BOARD AS-RELAY 9Y6497 - Caterpillar

D379, D398, D399, G379, G398, G399 And 3500 Series Engines Equipped With UG8L GovernorA 4W85 Air Actuator Kit and the 7W4923 Diaphragm Kit are available to repair 3N9124 Air Actuators used in governor control groups on the above engines equipped with UG8L Governors. These kits will allow the air actuator to be rebuilt and also provide parts to update earlier actuators. The components of the 4W85 Air Actuator Kit are shown in the illustration and listed in Chart A. The components of the 7W4923 Diaphragm Kit are shown in the illustration and listed in Chart B.
Components of the 4W85 Air Actuator Kit and the 7W4923 Diaphragm Kit.