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Thread: CLUNKY AUTO

  1. 21st March 2014, 06:55 PM #1
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    CLUNKY AUTO

    Hey guys my 93 V8 disco lost reverse gear about 2 weeks ago so i fitted a recon auto box. went to pick the kids up from swimming and noticed a loud clunking sound when i put it into reverse or when i put it drive it also clunks when i slow down below 50kph. It changes up and down smoothly and kicks down under hard throttle smoothly.So i dont think the box is the drama. My gut feeling is the ball joint on top of the diff just thought i would throw it open to more suggestions or ideas before i crawl under the disco in the morning. thanks guys
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  2. 21st March 2014, 08:00 PM #2
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    Uni joints? Diff lash?
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.
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  3. 21st March 2014, 08:27 PM #3
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    Quote Originally Posted by bacicat View Post
    Uni joints? Diff lash?
    I changed the uni when i swaped out the slush box how do check diff lash?
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  4. 21st March 2014, 08:33 PM #4
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    Not sure on the correct way, but if you have a clunk in your diff, jacking up one wheel and rocking the wheel will make it make a noise if its that. Do a back wheel first, then a front. You will be able to feel the normal play in the diff and the transfer case, but listen for some bad clunking. Any of the diff pinion seal leaking? That may show some play in the pinion bearings. Long shot, but I'm just thinking of stuff out loud...
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.
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  5. 21st March 2014, 08:44 PM #5
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    Quote Originally Posted by bacicat View Post
    Not sure on the correct way, but if you have a clunk in your diff, jacking up one wheel and rocking the wheel will make it make a noise if its that. Do a back wheel first, then a front. You will be able to feel the normal play in the diff and the transfer case, but listen for some bad clunking. Any of the diff pinion seal leaking? That may show some play in the pinion bearings. Long shot, but I'm just thinking of stuff out loud...
    All good info well worth the try thanks mate do you think that ball joint on top of the diff would make it clunk?
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  6. 21st March 2014, 09:17 PM #6
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    Not sure - I would have thought it would clunk more going over bumps if that was stuffed rather than on and off the throttle, but worth a look.
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.
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  7. 21st March 2014, 09:34 PM #7
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    thanks for all the ideas plenty to look at
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  8. 23rd March 2014, 12:40 PM #8
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    Is the Auto kickdown cable adjusted correctly, it controls pressure and gear changes, Regards Frank.
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  9. 23rd March 2014, 02:21 PM #9
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    Quote Originally Posted by Tank View Post
    Is the Auto kickdown cable adjusted correctly, it controls pressure and gear changes, Regards Frank.
    Not sure what is the correct tension?
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  10. 23rd March 2014, 04:50 PM #10
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    Quote Originally Posted by disco man View Post
    Not sure what is the correct tension?
    You will need a Workshop manual or Daves' Rave Disk, it's not tension that is measured, there is a marker on the cable and it has to be set at the correct measurement, Regards Frank.
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