Resistance Issues
Applies To
All Spinner Series Bikes
Issue
Increasing the resistance knob does not apply typical or no increased resistance to the fly-
wheel.
Cause
l
The brake pad-flywheel gap is out of specification.
l
Damaged brake pads.
l
The resistance knob shaft mechanism has failed and is not adjusting the caliper brake
pad arms.
l
Caliper strain gauge cable has either disconnected or is bad.
l
LPCA
1
failure.
l
Caliper strain gauge has failed.
Solution
Verify that the resistance knob shaft is varying the caliper brake pad-flywheel distance as
the resistance is varied from minimum resistance to maximum distance.
l
If not, verify the resistance knob and shaft operation, see
.
Increase the resistance to maximum and make sure the brake pad-flywheel gap is within
spec, see
"Brake Pad Adjustment" on page 23
Inspect the brake pads for physical damage. Replace if damaged, see
Verify that the console is reading torque. While pedaling, access the console service menu,
select the
Torque
2
parameter and verify that the torque varies with change in resistance
level.
1
Lower Printed Circuit Assembly board; also refered to as the Lower PCA or simply as the
lower board. On treadmills, it is the console to base function interface and the motor con-
troller unit (MCU). On self-powered units, it is the lower PCA console to base function inter-
face.
2
Torque is a measure of the force that can cause an object to rotate about an axis. Bolt/nut
example: 5 NM torque is equivalent to 5 newton's of force applied one meter from the center
of the bolt, 6 ft-lb is equivalent to 6 lbs of force applied 1 foot away from the center of the
bolt.
Contact Precor Customer Support at [email protected] or 800.786.8404 with
any questions.
Page 160
6 Troubleshooting
System Troubleshooting Procedures
