CAME BX704AGS Manuel D'installation page 46

Place the operator on top of the anchoring plate.
The electrical cables must pass under the operator foundation frame
Lift the operator by 5-10 mm from the plate by adjusting the threaded feet, to allow for any adjustments that may need to be made between the rack and pinion.
Fastening the rack
1
Release the operator.
2
Rest the rack on the pinion.
3
Weld or fasten the rack to the gate along its entire length.
To assemble the rack modules, use an extra piece and rest it under the joint, then fasten it in place using two clamps.