The Accord's serpentine belt is a single main drive belt running the alternator, air conditioner compressor and possibly other accessories. Honda recommends checking this belt for wear every 7,500 miles or 6 months. Although some older models have components that adjust toward or away from the engine for belt tension, newer Honda Accord models have an auto-adjusting belt setup that makes replacing the serpentine belt a lot easier.
Find the auto-adjusting belt tensioner. The belt tensioner pulley is located generally located behind the alternator and above the crankshaft on the Honda Accord.
Rotate the belt tensioner bolt to release tension on the belt. Rotation direction may vary by model, and some models may have a different bolt head where a breaker bar or ratchet may be the more applicable tool. Check owner's documentation and use the appropriate size and style of tool to loosen the bolt.
Slip the old belt off of the pulleys, and use a routing belt diagram or sketch to install the new serpentine belt. Honda generally includes a belt routing diagram somewhere under the hood, showing where the belt goes around various pulleys.
Rotate the tensioner again to allow the belt to be installed on all pulleys, then slowly release it to regain tension.
Run the engine and observe the belt for proper functioning. Before starting, make sure the belt is seated properly on all of the pulleys.
