Serpentine Belt Tensioner Replacement
Support Engine Step 2 - Once the engine is safely supported, remove engine mount retainer nuts.
Removing Engine Mount Nuts
Removing Engine Mount Bolt Step 4 - Once all mounting bolts and nuts have been removed the engine mount can be removed.
Removing Engine Mount Step 5 - While releasing the belt tensioner with a ratchet or breaker bar, remove the serpentine belt.
Removing Serpentine Belt Step 6 - After the belt has been removed inspect the belt for cracks which indicate the belt should be replaced.
Cracked Serpentine Belt Step 7 - Next, loosen the tensioner pivot bolt using a ratchet.
Loosening Pivot Bolt Step 8 - Once the pivot bolt has been removed, lift the tensioner from the engine compartment.
Removing Belt Tensioner Step 9 - After the tensioner has been removed inspect worn areas.
Worn Serpentine Belt Tensioner Step 10 - Compare the old serpentine belt tensioner to the new unit.
New Serpentine Belt Tensioner Step 11 - Next, install the new belt tensioner onto the engine.
Installing New Serpentine Belt Tensioner Step 12 - After the bolt has been installed, use a ratchet to tighten the mounting bolt.
Tightening Belt Tensioner Step 13 - It's a good idea to replace the old serpentine belt with a new belt. Compare the old belt to the new belt before installation.
Belt Comparison Step 14 - Once the comparison is complete, install the new serpentine belt.
Installing New Serpentine Belt After the belt is installed, reattach the engine mounts by reversing the order in which it was removed. Inspect the belt after installation is complete to ensure all routing on pulleys are correct. Helpful Information Belt tensioners keep a constant pressure on the belt, when they wear they will allow the belt to roll off the tensioner causing belt failure. When the spring tension is lost in a failed tensioner it will cause squeaking especially under acceleration. A belt tensioner is a normal wear item and should be inspected regularly. Tools and Supplies Needed
- Large pry bar
- Protective eyewear and gloves
- Replace serpentine belt when replacing a tensioner.
- Once the belt is removed check the rotation of free wheeling pulleys such as the alternator to detect failed bearings.