Slide Adjustments; Saddle Adjustment; Shear Pin Replacement; Headstock Alignment - Promac GHB-1330 Manuel Utilisateur

Fig 25
Fig 26

8.4 Slide adjustments

Each slide is fitted with tapered gib.
Loosen the rear gib screw (C, Fig 27) by one turn.
Tighten front gib screw appr. a quarter turn.
Try and repeat until slide moves freely without play.
Gently tighten the rear gib screw.

8.5 Saddle adjustment

Loosen 4 hex nuts (A, Fig 27).
Turn the 4 set screws (B) equally until a slight resistance is
felt.
Hold the set screws firmly and tighten the nuts to lock in place.

8.6 Shear pin replacement

Lead screw and feed shaft are equipped with shearing pins to
protect the drive against overload.
If a shear pin breaks it must be replaced.
Knock out the broken pin.
Line up the holes and fit a new pin.

8.7 Headstock alignment

The headstock has been aligned at the factory.
Check that the machine bed is level and correct before
proceeding.
Turn a test piece for inspection.
The diameter should be the same on the whole turning length.
If headstock alignment is needed:
Loosen the 4 headstock bolts that hold the headstock to the
bed.
Do not loosen completely; some drag should remain.
Adjust on the lateral adjustment bolts located on the rear of
the headstock.
Tighten all headstock bolts.
Fig 27