Cummins ISX11.9 CM2250 – Service Manual 011-031   EGR Cooler Coolant Lines

CAUTION  Be sure all the components are clean and free of debris that can cause damage to o-ring seals.

Disconnect the EGR cooler coolant vent line from the rocker housing and the EGR cooler.

Remove the EGR cooler coolant return tube mounting capscrews at the EGR cooler coolant outlet and at the oil cooler housing.

Discard the press in place seal at the EGR cooler coolant outlet.

Slide the EGR cooler coolant return tube at the oil cooler housing rearward, to disengage the o-ring seal.

Remove the EGR cooler coolant return tube from the engine.

Remove and discard the o-ring.

Remove the EGR cooler coolant supply tube mounting capscrews at both the EGR coolant inlet and the water pump housing.

Discard the press in place seal at the EGR cooler coolant inlet.

Slide the EGR cooler coolant supply tube rearward until the EGR cooler coolant supply tube is disengaged from the water pump outlet.

Remove the EGR cooler coolant supply tube from the engine.

Remove and discard the o-ring.