INSTALLATION
MH–Series Positioner Manual with MotoMount
4-6
MOTO
MAN
Figure 4-6 Leveling Hardware
Leveling the Type I Headstock
The headstock must be leveled two directions: parallel to the faceplate and
perpendicular to the faceplate. Since it only takes three points to define a plane, use
only three of the four leveling bolts to level the system. It is important to
consistently use the same three leveling bolts throughout each process. The fourth
leveling bolt will be used as an anchor only.
Before proceeding, make sure that the headstock is in the proper place. Make sure
a leveling bolt, lock-nut, and leveling shim is installed in each column base hole.
To level the headstock assembly axially, proceed as follows:
1. Place a level on top of the housing, perpendicular to the faceplate.
2. Use the two leveling bolts beneath the faceplate (A and B), and a third
beneath the motor (C) to level axially (see Figure 4-6). If the faceplate side
needs adjustment, A and B must be turned equally.
To level the headstock assembly cross-axially, proceed as follows:
1. Place a level on top of the housing, parallel to the faceplate.
2. Use the same three leveling bolts used above and adjust them until the level
is balanced, adjusting B + C equally.
3. Repeat the axial and cross-axial leveling steps until level readings are
achieved in both directions.
4. Drive the fourth leveling bolt down to the leveling shim.
5. Check level axially and cross-axially again. When level, tighten the anchor
system (customer-supplied) to the specified torque.
6. Tighten the four lock-nuts to the column base.
LEVELING SHIM
LEVELING BOLT
LOCK NUT
HEADSTOCK
COLUMN
FACEPLATE
COLUMN BASE
A
B
C
ANCHOR (CUSTOMER SUPPLIED)
