G3408 and G3412 Engines Caterpillar

High Pressure

Illustration 1	g00579441

(1) Locknut

(2) Adjustment screw

(3) Spring

The pressure range of outlet (4) is the following value. ... 0.87 to 1.62 kPa (3.5 to 6.5 inch of H₂O)

Color ... Red

Free length ... 190.5 + 3.2 - 1.6 mm (7.50 + 0.13 - 0.06 inch)

Inside diameter ... 47.6 + 1.6 - 0.0 mm (1.87 + 0.06 - 0.00 inch)

(4) Regulator outlet

(5) Regulator inlet

Pressure in gas supply line

Turbocharged engines ... 140 to 276 kPa (20 to 40 psi)

Maximum pressure ... 276 kPa (40 psi)

Low Pressure

Illustration 2	g00608718

(1) Regulator inlet

(2) Spring

Color of the spring ... Red

The spring should be set at the following pressure. ... 1 to 1.4 kPa (4 to 5.5 inch of H₂O)

(3) Regulator outlet