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29 Vortek NXT Hoist User Operations Manual
11: Once the hoist is in a vertical orientation and
supported only by the tail end lifting device,
remove the two center slings and open the tail and
motor end beam clamps so they are able to accept
the mounting beam flanges.
12: Using the tail end lifting device, raise or lower the
hoist so that the motor end beam clamps are
aligned with the lower mounting beam. Adjust the
tail end beam clamps to align with the upper
mounting beam.
13: Push the hoist horizontally so that the hoist
backbone rests against the mounting beam
flanges.
14: Starting with the motor end beam clamps, begin
an alternating sequence of tightening each side.
You want to do this incrementally until both beam
clamps are as close to contacting the beam flange
as possible.
15: Install the lower backbone stiffener, threaded rod,
locking nuts and backbone clamp as described in
7.4 Attaching Backbone Stiffeners
on
page 14
.
16: Continue tightening the motor end beam clamps
until the backbone is tightly secured against the
beam flange. Torque to 23-27 Nm (17-20 ft/lbs).
17: Begin the same alternating sequence of tightening
the tail end beam clamps until both sides are as
close to contacting the mounting beam flange as
possible.
18: Install the other backbone stiffener, threaded rod,
locking nuts and backbone clamp as described in
7.4 Attaching Backbone Stiffeners on page 14 .
19: Continue tightening the tail end beam clamps until
the backbone is tightly secured against the beam
flange. Torque to 23-27 Nm (17-20 ft/lbs).
20: Tighten the backbone stiffener clamp set screws
to13.5 Nm (10 ft/lb).
21: Using a 1/4" allen key, tighten all four 5/16 x 18
socket head screws on the two Tail End sliding
beam clamps to 13.5 Nm (10 ft/lb).
22: Remove the tail end lifting device and the lifting
ring. For information on installing loft blocks, refer
to
7.5.4 Installation of Loft Blocks on page 22 .
Figure 29
Figure 30