Step 2: Locate the belt tensioner assembly on the FRONT of the engine.
Step 3: Using the 3/8 drive ratchet handle, insert the square peg into the opening on the tensioner and turn it CLOCKWISE. This releases the tension on the belt, allowing for its removal.
NOTE: If your serpentine belt looks frayed or worn, we recommend replacing it. After all, with the belt removed for this installation, it'll never be easier than it is right now!
Step 4: Loosen and remove the 10mm bolt (1) that secures the belt tensioner to the vehicle. You can now remove the tensioner.
Step 5: Mount the new belt tensioner assembly by tightening the 10mm bolt (1).
Step 6: Using the belt routing diagram posted near the radiator, on the UNDERSIDE of the hood, or in the owner's manual, route the serpentine belt around the proper pulleys.
Step 7: Once the belt is in place, use the 3/8 drive ratchet handle to turn the tensioner COUNTER CLOCKWISE, increasing the tension on the belt.
NOTE: The belt should be taut, but not stretched or overly tight!
These Part Change / Installation Instructions Apply to
10 2010, 09 2009, 08 2008, 07 2007, 06 2006, 05 2005, 04 2004, 03 2003, 02 2002, 01 2001, 00 2000 Mercury Grand Marquis Serpentine Belt Tensioner Replacement Instructions
