Detroit Diesel — Removal of the DD13 Cylinder Head
Repair & overhaul
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- Support the heavy cylinder head properly with a lifting device.
Procedure
- Steam clean the engine; disconnect the batteries.
- Drain fuel, oil, and coolant; remove turbocharger inlet pipe.
- Remove the rocker cover.
- Disconnect electrical harness connections (coolant outlet temp, delta-p, intake manifold air temp, throttle valve, intake air temp).
- Remove high pressure fuel injector lines and high pressure fuel lines from rail to pump.
- Remove amplifier return line, needle return line and PLV lines.
- Disconnect fuel injector harness from injectors and engine brake solenoids.
- Remove the rocker arm shafts and the intake and exhaust camshafts.
- Remove the camshaft housing.
- Remove the EGR crossover tube and the two bolts attaching cold boost pipe to support bracket.
- Using Flywheel and Main Pulley Socket tool (J-45390), remove the 40 bolts securing the cylinder head.
- Using Cylinder Head/Engine Lifting Bar tool (W470589006200), remove the cylinder head.
- Remove and discard the metallic gasket from the cylinder block.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Detroit Diesel service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.