Jet GHB-1236, Инструкция по эксплуатации и обслуживанию

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11.5 Half nut gib adjustment
1. Remove thread dial assembly by unscrewing
the screw (D, Figure 11-2).
2. Loosen three hex nuts (E, Figure 11-2) found
on side of apron, and turn three set screws (F,
Figure 11-2) equally with a hex wrench.
3. Adjust properly for wear and play. Hold socket
set screw firmly with a hex wrench and tighten
hex nut to lock in place.
Note: Over-
adjustment will cause excessive, premature
wear on gib and mating parts.
Figure 11-2
11.6 Headstock alignment
The headstock has been aligned at the factory and
should not require adjustment. However, if
adjustment is deemed necessary, follow procedure
below to align headstock.
1. Using an engineer's precision level on the
bedways, make sure lathe is level side-to-side
and front-to-back. If lathe is not level, correct
to a level condition before proceeding. Re-test
alignment if any leveling adjustments were
made.
2. From steel bar stock of approximately two
inches in diameter, cut a piece approximately
eight inches long.
3. Place two inches of bar stock into chuck and
tighten chuck. Do not use tailstock or center to
support the other end.
4. Set up and cut along five inches of bar stock.
5. Using a micrometer, measure bar stock next to
the chuck and at the end. The measurement
should be the same.
6. If the measurements are not the same and
adjustment is required, loosen the four bolts
that hold headstock to bed. Do not loosen
completely; some drag should remain.
7. Loosen two hex nuts found on the two
adjusting bolts located on backside of
headstock just above motor mount bracket.
Adjust the bolts for alignment and tighten hex
nuts. Tighten headstock bolts and make
another cut. Keep adjusting screws after each
cut until the bar stock measurements are the
same. Tighten all headstock bolts and jam
nuts on adjusting screws.
11.7 Removing gap bridge
1. Using an open end wrench, tighten the two
hex nuts (A, Figure 11-3). This will cause the
taper pins (B, Figure 11-3) to release. Remove
the taper pins.
2. Remove the four hex socket cap screws (C,
Figure 11-3) with a hex key wrench.
3. Gap bridge can now be removed.
11.8 Installing gap bridge
1. Clean bottom and ends of gap bridge
thoroughly.
2. Set gap bridge in place and align.
3. Remove nuts (A, Figure 11-3) from taper pins
(B, Figure 11-3).
4. Slide taper pins in their respective holes and
seat using a mallet. Install nuts on taper pins
finger tight.
5. Install four socket head cap screws (C, Figure
11-3) and tighten securely.
Figure 11-3