956XL Rear axle seal

Discussion in 'Classic Machinery' started by Arthur Living, Jan 16, 2017.

  1. Arthur Living

    Arthur Living Member

    Location:
    cambridgeshire
    Hi there,

    Was using my 956 today and I noticed the smell of gear oil. Climbed out to have a look and found the rear rim covered in oil. The axle seal has obviously gone but what looks to be a steel ring on around the axle end is also torn and pushed outwards.

    Is it just the seal gone or has something internal tried escaping? Seems pretty tough metal for that to happen to.

    Guess I have to remove the trumpet housing and dismantle the final drive to get to the seal so I will probably find out on the way. Just dreading having it apart!

    Just wondered if anyone has had similar happen as there hadn't been a hint of oil around it before.
     
  2. Dave W

    Dave W Member

    Location:
    chesterfield
    It's simple enough.
    Trumpet off and I think there's a big nut that holds the half shaft in. Everything slides out once it's off.
    As you say the steel ring coming out will be self explanatory once you're in.
     
  3. I would hazard a guess that the bearing has collapsed? Best to strip it now no big deal to do really, check the brakes when you are at it (both sides as 1 side wears more than the other and I can,t remember which side) as you have the oil drained and jacked up anyway.
     
  4. Mursal

    Mursal Member

    Pull the top of the wheel in and out, before you take it off, bit of leverage to get the lift in the bearing.
     
  5. massey765

    massey765 Member

    Location:
    nr clitheroe lancs
    Back in the day we did a lot of road work with a 956 and it did a few wheel bearings ..... if memory serves it did the seal aswell and that was the clew to the bearing going
     
  6. Gapples

    Gapples Member

    Aye trumpet housing off, there is an awkward circlip holds the half shafts in, there is a special tool ( fancy circlip pliers ) for removing the clip.
    But it can be picked out with screwdrivers, then off with the epicyclic unit & beat out the half shaft.
    Cut the outer bearing off & you then access the seal.
    Clean up the seal runner area on the shaft, pop the new seal on, warm the new bearing in a bearing oven ( yeah right, we all have bearing ovens or induction heaters lol ) but anyway warm up the bearing & fit.
    Drop half shaft into housing, the hub pushes the seal into place, you'll see what I mean when doing the job & then back together after cleaning off old gasket sealer & applying new.
     
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  7. Mursal

    Mursal Member

    Is there shiims to thrust the bearings or what?
     
  8. milkloss

    milkloss Member

    Location:
    East Sussex
    Good timing! We've got a 2wd 956xl with a leaky axle seal standing about. Do the trumpets have gear oil in or hytran running in from the backend?

    Can the seals be replaced without the bearing or perhaps its either not worth the hassle or risk and just do the bearing anyway?

    Thanks chaps.
     
  9. Badshot

    Badshot Member

    Location:
    Kent
    Lol I've got the 856xl to do too. It's gear oil AFAIK, the hydraulic system is separate.
     
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  10. milkloss

    milkloss Member

    Location:
    East Sussex
    Ah, so they're the plugs on the trumpets I guess :facepalm:
     
  11. Mursal

    Mursal Member

    If only a weeping seal, check the vent isn't blocked ...........
     
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  12. Gapples

    Gapples Member

    No shims, they are large ball bearings not taper.
     
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  13. Gapples

    Gapples Member

    Gear oil, the rear axles are separate from the main transmission, back to back oil seals.
     
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  14. Arthur Living

    Arthur Living Member

    Location:
    cambridgeshire
    Brilliant, thanks for all the replies.

    Looks like I am going to have to get brave!!
     
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  15. Muck Spreader

    Muck Spreader Member

    Location:
    Limousin
    I would definitely check this out first. I had a similar situation with our 956 about 6 years ago, poke a bit of wire up it if necessary.
     
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  16. Badshot

    Badshot Member

    Location:
    Kent
    DSC_0269.JPG DSC_0270.JPG DSC_0271.JPG
    Not bad to get this far, the half shaft is reluctant, but after lunch I'll get it moved I'm sure.
     
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  17. Muck Spreader

    Muck Spreader Member

    Location:
    Limousin
  18. Gapples

    Gapples Member

  19. Badshot

    Badshot Member

    Location:
    Kent
    Off the trumpet? It came off the tractor easy. There's no gasket there, is it just squirty gasket used to seal it?
    Just looking to get new bearings and seal now.
     
  20. Badshot

    Badshot Member

    Location:
    Kent
    There was oil leaking from the half shaft, when jacked up you could see the play in the bearing too and it had made a few nasty noises last time I used it.
    So new bearings and seal is the order of the day.
    The outer bearing was hellish tight in the shaft.
     
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