Jet ETM-949, Operating Instructions Manual

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19 ETM–949 | ETM–949EVS
c. Set up a dial indicator in a collet and secure using
the draw bar (refer to Figure 20).
d. Put the spindle drive in neutral.
e. Set the dial indicator plunger on the worktable.
Zero the indicator.
f. Rotate the spindle 180 degrees (when rotating, raise
the dial indicator plunger by hand to prevent it from
dropping into the table T-slots).
g. Read the dial indicator. The indicator should read
zero. If not, loosen the four hex nuts and reposition the
mill head.
h. Recheck perpendicularity using the dial indicator.
Repeat the procedure above until the dial indicator
reads zero in both positions.
i. When the indicator reads zero, tighten the ram
adapter clamp bolts.
10.3 POSITIONING THE RAM
Positioning the Ram Fore and Aft:
1. Loosen the two bolts (A, Figure 21) that lock the ram
to its ways.
2. Turn the lever (B, Figure 21) to move the ram on its
ways.
3. When the desired position is reached, lock the bolts
(A, Figure 21) securely.
Positioning the Ram on its Turret:
1. Loosen four turret lock bolts (C, Figure 21) that clamp
the ram to the top of the base. 1/2 turn should be
sufficient to allow the turret to move.
Note: Use gentle hand pressure to avoid rapid move-
ment.
2. Turn the ram until the spindle is in the desired posi-
tion. Use the scale on the turret for degree measure-
ment.
3. Tighten the four turret lock bolts (C. Figure 21).
!
Make sure the machine base is secured to the floor
before repositioning the ram. The center of gravity
can shift enough to cause the machine to tip over,
resulting in serious injury to the operator and dam-
age to the machine.
Fig. 20
B
A
D
C
Fig. 21
C
C
A
A