In order for the turbocharger to work satisfactorily, it is important that the engine oil is in good condition.
Likewise, the oil should be to the correct quality specification. The air filter and oil filter should be serviced
according to the Instruction Manual specification.
The adjusting of the engine control system affects definitely to the function of the turbocharger. The
adjusting have to be made according to the manufacturer's instructions.
Procedure
1.
Check the tightness of the intake and exhaust manifolds, and that they are securely fastened. Ensure
that there are no loose carbon or rust particles, or other foreign objects in the manifolds.
2.
Check the tightness of the intake and exhaust manifolds, and that they are securely fastened. Ensure
that there are no loose carbon or rust particles, or other foreign objects in the manifolds.
3.
Connect the inlet pipe and the exhaust pipe to the turbo.
4.
Pour about 0.1 litres of pure engine oil into
the bearing housing before attaching the
pressure oil pipe. This is very important in
order to ensure that the turbocharger is
lubricated when starting.
5.
Connect the pressure and return oil pipes.
Use a new seal. Check that there is no
tension in the pipes when tightening.
6.
Start the engine and check that there are no
leaks.
Fig. 99
3.12.5 Checking the EGR actuator voltages
The EGR actuator calibrates itself automatically
(minimum position) before every start of the
engine.
When the engine is running, the EGR actuator
operates the EGR valve according to engine speed
and load% (stepless control). When the engine is
idling, the EGR valve remains closed. At engine
speeds over 1500 rpm and when the load is heavy
enough, the EGR actuator starts to adjust the EGR
valve.
The EGR actuator is controlled via can-bus and
operated with 12V supply voltage.
In case of actuator malfunction the electronic
control unit (ECU) activates an error code, which
reduces engine power and running speed. Power
is limited to ~75% of the maximum and the speed
is limited to 1800 rpm.
Check the supply voltage to the EGR actuator and
the can-bus voltages carefully.
Fig. 100
3. Maintenance
4th Generation Engines 3-59
8370 79492
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