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

CAUTION

Do not use petroleum products on the EGR cooler coolant line o-rings or press-in-place seals. The o-rings and press-in-place will swell and cause the connection to leak.

Install a new o-ring and press-in-place seal on the EGR cooler coolant supply tube.

Lubricate the o-ring with clean engine coolant, soapy water, or vegetable oil, to aid in installation.

SMALL | MEDIUM | LARGE

Insert the EGR cooler coolant supply tube into the water pump outlet.

Install the EGR cooler coolant supply tube retaining clamp and capscrew.

NOTE: Do not tighten the capscrew at this time.

Attach the EGR cooler coolant supply tube into the EGR cooler coolant inlet.

Install the mounting capscrews to the EGR cooler.

NOTE: Do not tighten the capscrew at this time.

SMALL | MEDIUM | LARGE

Tighten the capscrews in the following sequence.

Tighten the EGR cooler coolant supply tube mounting capscrews (1).

Torque Value: 20 n.m [177 in-lb]

Tighten the EGR cooler coolant supply tube retaining clamp capscrew (2) to the water pump.

Torque Value: 20 n.m [177 in-lb]

SMALL | MEDIUM | LARGE

Install the EGR cooler coolant vent line to the rocker housing and the EGR cooler.

Torque Value: 14 n.m [124 in-lb]

SMALL | MEDIUM | LARGE

CAUTION

Do not use petroleum products on the EGR cooler coolant line o-rings or press in place seals. The o-rings and press in place seals will swell and cause the connection to leak.

Install the press-in-place seal and o-ring on the EGR cooler coolant return tube.

Lubricate the o-ring with clean engine coolant, soapy water, or vegetable oil to aid in installation.