Accessory Drive: Notes

The accessory drive:

• has a single serpentine drive belt with 6 ribs.
• has automatic tensioning.
• is not adjustable.

The accessory drive system provides power to operate components which power other systems. The accessory drive system provides power to operate the coolant pump. The coolant pump is equipped with a pulley which is driven by the accessory drive belt. The accessory drive belt is driven by the engine crankshaft pulley. The automatic belt tensioner maintains correct belt tension and compensates for component wear and change in system load. System load changes can be caused by demand changes on other systems powered by the accessory drive belt. To maintain correct operation of this system, it is critical that the correct length drive belt be installed. The pulleys must also be correctly aligned and kept clean.