wammers said:

Get the correct one and fit it properly, if you lose that one you really do need to be looking at the compressor.

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JohnnyCrash said:

Thanks wammers and I am getting the correct one? 2 sizes are listed for the 2.5 and it doesn't matter as both will fit you just move the tension wheel as it can be located in 2 different locations.

I have just recently replaced the pump as my original was knackered :-(

everything is in line - but I just don't know why this keeps happening??

anyway, new belt on order - lets see what happens

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wammers said:

When you fitted the new pump you did of course make sure it was charged with oil. There has to be oil in the dead side of the pump as well as oil in the refrigerant.

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Speedex750 said:

Mr Crash,

I've had similar problems of belt throwing. Read this thread for where I'm at so far with an alternative belt size.

http://www.landyzone.co.uk/lz/f10/part-number-aircon-belt-189731.html

Next likely cause is a non-concentric pulley through the crankshaft damper. I've heard new pulley's are expensive and it doesn't look a breeze to change so I've fingers crossed the stretch 830/850 belt keeps working.

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