2000/12/01 Caterpillar

A New Electronic Actuator Is Used In Gas Pressure Regulator Groups That Are On Engines That Have Air/Fuel Ratio Control Systems {1716}

Usage:

G3516 4EK

Engines: G3508 (S/N: 9TG) G3512 (S/N: 7NJ) G3516 (S/N: 4EK)

Engine News SEBD9292, December 2000, "A New Electronic Actuator Is Used In Gas Pressure Regulator Groups". Disregard this article. See the article that follows.

Description of Change: New electronic actuators are used in the gas pressure regulator groups on the above engines that have air/fuel ratio control systems. The new electronic actuators include a five pin electrical connector. The former electronic actuators include a six pin electrical connector.

Adaptable To: The new 187-3516 Electronic Actuator has replaced the 141-8799 Electronic Actuator in the gas pressure regulator groups on these engines. The table identifies the effectivity of the new electronic actuators and the gas pressure regulator groups on these engines. The 141-8799 Electronic Actuator is still available to service engines that include electronic actuators with a six pin connector.

Show/hide table

Table 1
Effectivity And Usage Of The New 187-3516 Electronic Actuator
Engine Model	Effective Serial No.	Gas Pressure Regulator Gp Part Number
G3508	9TG226	175-6827
G3512	7NJ634	155-1723
G3516	4EK2831	155-1724