Needs some help. New to the Jaguar club. Just purchased an 05 S Type R. Needs the supercharger belt tensioner and supercharger idler pulley. Found the tensioner, but have not had any luck at all finding the idler pulley. Mine only has 55k miles and pulley is smooth not ribbed. Bolt pressed in. Could really use some help finding this pulley, suggestions? Thank you.

 

Can the bearing be replaced in the idler pulley? Not familiar with this exact application, but I’ve done so on other vehicles. The bearing is usually just pressed into the pulley. Use an assortment of large sockets or short pieces of pipe in a press or vise.

Take the old bearing to a bearing supply house. They should be able to easily match up a replacement.

 

Muddy One Eleven: When you find time. please stop by the New Member's forum and post the expected "introduction"; it can be found here:

New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum

This will help you attain full member status and additional forum privileges.

 

Are you aware of the change Jaguar made to the belt and pulley system because of belt squeaking?
Has your car been updated?
See the attached TSB because I think the old obsolete stuff with the smooth idler is what you have.
Note the TSB lists all the parts needed to upgrade your car.

That was one of the first things I had repaired under my Jaguar CPO warranty when I first got my 2005 STR.
They changed the belt from grooved on one side to a double sided grooved belt. It fixed my squeaking noise 100%!
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Thank you for the suggestion and work/parts list. Not sure Jaguar dealer will do anything for me, I’m not original owner? But I can try, thank you again for suggestion. Lots of ribbed pulleys out there, can’t find smooth.

 

No the dealer most likely will not even work on your car at this point. We have had multiple reports that dealers are now turning away any customer whose car is over 10 years old. Don't understand it but Jaguar is shrinking every day. The dealer I purchased my XJR from has now dropped Jaguar and is ONLY a Land Rover dealer. Many Jaguar dealers in the US are closing.

Not sure where Jaguar is going?

But my point is you will need to upgrade since Jaguar obsoleted all those other parts because of the squeaking problem.
You do want the upgrade too because the squeak is very annoying. Might as well bite the bullet and see what it costs?
You mention dealer but with a 2005 STR you will need to DIY the repairs or the car will be a money pit.

Are you aware of the cooling hose under the SC and has it been changed?
Are you aware of the failure prone DCCV and has it been changed?
Understand that your 2005 car is now 18+ years old. ALL the cooling hoses need changing and there is like 23 different hoses.
You did not mention miles but at this age has the transmission been serviced? Are you aware of the leaking sealing sleeve?

All this is common knowledge on the S-Type forum so spend some quality time researching stuff
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I've been reading various parts of the forum but haven't found a definite answer to these questions.

1) If the belt tensioner is already grooved, do you need to buy replacement part C2C 37057?
2) When switching from the smooth SC idler to the grooved SC idler, do you have to change the idler bracket as well (C2C 37056)? Will the old one work just fine?
During my diagnostics, I could see the smooth SC idler pulley wobble during vehicle operation.

TSB for supercharger drive belt says
- Replace belt (C2C 37055)
- Replace SC idler pulley bracket (C2C 37056)
- Replace belt tensioner (C2C 37057)
- Replace SC idler pulley (C2S 46862)

At this time I've only bought the belt and the SC idler pulley and I would really like to avoid the bracket and tensioner if possible.

 

The TSB JTB00045v4 only applies, as it states, "Should a customer express concern ...". So, if that's you...

 

JagV8 I'm not sure I understand. For example, when I inspected the accessory drive belt, I was surprised to see it already had the flanged pulley installed but it makes sense that the previous owner probably did that. When I look at the supercharged belt, the tensioner pulley is ribbed and I'm wondering if that is part (C2C 37057). Why replace the tensioner pulley if the current one will work just fine or if the needed part is already there?

Also, would the new SC idler pulley fit into the old bracket? Or do I need to go ahead and buy that bracket as well?

Excuse me if this is very simple for you. I'm new to a lot of this and sometimes I need things spelled out. It's a difference between $150 and $480.

 

Well if you don't replace it all as listed in the TSB I am not sure if that will fix the squeak or not?
You can try it?
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UPDATE:

1) If the super charger belt tensioner is already grooved, do you need to buy replacement part C2C 37057?
Answer: No, the original tensioner will work fine so long as it is not damaged. If you are replacing the supercharger belt you might consider removing the supercharger belt tensioner in order to feed the new belt onto it. This is not necessary to do (see https://www.jaguarforums.com/forum/s...acement-34936/). In the link mentioned, fergs03R describes uses lubrication to pass the belt through the small clearance. I followed his instructions and was able to install the belt without removing the original supercharger tensioner pulley.

2) When switching from the smooth SC idler to the grooved SC idler, do you have to change the idler bracket as well (C2C 37056)? Will the old one work just fine? During my diagnostics, I could see the smooth SC idler pulley wobble during vehicle operation.
Answer: No, you do not need to buy another idler pulley bracket so long as there is not any damage to the original bracket. I did not know this and bought the part anyways. The replacement part is identical to the old part and is very simple in design (no moving parts). I left the original bracket in place.

In short:
TSB for supercharger drive belt says
- Replace belt (C2C 37055) -->Yes you will need to buy this. The old belt is smooth on one side and grooved on the other. The new belt is grooved on both sides.
- Replace SC idler pulley bracket (C2C 37056) --> No. Inspect the original part for damages before getting a new one. The bracket is essentially a block of metal that has a hole for a screw.
- Replace belt tensioner (C2C 37057) --> No. Inspect the original part for damages before getting a new one. Replacing this part unnecessarily will require you to remove a lot more components to reach it.
- Replace SC idler pulley (C2S 46862) -->Yes. The original part is smooth but will need to be grooved. I found the part on moss motors but is was unfortunately discontinued. With further research I found out that part C2D21157JAG was a new idler pulley that was to replace the C2S 46862 (see https://www.jaguarparts.com/oem-part...ulley-c2d21157). Officially this C2D2 part was rolled out for 2007 and onwards but I bought it anyways even though my car is 2003. The part installed well and I used a torque wrench to meet the 25Nm as per the TSB on alldatadiy.com. I have been driving the car on city roads and the highway with no issues.