Generator

The AD-237 generator is electrically similar to earlier models. The generator features the following major components:
^ The delta stator
^ The rectifier bridge
^ The rotor with slip rings and brushes
^ A conventional pulley
^ Dual internal fans
^ The regulator

The pulley and the fan cool the slip ring and the frame.

The AD stands for Air-cooled Dual internal fan; the 2 is an electrical design designator; the 37 denotes the outside diameter of the stator laminations in millimeters, over 100 millimeters. The generator is rated at 125 amperes.

The generator features permanently lubricated bearings. Service should only include tightening of mount components. Otherwise, replace the generator as a complete unit.