Portable Aluminum Gantry Crane
Operation & Maintenance Instructions
Document No. TD005-0618
Last Updated: 21 June 2018
Page 9 of 12
ADJUSTING THE HEIGHT
First secure the trolley and hoist to one of the Gantry A-Frames, preventing movement along the Beam.
We advise that you should only raise/lower one end at a time and that you do not raise/lower more than 2 height
increments in any one movement.
To raise or lower the beam, first ensure that the upright leg is held to prevent it from dropping. Release the
locking pin (as shown in Fig 16) and raise or lower the leg until the next 1 or 2 holes align. Re-insert the locking
pin and secure. Repeat until the correct height has been achieved.
