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Wheel bearing failure!

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    #31
    ‘Professional’ means a few things.
    1. someone makes a living out of it (often true)
    2. a company expected free overtime (sad but true)
    3. You expect unquestionable quality (optimistic usually)
    4. membership of a body / association that guarantees nothing. (Fact)
    5. Someone who cannot tell you the facts as they may face undesirable consequences if they do
    (Almost exclusively true)
    there may be more…. Sorry to say but the meaning of ‘professional’ has become a bit confusing these days & I try to avoid assuming it means what others might think.

    I’m surprised at the chris witor response so far…. Only ever had good parts from there.

    Richard, do any of the rollers appear to be non taper?

    As mentioned, in the bearing world there are a lot of copies and fakes sadly.

    It won’t repair your RBRR experience, but I’m sure a decent rebuild can be achieved without resorting to professionals or ‘snake oil’alternatives.

    Willing to lean in if I can be of assistance.

    Ive built a few, but only ever bought one rebuilt hub ( came from TDFitchetts) the fitchetts unit is still in active service & the ones I rebuilt too.

    If the cross section of the hub is studied, it appears that the spacer is redundant…. There appears to be a location for each race, 4 locations for 4 races.
    Unless triumph knew that a depth tolerance could not be achieved.

    My take fwiw is the hub needs to be assembled & preferably preloaded then run for an hour then re checked for preload.

    The taper has a very high capacity, so hubs should never be hydraulically split using huge forces as distortion is likely to occur at the flange & sharp spindle under cut.
    That’s perhaps a reason why expensive alternatives are being offered / sold / bought.
    Last edited by jbuckl; 22 October 2021, 00:29.

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      #32
      The flange needs to be supported ( the bit which takes the studs) with a purpose made plate that will stop the flange flexing and tightening on the shaft, see technical section. I used a 6 ton fly press. the original hub puller had a similar large flange built in to its design .
      "The UK,s 2nd Most Easterly Stag" Quad Exhaust- ZF 4 Speed BOX

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        #33
        Originally posted by jbuckl View Post

        Richard, do any of the rollers appear to be non taper?
        Unfortunately the rollers are so mangled that it's impossible to tell with any accuracy.

        My previous comment about the failed bearing being RHP is incorrect, it's actually a FAG branded bearing that failed. Difficult to tell because there is surface damage to the shell. Either way, it's not a Timken as was advertised.
        Last edited by mole42; 22 October 2021, 09:18.
        Richard
        Mabel is a white 1972 Mk1½, TV8, Mo/d.

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          #34
          My brothers car the wheel bearing has failed today,

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            #35
            Originally posted by new to this View Post
            My brothers car the wheel bearing has failed today,
            Front/ rear / stag? Does he need help?

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              #36
              Originally posted by jbuckl View Post

              Front/ rear / stag? Does he need help?
              Its the rear wheel bearing,he had bought recon rear hubs,( the original ones ) but there out of warranty,not done a lot of miles it looks like the woodruff key has broken away from the yoke, which made the lock nut come undone

              I noticed these hubs have nyloc nuts didnt the original ones have castle nut with split pin ?

              Dave

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                #37
                Originally posted by mole42 View Post

                Unfortunately the rollers are so mangled that it's impossible to tell with any accuracy.

                My previous comment about the failed bearing being RHP is incorrect, it's actually a FAG branded bearing that failed. Difficult to tell because there is surface damage to the shell. Either way, it's not a Timken as was advertised.
                Richard did you get anywhere with the supplier?

                Martin
                "The UK,s 2nd Most Easterly Stag" Quad Exhaust- ZF 4 Speed BOX

                Comment


                  #38
                  Originally posted by MandM View Post

                  Richard did you get anywhere with the supplier?

                  Martin
                  Hi Martin,

                  Eventually he admitted that he had rebuilt the hub himself using a NOS Unipart bearing kit without checking the bearings. He also said that if I sent the failed one back to him he would rebuild it. I had already bought new Timken bearings and split the hub, so decided against sending it back.
                  Richard
                  Mabel is a white 1972 Mk1½, TV8, Mo/d.

                  Comment


                    #39
                    Originally posted by mole42 View Post

                    Hi Martin,

                    Eventually he admitted that he had rebuilt the hub himself using a NOS Unipart bearing kit without checking the bearings. He also said that if I sent the failed one back to him he would rebuild it. I had already bought new Timken bearings and split the hub, so decided against sending it back.
                    is it going around more ‘smoovlier’ now?
                    imho build them up yourself. If you can’t, buy the ccd or similar parts. Cost difference is pretty big though.
                    chris witor shafts seem to be a very good option for replacing worn splines though.

                    imho splitting the taper apart with a 50+ tonne press is the cause of damage that people have mentioned regarding these original bearing assemblies.

                    B.T.W. Still got me coat on…. Literally these days!

                    P.S. These units could do with ‘running up’ for an hour before final setting of the locknut. Apparently that’s what TD fitchetts do. Sounds sensible.
                    Last edited by jbuckl; 11 April 2022, 23:03.

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