How do you loosen a tensioner pulley on a car?
Loosening the tensioner pulley is accomplished by pulling it in a direction that gives slack to the serpentine belt. This action enables the belt to be removed and for replacement or repair of motor parts. Most tensioner pulleys require a standard ratchet for loosening.
How do you remove a pulley from a serpentine belt?
While the pulley is being pulled forward, slide the serpentine belt off of any pulley it is connected to. Release the pressure from the belt tensioner pulley by removing the tool. Inspect the pulley and belt while they are apart. Check the pulley for any cracks and wiggle it to see if it is loose.
How do you take a belt tensioner off a Mercedes?
With the hood open you need is an E10 (reverse Torx socket) and driver. Locate the tensioner and using the Torx driver turn the nut on the wheel counter-clockwise 45 degrees. You can now slip the belt off the tensioner.
What kind of Ratchet do you need for a tensioner pulley?
Most tensioner pulleys require a standard ratchet for loosening. Find the serpentine belt information sticker on the vehicle. This sticker will show the routing path and size of the serpentine belt. Sometimes these stickers also indicate what size socket or ratchet end is required to loosen the belt tensioner pulley.
When do you need to loosen a tensioner pulley?
Sometimes, maintenance or repair will require tightening or loosening a tensioner pulley. Replacing a drive belt or timing belt, for example, would require you to loosen a tensioner pulley to make room for the new belt, as the new belt is smaller than the worn drive belt.
How do you loosen a tensioner on a timing belt?
You’ll need to hold some spring tensioners while slipping on a new belt. Others may have a locking mechanism, such as a hole for a locking pin or hex key. Toyota and other timing belt tensioners are loosened by simply removing them from the engine. You must slowly compress them in a bench vice and lock them with a pull-pin before reinstallation.
How does hydraulic damper work on tensioner pulleys?
The spring maintains tension, while the hydraulic damper keeps it from bouncing under load changes. This prevents timing belts and timing chains slapping and jumping teeth and keeps drive belts from slipping and making noise.
With the hood open you need is an E10 (reverse Torx socket) and driver. Locate the tensioner and using the Torx driver turn the nut on the wheel counter-clockwise 45 degrees. You can now slip the belt off the tensioner.