Stairmaster StepMill SM5, Техническое руководство

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Mechanical Adjustments
Step Chain replacement
1. Remove side covers.
2. Remove drive chain master link and chain from transmission / upper sprocket.
3. Loosen 9/16” nuts on all 4 pillow blocks from chassis.
4. Count threads on pillow block adjustment screws, and loosen on all pillow block bearings/step chains.
5. On one side of the machine, remove step chain master link and break chain.
6. Connect new chain to old chain with master link.
7. Remove step shaft bolt and hardware on one side of the machine.
8. Remove step shafts from the old chain and reconnect to the new chain, reassembling the spacers, bearings,
washer and nut one shaft at a time per side.
9. Once the 8 step shafts have been installed into the new chain, reconnect the new step chain with the master link.
10. Once one new side’s step chain is on, repeat steps for other side.
11. Replace drive chain and master link
12. Use pillow block adjustment screws to ensure upper and lower sprockets are in alignment and tension on the new
step chains is appropriate. Tighten 9/16” bolts to chassis.
13. Tighten 9/16” bolts on the pillow blocks to chassis.
14. Replace side covers.
Upper/Lower Sprocket Replacement
1. Prepare a clean work area
2. Remove side covers
3. Remove console
4. Tip machine forward, so the console mast is resting on the ground.
5. Remove drive chain master link and chain from transmission / upper sprocket.
6. With an assistant, loosen and remove 9/16” nuts on upper sprocket pillow blocks until the pillow block bearing is
removed from the chassis and the upper sprocket is no longer connected.
7. Remove upper sprocket from machine.
8. Remove pillow block bearings from the upper sprocket and fit to the new sprocket using the set screws on the
outer collar. If pillow block bearings are bad, replace.
9. Lower the new upper sprocket into the teeth of the left and right side step chains. Ensure the inner sprocket is on
the proper side and corresponds with the transmission sprocket. Verify alignment and placement within the teeth
of the chains.
10. Replace pillow block bearings to chassis of machine and snug up the 9/16” bolts, but do not fully tighten.
11. Rotate steps to ensure there is no binding and stairs rotate smoothly.
12. Use pillow block adjustment screws to ensure upper and lower sprockets are in alignment and tension on the new
step chains is appropriate.
13. Tighten 9/16” bolts on the pillow blocks to chassis.
14. Replace side covers.
15. For lower sprocket replacement, omit step 4.
Last revised 10/5/15