Precor 9.31 Manual page 50

Procedure 6.12 - Running Belt and/or Deck Replacement
This procedure is to be used to replace the running belt and/or deck while maintaining the drive
belt's original tensioning and setting the running belt's tension and tracking. Two running belt
gauges, Precor part number 20007-101, are required. It is important that this procedure be
followed to maintain correct drive belt and running belt tension. Over tensioning the belt will lead
to premature running belt wear, premature driver roller bearing failure and premature take up
roller bearing failure. This procedure addresses decks that can be flipped, however it is important
to note that only double sided decks can be flipped. Single sided decks must be replaced.
1. Remove the end caps from the rear of treadmill to expose the take up roller mounting bolts.
2. Remove the treadmill's motor cover.
3. If applicable, remove the finger guard from in front of the take up roller.
4. Remove both take up roller mounting bolts. Remove the take up roller from the treadmill.
5. 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.
6. Using a fine tip marker or scribe, place a 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. The use of a fine marking line allows for more
Drive Belt
Mark Bolt Here
Drive Roller Pulley
9.31, 9.33, 9.35 Treadmill
Take Up Roller
Mounting Bolt
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