ISM, ISMe, and QSM11 – 011-052   Aftertreatment Fuel Shutoff Manifold

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

• Make sure the area around the fuel shutoff manifold is clear of debris. Use compressed air to clean the area and remove any loose dirt particles.
• Disconnect the wiring harness from the aftertreatment fuel shutoff valve, aftertreatment fuel drain valve, and aftertreatment pressure sensor.
• Remove the aftertreatment fuel injector lines from the fuel shutoff manifold. Refer to Procedure 011-051 in Section 11.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

Fuel Shutoff Manifold – Make sure the area around the fuel shutoff manifold is clear of debris.

Use compressed air to clean the area and remove any loose dirt particles.

Remove the two mounting capscrews.

Remove the fuel shutoff manifold.

Remove the aftertreatment fuel shutoff valve (1), aftertreatment fuel drain valve (2), and aftertreatment pressure sensor (3) with a 1-1/8 inch open end wrench.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

Fuel Shutoff Manifold – Make sure the area around the fuel shutoff manifold is clear of debris.

Use compressed air to clean the area and remove any loose dirt particles.

Remove the two mounting capscrews.

Remove the fuel shutoff manifold.

Remove the aftertreatment fuel shutoff valve (1), aftertreatment fuel drain valve (2), and aftertreatment pressure sensor (3) with a 1-1/8 inch open end wrench.

WARNING  When using solvents, acids, or alkaline materials for cleaning, follow the manufacturer’s recommendations for use. Wear goggles and protective clothing to reduce the possibility of personal injury.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

Shutoff Valve, Drain Valve, and Pressure Sensor – Clean the shutoff valve, drain valve, and pressure sensor with safety solvent.

Inspect the o-ring for cuts or wear. Replace the o-ring if necessary.

Inspect the threads for damage.

Replace damaged components if necessary.

WARNING  When using solvents, acids, or alkaline materials for cleaning, follow the manufacturer’s recommendations for use. Wear goggles and protective clothing to reduce the possibility of personal injury.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

Shutoff Manifold – Clean the shutoff manifold with safety solvent.

Use compressed air to clean the shutoff manifold and remove any debris.

Make sure the filter screen and orifice are in the fuel inlet side of the shutoff valve manifold.

Inspect the threads of the shutoff manifold for damage. If threads are damaged, replace the shutoff manifold.

Inspect the capscrews for damaged threads, corroded surfaces, or a reduced diameter (capscrew stretching).

WARNING  When using solvents, acids, or alkaline materials for cleaning, follow the manufacturer’s recommendations for use. Wear goggles and protective clothing to reduce the possibility of personal injury.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

Shutoff Valve, Drain Valve, and Pressure Sensor – Clean the shutoff valve, drain valve, and pressure sensor with safety solvent.

Inspect the o-ring for cuts or wear. Replace the o-ring if necessary.

Inspect the threads for damage.

Replace damaged components if necessary.

WARNING  When using solvents, acids, or alkaline materials for cleaning, follow the manufacturer’s recommendations for use. Wear goggles and protective clothing to reduce the possibility of personal injury.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

Shutoff Manifold – Clean the shutoff manifold with safety solvent.

Use compressed air to clean the shutoff manifold and remove any debris.

Make sure the filter screen and orifice are in the fuel inlet side of the shutoff valve manifold.

Inspect the threads of the shutoff manifold for damage. If threads are damaged, replace the shutoff manifold.

Inspect the capscrews for damaged threads, corroded surfaces, or a reduced diameter (capscrew stretching).

NOTE: The pressure sensor and shutoff valve are located on the same side of the shutoff manifold.

NOTE: The pressure sensor is mounted above the shutoff valve.

Install the pressure sensor, the fuel shutoff valve, and the fuel drain valve.

Install the two capscrews to attach the aftertreatment fuel shutoff manifold to the bracket on the engine.

NOTE: The pressure sensor and shutoff valve are located on the same side of the shutoff manifold.

NOTE: The pressure sensor is mounted above the shutoff valve.

Install the pressure sensor, the fuel shutoff valve, and the fuel drain valve.

Install the two capscrews to attach the aftertreatment fuel shutoff manifold to the bracket on the engine.

• Install the aftertreatment injector lines. Refer to Procedure 011-051 in Section 11.
• Connect the wiring harness to the fuel shutoff valve, fuel drain valve and pressure sensor. Use the following procedure in the Electronic Control System Troubleshooting and Repair Manual, Bulletin 4021560. Refer to Procedure 019-444 in Section 19.
• Operate the engine and check for leaks.