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Thread: pinion depth/backlash english diff cwp rebuild tips and info

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    Re: pinion depth/backlash english diff cwp rebuild tips and info

    I thought old bolts as I did not renew on rebuild I will probably wire them up this time also

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    Re: pinion depth/backlash english diff cwp rebuild tips and info

    no point in wiring them, wiring wont stop bolts shearing

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    Re: pinion depth/backlash english diff cwp rebuild tips and info

    Apologies for resurrecting this old thread. I am about to fit a new CW&P to my Elan (same diff as Cortina) and wondered how to estimate the thickness of the shim under the pinion rear bearing. I got the ring and pinion from Burtons and there are numbers scribed on it-do they indicate shim thickness? Many thanks for any and all assistance.
    (Graham-was it you supplied me with ZF parts?)

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    Re: pinion depth/backlash english diff cwp rebuild tips and info

    wasnt me how suppied ZF parts.

    my recollection is that its the casing which dictates the shim thickness

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    Re: pinion depth/backlash english diff cwp rebuild tips and info

    i was just hoping you could give me some figures so can do mine. A mate of mine says he can do it for me but needs to know the pinion depth and any measurments we might need. hes been trying to buy a churchill tool for years but can never find one.
    i hope you can help
    thanks
    trev

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    Re: pinion depth/backlash english diff cwp rebuild tips and info

    hi i see this is an old thread but i was just hoping you could give me some figures so can do mine. A mate of mine says he can do it for me but needs to know the pinion depth and any measurments we might need. hes been trying to buy a churchill tool for years but can never find one.
    i hope you can help
    thanks
    trev

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    Re: pinion depth/backlash english diff

    I'm about to change my diff unit, and I was wondering exactly how to calculate the preload, thinking about this post it look like way too much weight to just rotate the pinion without ring gear. Am I wrong? 10lb at 2 inches are 4,5kg at 50mm, it's not too much? Mine after like 1000km is about 0.3kg at 50mm, and it seems already pretty heavy to rotate. Can someone enlighten me?
    Thanks.
    Last edited by Enea; 15-11-2019 at 05:03.

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    Re: pinion depth/backlash english diff

    Quote Originally Posted by Graham View Post
    yes fossie your right i should of typed lbs.in,

    in other words if you have your spring balence attached 1 inch away fro the centre of the pinion it should take a pull of 20-26lb to rotate it, if you are using the holes on the prop flange you will need to do some maths to work out how hard to pull, i.e if the flange hole is 2 inch from the pinion center then you would have 10-13lb pull
    This is the post...

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