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Registered 1997 SLK230 Kompressor
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275 Posts
Discussion Starter #1
I'm in the process of replacing my belts. They look original - brown and maybe a little brittle so whilst the car is off the road, I thought I'd get it done. The DIY section has comprehensive instructions but I did give some thought to maybe replacing the tensioner pulleys for both the compressor and the cooling (refers to the product grouping in EPC) and also the compressor guide pulley. In the event, since there is no play on any of the bearings that I can tell, I'm going to leave them alone. It's not that big a deal to do them at a later stage - the biggest pain is taking the cooling fan out and even that would be a 10 minute job next time around.
However since I went to the trouble of looking up the part numbers, here they are. It was clear from earlier posts that there was some confusion on interchangeability of pulleys and tensioners etc - they are clearly not interchangeable!

Compressor
Guide Pulley 111 202 01 19
Belt tensioner Pulley 119 200 14 70
Belt tensioner 111 200 13 70
Pulley Cap 601 202 05 22 ..........plastic ........breaks easily but not at all expensive - same with all of them.
Pulley Cap 119 202 02 22

Cooling
Belt tensioner pulley 111 200 00 70
Belt tensioner 111 200 07 70
Pulley cap 111 202 01 22
 

·
Registered 1997 SLK230 Kompressor
Joined
·
275 Posts
Discussion Starter #2
I've changed my mind on replacing parts. This was after reading a variety of posts. The guide pulley had a hairline crack on the back face. Can only be seen by removing and seems to be quite a common problem. One of the tensioner pulleys had a very slight rumble. And after 240,000 km who knows what state the tensioners themselves are in and the indicator lines on the tensioners are as far as I can tell just a guide to belt wear.
 
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