our zanussi tumble dryer is giving us trouble at the moment?

Ravi,

There is quite a lot of advice on

http://www.howtomendit.com/answers/0000021.htm

But you probably ought to post the model number.

I'd check the following...
(1) The belt is following the right route around the jockey wheel and motor axle. I believe this varies by model.
(2) The jockey wheel is probably sprung to achieve belt tensioning - it might be that the spring has come off.
(3) That you have the correct belt (Zanussi has at least three different lengths).
See http://shop.ezee-fix.co.uk/
Ezee_FixSparesShop12_Zanussi_343.html

BobG
February 2004