Cylinder Head Assembly; Removal - Hitachi 6HK1 Workshop Manual

1B-4 Mechanical (6HK1)

removal

1. Battery ground cable disconnect
1. Disconnect the battery ground cable from the battery.
Caution：
・ Do not disconnect the battery cable for 3
minutes after turning OFF the ignition switch.
2. Coolant drain
1. Remove the radiator cap from the radiator.
Caution：
・ Do not loosen the radiator cap or sub-tank cap
when the coolant temperature is high.
・ Because steam and boiling water can burst out
from the radiator and possibly cause burns,
check that the engine has cooled.
2. Remove the drain plug from the radiator.
3. Drain coolant from the radiator.
Note：
・ If the EGR cooler has an air bleeding plug,
loosen the plug and remove it.
・ With the pressurized reserve tank
specification, it is not necessary to bleed the
air.
1. Air bleeding plug
2. Gasket
4. Remove the drain plug from the cylinder block.

Cylinder head assembly

3.
4.
1. Drain plug
5. Discharge coolant from the engine.
6. Install the drain plug to the cylinder block.
7. Install the drain plug to the radiator.
Engine harness disconnect
1. Disconnect the engine harness from the engine
assembly.
Note：
・ Disconnect each connector.
Turbocharger assembly removal
1. Remove the air cleaner duct from the air cleaner
assembly and the turbocharger assembly.
2. Remove the air intake hose from the turbocharger
assembly and the intercooler.
3. Remove the exhaust pipe from the turbocharger.
4. Disconnect the oil feed pipe from the turbocharger
assembly.
Note：
・ Remove the clip.
5. Remove the oil feed pipe from the pipe bracket.
Note：
・ Remove the clip.
6. Disconnect the oil return pipe from the turbocharger
assembly.
7. Remove the oil return pipe from the cylinder block.
8. Disconnect the water return pipe from the
turbocharger assembly.