Operator`s manual

The distance that the Locking Pawls on Section 1 may swing up is controlled by the lug on the Section 1
Pawls and is factory set. Take note of the distance between the rung of Section 2 and the lower face of
the Locking Pawls on Section 1 (see Figure 8-4, number 3).
Adjust the adjusting screw on the Locking Pawl Adjusting Block on Section 2 (see Figure 4-16, number
14) until the Locking Pawl Assembly on Section 2 is the same distance from a rung on Section 3 as the
Section 1 Pawl is from the Section 2 rung as previously noted.
The distance between the rung of Section 3 and the abutment on the face of the Pawls on Section 2 (see
Figure 8-4, number 4) should be the same as previously set for Section 2. If the distance is too great,
tighten the Section 3 Retraction Cable. If it is too small tighten both Section 3 Extension Cables until the
distances are equal.
Pull the Locking Pawl Control Lever to the rear to withdraw the Locking Pawl Assemblies to the
disengaged position. If the Pawls do not retract completely into their own Sections, tighten the adjustment
at the Control Lever for Locking Pawl Assembly 1 and at the attaching bracket on Ladder Section 2 for
Locking Assembly 2.
8.9 CALIBRATING THE LADDER SECTIONS
8.9.1 General
Ladder Sections 2 and 3 ride on nylon slides during Extension and Retraction, which are designed to
separate the Section’s overlapping flanges by 1/16" (see Figures 8-5, 8-6 and 8-7). If the Ladder Sections
are allowed to rub, Extension and Retraction will be impeded and greater hydraulic pressure will be
required to operate the ladder. Also, an unacceptable increase in ladder wear will result.
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