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Model G0773 (Mfd. Since 12/14)
-73-
The rigidity of the half nut engagement is adjusted
by tightening or loosening the half nut gib screws.
Adjust the half nut if it feels too loose or too tight
when being engaged. Movement that is too stiff
will accelerate wear. Movement that is too slop-
py will produce inaccurate turning or threading
results.
Tools Needed Qty
Open-End Wrench 7mm .................................... 1
Hex Wrench 3mm .............................................. 1
To adjust half nut:
1. DISCONNECT MACHINE FROM POWER!
2. Disengage half nut.
Adjusting Half Nut
4. Engage/disengage half nut several times and
notice how it feels. The adjustment is cor-
rect when half nut firmly and easily engages
leadscrew while opening and closing.
5. Repeat Steps 3–4, if necessary, until satis-
fied with feel of half nut engagement.
6. Re-tighten gib nuts to secure position of
adjustment screws.
Figure 124. Half nut gib adjustment set screws.
Gib Nuts &
Screws
3. Loosen gib nuts and adjust screws in small,
even increments so one end of the gib
does not become tighter than the other (see
Figure 124).