Date registered: Dec 2008
Vehicle: 1991 190E 2.6lt; 1998 E320 Wagon 4Matic; 2007 E350 4Matic; 2004 C240 4Matic
Location: Vancouver Canada
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Great fix thank you. It inspired me to fix mine the same way, as the tensioner was fine but the bearing was fried. However, when I removed my pulley it was significantly different then the one you described . The bearing was sandwiched between two haves of the pulley. I had to drill out the rivets that held the pulley halves together, separate the halves then tap out the bearing, tap in a new bearing ane rivet the pulley halves together. The bearing was a NTN 6203LHA..very common and inexpensive (under 20 CDN.) I'd include pictures but haven't figures out how to upload them. I got help from a machinist at a brake shop and flipped him 20 bucks for his help..however it is a diy, especially if you have a drill press. I changed it two weeks ago and all is great. There is no need to remove the tensioner from the engine,simply use a 15mm wrench to remove the boolt holding on the bearing dust cap. This was for my 2000 E320. My 1998 E320 wagon had already been upgraded to the newer tensioner.