Bolt 2
Bolt 1
The gantry beam has adjustment holes to narrow the
footprint of the gantry. If this process is required to
be carried out often then an upgrade to ‘lobed cheek
plates’ can be purchased which allows the gantry to be
assembled as steps 8-21 but with one A-Frame inward
from the end of the beam.
Spare Bolt
Tighten both bolts until the spring washer is fully
depressed
Slacken chain block and remove bolt
restraining the trolley
Move trolley to other end of beam and
repeat steps 11-13 for second A-frame
assembly. Then follow step 20
Mechanical Aid
19
Lay the two A-Frames a beam length apart on a
flat surface in line with each other with the castor
wheels outward and brakes on
Lay the beam on the A-Frames, resting on bolt 1
on each cheek plate
This illustration demonstrates the bolt positions
(1 & 2) for the cheek plates.
Offer one end of the beam to the rear bolt-hole
on the cheek-plate (bolt 1) and insert a bolt
Put on plain washer, spring washer then nut,
finger tight
Offer opposite side of beam to the rear bolt-hole
on the cheek-plate (bolt 1) and insert bolt
Put on plain washer, spring washer then nut,
finger tight
Thread the beam trolley over the other end
of the beam and lock with the friction brake at
approximately center position. If using a gated
trolley, lock with the friction break
Assembly Instructions
Move the trolley to the last beam hole on the side
of the A-frame to be assembled
Insert the spare bolt into the beam, between
trolley and A-frame to be assembled, as shown
Fasten the bolt with the nut to ensure it does not
remove itself
Operate the chain block until the A-frame
assembly is perpendicular to the beam and insert
second bolt into cheek plates
Attach chain block to trolley master-link and attach
the lifting chain to the mechanical aid, as shown
The further the trolley away from the A-frame
the greater the mechanical advantage.
Ladder will be required to reach bolt holes.
Mechanical Aid Assembly
PORTA
GANTRY
11000
7
6
8
10
9
8a
13
11
14
13a
12
