Stairmaster 8G Gauntlet Service Manual page 38

10. Use a small crescent wrench to hold the stepshaft
nut on one side of the stepshaft while using a
1/2" socket to remove the nut on the opposite
side. Be sure to remove the step shaft nut on the
same side as the replacement step chain. Once
the nut is removed, also remove the bearing and
washer from the stepshaft (Fig. 9). Repeat this
process a second time on the next set of step-
shaft hardware.
11. Once two sets of stepshaft hardware have been
removed, pull the old step chain off of the two
stepshafts that have just had their hardware
removed (Fig. 10).
Fig. 9
Fig. 10
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