Quote:
Originally Posted by toomany MBZ
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Make sure to loosen the hold down bolts, and don't break the tensioning bolts. On my cars I'll use a bump starter after I just get 'em on the lip, bump the engine, they "walk" right on.
Also be sure to get the correct size belts. You may be able to read on the old ones what size they are. At worst, take the old ones to a auto parts store, they should have a gauge to measure them. If you have to cut any off, you know that one is too short. Happens sometimes.
Good luck.
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^This is a good way to DRASTICALLY shorten the life of a new belt.^
Even for a rookie, changing belts shouldn't be too difficult. You will need a few wrenches and in most cases you don't even need a prybar on an MB.
All three have adjusters that will move the accessory in or out AS LONG AS the clamping bolts are loose. Example is the alternator; loosen the long bolt at the pivot and the bolt that goes through the adjuster. These are the bolts that run fore and aft. Then you can run the adjuster that is the long stud that runs toward the engine.
Just take your time and look it over as you go. It's nothing that can't be done by just looking at how it goes together.
Final tip: on ANY vehicle always spin everything while the belts are off. Everything should spin very smoothly except, of course, the crankshaft pulley. There is no better time to check for a rough bearing or a noisy accessory.
Good luck with it.