4-16 Repair/Replacement and Calibration
MedTrack CR60 Rehabilitation Treadmill Service Manual
c. Simultaneously press
Faster
,
Up
, and
Down
. The display will ready
0.0 P000 0.0.
d. Simultaneously press
Stop
,
Faster
, and
Slower
to exit service mode.
The display should read 0.0 P555 0.0. You are now in open loop
mode.
♦
While in open loop mode the treadmill takes about two seconds to
react to a command.
9. (Requires two people) Decrease grade until rack gears start bouncing
on the pinion shaft. Hold the limit switches closed to let the rack gear
travel beyond its normal range. Rotate the grade potentiometer as
required to maintain a positive grade display.
10. Turn off the treadmill circuit breaker and unplug the treadmill.
11. Lift rack gears straight out top.
Reassembling the Rack Gears
Install new rack gears at the same time so that they are parallel and extend
an equal distance through the headframe.
1. Restore power to the treadmill.
2. Enter open-loop grade mode as described above.
3. Insert rack gears into headframe.
4. Decrease the grade until the gears bounce two or three times, then
increase the grade. This should cause both rack gears to mesh in
exactly the same place.
5. Run the rack gears down past the bottom of the headframe. Hold the
limit switches closed to let the rack gear travel beyond its normal
lower limit.
6. Check below the headframe to verify that the rack gears are meshing
properly. The gears should protrude an equal distance.
7. Run the rack gears down until there is enough room to replace the
wheels.
8. Bolt the wheels to the rack gears.
a. Replace washers used as spacers in the correct arrangement.
b. Install wheel bolts.
c. Torque the bolts tightly to 46 ft-lb
±
4 ft-lb.
9. Increase the grade until the wheels touch the floor.
10. Grease the rack gears with wheel bearing grease.
11. Remove the blocks that support the headframe.
12. Reinstall the grade pot gear.
13. Calibrate the grade potentiometer as described on page 4-28.
14. Turn the treadmill power off.
