Detroit Diesel EPA07, Workshop Manual, Page: 183 / 442

EPA07/10 DD PLATFORM WORKSHOP MANUAL - ENGINE
14.4 REMOVAL OF THE DD15 CYLINDER HEAD
Because optional and accessory equipment varies with the engine application, this procedure
covers only the basic engine. If the engine is equipped with accessories that affect cylinder head
removal, note the mounting details of each to assure correct installation at reassembly.
Remove the cylinder head as follows:
NOTICE:
If the cylinder head is to be replaced, the new head must be
thoroughly cleaned before installation to remove all rust and
preventive compound, especially from the fuel and oil galleries.
This can be done by immersion in a bath of fuel oil or mineral
spirits-based solvent and scrubbing out all openings with a soft
bristle brush. When clean, blow the head dry with compressed
air.
1. Steam clean the engine.
2. Disconnect the batteries. Refer to OEM procedure.
3. Drain the fuel system. Refer to section .
4. Drain the oil. Refer to OEM procedure.
5. Drain the coolant. Refer to OEM procedure.
6. Remove the turbocharger inlet pipe. Refer to OEM procedure.
7. Remove the rocker cover. Refer to section 1.2.
8. Disconnect the following electrical harness connections:
[a] Coolant Outlet Temperature sensor harness from the water manifold
[b] Delta-p sensor
[c] Intake Manifold Air Temperature sensor
[d] Throttle Valve
[e] Intake Air Temperature sensor
9. Remove fuel injector feed lines. Refer to section .
10. Remove high pressure fuel lines from fuel rail to high pressure fuel pump. Refer to section
.
11. Remove ampli fi er return line, needle return line and pressure limiting valve (PLV) lines.
Refer to section .
12. Disconnect fuel injector harness from the fuel injectors and engine brake solenoids.
[a] For Euro 6 DD Platform engines, remove One Piece Fuel Injector Wiring Harness.
Refer to section .
All information subject to change without notice.
DDC-SVC-MAN-0081 2010 Copyright © 2010 DETROIT DIESEL CORPORATION
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