Stairmaster 7000 manual To reinstall the sprocket assembly

PARTS REMOVAL AND REPLACEMENT

7.Have an assistant support the sprocket assembly. Loosen and remove the nuts on the pillow block bearing housing.

8.Remove the sprocket assembly from the frame.

9.Loosen the two set screws on both of the pillow block bearing collars and remove the pillow block bearings from the sprocket axle.

10.To reinstall the sprocket assembly:

•Slide the pillow block bearings on both ends of the sprocket axle. Do not tighten the set screw on the pillow block bearing collars yet.

•Place the bearing adjusters and the sprocket assembly onto the frame and start the pillow block bearing housing nuts onto the frame.

•Slide the sprocket assembly toward the front of the machine while tightening the pillow block bearing housing nuts.

•Align the sprocket assembly. The outside face of the left sprocket should be 1-11/16" (4.3 cm) from the outside edge of the left frame rail. Move the sprocket axle within the pillow block bearing collar as needed to get the correct distance.

•When the distance is correct, tighten the pillow block bearing collar set screw on the left and right sides of the machine.

•Loosen the pillow block bearing housing nuts slightly. Tighten the bearing adjuster set screws until the exact number of threads are exposed (refer to your notes taken earlier). Tighten the pillow block bearing housing nuts.

•Check the alignment of the other sprocket at this time. If the distance from the outside edge of the left frame rail to the outside face of the sprocket is not 1-11/16" (4.3 cm), loosen the set screws on the left and right side pillow block bearing collars and adjust the axle. Tighten the pillow block bearing collar set screws on the machine and then go to step 11.

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