Crankshaft Seal Flange With Integrated Engine Speed Sensor Wheel - Volkswagen 2004 Jetta Introduction Manual

Crankshaft Seal Flange with Integrated
Engine Speed Sensor Wheel
The crankshaft seal flange with integrated
engine speed sensor wheel is a new
feature. The crankshaft seal flange seals the
cylinder block on the flywheel end. The seal
is made of heat-resistant and nonwearing
polytetrafluoroethylene (PTFE) plastic.
The engine speed sensor is a Hall effect
sensor mounted in the crankshaft seal
housing and consists of a steel ring
mounted in rubber. This rubber material
contains embedded magnetized metal
chips that have an alternate north and south
polarity with a large north pole to serve as a
reference for the engine speed sensor. The
sensor wheel is precisely press-fit into the
crankshaft flange.
Crankshaft
Seal Flange
Engine Speed
Engine Speed
Sensor Wheel
Sensor
North Pole
South Pole
Engines
S318_051
S318_049
33