10. DRIVE PULLEY/DRIVEN PULLEY/CLUTCH MXU 500IRS Remove the five bolts and then remove the Bolts fan guide. Fan Guide INSPECTION Inspect the drive belt for cracks, scaling, Drive Belt chipping or excessive wear. Measure the V-belt width Service limit (A): 30.8 mm (1.232 in) (A) Replace the drive belt if out of specification. Drive Pulley Face INSTALLATION Install the fan guide. Install the drive pulley face. Install the driven pulley washer. Washer 10-6