noise when changing gear on defender 98

[nick howes]

I am looking at a 1998 300tdi defender 90, 59500 miles, however when i test drove it there is a whining/whistle sound that comes from somewhere below when the clutch is depressed at each gear change--this noise gradually dies down and stops if i keep the clutch down but keep rolling. it also stops when we engage the next gear and release the clutch. We thought it might be the release bearing but we replaced the whole clutch inc bearing and it still is there ? Any ideas please.

[Disco Mike]

Sounds like a dry throw out bearing.
Mike J.

[TerryS]

I agree with Mike J that it sounds like your throwout bearing, but it's odd that the noise is still there after putting in a new one. It's too bad it's such a PITA to change them since they're so cheap. When it was apart was the throwout arm pivot inspected? If the pivot is badly worn, it can make the throwout bearing come up on an angle, rather than straight in.

I have also heard worn pilot busings make noise, but not a whistle/whine noise.

[nick howes]

Originally Posted by Disco Mike

Sounds like a dry throw out bearing.
Mike J.

Thanks Mike--by throwout bearing do you mean thrust/release bearing?--I`m a brit-we talk funny over here !!