3
Continue using the longer vial, with the table at the front of the machine look at the position of the
indicating bubble
Jog the table through its full Y-axis travel stopping at the column, with the table at the column look to
see which rear corner of the machine is lowest if any.
If needed adjust the leveling screws 2 and 4 until there is no twist across Y axis
Continue adjusting the level at the front and back of the machine until both readings are zero.
Lower the center leveling screws 3 and 6 until they make contact with the pads. Tighten these hand
tight and then tighten them an additional 10 degrees with the ratchet.
4
Place the level in the center of the bed and orient it so the long vial is parallel to the Y-axis
Look at the bubble position when the bed is at its center position and then jog the bed back in the Y
direction until it reaches the column.
Take note of the bubble position, if the level shows that the machine is either bowed in the up or down
direction, make small and even adjustments to middle leveling screws 3 and 6
The Tolerance for both the twist and bow is N.T.E 0.0002"/10"
For a more in depth guide on how to level your VMC including how to level machines with outriggers please
see:
VMC LEVELING
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