Workshop Manual

11.5 EGR COOLER CLEANING PROCEDURE TO REMOVE EXCESS OIL FROM EGR COOLER AFTER

DD15 TURBOCHARGER FAILURE

Check as follows:

NOTICE:

This cleaning procedure must be followed after replacing a DD15

turbocharger so that any failure will not cau s e excessive fuel, oil,

or coolant to enter the exhaust system. Failure to perform this

procedure could cause severe eng ine damage.

1. Shut off the engine, apply the parking brake, chock the wheels, and perform any other

applicable safety steps.

2. Remove the EGR hot pipe (4) and gaskets (3) and inspect for any signs of liquid or

moisture. The hot pipe and EGR cooler inlet should have a black dry soot residue inside.

[a] If liquid or moisture is present in the pipe, go to the next step.

[b] If there is no sign of liquid or moisture in the pipe or EGR cooler, install the hot pipe.

No further action is required.

3. Remove the mixer pipe (4) from the cold boost pipe (1). Refer to section .

All information subject to change without notice.