Check that all air pipes and hoses and vacuum lines are correctly fitted and that there are no leaks before carrying out tests or repairs.
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Hose connections and air pipes and hoses must be free of oil and grease before assembly.
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Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue.
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To ensure that the air hoses can be properly secured at their connections, spray rust remover onto the worm thread of used hose clips before installing.