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Thread: SIII 6 cylinder Clunking in reverse!!

  1. 19th October 2014, 10:19 AM #1
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    jasiah
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    SIII 6 cylinder Clunking in reverse!!

    Hey all,

    My landy gearbox sounds like its on the way out.

    A horrible clunking noise comes from the gearbox while reversing, under load (clutch pedal out) the clunking is very apparent, clutch in, clunk is there but a lot quieter.

    I thought it may be the handbrake binding but the shoes/handbrake looks good, unless there is more to it i'm not seeing.

    Any ideas?
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  2. 19th October 2014, 10:32 AM #2
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    SIII 6 cylinder Clunking in reverse!!

    Usually a chipped reverse gear
    I used to just ignore mine
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  3. 19th October 2014, 10:37 AM #3
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    jasiah
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    Thanks, I drained the gearbox oil and a tooth came out. Would that one tooth cause the really loud clunking noise? or could there be more damage? All forward gears are fine.
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  4. 19th October 2014, 03:10 PM #4
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    Mine did the same thing. It's undergoing a full resto now, but I haven't got around to stripping the box down yet, I'm guessing I'll find something similar.
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.
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  5. 19th October 2014, 04:20 PM #5
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    JDNSW
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    Quote Originally Posted by jasiah View Post
    Thanks, I drained the gearbox oil and a tooth came out. Would that one tooth cause the really loud clunking noise? ......
    Yes, it could and probably would. All gears except reverse are constant mesh, so that tooth will be from a gear used only for reverse.

    John
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol
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  6. 19th October 2014, 06:17 PM #6
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    Bugger!

    So looking like a rebuild hopefully this isn't too hard.

    Is a gearbox rebuild better left to the experts? If not, where do you guys purchase your parts from?
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  7. 26th October 2014, 02:59 PM #7
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    Might be best from the UK although I do find all 4x4 in Newcastle to be good
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  8. 28th October 2014, 10:31 PM #8
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    Mine does the same thing. I found a tooth once when changing the oil in the gearbox as well.
    Also sometimes I know it's the handbrake binding up because I left it slightly on. I reach down and grab the handle then shake my head
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