I started my Jaguar again this morning (after being parked up for about 20 minutes), the engine didn't sound right, so I switched it off and checked under the bonnet. I found, loose on the engine bay floor, what I think is the belt idler pulley. It is about 14cm in diameter, grooved on outside face for the drive belt and I believe fits to the engine with probably a 12 or 14mm headed bolt. My pulley has absolutely sheared off, where the centre is, where the bolt goes through, is still attached in the car, so the whole centre is missing from mine. This is the top left pulley, looking into the engine bay, but having no breakdown cover, workshop manual or anything I am trying desperately to identify the part so that I can at least order it up and get someone to come change it out.

Can anyone indicate what the part may be called, part number or anything - because as far as I can work out, talking to my local Jaguar dealer, there are many parts and pulleys and he couldn't indicate what part it was over the phone. The dealer is about 6 miles from me, the car is 2 miles in the other direction and I have no other means of transport. Any help would be most welcomed.

Thanks

Hi Roy,

 

Sounds a nightmare!  Any chance you could post a couple of pictures, it could help with the identification?

 

Best regards,

Dave

Thanks for the reply Dave. Attached 3 photo's showing back, front and edge. I have been reliably  informed ?? that it is the Drive Belt Idler Pulley and that mine has come off as the bearings have worn out and separated. This person also suggested it was an easy fix (once you have the part) to replace, un-tension belt and refix. Hope you can concur this to be the case, still not sure what sort of cost it will be but hoping my local Jag place could do it in situ, as I have now had it towed home. Thanks

Hi Roy,

 

Are there any markings on the pulley?  It looks like the left idler pulley but can't be sure.

 

The pics below show the configuration of the accessory drives/pulleys, can you see if any are missing?

 

Regards,

Dave

 

 

 

Thanks for the help and pics Dave, it is definitely 1 on the accessory drive diagram. I have checked the belt and it seems intact, routed as the rest of the diagram, so hopefully just a pulley.

Hi Roy,

 

Pulley #1 is called "Accessory drive belt idler pulley", the closest I've found is PN AJ89037 but is for a S-Type V6 2006 to 2009, I haven't found anything older.  Have a look at:

 

http://britishparts.co.uk/products/8029-idler-pulley-AJ89037

 

Regards,

Dave