ptirado961

My C32 threw the belt the otehr day, and it turned out to be the infamous "idler pulley". I thought the ticking noise was the SC pulley, and I was saving $$$ for a smaller performance SC pulley because they come with the bearings already pressed in. BIG MISTAKE!!! The idler pulley was the culprit, and finally seized up, and distroyed the mount that is part of the water pump cover. I have searched everywhere on the internet, butr can't find any DIY tips for removing/installing a new cover. It doesn't look too complicated, but would like to know if there are any tips, pictures, etc that anyone has that will help me with this procedure?


Can I replace just the cover or do I have to replace the entire Water Pump?

ptirado961

Anyone have any tips/pics for this? I don't want to screw this up... I am thinking it is justthe pulley bolts and case bolts, and the whole thing will fall off with a little hit from a rubber mallot. Does that sound right? Should I do this myself, or shoud I take it to a shop?

///AMG4EVER

My idler pulley also failed a couple of months ago but I'm not picturing what you are saying...

loungn14

ya, not following either....you got a pic to show whats going on?

ptirado961

To clarify: The idler pulley that failed, completely seized up causing stress on the pulley so much that it chewed a huge chunk of metal off of the pulley mount. That pulley mounts to the casing of the "water pump". I bought a new pulley, but because the mount is chewed up, it won't sit properly. I have determined that I will have to replace the water pump cover. My question is "what are the steps to replace the WP cover?". I haven't seen any DIY pics or steps here for that. I can't be the only one this has happened to.

1qikctr

I try to read what happen, but can't really picture it..... you should take a picture, you might get some helpful inputs on this problem.

highvoltz

Whats the part number for the idler pulley? mine did the same thing, need replacement.. where did you purchase?

gaz

I can't recall the idler pulley mount you are referring to, but I have changed the water pump on mine. Not hard to do - the alternator mounting bolt passes through it, so will need to come off. The bolts securing the pump are of varying lengths, so make a note of where they fit. Pretty easy really, no need to remove the radiator or anything big.

ptirado961

Should I get a new WP from the Stealer, or are there other sources that are cheaper?

PS - I have been driving around since this happened with a new pulley after filing and reshaping the mount the best I could with no real issues or thrown belt. The pulley is even cocked a little and the belt doesn't ride on the pulley perfectly (only 60% of the belt is on the pulley). I really need to install a new WP. Everytime I gun it, I say a little prayer...

60n5pt1

Stealership @ $72.00.
This pulley has the v-grooves on them and next to the SC pulley.

c32AMG-DTM

This is directly off of my recent invoice from an independent MB specialist shop:

The grooved guide pulley to the left of the S/C pulley is part # 120 200 04 70 - just bought one for $55

New WP is 112 200 13 01- 88 - it was $277.59 with core exchange

Just happened to have the invoice right in front of me, given this week's MBW activity

ptirado961

So far, I have been able to run for eight months without throwing the belt or any worn parts (as far as I can tell). I even have the Code3 SC pulley on, and was hammering it over the weekend. Well, I finally ordered a new Water Pump from RockAuto (CARDONE SELECT Part # 5583333 (55-83333) for 187.79). If anyone knows of a thread that has a good DIY writeup with pictures of R&I of the Water Pump, I would be much obliged...

positronicC32

Just wanted to know if that water pump you bought worked for you ok? I've a C32 that I'm hoping it will fit. Any heads-up / update would be appreciated.

testknight

FYI I got mine from parts.com (OEM part and part number for our cars)...with core return refund it didn't end up bieng that much. I did a write up of my install f you want to check it out.

ptirado961

Sorry it took so long to reply, but YES! It worked out perfectly, and never had any issues. I had it installed by a local shop that really didn't work on MB cars, and was a bit reluctaant to attempt the install, but all is good. I sold thje C32 and upgraded to an E55 July of last year. The C32 was running stong with no issues with over 80k on the ODO (other than the tranny jerk around 1500rpm in stop and go traffic.)

positronicC32

No need to be sorry sir. The post you made with the RockAuto part # for the Cardone waterpump saved me a whole bunch of dollars and I had it installed locally - no issues. Thanks.

On a new note, how's the E55? That certainly is an upgrade and would be my logical choice as a next Merc. For now though the C32 is just perfect

Happy driving!