Adjustments (Charging System)

NOTE: No adjustment or maintenance is required on generator assembly. Regulator voltage is preset and no adjustment is possible. On all models except "P" series trucks, drive belt tension is controlled by a belt tensioner. On "P" series trucks with 4.3L, 5.7L and 7.4L engines, drive belt tension for a new belt should be 135 lbs. (61.2 kg). On "P" series trucks with 4.3L, 5.7L and 7.4L engines, drive belt tension for a used belt (belt that has rotated one or more revolutions) should be 90 lbs. (40.8 kg). On "P" series trucks with 6.5L diesel engines, drive belt tension is controlled by a belt tensioner.