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Jimmy Two-Jacks

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Posts posted by Jimmy Two-Jacks

  1. Sounds to me like a pinon bearing problem... I've got a post on it somewhere, will see if I can find it. Have you felt for any laternal lay in the rear/front pinion flanges on the axles?

    If it is that then its the diff that needs changing not the axle. - with age, your transmission does get "loose" meaning between all the linkages you get play - add up all the play between the splined joints and gears you can get a lot of noise and nasty slapping when changing gear etc, but noise is mainly due to bearing play !Unless! you have some gear damage in which case they whine all the time and get slouder the faster you go. Pinon bearings in my experience get noisier when there is a change of power, i.e clutch engagment/disengagment...

    Found it: http://forums.lr4x4....wtopic=71797=

    Just for info,

    Taken from wikipedia: Definition of Backlash.

    "In mechanical engineering, backlash is the striking back of connected wheels in a piece of mechanism when pressure is applied. Another source defines it as the maximum distance through which one part of something can be moved without moving a connected part[1]. In the context of gears backlash, sometimes called lash or play, is clearance between mating components, or the amount of lost motion due to clearance or slackness when movement is reversed and contact is re-established. For example, in a pair of gears backlash is the amount of clearance between mated gear teeth.

    Theoretically, the backlash should be zero, but in actual practice some backlash must be allowed to prevent jamming. It is unavoidable for nearly all reversing mechanical couplings, although its effects can be negated. Depending on the application it may or may not be desirable. Reasons for requiring backlash include allowing for lubrication, manufacturing errors, deflection under load and thermal expansion."

    Thanks Mav,

    How can I find out, any tell tale signs its the pinion bearing I could look for?

    Cheers

    J

  2. How do.

    Could you elaborate on backlash noisy? backlash is imprtant when setting gears so they all have it - do you mean transmission noise, i.e. play when coming on and off the power?

    Mav

    Hi,

    The noise is a minor clunk when changing gear and releasing the clutch if I am clumsy but that I know is partly me :rolleyes: .

    The noise I am referring to is a sort of rumbling whirring rattle (difficult to explain) I thought it was my jate rings vibrating against the chassis at the rear to start with and the sound magnifying through the chassis section but no luck.

    This happens when I come off the power and start to slow down; it seems to be worse sometimes than others.

    Is backlash a sign of imminent failure or just an indicator of a worsening chronic problem?

    If imminent could I fit a TD5 Disco rear axle as there seems to be a load of those about at reasonable money?

    Cheers

    J

  3. Hi All,

    I thought things were going too well.... :(

    I am having what I think are back lash noises coming from the rear axle on my 200tdi 90.

    The axles I think are from a TD5 however I don’t know if the donor vehicle was a Disco or Defender that was pre my ownership. The question is can the problem be fixed and how bad/difficult/expensive is it to rectify? Or is it a case of replacing the axle? :o

    Cheers

    J

  4. Well on Sunday I fitted my new steering pump (ntc9070)and both drive belts while I was at it all went well and I even managed to stay dry lying underneath the 90 :i-m_so_happy: …Until I decided to increase the tension on the pump belt and one of the bloody silly tapering headed flange bolts rounded like it was made from Cheddar…bugger. However checking again the deflection, I think it’s right at about 10-12mm so no need to undo that bolt yet but I have just got some of those IRWIN Bolt-Grips and hope they will get the damned thing out.

    Why do they fit the pump with seemingly tapered headed bolts, the flange bit I can understand but tapering what’s that about?

  5. That looks very tidy. Mine seems to be constantly covered in oily hand prints and bird poo! Oh well I suppose it adds to the patina :rolleyes: .

    Just out of interest is the chassis very ropey then as the truck looks for as much as you can see from an image as if its been looked after?

  6. Mate I am in the same boat !!

    I have a list on my phone of all the jobs that need doing on my land rover everytime you get near the end more is added to the list !!

    I have owned my 90 for 4 years and the list has never been emptly

    There so much new stuff on her surely the work will stop one day !!

    If it did stop we wouldn't know what to do at the weekends :hysterical:
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