Readjustments - Promac PBD-3069 Manual

Figure 11-1: Gearbox oil fill-up
Change the oil in the gearbox every 1000 operating hours.
Drain oil by removing drain plug (K).

11.2 Readjustments

A) Bearing adjustment:
The main spindle taper roller bearings are adjusted at the
factory.
If end play becomes evident after considerable use the
bearings may be adjusted.
Loosen two hex socket cap screws (A, Fig 11-2). Tighten nut (B)
until end play is taken up.
Figure 11-2: Bearing adjustment
Tighten nut carefully, the spindle should still revolve freely.
Excessive preloading will damage the bearings.
Tighten the screws.
B) Cross slide and Top slide adjustment:
Each slide is fitted with a gib (C, Fig 11-3) and can be adjusted
with screws (E) fitted with lock nuts (D).
Figure 11-3: Slide adjustment
Adjust until slides move freely without play.
C) Cross slide spindle adjustment
Remove the top slide and adjust the grub screw (F, Fig 11-4) until
the backlash between the spindle and the nut is eliminated.
Figure 11-4: Cross slide spindle adjustment
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