Hitachi 4HK1 Workshop Manual page 32

1B-8 Mechanical (4HK1)
12. Injection pipe removal
1. Remove the clip from the bracket.
2. Remove the injection pipe from the injector and the
common rail assembly.
Caution：
・ Do not reuse the removed injection pipe.
・ Seal the common rail and injector to prevent
foreign material from entering.
1. No. 1 injection pipe
2. No. 2 injection pipe
3. No. 3 injection pipe
4. No. 4 injection pipe
5. Common rail (fuel rail) assembly
6. Fuel supply pump
7. Fuel pipe
13. Fuel pipe removal
1. Remove the fuel pipe from the fuel supply pump and
the common rail assembly.
Note：
・ Remove the clip.
Caution：
・ Do not reuse the gasket.
14. Fuel leak off pipe assembly removal
1. Disconnect the fuel leak-off pipe from the cylinder
head assembly.
2. Remove the fuel leak-off pipe from the fuel supply
pump.
Note：
・ Remove the eyebolt tightened together with
the fuel feed pipe.
3. Disconnect the fuel leak-off pipe from the common
rail assembly.
4. Remove the fuel leak-off pipe from the case.
Note：
・ Remove the clip.
1. Common rail assembly
2. Cylinder head assembly
3. Fuel leak-off pipe
4. Fuel supply pump
15. Common rail assembly removal
1. Disconnect the harness connector from the fuel
pressure sensor.
2. Remove the common rail assembly from the inlet
cover and the common rail bracket.
3. Remove the common rail bracket from the oil cooler
assembly.