Rocker Arm/Shaft Assembly Removal/Installation - Detroit Diesel EPA07 Series 60 DDEC VI Troubleshooting Manual

3.5 WORN OR DAMAGED VALVE OR CYLINDER KIT
To avoid injury from flying debris when using compressed
air, wear adequate eye protection (face shield or safety
goggles) and do not exceed 276 kPa (40 psi) air pressure.
All the fuel must be removed from the cylinder head before
removing injectors. This prevents the fuel from entering the
cylinder and causing cylinder wall lube oil wash down or a
hydrostatic lock at startup.
5. Blow low pressure regulated air no more than 207 kPa (30 psi ) into the inlet fitting for 20
to 30 seconds or until all the fuel is purged from the head.
6. Clean and remove the rocker cover, it is not necessary to remove the bottom rocker cover.
If equipped with Jake Brakes remove the Jake Brake assembly.
7. Remove all the rocker shaft mounting bolts and nut from the front or rear rocker shaft
assembly. Using rocker arm lifter (J–35996–A), see Figure 3-1, lift the assembly straight
up and off of the head and place in a clean area on the bench.
Figure 3-1

Rocker Arm/Shaft Assembly Removal/Installation

8. Use tool J-47808 to remove the 4–pin electrical connection from the injector.
9. Disengage the locking tang on the harness plug connection, grasp the connector and
gently pull it from the socket.
10. Remove the injector hold down clamps.
3-10
EYE INJURY
NOTICE:
Copyright © 2007 DETROIT DIESEL CORPORATION
All information subject to change without notice.