2013/01/03 Caterpillar

Engine:

G3508 (S/N: 9TG1-UP; WPM1-UP; WPN1-UP; DLR1-UP)

G3508B (S/N: RBK1-UP)

G3512 (S/N: 7NJ1-UP; WPP1-UP; WPR1-UP)

G3512B (S/N: JHH1-UP)

G3512E (S/N: SSR1-UP; NGS1-UP)

G3516 (S/N: 4EK1-UP)

G3516B (S/N: JEF1-UP)

G3520B (S/N: GLF1-UP)

G3520E (S/N: GZE1-UP)

Petroleum Engine:

G3520B (S/N: TPC1-UP)

Engine News SEBD9838, 03 January 2013, "A New Fuel Metering Valve Is Now Used for Certain G3500 Engines". The article was revised to add serial number prefix S/N:SSR
.

Description of Change: The new fuel metering valve has an overmolding to seal the leak paths into the sensor box. The new fuel metering valve has new connections on the internal CAN wiring.

Adaptable To: The new 418-7744 Gas Control Valve is a direct replacement for the 343-1902 Gas Control Valve, which i canceled. The 418-7744 Gas Control Valve is adaptable to engines dating back to the first production.

Table 1

Sales Model	Effective Serial Number
G3508	S/N:9TG1-UP
G3508B	S/N:RBK01224-UP
G3512	S/N:JHH00124-UP
G3512E	S/N:NGS00135-UP
G3516B	S/N:JEF02038-UP
G3520B	S/N:GLF01103-UP S/N:TPC01112-UP