Southbend South Bend SB1027 - Manual (Page 54)

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For Machines Mfg. Since 8/09 Model SB1027 S E R V I C E
3. Use the T-handle hex wrench or similar
tool to rotate the adjustment plate on the
leadscrew nut in small increments, then
rotate the X-axis ball handle to check the
amount of backlash.
4. When you are satisfied with the adjustment,
re-tighten the two cap screws.
Cross Leadscrew Backlash
Tools Needed Qty
T-Handle Hex Wrench 5mm .................................1
Hex Wrench 8mm .................................................1
Wrench 19mm .......................................................1
1. DISCONNECT MILL FROM POWER!
2. Remove the hex nut and ball handle from the
cross leadscrew.
Note: In the next step, take care not to misplace
the leadscrew key as you remove the parts.
Longitudinal Leadscrew Backlash
1. DISCONNECT MILL FROM POWER!
2. Loosen the two cap screws on the leadscrew
nut accessed from underneath the left side of
the table, as shown in Figure 61.
Figure 61. Longitudinal leadscrew nut and cap screw,
as viewed from underneath the left side of the table.
Leadscrew Nut (1 of 2)
& Cap Screw Figure 62. Ball handle, rings, and key removed from
the cross leadscrew.
Cross Leadscrew
4. Remove the four cap screws from the bearing
housing, then slide it off the leadscrew (see
Figure 63).
Note: It may be necessary to use a dead blow
hammer or rubber mallet on the housing to
knock it loose.
Figure 63. Removing the bearing housing from the
cross leadscrew.
Bearing
Housing
3. Unthread and remove the knurled retaining
ring, graduated dial ring, and the leadscrew
key, as shown in Figure 62.