hello, i need help, I want to replace a new belt and I can't install. i loose the alternator and the power steering pump and still the belt seems to be small. I don't know it is the belt wrong size or I need to do something else. please help. thank you

the new belt brand is mileage maker and the code is 952k6 mk
don't know if is the right one but is the one i got from the auto parts. it also has the details DAYCO 5060950, 5060955.
THANKX

You need to loosen the tentioner.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

i did already

Did you match the new belt up to your old one? Thats a sure fire way to know wether you are close or if it is totally the wrong belt.

300E's came with a couple different engines in them.

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(1) '89 190E 2.6 Schwartze
(2) '89 190E 2.6 Schwartze

I had a hard time putting my belt back on my car(using the same belt as i pulled off), even after i loosened everything. the belt just seemed like it didnt fit, but i knew it did since i pulled it off. any ways just keep pulling and yanking on it to get it on. btw I have a 89 300se.

today i went to the autoparts store and exchange the belt for a diffeent model with an ac unit kind of belt which is one inch bigger than the one they give me before. will change the alternator also. so we'll se what is the result. got to get an alternator first so I can check for the belt size.
thankx for the help to all of you there.

Compare the length of the new belt with the old one, or call the Parts Department at your local MB dealer and ask what length belt you need for your car. Provide them with the VIN so they can confirm the proper length.

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Fred Hoelzle

Someone else with tensioner woes?!?

I recently changed the belt on my '91 300TE-24, the new belt which was the same size as the old was a bit of a struggle to get on, I put it around as many pulleys as I could and (with the tensioner released - Thanks guys) pulled to get the belt over the last pulleys. Make sure the clamp bolt is well and truly loose, and that the tensioner is loosened off. Turn the tensioner anti-clockwise to loosen!!!

I have put lots of oil onto the thread of the tensioner as it is a trap for dirt and rust.

Daz

You said later that you loosened the tensioner, but in this first post you did not mention the tensioner.

It is not necessary to loosen the alternator and PS pump; only the tensioner.

Are you sure you loosened the tensioner?

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2012 E350
2006 Callaway SC560

I did loose the tensioner, just waiting to get an alternator.

I loosen not only the tensioner, but one of the bolts on the damper.. this gives the tensioner pulley a little extra swing.

The easiest way to install a new belt for me is to route the belt through all the ribbed pulleys first and then pull the last slack over the tensioner pulley.

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1989 300SE: 200,000+ and going strong