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| Up to 01.04, combustion air blowers -V6- were installed on which - particularly in the case of horizontally installed auxiliary heaters - residual fuel could penetrate into the motor by way of the shaft (thus impeding operation, resulting in insufficient combustion air being conveyed into the combustion chamber in auxiliary heating mode and causing the auxiliary heater to give off smoke). As of 01.04, combustion air blowers -V6- have been installed with a modified seal at the shaft. |