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...Technical Messenger Issue 03/2020 When replacing an air conditioning compressor, there are some important points you need to take into account to prevent direct failure of the new compressor and consequential damage to the air conditioning circuit. Flushing The system must be thoroughly f...

...Technical MessengerWhen replacing the coolant pump in EA 288-series 1.6 TDI and 2.0 TDI engines, various pump types can be installed. Starting in 2012, these engines were fitted with switchable coolant pumps during construction. To warm up the engine even faster, a shroud slides over the...

...Technical MessengerIn MAN radiators, if too much coolant is poured into the expansion tank, it escapes as the engine temperature rises and flows downward via the drains. The coolant escaping between the radia­tor and the expansion tank is then sometimes mistaken for a leak. This applies t...

...Technical MessengerCertain MAHLE radiators have been specially equipped with an additional connection on the expansion tank for vehicles produced to meet the Euro 6 emission standard. These radiators are nevertheless still compatible with vehicles conforming to emission standards Euro 4...

...Mahle Technical Messenger Leaks or coolant loss may occasionally be observed after repair work or corrective maintenance on the engine's cooling circuit. Yet they are seldom caused by the replacement component. Leaks are one of the most common complaints following the replacement of a c...

...Technical MessengerBefore installing Visco® fans and clutches, it is es-sential to ensure that the components have been properly stored and transported. There are two types of radiator fan: fans with an electric motor and Visco® fans driven directly from the internal combustion engine...

...Technical MessengerFinding out the correct oil quantity is absolutely key to avoiding consequential damage when replacing an air conditioning compressor. Always flush the refrigerant circuit As a general rule, the refrigerant circuit must always be flushed if an air conditioning compressor...

...Technical MessengerIf there are problems with the oil pressure after an oil and filter change in engines of the EA888 series, a missing standpipe is usually responsible.Function of the standpipeA spring-loaded standpipe made of plastic sits in the reception flange of the engine accessory h...

...Technical MessengerFollowing turbocharger damage, the charge air cooler must always be checked and, depending on the extent of the damage, replaced if necessary.Turbochargers and charge air coolersTurbochargers are among the most heavily stressed components in an engine. Since they're also...

...Technical Messenger A common question when working on air conditioning systems is which air conditioning compressor oil to choose. Different compressor oils are generally used depending on the application, vehicle manufacturer, and refrigerant. That's why the same questions come up time...



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