Visually inspect for obvious signs of mechanical damage.
Visual Inspection Chart
Mechanical
Damaged or contaminated accessory drive belt Damaged or contaminated pulley(s) Incorrect accessory drive belt Incorrect fitment of the accessory drive belt Generator Air conditioning (A/C) compressor Pulley(s) Loose hardware
3.
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.