£ C43 £ AMG £

hi all,

I really had no warning this was going to happen, the bolt just snapped after a mile of driving fom my house (I need to drill out the thread which is left)

I need a new bolt and pulley, am I missing any other parts as this is all I could find at the bottom of the engine bay?

I hope ASP can sort me out, does anyone know what the crack is with the bolt breaking?

lowprofile

That's all of it.

stevebez

A bearing siezing could cause that kind of collapse

£ C43 £ AMG £

thanks.............. it not a great design having a plastic pulley, I dont see why I cant use another cheap ebay idler pulley like this will I wait for the ASP one.

http://cgi.ebay.co.uk/Mercedes-Idler...item1c0a80efc0

£ C43 £ AMG £

thanks

I checked both bearings, the inside pulley bearing is perfect, the outside pulley bearing has a fair amount of play but turns freely?

I just want to avoid this from happening again. I had driven the car all day and not heard any noises/grinding etc........ the worn bearing vibrating, caused metal fatigue and the bolt gave after time maybe?

I might try and fabricate a support bracket.

£ C43 £ AMG £

I just realise the pulley I need to replace is the 6 ribbed accessory plastic pulley.

I dont think ASP will supply this.

Does anyone no the part number of a pulley I can use, is the W210 E55 the same?

cheers

pun1sh3rz

I searched aimlessly for a replacement plastic pulley, no luck. If you happen to find one, please let me know.

The issue I came across was the plastic pulley was/is only being sold in a package with the SC idler with pricing ranging from 250-500

beauphus

i had this same problem. i broke my inner double idler (plastic ribbed) pulley and i am fairly certain the just finished there first batch of these in aluminum. call them. they have been prototyping this for a month and it is now in production i think. otherwise someone here on the board has a spare (or at least they did when i needed it).

£ C43 £ AMG £

thanks pun1sh3rz,

the original pulley is 90mm ext DIA and 17mm int DIA, I have found/sourced from a local AC DELCO supplier a 6 ribbed pulley which is almost identical, so I have ordered for £16.

http://www.gates.com/oreilly/PDFs/PulleyIndex.pdf



Now I have to work out have to take the front engine plate/braket off that holds the other pulleys,alternator,waterpump etc so I can drill out the broken of bolt thread.


OOH and what do you know....... MB doesnt seem to be able to supply me a new bolt as it comes with the idler pulley kit ...........£270

£ C43 £ AMG £

cheers that sounds like good news.

I have e-mailed them,,,,,,,,,,, so I will what for a response and order one also if its availible.

pun1sh3rz

I would be cautious going with this plan

Exotic-metal55

I had all those pulley`s made by ASP and bbeen running the them for at least 4K miles.. Very quiet, smooth and no problems at all..


I bet your bolt broke from the heat caused by the outer pulley being worn out.. Now that it is getting hot, I bet we see more stock idler pulley`s fail soon..

£ C43 £ AMG £

thanks.........the outer metal pulley bearing had no play, the inside one did.

The Plastic pulley I sourced is spot on, I cant belive that MB would not sell me the bolt separately as it only comes with the idler as a full set, typical!

the gap between the two pulleys was very tight and they were almost touching so I have used a 2mm steel washer to keep them apart and not vibrate against each other which might have been the cause of the bolt breaking due to metal fatigue.

also I dont see why it would not be possible or what the issue would be, to have a solid double pulley machined to fit......... both belts spin a the same rate.............do the not?

Ego55

Bringing this post back from the past. £ C43 £ AMG £ How did the GATES pulley work?
I replaced my accessory belt, as the car was idling the plastic accessory pulley broke tearing apart the new belt. I think the 90,000 miles of engine heat and extra tension the new belt has caused the pulley to disintegrate.

Is there a better way to fix this then spending $400 at stealership? I found many listings on Ebay that appear to sell the plastic accessory pulley only.

sealrockswell

This happened to me as well. I replaced the plastic part with a DAYCO 89130 for $25. This part is verified and fits perfectly. http://www.ebay.com/itm/390913099113?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Now about that bolt.. Does anyone have a source for this? What did you end up going with. I know this thread is pretty old but I'm hoping to get some feedback from someone.

Exotic-metal55

Bolt size for the double idler assembly, is a M10 x 1.5 x 100mm.

sealrockswell

Thank you x1000

Crissus

So, we are talking about that double idler pulley at the top left of the engine, when standing in front of it.
Mine looks metal alike, i thought it was already an upgraded version

shagger11

can this be bought in the uk...?

sealrockswell

I have an extra one I can ship to you if not.