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If the mark ends up below the tube intersection location,
then the handles will need to be modified. To determine
the handle measurement, measure the distance from
bottom of the upper rail step to the tube intersection
location.
Subtract this distance from the upper rail
measurement, and then add ¾" to the difference. This is
the handle measurement.
Once the handle measurement has been determined,
remove the ladder from the roof and disassemble both
the handle portions from the upper ladder assembly by
removing the #10-24x1-1/2" bolt and #10-24 nut with
nylon-lock insert. Mark the measured distance on the
handle portion from the end that the upper ladder
assembly inserts into. Using a hacksaw or tube cutter,
remove the end of the handle portion at the mark. Slide
the handle sections over the smaller-diameter inserts of
the upper ladder section. Turn the handles until they are
perpendicular to the ladder section and drill a 13/64"
hole through each handle and inner tube insert
approximately 1-1/2" from the handle insert end (see
Diagram #6). Replace the #10-24x1-1/2" bolt through
each set of holes and fasten each with a #10-24 nut with
nylon-lock insert. Tighten the bolt to 16-18in-lbs until
snug to surface (see Diagram #7). Be careful not to
over-tighten the bolt or tube may be crushed.
Using a hacksaw or tube cutter, remove the ends of the
upper ladder section at the mark on each rail. Insert the
bolt-leaf end of a die cast hinge into one rail of the upper
ladder section.
Turn the hinge until the hinge-nut
surface is facing outside (away from the other upper
ladder section rail) and drill a 13/64" hole through the rail
and hinge end approximately 1/2" from the rail end (it
may be easier to pre-drill a starter hole through the rail
before inserting and drilling the hinge.) Place a #10-
24x1-1/2" bolt through each set of holes and fasten each
with a #10-24 nut with nylon-lock insert. Tighten the bolt
to 16-18 in-lbs until snug to surface (see Diagram #8).
Be careful not to over-tighten the bolt or tube may be
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