To remove the drive chain, the drive chain tensioner will be loosened which
will allow the chain to be removed.
Two distances will be measured to ensure proper tensioning. The gap between
the tensioner and tensioner guide will be 3/8” and the pinch point distance of
the chain between the tensionor and the damper chain guide should be greater
than 1” (2.5mm).
and
Step Chain
There are two step chains, one
on each side of the steps.
Tensioning is done at the
tensioning pillow blocks by
the top drive sprocket.
To check the step chain
tension, use the tension adjustment slot on the noted weldment. Tension
should be adjusted so that when looking through the adjustment slot, the end
of the step shaft is visible in the top half of the adjustment slot. Tensioning is
adjusted on both step chains.