Use and Care Manual

13
12.0 Operation
12.1 Break-In Procedure
During manufacturing and testing, this lathe has
been operated in the low R.P.M. range for three
hours.
To allow time for the gears and bearings to break-
in and run smoothly, do not run the lathe above
755 R.P.M. for the first six hours of operation and
use.
12.2 Feed and Thread Selection
1. Reference the feed and thread table (A, Fig.
16).
2. Move knobs and handle (B, Fig. 16) to the
appropriate position.
Figure 16
12.3 Change Gear Replacement
Note: the 32T x 127T x 48T gears are installed in
the end gear compartment when delivered from the
factory. This combination will cover most inch
feeds and threads under normal circumstances.
The additional gears found in the toolbox are used
for some metric threads and feeds.
1. Disconnect the machine from the power
source.
2. Open the end cover on the left end of the
headstock.
3. Loosen the socket head cap screw (D, Fig. 17)
and hex nuts (E & F, Fig. 17). Move the
quadrant out of the way.
4. Change gears (G, Fig. 17) to match the feed
and thread chart.
5. Thoroughly clean and install new gears.
6. Move the quadrant so the large gear meshes
with the smaller gears and tighten to secure in
place. Note:Make surethere is backlash of
0.002” – 0.003” between gears. Setting the
gears too tight will cause excessive noise and
wear.
7. Close the cover and connect the machine to
the power source.
Figure 17
12.4 Automatic Feed Operation and
Feed Changes
1. Move the forward/reverse selector (A, Fig. 18)
up or down depending on desired direction.
Figure 18
2. Set the selector handle (B, Fig. 19) to the “3”
position and turn knob (C, Fig. 19) counter-
clockwise so the arrow is pointing up to start
the feed rod rotating.