Precor Energy Series Service Manual page 46

6. Slowly rotate the drive motor flywheel while pressing the drive belt off of the drive roller
pulley. Continue until the drive belt "walks" completely off of the drive roller pulley.
7. Using a fine tip marker or scribe, place a position reference mark on the right hand drive
roller mounting bolt directly in front of the drive roller shaft. The bolt is being marked so that
the drive roller can be returned to the exact same position.
8. Remove the drive roller mounting bolt. Remove the drive roller from the treadmill.
9. Slide the replacement drive roller through the running belt and through the drive belt. Insert
the drive roller shaft left end into the doubler plate hole. Hand start the drive roller
mounting bolt.
10. Tighten the right drive roller bolt until the position reference mark aligns with the front edge
of the drive roller shaft. The drive roller should now be positioned to the original position
and square to the treadmill frame.
11. Slowly rotate the drive motor flywheel while pressing the drive belt onto of the drive roller
pulley. Continue until the drive belt "walks" completely onto the drive roller pulley. Be sure
that the drive belt is fully onto and correctly aligned on the drive roller pulley.
12. Alternate tightening the two Take-up roller mounting bolts, in order to tighten both ends
evenly, until both running belt gauges again read exactly 3%.
13. When both gauges again read 3% the belt is at its original tension. It will now be necessary
to fine adjust the running belt tracking, however if this procedure was carefully followed,
the belt tracking should be very close.
14. Remove both belt gauges from the running belt.
15. Start the treadmill and operate it at 2 mph. Observe the running belt tracking. If the belt drifts
from center, only use the right take-up roller bolt to re-center the belt tracking as follows:
a. If the belt drifts to the right, slowly turn the right take-up roller bolt clockwise until the
©2014 Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law
Page
Page 46
of 5446
Page 46