tight bearing seals?

Discussion in 'Mech Tech' started by Diddymen, Apr 23, 2013.

  1. just been assembling my rear hub, once the drive shafts were installed and the hub nut was tightened the whole lot wouldnt rotate :(

    I took it apart and the dust seals came out on the shaft.....and I couldnt rotate them on the shaft !!

    so I reassembled with out the seals and it all rotates (hub nut not on at this point)

    the seals were different to the ones on the other side so could they be a stiffer rubber?

    ......any one else had similar problems???
     
  2. Zed

    Zed Gradually getting grumpier

    Did you grease them/shaft?
    But no, never, sounds wierd.
     
  3. admittedly not greased the shaft, gave the inside of the seal a coating

    ......thought it might have been the bearing, but with the half shaft inserted without seals it turns fine :confused:

    wondering f they gve me the wrong seals, but I suppose all years have the same diameter shafts? ......I'll buy the same as the other side from GSF as I know they were fine
     
  4. You did have problems with bearings I seem to remember , seals are just a lip and won't stop shaft rotating , are they the blue ones from GSF . Sounds iffy to me
     
  5. That is most odd. I can't imagine grease seals stopping the shaft turning. Did you torque the nut up when you'd taken the seal out? Still turned ok?

    Only thing I can think of is the seals collapsing somehow with the nut done up. Sure it's not the bearings when the nut's tight?
     
  6. still not 100% sure its the seals as I had not tightened up the nut with out the seals on (think it started to cross thread so will have to clean up with a thread file)

    the seals were black ones from Heritage.

    seals on the other side were the blue ones from GSF which I didnt have the problem with ....and the other side was where I had the bearing problem (needed to be put in with a press) .....I pressed the outer bearing in on this side too

    reason I thought it was the seals, was that it was hard to get the inner shaft fully in when it got to the seal, while rotating to check I could hear the seal rubbing and squeeking. Once the outer part of the shaft went on, I needed to do the nut up to get the outer past the seal......and when I removed it all again the outer seal came off with the shaft and was hard on there and I couldnt rotate the seal on the shaft by hand :confused: ........with both seals on and nut tight the half shaft would not rotate with out a lot of force :(

    ......I'll get some seals from GSF after work and have another play and report back
     
  7. Let us know if the newies are better. All very odd...
     
  8. would of said the Hertage ones were better ,but i have the blue ones and they are fine . The shaft needed a tap to get fully home with a mallet . slightly worring if you have started to cross thread the nut as you know they need to be torqued up to 6billion lbsft .

    my money`s on the bearings ....
     
  9. This, I think. My shafts also needed a tap with a mallet to get them through (I assume) the bearing inners.
     
  10. sorted !!!

    it was only the first thread that was the problem not cross threaded in the end.....frustration and lack of humour last night saw me gently tap the drive shaft out by hitting the end with a hammer (and dinging the first thread :oops: ) ....all sorted with a tickle from a thread file

    ......conclusion














    bearing seals :confused:

    I stripped it all apart again, fitted 2 new blue dust seals from GSF (same as other side) reassembled again and tightened the hub nut and all is well :)

    cant figure it out :confused: ....each time I fitted it, I had done so, the way I always have.....didnt do any thing any different when I had the other dust seals on :confused:.....and nothing (including the way I put it together) changed except the dust seals

    unfortunatly I didnt measure the new seals to compare....but if I get time I will measure the old ones (if any one has the blue GSF ones I'd be interested in the measurements for comparison)

    only thing I can assume is that the black seals might have had a smaller internal diameter, were stiffer or thicker causing them to compress more and cause excessive friction.
     

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