Climax LM5200 Operating Manual page 53

Figure 20
5. Use a precision leveling tool on the top datum surface of the ram to adjust the gantry
side of the bed until it is coplanar with the drive side. The beds must be within 0.004 inch
for every 12 inches the rails are separated. The following diagrams show the correct
alignment, maximum angular misalignment, and maximum offset allowed.
P/N 66188, Rev. 5 Page 51