Intermediate Poly-V Pulley Assembly - Stairmaster MOMENTUM C40 Owner's Manual

PARTS REMOVAL AND REPLACEMENT
4. Tighten the alternator mounting screw and alternator adjustment nut.
Verify .25" (0.6 cm) of play in the belt and .10" gap between speed
sensor and the speed sensor disk.
Speed sensor
21445
.10 Max
Speed sensor disk
22517

INTERMEDIATE POLY-V PULLEY ASSEMBLY

1. Remove the side covers.
2. Remove the poly-v belt and then the HTD belt.
3. Remove the snap ring from the small HTD assembly shaft. Remove the
poly-v pulley and two thrust washers from the small HTD assembly
shaft.
4. Inspect the poly-v pulley bearings for smoothness of operation. Replace
the poly-v pulley necessary.
5. From the right side, rotate and pull the small HTD assembly shaft out
from the main frame. Remove the two thrust washers from the Inspect
the of the small HTD assembly shaft for signs of wear or scoring.
Replace the small HTD assembly shaft if it is excessively worn.
6. Inspect the bearings in the main frame for signs of wear and damage.
Replace a damaged bearing.
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Alternator belt adjustment nut
Main frame