Operator`s manual

8.9.2 Ladder Spacing Adjustment
With the ladder retracted, check the spacing separating each Section. If the spacing between the sections
is greater than 1/16" but less than 1/4", install shims at the nylon slides to reduce the spacing between the
sections to 1/16". If the spacing between the sections is 1/4" or greater, remove the nylon slides and
install new slides.
8.10 CALIBRATING LADDER DIALS AND LIMIT SWITCHES
8.10.1 General
The Ladder Extension Dial and Limit Switches are controlled through the operation of the Extension
Indicator Assembly (see Figure 8-8). The Extension Indicator Assembly is driven through a gear train (2)
by the right drum of the ladder winch (1). As the winch rotates to extend or retract the ladder the threaded
screw on the Indicator Assembly (3) is moved left or right. A control cable attached to the Indicator
Assembly Screw rotates the Indicator Dial on the Ladder Control Console (see Figure 8-9). At the same
time adjustable cams attached to the screw activate Extension and Retraction Limit Switches.
The Inclometer Dial is connected by a control cable and a series of pulleys to Ladder Section 1. As
Section 1 rotates about its axis the Inclometer Dial is rotated to indicate the angle of elevation.
Deceleration and stoppage of ladder elevation are controlled by the Elevating Cylinder Limit Switch
Assembly. For an explanation of the operation of this assembly, refer to paragraph 6.4.7.
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