ISM, ISMe, and QSM11 – 011-051   Aftertreatment Injector Lines

Disconnect the aftertreatment injector coolant supply line at the inlet to the aftertreatment injector.

Disconnect the aftertreatment injector coolant supply line at the EGR cooler.

Remove the aftertreatment injector coolant supply line.

Disconnect the aftertreatment injector coolant return line at the aftertreatment injector.

Disconnect the aftertreatment injector coolant return line at the oil cooler.

Remove the aftertreatment injector coolant return line.

WARNING  Depending on the circumstance, diesel fuel is flammable. When inspecting or performing service or repairs in the fuel system, to reduce the impossibility of fire and resulting severe personal injury, death or property damage, never smoke or allow sparks or flames (such as pilot lights, electrical switches, or welding equipment) in the work area.

Clean the area around the fuel filter head and filter.

Remove the fuel filter with filter wrench, Part Number 3375249.

Disconnect the wiring harness from the shut off valve, fuel drain valve, and pressure sensor.

Disconnect the aftertreatment injector fuel supply line from the supply outlet of the fuel rifle.

Disconnect the aftertreatment injector fuel supply line at the inlet to the fuel shutoff manifold.

Remove the aftertreatment injector fuel supply line.

For access lower the fuel shutoff manifold by removing the two mounting capscrews.

Disconnect the fuel return line from the fuel shutoff manifold and the fuel control module.

Disconnect the aftertreatment injector fuel supply line at the outlet of the fuel shutoff manifold.

Disconnect the fuel lines from the union fitting, located just above the EGR valve.

Disconnect the aftertreatment injector fuel supply line at the inlet to the aftertreatment injector, use a 9/16 inch wrench. In some applications, access to the aftertreatment injector is difficult and requires removal of the exhaust adapter pipe. Refer to Procedure 011-043 in Section 11.

Disconnect the aftertreatment injector coolant supply line at the inlet to the aftertreatment injector.

Disconnect the aftertreatment injector coolant supply line at the coolant heater housing.

Remove the aftertreatment injector coolant supply line.

Disconnect the aftertreatment injector coolant return line at the aftertreatment injector.

Disconnect the aftertreatment injector coolant return line at the coolant return manifold.

Remove the aftertreatment injector coolant return line.

Disconnect the aftertreatment injector fuel supply line from the supply outlet of the fuel rifle.

Disconnect the aftertreatment injector fuel supply line at the inlet to the fuel shutoff manifold.

Remove the aftertreatment injector fuel supply line.

Disconnect the fuel return line from the fuel shutoff manifold and the fuel return tee fitting, located in front of the engine control module.

Remove the P-clips.

Disconnect the aftertreatment injector fuel supply line at the outlet of the fuel shutoff manifold.

Disconnect the aftertreatment injector fuel supply line at the inlet to the aftertreatment injector. In some applications, access to the aftertreatment injector is difficult and requires removal of the exhaust adapter pipe. Refer to Procedure 011-043 in Section 11.