16 replies to this topic

[cal844]

Hi folks
Long story short my fan belt snapped yesterday, the AA bodged a belt on but I need the correct length.

998 A plus manual transmission. I'm unsure of pulley sizes that are on the car.

Many thanks

Cal

[GraemeC]

Did you manage to save the old one - it'll be marked or you can measure it. Or you could wrap some string/rope/wire around the pulleys and measure that.

 

Failing that, put up a pic of your water pump pulley, but its probably a GCB10838 you need.

Edited by GraemeC, 12 April 2021 - 08:09 AM.

[cal844]

I'll get an image up shortly, the belt that was on the car was binned by the AA guy, there wasn't any marks on it

[Ethel]

Was it "cogged" or smooth? There may be witness marks on the pulley if you're not sure.

 

You should be able to get the 825mm belt to fit, even if you have to unbolt the alternator to thread it on.

[cal844]

Was it "cogged" or smooth? There may be witness marks on the pulley if your not sure.

You should be able to get the 825mm belt to fit, even if you have to unbolt the alternator to thread it on.

It was a cogged belt but they were almost smooth

[cal844]

Pic of fan pulley (is this the standard A+ pulley or the larger one?)


IMG_20210412_093526 by Calum Michie, on Flickr

[GraemeC]

That looks to be one of the smaller ones, most likely CAM116

Edited by GraemeC, 12 April 2021 - 09:37 AM.

[richmondclassicsnorthwales]

Maybe this will help getting the correct belt

 

 

http://www.minispare.../FAN BELTS.aspx

[Cooperman]

Best to measure it to be sure.

Get a piece of washing line and put it in the place the fan belt goes and pull it tight around the pulleys.  Set the alternator about mid-way of its available travel. The correct fan belt length is the length of the rope from beginning to where it meets in mm.

Edited by Cooperman, 12 April 2021 - 09:04 PM.

[cal844]

I've got one from a local parts supplier, 825 is the number on the packet so we shall see how good it fits, according to thier system there isn't any other choices

[Tornado99]

According to MS belt desc for the 825 belt:
"CAM6239 pulley 3.875" wide and CAM6408 pulley used from A plus onwards is 4.75"wide."

So measure your fan pulley. Select either 825 or 838. Belt to suit.

[62S]

Remember that your new belt will stretch after just a few miles and need readjusting.

[sonscar]

Funny thing that stretching,buy a new car and visit dealer in a few miles for belts adjusting?Steve..

[GraemeC]

Most (all?) modern cars using rubber belts have tensioners

[Ethel]

I don't think belts stretch as much as deform so they sit further in the V - modern cars tend to use tooth or multi grove belts, they need less bearing stressing tension too.