Precor TRM 885.v2 Service Manual page 86

Note: The deck has two usable surfaces. If only one surface has been used the deck can
be flipped to utilize the second side. If both surfaces have been used a new deck must be
installed.
6. Slip the running belt off the deck and discard. If the second side of the deck has already been
used replace it with a new deck.
7. The new running belt will have an arrow with the word RUN pointing in one direction printed on
the underside. The arrow indicates the correct direction of travel for the belt. Premature belt
failure will occur if the belt is installed incorrectly. Slip the new running belt onto the deck and
carefully place them back onto the treadmill. The printed belt information should be on the right
hand side of the belt.
8. Secure the deck using the previously removed screws through the rear of the deck to the
pivoting deck mounts. Torque the bolts to 50-55 in-lbs.
9. Install the two previously removed screws into the front of the deck to the Tinnerman clips on
the GFX cushion. Torque the screws to 20 in-lbs.
10. Install the Drive and Take up Rollers, install the drive belt onto both pulleys.
11. Center the belt in the frame between the rollers front to back.
Note: Proper tensioning of the belt requires the use of two tensioning gauges, Precor part
number PPP000000020007101. These must be used to ensure proper tensioning of the belt,
and proper force on the roller bearings.
12. Install the two belt tensioning gauges on both sides of the belt, across from each other. Set the
dials to an accurate reference point for starting the measurement. When properly tensioned the
belt will be 0.55% of stretch, or 5.5 tick marks away from the starting reference point.
13. Begin tightening the bolts on the rear, moving left and right a few turns at a time to ensure that
the belt is being stretched evenly. Continue turning both sides until the gauges read 5.5 ticks
away from the beginning reference. For example, if 3.0 is your starting point, tighten until you
reach 3.55.
14. Verify the running belt tension and tracking, go to "Tension and Tracking the Running Belt"
adjustment procedure.
New Belt Breakin Procedure
Note: After the belt is correctly adjusted for tension and tracking, walk on the belt to
initialize the break-in wax on the deck surface.
16. Set the treadmill to 3 mph and walk on the center of the belt, moving from the front to the back,
four times total. Repeat this on the left, then on the right.
17. Stop the belt, then while standing to the side of the tread start a manual program and run the
speed up to max. Let this run at max speed for 3.5 minutes. This is to clean up any break in
wax that may have become loose during the walking phase.
Note: It may be necessary to press resume or speed up several times as the Auto Stop
feature will detect that no one is walking on the belt. Restarting the speed will not
negatively impact the process.
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