External Mount Detailed Instructions; Select A Suitable Mounting Location - Will Burt 7-30 HDL Operating Instructions Manual

5.6.2

External Mount Detailed Instructions

The following are detailed steps of the installation of an externally mounted mast. The exact
installation procedures may vary based on the configuration of the mast system being used and
the installation environment.
5.6.2.1

Select a Suitable Mounting Location

When selecting a suitable mounting location, consider the following:
• The mounting area must have sufficient room to mount the mast system. It is recommended
that the external support bracket be positioned at least 1 inch (25 mm) below the RLS Guard,
but no lower than 12 inches (304 mm) below the RLS Guard. This measurement goes from
the bottom of the RLS Guard to the top of the external support bracket. Lowering the external
support bracket any further may impact the wind performance. Consult the factory. Do not
cover the drain hole. The exact dimensions of the mast system will vary based on the
components included. Refer to Section 5.6 for dimension information.
• The mounting structure must be level, solid, and capable of holding the forces required by the
bolts. Check the strength and rigidity of the mounting structure (e.g. vehicle body) where the
mast system is to be attached. Reinforce as necessary.
• Note: High forces to the mounting structure may result, depending on the payload, wind
load, and if the mast is guyed or not. The mounting surface to which the base plate is
secured will also see high downward forces and moments. For example, a typical
unguyed mast can cause a 500 ft.-lb. (677.9 N m) torque, whereas a typical guyed mast
can produce 3,500 lb. (1587.6 kg) of downward force onto the base plate. The Will-Burt
Company's engineering should be consulted for specific payload and mounting
requirements for your mast application.
• The area underneath the mast must be free of obstructions to allow for accessibility to base
plate fasteners and if present and used, the bottom air inlet port.
• The mounting location must have sufficient access for the pneumatic system.
• For mounting applications using a rotatable base plate, ensure the location of the mast allows
enough clearance to accommodate the turning handles and the air hose if the air is routed to
a side air inlet port. Rotatable Super Heavy Duty masts do not use turning handles but will
need clearance for a customer-supplied rod to be inserted into the tube head to turn the
mast.
• As mast tubes extend, they force water out of the weep holes. Keep any personnel or
sensitive equipment away from the weep hole direction.
• If the mast system is mounted in a well, provide adequate drainage. A minimum of four 1 inch
(25.4 mm) drain holes (one per corner) are recommended.
TP-5580101-A
FEBRUARY 2022
PNEUMATIC MAST WITH REMOTE LOCKING SYSTEM
OPERATING INSTRUCTIONS
PAGE 83 OF 164