Montero XLS 4WD V6-3.5L SOHC (2001)
Drive Belt Tensioner: Testing and Inspection
AUTO-TENSIONER CHECK
1. Run the engine at idling speed and then stop it to check whether the drive belt is centered on the auto-tensioner pulley.
2. Insert a 1/2 inch breaker bar into the square hole on the drive belt auto tensioner, and rotate it clockwise until the tensioner touches the stopper.
3. Align hole B with hole A, and insert a 5.0 mm (0.20 inch) Allen wrench to hold the tensioner. Then loosen the drive belt, and then remove the
drive belt auto tensioner.
4. Move the auto-tensioner right and left by using a 1/2 inch breaker bar or similar tool to verify that it moves smoothly.
5. If some abnormality is found during the above mentioned check (1) and (3), replace the auto-tensioner.
