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Thread: Replacing rear wheel bearings - what tools for different bolt heads

  1. #1
    Senior Member Jag-Black's Avatar
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    Replacing rear wheel bearings - what tools for different bolt heads

    Hi gang, trust you are well.

    I have ordered some good branded replacement rear wheel bearings

    Also in the post is a long shaft Torx 40 as I'm expecting to find the old bearing assemblies attached by T40 bolts.

    I noticed that the bolts pictured with the replacements are not female T40 but male T40. It's not so clear in the image.

    It doesn't look like a socket could get in there?

    Has anyone had to fit these bolts, and what tools did the trick?

    Thanks for any pointers.


    What are these nasty BMW looking fixings eh?
    56 Jaguar X400 | 6 Speed Manual Transaxle - MMT6 | Series 60
    2.2L Duratorq 16V TC (150PS) - Puma | 4 Door Saloon
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    Senior Member x_type_lpg's Avatar
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    factory fit is normally female bolts and aftermarket male bolts, if you look at the holes on the hub one is larger than the rest and allows a 3/8" extension bar to pass through and engage the t drive.

    spray lots or oil on the threads from the back, and hope the abs sensor comes out easy and dont get stuck.
    Last edited by x_type_lpg; 09-11-18 at 18:51.

  3. #3
    Senior Member Jag-Black's Avatar
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    Quote Originally Posted by x_type_lpg View Post
    factory fit is normally female bolts and aftermarket male bolts, if you look at the holes on the hub one is larger than the rest and allows a 1/4" extension bar to pass through and engage the t drive.

    spray lots or oil on the threads from the back, and hope the abs sensor comes out easy and dont get stuck.
    Thank you. That is reasuring. Knowing an extension will fit throught one of the holes will be the solution. Thanks. I will take your advice.

  4. #4
    Senior Member FastEddie's Avatar
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    The new bolts are an E something , cannot remember the number as I normally just use socket caps.

    Give it all a good drowning in plus gas all around the round seating area of the centre hub as well as fasteners.

    As per previous message , the hole in the hub is for a short extension to fit through.



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    Senior Member rchiv's Avatar
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    I remember when i did mine that I had to file the larger hole a bit to allow the Halfords Professional 3/8" T socket to fit through. It was not required on the new one as the Female E socket is smaller in diameter and fitted without any problem.

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  8. #6
    Senior Member willowbob's Avatar
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    Quote Originally Posted by Jag-Black View Post
    Hi gang, trust you are well.

    I have ordered some good branded replacement rear wheel bearings

    Also in the post is a long shaft Torx 40 as I'm expecting to find the old bearing assemblies attached by T40 bolts.

    I noticed that the bolts pictured with the replacements are not female T40 but male T40. It's not so clear in the image.

    It doesn't look like a socket could get in there?

    Has anyone had to fit these bolts, and what tools did the trick?

    Thanks for any pointers.


    What are these nasty BMW looking fixings eh?
    I did mine not so long ago and, from memory, I think they are T50 Torx heads? I used a long extension T50 Torx socket, loads of penetrating fluid on the night before, heated them up with a blowlamp, then half a turn forward, more penetrating fluid, quarter turn back and so forth. If they 'round', (one of mine did) I used a set of rounded bolt removal socket tools on them, which did the trick. Try as hard as you can NOT to snap them in there! Good luck.
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  10. #7
    Senior Member Jag-Black's Avatar
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    Thank everyone for the feedback. I'm in two minds as to if I'm gonna do it myself. I'm not well practiced at these things so it could turn into a nightmare.

    Bearings arrive today.
    56 Jaguar X400 | 6 Speed Manual Transaxle - MMT6 | Series 60
    2.2L Duratorq 16V TC (150PS) - Puma | 4 Door Saloon
    Onboard Vapour Recovery System | Leather Steering Wheel
    Variable Intermittent Windscreen Wiper | Side Repeat Flashers

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