Operator`s manual

4.2.3 Ladder Retraction
The ladder retraction cable (see Figure 4-14) is wound on the underside (clockwise) of the right-hand
winch drum (1). It passes around the two pulleys on Section 1 of the ladder (2) which transfers it from the
underside of Section 1 to the topside. It then passes around the two pulleys fastened to Section 2 of the
ladder (3) which transfers it from the underside of Section 2 to the topside. The cable terminates at the
Retraction Cable Compensator (4) mounted on the underside of Section 3. The Retraction Cable
Compensator keeps tension on the retraction cable (5).
When the winch drum is rotated in a clockwise direction, the retraction cable is wound onto the right-hand
drum, which causes ladder Section 3 to retract toward the winch.
When ladder Section 3 is retracted, it causes Section 2 to retract at the same rate through the action of
the cables shown in Figure 4-15. These are the same cables used for extension. One cable is fastened
to the left rear underside of Section 3 (1). It passes around one set of canted pulleys on Section 2 (3) and
is fastened to ladder Section 1 (5). A second cable is fastened to the right rear underside of ladder
Section 3 (6). It passes around the other set of canted pulleys on Section 2 (4) and is fastened to the
opposite side of Section 1 (2).
As Section 3 is retracted by the action of the retraction cable (previously described), the two cables shown
in Figure 4-15 pull on the canted pulleys mounted on Section 2 and cause that section to retract along with
Section 3.
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