Replacing The Lift Motor - Precor TRM 885.v2 Service Manual

Replacing the Lift motor

This procedure calibrates the replacement lift motor prior to installation.
1. Set the treadmill circuit breaker to OFF.
2. Remove the hood.
3. Calibrate the replacement Lift Motor
a Disconnect the lift motor connector from the motor controller (MC) "LIFT" input port,
Tip: It may be easier to disconnect/connect the MC connectors by removing the MC from its
note mounting bracket and lifting to access the connections.
b Lay the replacement lift motor on the floor in front of the treadmill with space to allow lift
actuator jack screw movement up and down. Connect the lift motor connector to the MC
"LIFT" input port.
c Set the treadmill circuit breaker to ON. The treadmill will begin to auto-calibrate the
replacement lift motor to the home position (0% incline position).
Warning: Be aware that the lift motor actuator will begin to auto-calibrate causing movement to
note the lift motor actuator when power is applied to the treadmill.
d Set the treadmill circuit breaker to OFF and disconnect the power cord. Disconnect the
replacement lift motor connector from the MC "LIFT" input port.
e Set the lift actuator 0% incline reference gap to 1.2 inches as measured between the top of
the lift actuator tube nut to the bottom of the lift motor actuator housing. Firmly hold the jack
screw from turning while adjusting (turning) the lift actuator tube nut.
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