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Model G0755 (Mfg. Since 1/13)
Tightening Return
Spring Tension
The return spring moves the spindle back up
when the coarse downfeed handles are released.
The tension of this spring was adjusted at the fac-
tory, but it may need to be tightened during the life
of the mill/drill.
Important: Do not perform this procedure unless
it is absolutely necessary.
During this procedure, you will loosen the spring
cover thumb screw (See Figure 59) just enough
to pull the cover back to clear the roll pin, then
rotate the cover counterclockwise to fit the roll pin
in the next slot.
If the return spring should
come loose from the spring
cap and rapidly unwind,
laceration or impact inju-
ries could occur. Always
wear heavy leather gloves
and safety glasses when
adjusting the return spring
tension.
To adjust the return spring tension:
1. DISCONNECT MACHINE FROM POWER!
2. Wipe off any oil on spring cover so it does not
slip when you hold it during adjustments.
3. Mark slot on cover that engages the roll pin at
the top—this is the factory setting.
4. Put on heavy leather gloves to protect your
hands from lacerations if spring uncoils dur-
ing next step.
Note: Keep a good grip on spring cover dur-
ing next step. Letting go of cover when roll
pin is not engaged will cause spring to rapidly
uncoil.
5. While holding spring cover against side of
headstock so the spring will not unwind,
loosen thumb screw approximately
1
⁄4".
6. Pull cover out to disengage it with roll pin,
then rotate it counterclockwise to engage roll
pin in the next slot in cover.
7. Re-tighten thumb screw to secure setting.
Figure 59. Return spring components.
Cover
Roll Pin
Thumb
Screw
Cover
Slots