Workshop Manual

2.6 DD15 EGR COOLER CLEANING PROCEDURE TO REMOVE EXCESS FUEL FROM COOLER AFTER

ENGINE BRAKE SOLENOID FAILURE

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

3. Remove the e xhaust gas crossover tube/

lifting eye (2) a nd venturi ( 3).

4. Place a towel over the outlet of the EGR cooler and retain it with a zip tie.

To avoid injury from ﬂying debr

is when using compressed

air, wear adequate eye protection (face shield or safety

goggles) and do not exceed 40 psi (276 kPa) air pressure.

5. Using a rubber tipped blow gun blow compressed shop air into the individual t ubes in

the EGR cooler to clear any excess fuel, soot, and carbon.

6. After performing t

he cleaning procedure, refer to section to install the:

[a] mixer pipe.

[b] exhaust gas crossover tube/lifting eye (EPA07 engines) and exhaust gas crossover

tube (EPA10 eng

ines).

[c] venturi.

7. If the cooler has an excessive amount of buildup that cannot be removed, replace the

EGR cooler

. Refer to section .

All information subject to change without notice.