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...Technical Messenger 09|2021 Cavitation damage in the cooling circuit Do you want to know how you can avoid cavitation damage in the cooling circuit? Serious damage can result from steam bubbles in the cooling circuit. In the worst case, large holes can appear on the surface or there is a...

...Causes of overload protection tripping in air conditioning compressors When an A/C compressor's overload protection is triggered without any mechanical damage occurring, there are common suspects you should look for. In addition to severe speed fluctuations, excessive engine torque, o...

...Technical Messenger Air conditioning compressors have an overload protection feature that protects auxiliaries if the compressor jams. However, this fuse can trip even when there is no mechanical damage to the compressor. A predetermined breaking point separates the shaft from the pulley w...

...Hot brake judder Whenever you bring two surfaces into contact, and at least one of them is moving at high speed, the result will be friction. This friction creates heat, which is transmitted to other parts of a car's braking system. Brake discs are usually made of cast iron, and when they...

...Causes of noise Hints for fault diagnosis of noises and compressor exchange The following notes should be observed for fault diagnosis (noise sources) and before every compressor exchange: • Check all the retaining bails and mounting points for cracks, missing bolts or nuts. Any vibra...

...Mahle Technical Messenger Issue no. 08/2023 Causes of a defective resistor on the interior blower Replacing a defective resistor on the interior blower often fixes the obvious issue without addressing its underlying cause. If the motor of the interior blower will only run at its hi...

...Technical Messenger 08 | 2023 Causes of a defective resistor on the interior blowerBroken interior blower resistors caused by a blown thermal fuse are often more a symptom than the root cause of the problem. Nonetheless, faulty resistors need to be replaced. Make sure to check if the fan w...

...Cause and Effect - Non-starting 2016 1.4 TFSI Audi A4 When it comes to diagnosing an issue, there are two things we need to remember, cause and effect. These are better known as the initial symptoms, the reason we are diagnosing the vehicle in the first place. The underlying root cause...

...In this video the Meyle Mechanics show how to replace the cardan shaft centre bearing and flex disc on a VW Touareg or Porsche Cayenne without having to change the entire cardan shaft assembly. The MEYLE cardan shaft centre bearing kit is available under MEYLE part number 100 152 2001. To...

...Capillary action/lambda sensor wiring This video explains how and why lambda sensors get destroyed by oil. It explains how the oil get there and how to solve this problem....



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