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Thread: LT 95 Overdrive

  1. #1
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    LT 95 Overdrive

    The overdrive on my LT95 works fine but is starting to get a bit noisy when overdrive is in. When overdrive is out noise levels are fine so I assume that the bearings that the components run on when O/D is engaged are getting worn while the others are still fine.

    I appreciate some parts are available for a series O/D from the US but LT95 o/ds are more problematic.

    Has anyone replaced the bearings in their LT95 O/d and where did you get them from.

    Cheers

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1976 Jaguar XJ12C
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

  2. #2
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    No one had a play with the insides of their overdrives??
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1976 Jaguar XJ12C
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

  3. #3
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    Sigh, I am not a great example as mine was noisy.
    The greatest wear area in a Fairey LT95 is the bearings between the inner and outer shaft. There are AFAIR 2 sets of needle rollers and these wear into the shaft inside surface. ( brinneling)
    My Czech engineer friend was able to locate roller bearings at CBC AFAIR that were caged with their own outer track and exactly the same OD and ID.
    The other big wear area is the thrust washer at the base of the shafts. Again my friend turned up a thrust washer from that oily bush brass stuff.

    The actual bearings inside the Fairey are LT95 gearbox bearings so easily obtainable, but probably are not worn out. Unless the gears are damaged, that is about all you can do, and of course if the gears are damaged then you cannot get new ones.
    However most of the problems are caused by the little bearings in the input and output shafts.
    I had a schematic about 20 years ago, but it really doesn't help as you cannot get bits anyway AFAIK.

    Regards Philip A

  4. #4
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    Thanks Philip - I guess anything is possible. From what you say the main issue is the brindling of the shaft - as you indicated replacing the bearing with one that has its own inner race might be the go.

    As I said just starting to get noisy in O/D but OK when not engaged. When I put my Hi speed transfer case gears in I might pull the O/d out and have a play.

    Cheers

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1976 Jaguar XJ12C
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

  5. #5
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    as you indicated replacing the bearing with one that has its own inner race
    might be the go.
    Its the outer race of the bearing that is required as the wear is on the inner surface of the shaft , which the bearing runs on. This in the opinion of my czech friend was a very difficult /expensive problem and the needle rollers with their own outer track was an elegant solution.
    Regards Philip A

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