Trackmaster TMX428 - Replacing the Speed Sensor from 2 Wire to 3 Wire

TRACKMASTER Ch. 10 Removal and Replacement of Components
317-160-406 Rev 4 TMX428 TMX428CP & TMX58 Service Manual 103
May 2021
Replacing the Speed Sensor from 2 Wire to 3 Wire
Tools Required
1/4” Hex Nut Driver or Flat Blade Screwdriver
Long Nose Pliers
Grounding Wrist Strap
Approximate time to complete: 20 min
1. Turn the treadmill main power switch to the OFF position.
2. Unplug the treadmill plug from the wall receptacle.
3. Allow the treadmill to discharge for 1 minute.
4. Remove the 2 wire connector from J10.
5. Feed wire connector thru hole on actuator support.
6. Slide 3 Wire Speed Sensor thru rubber grommet.
7. Adjust the speed sensor to the magnet on the flywheel to approximately 1/4”