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adjusting headstock limit switch
Adjusting Headstock
Limit Switch
The headstock limit switch is a safety mechanism
that ensures the boring bits will not rotate unless
the boring head is lowered to the workpiece.
This limit switch usually does not need adjust-
ment. However, if the boring heads do not rotate
when the foot switch is pressed, you may need to
adjust the height of the limit switch relative to the
headstock.
To adjust the headstock limit switch:
1.
Set the depth control to "0".
2.
Use a 5mm hex wrench to loosen the
cap screws securing the limit switch (see
Figure 36).
Figure 36. Headstock limit switch.
-28-
Switch Arm
Cap
Screws
To avoid personal injury,
always keep hands and
body away from the spin-
ning boring bits.
3.
Adjust the limit switch position so that the
switch arm lowers enough that the machine
turns ON; then move the limit switch down
until the switch arm is moved up and turns
the machine OFF.
4.
Re-tighten the limit switch cap screws.
5.
Set the depth control to
indicator window).
6.
Test the limit switch position by pressing and
releasing the foot switch, and make sure the
machine turns OFF when the boring head
raises up.
— If the machine does not turn OFF when the
boring head is in the upper position, then
repeat Steps 1–4 until it does.
Model G0643 21-Bit Line Boring Machine
⁄
" (0.50" in the dial
1
2
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