Vehicle & Technical > Defender

gearbox noise

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bogie:
ITS A LANDROVER,IF IT WORKS LEAVE IT,IF IT BREAKS FIX IT!!!!

andygod:
I've changed the oil in the diffs and topped up the oil in the main and transfer boxes, I've still got the noise and its happening most of the time whilst accelerating and cruising. It's not a grinding noise but more of a loud hum, it gets slightly louder as the engine speed increases upon acceleration. The noise stops if I press the clutch and also stop[s if I press the clutch slightly in while accelerating.  Have you any ideas please. I've only just moved over to owning a diesel Defender after owning V8 Range Rovers & Discovery's for years.

Andygod

trecfive:

--- Quote from: trecfive on December 15, 2009, 14:45:38 ---If you press the clutch and the noise goes,thrust bearing or input shaft bearing springs to mind.

--- End quote ---

Andy
--- Quote from: andygod on December 16, 2009, 08:37:32 ---It's not a grinding noise but more of a loud hum, it gets slightly louder as the engine speed increases upon acceleration. The noise stops if I press the clutch and also stop[s if I press the clutch slightly in while accelerating.

Andygod

--- End quote ---

CLUTCH-PRESS-NOISE- GOES=Nut behind the wheel not listening

Engine turning faster=noise getting louder,thrust bearing turning faster. Are we getting warm yet,press clutch and noise goes,jackpot

andygod:
Sorry I know I may sound stupid :doh: but bare with me and I'll get there in the end :D I've spent the past 15 years owning 4 x 4's with auto boxes so I'm not very knowledgeable about manual boxes. If either the thrust bearing or the input bearing has gone what do I have to do next i.e. renew clutch, renew gearbox etc. How long approx do these things last after they start making a noise, will it just fail all of sudden or will the noise just get worse. Any advice would be most welcome. [-o<

Andy

trecfive:
The input bearing usually just gets louder with a bit of vibration before it fails. The thrust bearing gets very noisier then starts to squeal all the time(thats what happened to mine) it wont just let go, it will tell you as it gets worse. Gearbox out I'm afraid to cure.

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