Section 2.50
Fuel Mixer for the Series 60G Low Pressure System

The venturi fuel mixer assembly consists of a die cast aluminum body with a spun aluminum venturi permanently inserted into it. The unit has no moving parts. The mixer assembly is attached to support brackets and located at the right rear of the engine. See Figure "Low Pressure Fuel System (Series 60G Engine)" .‪

Figure 1. Low Pressure Fuel System (Series 60G Engine)

Section 2.50.1
Replacement of Fuel Mixer for the Series 60G (Low Pressure System)

The fuel mixer is non-serviceable and should be replaced as a unit. No adjustment is required.‪

Section 2.50.2
Removal of Fuel Mixer for the Series 60G (Low Pressure System)

Remove the fuel mixer as follows:‪

EXPLOSION ‪
To avoid injury from the explosion of natural gas, the engine must be kept in a well ventilated area away from open flames, sparks, and electrical resistance (heating) coils.‪

1. Vent fuel system; refer to "2.51.1 Venting an Operable Engine to Relieve Natural Gas Pressure" and refer to "2.51.2 Venting an Inoperable Engine to Relieve Natural Gas Pressure" .
2. Disconnect and remove the PSV from the fuel mixer, refer to "2.44.2 Removal of Pulse Width Modulated Stepper Motor Valve for the Series 60G Engine" .
3. Remove four fuel mixer mounting bolts.
4. Separate and remove the fuel mixer from the mounting bracket.

Section 2.50.3
Disassembly of Fuel Mixer for the Series 60G (Low Pressure System)

Disassembly of the fuel mixer is not required.‪

Section 2.50.4
Cleaning of Fuel Mixer for the Series 60G (Low Pressure System)

Cleaning of the fuel mixer is not required.‪

Section 2.50.4.1
Inspection of Fuel Mixer for the Series 60G (Low Pressure System)

Inspection of the fuel mixer is not required.‪

Section 2.50.4.2
Test of Fuel Mixer for the Series 60G (Low Pressure System)

Test of the fuel mixer is not required.‪

Section 2.50.5
Installation of Fuel Mixer for the Series 60G (Low Pressure System)

Install the fuel mixer as follows:‪

1. Clean gasket surface and install a new gasket.
2. Secure the fuel mixer to the mounting bracket with four bolts. Torque to 20 N·m (15 lb·ft).
3. Install the PSV to the fuel mixer, refer to "2.44.3 Installation of Pulse Width Modulated Stepper Motor Valve for the Series 60G Engine" .
4. Install air inlet hose and secure with V-band clamp. This hose must be of the current design that has a black interior surface. All former hoses have a blue interior surface and must be replaced. Also, the part number is printed on the exterior surface of the hose.
5. Perform a leak check procedure. Refer to "2.51.3 Leak Checking the Natural Gas Fuel System" .