F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
Compass: Service and Repair
Vehicle Demagnetizing
VEHICLE DEMAGNETIZING
CAUTION: During demagnetizing, the demagnetizer coil pulls toward the vehicle. Place a cloth over the roof of the vehicle to protect the
vehicle surface if contact occurs. Make sure the cloth covers the front third and the entire width of the roof.
NOTE:
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The demagnetizing process requires the use of a demagnetizing coil commonly used by television service technicians to demagnetize television
tubes.
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To demagnetize, use a constant circular motion over the roof of the vehicle. Do not turn off the demagnetizer while sweeping the roof of the
vehicle to prevent remagnetizing ferrous materials contained in the vehicle.
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During the demagnetizing process, make sure the phenolic surface of the tool (the side opposite the handle) is closest to the vehicle surface.
1. Demagnetize the front third of the roof of the vehicle.
1
Turn on the demagnetizer at least 1 m (3 ft) away from the vehicle.
2
Holding the demagnetizer no more than 2.5 cm (1 in) from the roof and, starting on the passenger side, demagnetize the front third of the roof
closest to the windshield using a constant circular motion. Keep the circle radius within 30 cm (12 in) while sweeping across the entire surface
of the roof closest to the windshield. Continue the circular motion 4 times.
3
After the fourth pass and without stopping, move the demagnetizer at least 1 m (3 ft) away from the vehicle.
4
Turn the demagnetizer off.
2. NOTE: The demagnetizer must be located over the outside of the windshield no greater than 2.5 cm (1 in).
Demagnetize the inside rearview mirror mounting pad.
1
Turn on the demagnetizer at least 1 m (3 ft) away from the vehicle.
2
Using a circular motion, pass the demagnetizer over the outside of the windshield near the inside rearview mirror mounting pad. Without
stopping, move the demagnetizer at least 1 m (3 ft) away from the vehicle.
3
Turn the demagnetizer off.
3. Carry out the compass zone adjustment procedure. See: Compass Zone Adjustment
4. Carry out the calibration adjustment procedure. See: Compass Calibration
