Rear hub nut size socket
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Thread: Rear hub nut size socket

  1. #1
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    Default Rear hub nut size socket

    Hi all, can someone please advise the socket size for the rear hub nut on a 405/MI16.

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    Geoff

  2. #2
    1000+ Posts pgti6's Avatar
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    30 x 1.5mm
    Track car-Steel Grey 405 Mi16 2.2 litre


    405 Track car build thread moved to-
    http://forum.205gtidrivers.com/index...ic=143279&st=0

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    Nope - definitely not 30. I measured roughly using a ruler and the nut is at least 40mm across, but don't have verniers to check exactly.

    Its a S1/15B by the way.

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    I need to remove the nut - hence the need for a socket drive.

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    Contented Peugeot Driver addo's Avatar
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    I think you may have been given the thread size.
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    also found out today (of course) that the front and rear socket size required is different. if someone also knows, please also need the socket size to remove front CV's.

    Geoff

  7. #7
    1000+ Posts PeterT's Avatar
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    Front 35mm, I thought the rear was either 30 or 32mm.

    '92 205 Mi16
    '90 Mi16x4

  8. #8
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    For those interested, rear 40mm and front 35mm on a MI16, 15B, 405 with Bosch ABS. Can get 3/4" drive sockets in these sizes from United Tools and a 500mm length, 3/4" driver TTI solid breaker bar for $30 from Total Tools.

  9. #9
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    35mm I can understand. It's the old French standard from 1930 for a 22mm thread. Replaced for a while by 32 but now standardised on 34. The rear hub nuts on a DS are 35mm.

    But 40 does not make sense to me. Are you sure it is 40? 40 appears in no standard I know. The old French standard for 27mm threads was 42 across the flats. Since replaced by 41. The next lowest in the list I have is 38, the old French standard for 24mm threads.

    For a 30mm thread, all standards use 46mm across flats.

    Roger

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    1000+ Posts bluey504's Avatar
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    Automotive manufacturers have always played 'fast and loose' with the bolt/nut size rules. Japanese M8 bolts typically have a 12mm flat size. Peugeot made there own nuts and bolts for decades and even then they would do 'fun' things like make the thread neither course or fine but midway. (504 lower damper bolts as a quick example. IIRC)
    As these nuts are on hubs they are most likely flange faced and stepped down in the flat size due to space restrictions. Also it means that you are forced to buy nut from the Parts division at Bloody Great Expense.
    Brendan.

  11. #11
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    Peugeot exhaust M8s are 12, most others are 13 except for pre 1965 models where they were 14.

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    1000+ Posts PeterT's Avatar
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    I've never used a 12mm spanner on a Peugeot.

    '92 205 Mi16
    '90 Mi16x4

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    Fellow Frogger! Mungous's Avatar
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    I pulled a BX 16v apart the other day. Used pretty much every size spanner from 7mm-21mm except 15mm and 20mm.

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    Used to be common for 7mm threads on pre 1965 cars.

    Quote Originally Posted by PeterT View Post
    I've never used a 12mm spanner on a Peugeot.

  15. #15
    1000+ Posts PeterT's Avatar
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    Yeah, but that's not an M8.

    '92 205 Mi16
    '90 Mi16x4

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    The M8 12mm nuts were used on the RWD Peugeot exhaust manifolds.
    Of course some of the FWD cars have a really strange one on their exhausts, M8 with 10mm nuts.

    Quote Originally Posted by PeterT View Post
    Yeah, but that's not an M8.

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    Quote Originally Posted by Mungous View Post
    I pulled a BX 16v apart the other day. Used pretty much every size spanner from 7mm-21mm except 15mm and 20mm.
    AGREE!!! I've pretty much pulled off every nut and bolt across rear end, brakes, suspension, engine mounts, sump getting my MI16 up to Targa spec and my poor tool sets are strewn around the garage floor like a tornado has gone through!

    Very frustrating the pug sizings - but good to know ive finally christened all my Metric tools after working on 60's Holdens.

    Geoff
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  18. #18
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    For those that said a 40mm rear nut on the hub was strange, certainly - it is. This was factory from Peugeot. Had a hard time finding a 40mm socket.

    Anyway - put the new hubs on tonight at the back (FAG - delivered from EU) and would you beleive that 40mm sockets must be hard to find in Europe also - so FAG have used a 41mm nut - which ironically, you can get a 41mm socket from total tools, supercrap, etc!

    Fantastic - apart from the fact that I now have a 40mm socket and not a 41mm socket......

    GT
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  19. #19
    Contented Peugeot Driver addo's Avatar
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    1 5/8" - simple interchange.

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