Vehicle & Technical > Defender

transmision clunk

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land-def-90:
hi have yet another little prob on my 200tdi defender it started ages ago and has got gradually worse. if you put it in reverse and let the clutch out you hear a clunk..clunk noise the same happens when driving and taking your foot off the throttle. it sounds as if it from the transfer box but have been told it could be play in the diffs, there is about a 1/4 of a turn of play on both props. any ideas how to isolate prob before i start an expensive process of elimination, your comments would be apprecated....Iain

Tinks:
I'd bet diff's before transfer box!
Just take of props and tighten / check torque of the pinion bolt.
Check the bearings etc.

If thats all alright then you've eliminated one problem and not spent a penny!!! :D  :D

Jim-Willy:
Mine has a slight clunk from the tranny and the front diff but a wrecked u/j can cause the same noise, i had awful clunk until last week when the back u/j on the front prop was replaced, it was booogered, worth a check.....  If it is the diff or transfer box or both theres not a lot you can do really just live with it till it gets really bad then refurb / replace.......

land-def-90:
thanks for that chaps all makes sense and will be investigated..... just one thing what is pinion bolt and how do i check / tighten it  thanks for your swift reply Iain

extreme90:
a loose or worn rear a-frame ball joint can also cause a clunk, as can worn chassis-trailing arm mount bushes
also the front radius arm-axle bush's will cause a clunk when taking up drive and going onto over run and vice versa

but if you say it clunk's when going into reverese, id say its the backlash in the diffs and transfer box fue to ware and tare, and is nuffing to worry about  :wink:

just check them bush's tho and the rear a-frame ball joint

dan

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