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Thread: Whats wrong with Puma rear diffs

  1. 11th December 2010, 03:24 PM #1
    skoller
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    Whats wrong with Puma rear diffs

    I have had my rear diff replaced 3 times and it needs to be done again.A report has gone into LR from the dealer,so I await the reply.Two of the diffs didnt even last till I got home which is 50 k from the dealers.
    Whats wrong with them ,are they special.Its not as if they have to design something new,they are on every vehicle in the world.
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  2. 11th December 2010, 04:15 PM #2
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    Barra1
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    P38 Diff which was also fitted to the late model TD5s.

    My first diff lasted 8K's, the next was replaced at 60K's and finally at 100K's I had had enough

    A Salisbury diff was sourced and fitted. End of story.
    http://i271.photobucket.com/albums/j...KevsAvatar.jpg
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  3. 11th December 2010, 04:29 PM #3
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    Tikirocker
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    I spoke to a Landy mechanic about this a few weeks back ... he was lamenting the horrid diffs in the late models and praising my rear Salisbury. I don't get why companies go backwards in the engineering stakes ... but then again I guess it creates a thriving parts industry if you do!

    Simon.
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  4. 11th December 2010, 04:48 PM #4
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    Blknight.aus
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    typical crap "not the parent company so not going to hurt the name" standards of production.

    It was produced and quality controlled by an american company, expect american quality control.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

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  5. 11th December 2010, 05:16 PM #5
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    TimNZ
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    I'd be pushing them to replace the entire axle assembly, especially if you are having trouble with excessive wear on the axle splines and drive flanges, indicating the axle casing could be our of "true".
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  6. 11th December 2010, 05:20 PM #6
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    justinc
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    I have converted a few now to sals rear. Cheaper than repairing the original one a few times, and a direct bolt in but you will need to source the tailshaft to suit also. If you have a 110, with ABS etc, you will need an ABS compatible Sals, 1999 to 2002 Def.

    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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  7. 11th December 2010, 06:25 PM #7
    jake
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    G'day,

    Reading the posts can someone tell me the symtons that trigger a problem with the Puma Diffs.

    Jake
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  8. 11th December 2010, 06:31 PM #8
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    justinc
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    Pinion leaks, noises on and off the throttle, worst case broken crownwheel teeth. Did I mention pinion leaks???

    The theory of fitting a lighter, 4 pinion differential is sound, its just a pity these diffs are so problematic.

    The Sals is heavy, a plough, and overengineered, but at least it is reliable.

    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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  9. 11th December 2010, 06:43 PM #9
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    Blknight.aus
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    ^^ all a what he said.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.
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  10. 11th December 2010, 06:50 PM #10
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    justinc
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    Just to better answer the OP, the issue as I see it with these diffs is the crownwheel thickness, it is quite a bit thinner than the Rover differentials and thereby under heavy loads it will deflect away from the pinion, causing all the problems with eventual pinion bearing and tooth failures.
    Pegging with be a solution, but why should we have to work on a 'new' differential???

    Therein the Sals is the answer


    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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