National Crane 3-29-2018 Control # 610-00 6-17
NBT40-1 SERIES OPERATOR MANUAL SET-UP
Platform Mounting and Installation
The following operating instructions explain how to raise the
platform assembly to the level necessary to attach the
platform adapter to the boom nose.
1. If the platform yoke is raised higher than required during
installation, it can be lowered by SLOWLY pulling up on
the float selector (1, Figure 6-15). Use caution when
lowering the yoke in this manner. Pulling the float
selector (1) out to fast and to far will lower the yoke at a
very fast rate.
2. If the platform yoke needs to be raised; return the float
selector to the down position and use the hand pump to
raise the yoke to the desired position.
3. Insert pins through hole in attaching hardware and tip of
boom or jib as shown in Figure 6-13.
Platform Operation
Perform the Installation instructions beginning on page 12
before starting these operating instructions.
1. To enter the platform, remove the gate locking pin (1,
Figure 6-14), pull up on the grab handle (2) and swing
the gate (3) open.
2. Connect the safety harness to the anchor point. Close
the platform gate (3, Figure 6-14) by lifting up on the
gate grab handle (2) and move the gate to the closed
position, reinstall the safety pin (1).
Platform Brake Operation
The platform cylinder and brake manifold internal to the
platform is used to raise and lower the yoke for installation
and stowage as well as locking the platform position when in
use after mounting of the platform to the boom or jib tip.
1. Verify the float selector (1, Figure 6-15) is positioned to
the raised/up position and the brake selector (2) is in the
CW (clockwise) position. This allows the platform to
swing freely as the platform is raised to the work
location.
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