ENGINE Accessory Drive Belts 2. Slip the belt around the idler pulley attached to the automatic tensioner. You can extend the reliability and service life of your vehicle's drive belts with proper attention to installation, and maintenance. Neglect could cause belt failure. The result could be the loss of the electrical or air system as well as possible engine damage from overheating. So it's a very good idea to check your belts frequently and replace them as soon as you detect trouble. 3. Release the automatic tensioner. 4. Check the belt alignment on each pulley. The belt must fall between the flanges of each pulley.
PACCAR MX Belt Routing Follow this procedure to install an accessory drive belt: NOTE 1. Route the new belt around the pulleys, and then rotate the automatic tensioner so that the idler pulley swings toward the belt routing. The following figure shows an example of the rotation direction to release the tensioner. See the engine manufacturer's oper- ator's manual for further information on replacing engine drive belts. 5 Cummins Belt Routing (03/17) Y53-6077-1B1 5-105