There are two types of ac motor found in the 4000 (I am not aware of more) one of them I think can be pulled apart the other cannot without drilling even then I am I wouldn't risk it. Either way you can get oil to both top and bottom bearings which is the major issue with the servo motor - you can't really access either bearing, one is completely covered while the other is effectively covered by a washer. smaller motor benefit much more anyway.

With the platter motors I tend to apply oil to both ends and run for a while just make sure non gets anywhere near the belt path.

I missed thate Jacques yeah must admit many moons ago I tried a rubber band I was desperate though and it never worked of course! I think they are designed to decompose fairly rapidly but not sure if they go all gooey!

chartz wrote:

Like Olly, I doubt the belt alone could be responsible for the rattle.

What is that green stuff you saw inside? Was the belt green?

Looks like somebody 'fixed' the deck with an old office rubber band!😂

Sorry i should have been clearer, the green all over the insidde was bits of the decayed band. Ive attached a pic of what it was like, although i had removed the green bits by then.

Is it easy to get replacement belts locally or should i enquire via this site?

http://i1042.photobucket.com/albums/b424/ifoldaway/Green-band.jpg

Funny, it looks like a meccano or lego belt...