How does the serpentine belt work on a Mercedes Benz?
This article applies to the Mercedes-Benz E-Class and C-Class (2002-2014). The serpentine belt uses tension to turn the pulleys on the A/C compressor, power steering pump, and alternator. The serpentine belt tensioner has a built-in spring, keeping the belt at the proper tension while the engine is running.
How do you take the serpentine belt out of a CLA?
1. Loosen passenger wheel lugs, jack and put jack stands, and take out the passenger wheel for more space. 2. Take out passenger splash guard (5 plastic screws, 2 plastic cap, and 1 solid screw) 3. To take out the serpentine belt, all you need is a long torqe wrench or similiar to put between the Tensioner and water pump belt guide. 4.
What kind of nut does a serpentine belt use?
Small punch, cotter pin, rivet, carpentry nail etc. There are two styles of serpentine belt tensioners. The earlier (112,113 engines) style has an E10 bolt, while the newer (272,273 engines) uses a 17mm nut for adjustment.
What kind of exhaust fluid does BlueTEC use?
All Bluetec vehicles use Diesel exhaust fluid, also known as AdBlue. It is stored in an external tank, and it would freeze in cold weather. To prevent this, DEF tank is equipped with an electric heater which can burn out. You will be warned with a ‘check engine’ light if this happens.
This article applies to the Mercedes-Benz E-Class and C-Class (2002-2014). The serpentine belt uses tension to turn the pulleys on the A/C compressor, power steering pump, and alternator. The serpentine belt tensioner has a built-in spring, keeping the belt at the proper tension while the engine is running.
When to replace a drive belt tensioner on a Mercedes?
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 replace 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.
What causes a Mercedes W124 drive belt to slip?
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 pulley can also fail by the bearing wearing out – this will cause the belt to wear unevenly and fray along the edges.
Small punch, cotter pin, rivet, carpentry nail etc. There are two styles of serpentine belt tensioners. The earlier (112,113 engines) style has an E10 bolt, while the newer (272,273 engines) uses a 17mm nut for adjustment.
When do you replace the serpentine belt on a Mercedes?
Continue reading to avoid this by learning how to replace the serpentine belt on your Mercedes-Benz E-Class or C-Class. This article applies to the Mercedes-Benz E-Class and C-Class (2002-2014).
What happens when you wear the serpentine belt?
The serpentine belt powers every accessory on the engine. When it wears, belt slip occurs and it will decreases the A/C, power steering, and charging system performance. Continue reading to find out how to replace the serpentine belt on your Mercedes-Benz C-Class.
Where is the serpentine belt tensioner on the M271?
The serpentine belt tensioner on the M271. The green circle indicates the T55 slot to move the tensioner. The 272 will require you to remove the front engine cover. Simply pull forward and up to detach it. You will hear the four plastic clips on the bottom side of the cover pop free.
What’s the best way to replace a serpentine belt?
Auto tensioners have either a hole that will fit a half inch drive ratchet, or a bolt you can use a socket to apply pressure to. Insert the wrench or place the socket over the bolt on the tensioner and twist it away from the belt to relieve the tension on it.
How is the tension set on a serpentine belt?
Depending on the application, your serpentine belt will either have tension placed on it using a movable bracket or an auto tensioner pulley. This pulley uses an internal spring to apply consistent pressure to the belt at all times. If your vehicle does not have a tensioner pulley, the alternator bracket is likely how tension is set on the belt.
Where do I find the serpentine belt routing diagram?
Find the serpentine belt routing diagram. Many cars come with a sticker in the engine bay that shows exactly how the serpentine belt is supposed to be routed through the various pulleys on the engine. If your vehicle does not have a sticker, you will need to find another way to remember how the belt should be run.
How do you remove a serpentine belt from a Mercedes Benz?
Use a 15mm socket to rotate the tensioner pulley clockwise. This will loosen the serpentine belt and allow you to remove the belt from the alternator pulley. In this picture, you are looking down at the ratchet sitting on the tensioner nut. Now remove the old belt.
Find the serpentine belt routing diagram. Many cars come with a sticker in the engine bay that shows exactly how the serpentine belt is supposed to be routed through the various pulleys on the engine. If your vehicle does not have a sticker, you will need to find another way to remember how the belt should be run.
Depending on the application, your serpentine belt will either have tension placed on it using a movable bracket or an auto tensioner pulley. This pulley uses an internal spring to apply consistent pressure to the belt at all times. If your vehicle does not have a tensioner pulley, the alternator bracket is likely how tension is set on the belt.
What happens if a serpentine belt goes bad?
The serpentine belt in most modern vehicles transfers power from the crank pulley to the various accessories mounted on the engine. A worn or damaged serpentine belt can fail to adequately transfer the power, leaving your alternator, power steering, and air conditioning failing to function.