BowFlex Revolution, How To Replace the Engine Cam Drive Assembly

Learn the steps of how to replace the engine drive assembly or cam on a Bowflex Revolution home gym.

There are two engine drive assemblies or cams per machine. One for each side. The OEM part number for the engine drive assembly (cam) is 000-5750.

Tools Required:

  • Allen Wrenches, 3/32", 1/8" & 7/32"
  • Flathead Screwdriver
  • Phillips Screwdriver


  • Start with the 1/8" Allen wrench and remove the top cover. There are 4 bolts you will remove. Set the cover aside.
  • Now, remove the shroud clip that holds the side shrouds together under the top inside.
  • Remove the screw holding the tension adjust knob cap using the Phillips screwdriver.
  • After removing the screw, gently pry the cap out of the knob using the screwdriver.
  • Remove the 4 screws holding the tension adjust knob. Remove the knob and set it aside.
  • Still using the Phillips screwdriver, remove the 5 screws holding the shroud from the side being serviced.
  • Remove the shroud and set it aside.
  • Using the 7/32" Allen wrench, loosen the bolts of the tension shaft holder. There are 8 bolts to loosen.
  • Once the tension shaft is loosened, pull it through until it clears the engine or cam that is being replaced.
  • After the tension shaft clears the engine (cam), remove the pre-tension pack. Using the 3/32" Allen wrench, remove the 6 bolts from the pre-tension pack. Set the pre-tension pack aside.
  • Use the flathead screwdriver to pry up the bottom tab of the lock collar and remove the lock collar from the engine (cam).
  • Remove the drive engine (cam) from the axle.
  • Remove the lower spool using the 7/32" Allen wrench.
  • Installation of the new engine (cam) is a reverse procedure. Note the Tech Tips for installation.

  Tech Tips

  1. Note that during the installation of the lower spool, the strap must be wrapped or wound counterclockwise.
  2. While re-positioning the tension shaft, note to slide the shaft slowly through until it clicks in place. If no click is heard or felt, make certain the shaft is centered. Do this by measuring the exposed amount of shaft on each side of the unit.
  3. Be sure to properly tension the shaft by tightening the screws in order as numbered on the tensioner. Tighten the screws in order. 1&1, 2&2, 3&3, and last 4&4.
  • Check the operation of the machine. This completes how to replace the cam or engine drive assembly found on Bowflex Revolution home gyms.
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