Inlet Cover - Hitachi 4HK1 Workshop Manual

3. Fan guide bracket
3. Disconnect the radiator upper hose from the water
outlet pipe.
4. Remove the EGR cooler water pipe from the engine
assembly.
Note：
・ Remove the EGR cooler water feed pipe and
EGR cooler water return pipe.
1. EGR cooler water return pipe
2. EGR cooler water feed pipe
9. Inlet pipe removal
1. Disconnect the harness connector from the boost
pressure/boost temperature sensor.
2. Remove the harness clip from the inlet pipe.
3. Remove the inlet pipe from the case.

1. Inlet cover

2. Gasket
3. Inlet pipe
4. Boost pressure/boost temperature sensor
10. Oil level gauge guide tube removal
1. Remove the oil level gauge from the oil level gauge
guide tube.
2. Disconnect the oil level gauge guide tube from the
cylinder head cover.
3. Disconnect the oil level gauge guide tube from the
common rail (fuel rail) assembly.
4. Remove the oil level gauge guide tube from the
crankcase.
1. Oil level gauge guide tube
2. Cylinder head cover
3. Crankcase
4. Common rail (fuel rail) assembly
11. Glow plug removal
1. Remove the glow plug connector from the glow
plug.
2. Remove the glow plug from the cylinder head
assembly.
Mechanical (4HK1) 1B-7