(TA291-0322) Revised instruction for changing Turbo unit
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TECHNICAL ADVICE - Quick information for your help
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Bulletin Nbr:
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TA291-0322
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Date:
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July 2003
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Market:
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All
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Revised instruction for changing Turbo unit
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Saab 9-3 & 9-5 engines with turbo.
Analysis of warranty and exchange turbo units has shown that pollution
from the engine oil is one of the main reasons for repeat failures.
Contaminated oil from a damaged turbo can destroy a new unit in a very
short time!
THE ACTIONS BELOW MUST BE FOLLOWED BEFORE THE TURBO IS REPLACED!
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2.
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Fill with new engine oil and start the engine, let engine idle
until the thermostat has opened ( 90° )
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3.
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Drain the engine oil again.
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4.
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Change the oil filter and then fill the engine once again with
new oil.
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5.
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Replace the turbo unit (See WIS ).
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Cleaning the intake system
If the turbocharger has broken down mechanically or oil smoke exist,
it is extremely important to check that metallic particles, oil, or other
pollutants are not collected in the inlet system or the crankcase ventilation,
especially between the turbocharger and the inlet manifold. This will cause
further damage to the engine, if the inlet system is not cleaned thoroughly.
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1.
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Check and clean the inlet system including the crankcase ventilation,
from the air intake to the inlet of the turbocharger. This also includes replacing
of the air filter (if necessary) and cleaning of the air filter housing.
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2.
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Check the MAF sensor for contamination.
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3.
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Clean the inter-cooler (clean with solvent and blow dry) and all
pipes on the pressure side of the turbocharger to the inlet manifold.
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