Cummins ISX11.9 CM2250 – Service Manual 011-069   Rear EGR Connection Tube

WARNING  Wear safety glasses or a face shield, as well as protective clothing, to reduce the possibility of personal injury when using a steam cleaner or high-pressure water.

WARNING  The rear EGR connection tube can be hot. To reduce the possibility of personal injury, allow the engine to cool before removing.

• Use steam or high-pressure water to clean the engine, specifically around the rear EGR connection tube joints.
• Some applications may require removal of the EGR hose to service the rear EGR connection tube. Refer to Procedure 011-034 in Section 11.
• Some applications may require removal of the EGR valve to service the rear EGR connection tube. Refer to Procedure 011-022 in Section 11.
• Use protective caps from the Air Handling Clean Care Kit, Part Number 4919799, to cover the connection points.

WARNING  The EGR connection tubes can be hot. To reduce the possibility of personal injury, allow the engine to cool before removing.

Loosen the hose clamp on the outlet side of the rear EGR connection tube.

Loosen and remove the V-band clamp on the inlet side of the rear EGR connection tube.

Remove the rear EGR connection tube from the engine.

Discard the gasket.

Use protective caps from the Air Handling Clean Care Kit, Part Number 4919799, to cover the connection points.

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.

Clean the connection tube with safety solvent.

Make sure the gasket sealing surfaces at the EGR cooler outlet and the EGR hose inlet are free of packed soot and other debris.

Avoid wiping dirt or debris down into the EGR cooler or hose.

Dry with compressed air.

Inspect the ends and mating joints of the connection tube for signs of fretting, material transfer, cracks, or other damage.

Inspect the V-band clamps for signs of over-extension. The V-band must not be bent or cracked.

Inspect the V-band clamp threads for damage.

Replace the V-band clamp if damage is found.

Before installing the V-band clamp, coat the clamping surface with high temperature anti-seize compound.

Remove the protective caps used from the Air Handling Clean Care Kit from the connection points.

Apply lubricant to the EGR hose inlet and the hose end of the rear EGR connection tube.

Assemble the hose clamp over the inlet side of the hose.

Slide the rear EGR connection tube into the EGR hose.

Install a new gasket onto the pilot of the EGR cooler gas outlet.

Align the rear EGR connection tube with the EGR cooler gas outlet and loosely install the V-band clamp.

Tighten the V-band clamp.

Tighten the hose clamp.

• Remove the protective caps used from the Air Handling Clean Care Kit from the connection points.
• Install the EGR valve, if removed. Refer to Procedure 011-022 in Section 11.
• Install the EGR hose, if removed. Refer to Procedure 011-034 in Section 11.
• Operate the engine and check for leaks.