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IRS gearbox tool

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packers1712
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IRS gearbox tool

Post by packers1712 » 7th January 2019 - 9:53pm

Hi everyone, bit of a long shot but does anyone have a pinion nut socket that they would be willing to lend me?

Thanks Doug.

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purplepeter
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Re: IRS gearbox tool

Post by purplepeter » 7th January 2019 - 10:18pm

First port of call is probably Peter Englezos at Cog Box http://www.cogboxtransmissions.com/index.html

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packers1712
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Re: IRS gearbox tool

Post by packers1712 » 8th January 2019 - 7:30pm

On the same subject I have dismantled the rest of the gearbox in an attempt to fix the “crunching” when down shifting from 3rd to 2nd however there are no visble signs of wear or broken parts! Any ideas?

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broady_6
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Re: IRS gearbox tool

Post by broady_6 » 8th January 2019 - 9:20pm

ive never been brave enough to go inside one of these boxes. could you do a us a thread so we can all see what your up to? it might also help find your problems, what seems right to one person may look wrong to another.
The sultan of swing

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packers1712
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Re: IRS gearbox tool

Post by packers1712 » 8th January 2019 - 9:28pm

Yes no probs i'll take some photos and start a thread.

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broady_6
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Re: IRS gearbox tool

Post by broady_6 » 8th January 2019 - 9:40pm

:D :D :D
The sultan of swing

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purplepeter
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Re: IRS gearbox tool

Post by purplepeter » 8th January 2019 - 10:24pm

Check the Detents Doug! I think you have to drill out the plugs

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Dave Summers
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Re: IRS gearbox tool

Post by Dave Summers » 9th January 2019 - 10:11pm

Gearboxes are pretty reliable so my suggestion would be to look for a secondhand one, although fixing it would be satisfying (and informative for the rest of us).
Dave
412 Variant
411 2-door saloon

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packers1712
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Location: Bedfordshire (nr Luton)

Re: IRS gearbox tool

Post by packers1712 » 9th January 2019 - 10:19pm

Peter I’m guess you’re referring to the shift rod plungers as they appear to be behind some aluminium pressed in plugs and as far as I can see all they are responsible for is retaining a selected gear in position and yes Dave as the only issue with my gearbox is its “crunching” when shifting from 3rd to 2nd I’m keen to repair it over buying an unknown quantity second hand unit!

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Editor
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Re: IRS gearbox tool

Post by Editor » 15th January 2019 - 11:52pm

I think crunching when changing down is most likely due to worn synchromesh cones. It can help to 'double de-clutch' with a bit of throttle while the pedal is up and the gear is in neutral. It can also be beneficial when synchro is worn to do the same when changing up, but without the throttle blip. It's sometimes called a racing change. You may be better to live with it and learn this gear changing technique.
Dave.

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