Procedure 7.9 - Replacing an Input Pulley Belt
Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch
points exist between the stairarm and ramp and between the stairarm and crankarm, when the
rear covers are removed.
Procedure
1. Set the on/off switch in the “off” position, then unplug the power cord from the A.C. outlet.
WARNING
Before continuing with this procedure, review the Warning and Caution statements listed in
Section One, Things You Should Know.
2. Remove the top, left and right cover sections as described in Procedure 7.1.
3. Remove the stairarm assemblies as described in Procedure 7.17.
4. Remove the crankarm assemblies as described in Procedure 7.6.
5. Mark the current position of the step up belt tension bolts and the position of the idler pulley
mounting bolt in its adjustment slot with a pen or white out. This will enable you to recreate
the existing tension settings later in this procedure. See Diagram 5.3.
6. Remove tension from the drive belts and remove the pillow block bearings per Procedure
7.7.
7. Slide the step up and input belts off of the input drive assembly and remove the input drive
assembly from the unit. (See Diagrams 7.7)
8. Remove the left and right tension bolts, locking tabs and brackets. Slide the step up pulley
assembly with both the step up and input belts out of the drive unit.
Diagram 7.7 - Step Up Pulley
Step Up
Pulley
Tension
Bolt
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