaft (primary)?
Use the shim you had and adjust the selector forks if required.

Only the lower shaft(pinion) need a shim to set the pinion distance if the rear bearing has been changed.

Gearbox Guru Rick is you man really.

Author:  Roger V [ May 26th, 2017, 11:25 pm ]
Post subject:  Re: Gearbox shims

Thanks Pete
As per Haynes, I wanted to adjust the end float on the layshaft and main shaft.

I found the following site.
https://www.thebearingcompany.co.uk/cat ... egory=1716

Can't find the gearbox pixie dust section, but will give it a go. :D

I may be some time. ;)

Author:  ken [ May 26th, 2017, 11:55 pm ]
Post subject:  Re: Gearbox shims

Roger,
any chance of letting us know which section of Haynes you're working from, so that this shim can be identified?
Struggling with nomenclature here, it'd be a lot easier if everyone used 'input shaft', 'main shaft' and 'pinion shaft'... ;)

Author:  Roger V [ May 27th, 2017, 12:19 am ]
Post subject:  Re: Gearbox shims

Hi Ken/Pete
Haynes page 76. Gearbox section. Gear adjustment.
Endfloat - 2nd gear idler
Roller thrust bearing

Page 83, 2nd image for measuring current endfloat on mainshaft. I was going to add a shim next to the spacer collar.
Page 84 for measuring reduction gear/laygear endfloat. I was going to add a shim to either end of the existing shims as appropriate.

There is play in both of these areas. I was mostly trying to reduce the layshaft moving up and down the pinion shaft.

Of course ....... I could be being to pedantic. :ugeek:

Thanks guys

Author:  Derek [ May 27th, 2017, 6:35 am ]
Post subject:  Re: Gearbox shims

My Haynes manual 196, 1967 - 1990, shows these items just one page before those stated; 75;82;83.

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