Hi all, on start up one of the pulleys on my SRT started screeching. I treated with CRC and it went away, but it's probably the start of bearings going.

I'm not familiar with the pulley setup on my SRT, but I'm told by the original owner, the Chrysler rep here in NZ, that it was modified with AMG pulleys.

I'll need to replace the pulley, but I have to identify what it is. Could someone please point me to the correct replacement? Please see photo - the screeching pulley is circled. The pulley is approx 70mm diameter.

The bracket over the bearing is an AMG one: A112 237 0740

I'd also appreciate a knowledgeable description of the setup in the photo, if you can identify it.

I've replaced pulleys on other cars before, so expect I can do this one as well. Any tips?

Mark

Pulley needing replacement circled in blue.

 

I identified this pulley as the culprit using the tube-to-ear method - it was the noisiest.

mb

 

the tiny idler you have circled will continue to fail, as will the other tiny idler directly below it, here is the answer!
https://needswings.com/pulley-saver-...ldigneedswings

or if you want to just replace the circled pulley instead of the forced upgrade, here it is
https://needswings.com/sc-idler-pulley

 

Thanks Rob. It's reassuring to have someone review the setup. So those are standard idler pulleys that came with the car?
Can you tell from the image, which, if any of the setup is modified?
The ECU has been Eurocharged tuned for a pulley upgrade. Will the new pulleys be okay with that tune?
I'll do the full upgrade you're recommending.
Mark

 

the top pulley is oem, the lower one is aftermarket and used to come with the large crank pulley kits until they started failing back around 2010 and the PSK came to life. i can't see which crank pulley you have but so long as it is a 178 (which most are) then no ecu tuning is needed.

you are also missing this
https://needswings.com/upper-radiator-hose-bracket

 

Thanks for spotting the missing radiator bracket. It was never there, so I didn't know it was missing.

Regarding the crank, it's 178 diameter. Photo of the lower section, with crank, is attached.


mb