Nautilus StairMaster ClubTrack 2100 Series, Service Manual

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ClubTrack
®
2100 Series Treadmill Service Manual
2.2 Remove the grade actuator ground wire using a 10-millimeter socket wrench.
2.3 Remove the two (2) 8-millimeter hex bolts and shoulder bushings that secure the swing arm to the
grade nut block.
2.4 Remove the 3/8-inch hex bolt, washer, lock washer, and nut from the headframe mounting bracket, and
remove the grade actuator motor. The bolt is located underneath the motor.
2.5 Withdraw the steel cylinder bushing from the bronze bearing.
2.6 Unscrew the grade block containing the actuator nut from the actuator drive screw.
2.7 Remove the two (2) 4-millimeter hex screws and lock washers securing the grade nut.
3.0 Install the Replacement Grade Actuator Motor
3.1 Lubricate and insert the steel cylinder bushing on the new actuator bronze bearing.
3.2 Mount the actuator grade motor onto the headframe bracket, and secure the motor with the 3/8-inch
hex bolt, flat washer, lock washer, and nut.
3.3 Reinstall the ground wire using screw and star washer previously remoeved in Step 2.2.
3.4 Insert the black wire into pin 4 on P17, as shown below, and plug P17 onto the VSD board, lip-side up.
Bolts
Replacing the Grade Actuator Motor
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