Hitachi 4HK1 Workshop Manual page 29

8. Disconnect the water return pipe from the
turbocharger assembly.
9. Remove the water return pipe from the water pump.
Note：
・ Remove the clip.
1. Water return pipe
10. Disconnect the water feed pipe from the
turbocharger assembly.
11. Remove the water feed pipe from the cylinder block.
Note：
・ Remove the clip.
1. Water feed pipe
12. Remove the exhaust pipe adapter from the
turbocharger assembly.
13. Remove the turbocharger assembly from the exhaust
manifold.
Note：
・ The turbocharger specification varies
depending on the machine manufacturer.
1. Exhaust manifold
2. Turbocharger assembly
3. Exhaust pipe adapter
6. EGR cooler assembly removal
1. Disconnect the water rubber hose from the EGR
cooler assembly.
1. Air leak pipe
2. Water rubber hose
3. Water rubber hose
2. Remove EGR pipe A from the exhaust manifold and
EGR cooler.
Mechanical (4HK1) 1B-5