Belt Tensioner Replacement - C Class - W204 - Mercedes-Benz



Belt Tensioner Replacement - C Class - W204 - Mercedes-Benz


Belt Tensioner Replacement Time: 1 hour Tab: $80 to $200 Tools: E12 Torx driver, 4mm Allen or drill bit Applicable Models: Mercedes-Benz C350 (2008-15) Mercedes-Benz GLK350 (2010-15) Parts Required: Belt tensioner Hot Tip: Don't work on a hot engine Performance Gain: Will not leave you stranded at the side of the road The V-belt or drive belt tensioner provides a constant tension on the belt that is needed to run all of the engine accessories. Over time the tensioner can fail to maintain the proper tension, and the belt will start to slip. If this happens it will usually make a squealing noise. The tensioner can also fail from the bearing wearing out; this will cause the belt to wear unevenly and fray along the edges. You should check your tensioner and V-belt every six months for wear, cracking, fraying, delaminating and drying out. If the tensioner is loose or you can wiggle it or if your belt shows any of these signs you should replace them. I recommend you always replacing the belt when replacing the tensioner and recommend you buy two belts and always keep an extra one in the car. You don't want to be stranded on the side of the road for the lack of a spare drive belt. Replacing the belt tensioner on your Mercedes-Benz W204 is a relatively easy job. You should be able to do it in an hour. It is a great starter project if you are just beginning to DIY or "Do It Yourself" on your car. Let the car cool so you don't have to work around a hot engine. Drive belts need the right tension to work correctly. Make sure your cars belt is operating properly with a new belt tensioner. Applies to: C350 (2007-14), SLK350 (2004-14), CLS350 (2004-14), CLK350 (2005-14), E350 (2005-14), S350 (2005-14), SL350 (2005-14), R350 (2006-14), ML350 (2006-14), Viano (2005-14), Sprinter (2006-14), CLC350 (2008-14), GLK350 (2008-12)


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