Grizzly VS MILLING MACHINE G0669X - Manual (Page 49)

g0669X precision 10" x 54" Vs Milling Machine
-47-
Adjusting backlash
Leadscrew backlash is the amount of motion the
leadscrew rotates before the device begins to
move. Leadscrews always have a certain amount
of backlash that will increase with wear. generally,
0.005"–0.010" of backlash is acceptable.
tools Needed Qty
t-handle hex Wrench 5mm .............................. 1
hex Wrench 8mm .............................................. 1
Wrench or socket 19mm ................................... 1
to adjust leadscrew backlash:
1. disConneCt the MiLL FroM poWer!
2. remove the front way cover.
3. Move the table and saddle all the way for-
ward, then remove the ball handle.
4. remove the four cap screws shown in figure
65 that hold the bearing housing to the sad-
dle.
5. slide the graduated dial assembly off the
leadscrew, then remove the key from the end
of the leadscrew.
6. Carefully loosen the bearing housing from
the alignment pins, then remove it from the
leadscrew (see
figure 66).
Note: If you need to pry the bearing hous-
ing loose, do so carefully and evenly from
all sides to avoid damaging the bearing and
leadscrew.
figure 66. Cross feed bearing housing and
alignment pins.
alignment pins
Bearing
housing
Way Cover
Mounting
Flange
figure 65. Cross feed graduated dial assembly
and bearing housing with ball handle removed.
Cap
screws
Cap
screws
graduated dial assembly
Bearing housing