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...Technical Information Alternator bearing damage Damage The symptoms of bearing damage on alternators are heavy noise, radial or axial play in the rotor, or a blocked rotor. Causes Heavy vibrations or the entry of water should be considered as causes of bearing damage on al...

...Technical Information Alternator corrosion damage Damage Corrosion damage on alternators can be recognized v ia heavy corrosion on the contacts and on the connection terminals. Causes As a rule, alternators are splash proof as standard. If extreme water entry occurs duri...

...Technical Information Alternators with heavily oil-fouled vacuum pump Damage In the case of some vehicles with diesel engines, the vacuum required for the brake booster is created by a vacuum pump fitted to the alternator. A frequently-occurring problem is that these alternators are...

...Technical Information Alternator Damage due to short-circuit/polarity reversal Damage Damage due to short-circuits/polarity reversal on alternators can be recognized due to interrupted or unsoldered power diodes, an unsoldered stator winding and/or charred rectifier bodies....

...Technical Information Connector seal General information One frequently occurring problem is the rubber seal falling out unnoticed when the connector is pulled apart. This small rubber seal fulfils very important tasks that are necessary for the perfect operation of electrical/electro...

...Technical Information “Pasting-up” of starters Damage If a “pasting-up” of starters occurs, this may be noticed due to increased noise development and damaged starter pinions. In extreme cases, the motor ring gear may also be badly damaged. Causes The “pasting-up” occu...

...Technical Information Generator Diagnostics For fault diagnosis on generators consider the following principles: · Don't disconnect, fit or short circuit terminals when the engine is running and the generator working (voltage spikes lead to damage ). · Don't measure...

...Technical Information Noise emitted in the area of the vehicle auxiliaries drive system 1.9 TDI engines with tensioning arm (OE no.): 038 903 315 AE Models: Audi: A3 Ford: Galaxy Seat: Alhambra, Ibiza IV, Leon, Toledo II Skoda: Octavia VW: Bora, Golf IV, Multi...

...Technical Information Oil pressure switch General The oil pressure switch is installed in the oil circuit of the engine. It monitors the oil pressure and turns off or on a warning light or controls an oil pressure indicator.Function The oil pressure switch is normally closed.When the ignit...

...Technical information Information on Hella signal horns General instructions on the correct mounting of the signal horns • To avoid problems with the tone quality, the signal horn should always be installed in the vehicle with the original bracket. • Use of another bracket will...



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