- - Clean the gasket regularly with a mild solvent and a soft brush to remove any deposits or contaminants.
Choose a seal that has the appropriate dimension needed for your application. The seal should properly fit the space between the stationary and rotating parts.
This applies only to a mechanical fuel pump on the side of the engine.
Oil seals keep contaminants separate from the lubricants that keep rotating shafts and precision bearings in good working order. Oil seals are also known as rotary shaft seals, lip seals, and shaft seals.
Replacing a crankcase side-cover gasket
This is often the material of choice for the oil industry due to the extensive temperature range the material can sustain. Benefits include:
The sealing element makes up the interior of the oil seal, and the materials commonly used are:

spark plug coil. If you notice any of these symptoms, it is important to have the spark plug coil inspected by a professional mechanic.
Special exceptions still apply within the Volkswagen group. With PTFE oil seals, an aluminium or plastic housing is used in many different engine series. The Top Dead Centre (TDC) signal is no longer measured at the flywheel, but directly using a sensor on the rear crankshaft flange and integrated sensor in the oil seal. Special procedures and tools must be used for the disassembly and assembly of these parts.
Before installing the oil seal, check the seal carefully for damage. Make sure there are no cuts or tears around the seal lip, which is the two layers inside the oil seal.
Another thing to consider is the outer diameter of the oil seal. Any damage detected prior to installation will make it impossible to use further.


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