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Inlet and Exhaust System
12---2
If any defects or wear are confirmed, the turbocharger should
be reconditioned.
If the engine does not work correctly and the turbocharger is
not defective or too worn, the fault could be traced to one of
the following items:
--- Blocked air filter.
--- Leakage in the inlet or exhaust systems. Leaking flange
seal.
--- Defective or wrongly adjusted injection pump.
--- Wrongly adjusted throttle linkage.
--- Defective or wrongly adjusted injectors.
--- Low fuel pressure (e.g. blocked fuel filter).
--- Low compression, wrong valve clearance.
D. Fitting turbocharger
Locate the cause of the defects on the turbocharger. Remedy
the fault before fitting the new turbocharger.
In order for the turbocharger to work satisfactorily, it is import-
ant 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 handbook spec-
ification.
The setting of the injection pump critically affects the function
of the turbocharger. The injection pump should be adjusted
according to the manufacturers instructions.
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. Connect the turbocharger to the exhaust manifold and
tighten down using a new gasket.
Turbocharger Schwitzer
1. Compressor cover
2. Lock nut
3. Compressor wheel
4. Bearing housing
5. Journal bearing
6. Turbine housing
7. Shaft and turbine wheel
8. By---pass channel
INLET AIR
EXHAUST GASES
LUBE OIL
3. Connect the inlet pipe and the exhaust pipe on the turbo.
4. Pour clean engine oil into the bearing housing through the
inlet oilway. This is very important in order to ensure that the
turbocharger is lubricated at the time of starting.
5. Connect the pressure and return oil pipes. Use a new seal.
Check that there are no tensions in the pipes when tightening.
6. Before starting, pull out the stop control and crank the en-
gine over with the starter motor so that the oil pressure rises.
Start the engine and check that there are no leaks.