What should I do if my Mercedes tensioner starts to crack?
What should I do if my Mercedes tensioner starts to crack?
Put pressure on the tensioner 17mm head to move the tensioner up and remove the locking pin. Start the engine and ensure the belt and tensioner are working properly. Over time the tensioner pulley can start to crack.
Where is the idler pulley on a Mercedes?
Pull the hood release under the dashboard on the driver’s side. Remove the engine cover by lifting it. Locate the idler pulley at the front of the engine. Remove the serpentine belt. Use a 17mm socket and ratchet on the tensioner nut to unload the tensioner.
Do you need to replace the Mercedes belt tensioner?
In this guide, you will find step-by-step instructions on how to replace the Mercedes-Benz belt tensioner. While it is not required to replace the drive belt, it makes sense to replace it simultaneously as the tensioner. It is ok to reuse the old belt if it does not show wear, cracking, degradation, or drying.
Do you need a Torx socket for a Mercedes idler pulley?
This is common on M112 and M113 engines from 1997 to 2007. Newer Mercedes-Benz idler pulleys (on M272 and M273 and newer models) require a Female Torx socket. Always verify by inspecting the bolt on the center of your idler pulley. Park your Mercedes-Benz in an area where you can work.
Put pressure on the tensioner 17mm head to move the tensioner up and remove the locking pin. Start the engine and ensure the belt and tensioner are working properly. Over time the tensioner pulley can start to crack.
Pull the hood release under the dashboard on the driver’s side. Remove the engine cover by lifting it. Locate the idler pulley at the front of the engine. Remove the serpentine belt. Use a 17mm socket and ratchet on the tensioner nut to unload the tensioner.
In this guide, you will find step-by-step instructions on how to replace the Mercedes-Benz belt tensioner. While it is not required to replace the drive belt, it makes sense to replace it simultaneously as the tensioner. It is ok to reuse the old belt if it does not show wear, cracking, degradation, or drying.
What do you use to loosen a Mercedes crankshaft pulley?
You will need to use Mercedes harmonic balancer tool to hold the crankshaft pulley in place as you loosen up the 27 mm bolt. You will use the harmonic balancer tool to keep the crankshaft from turning. Next, use a 27 mm socket on the bolt to loosen it up.
