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8
Operation
Feed and Thread Selection
1. Reference the feed and thread found on
the gear box faceplate tables (A, Fig. 17 &
page 22 of manual).
2. Move levers (B, C, D, E & F, Fig. 17) to
the appropriate positions according to the
chart.
Change Gears Replacement
The 25T, 127T, 50T 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 30T, 32T, and two 40T gears found in
the tool box are used with different
combinations as indicated on feed and thread
tables (A, Fig. 17).
1. Disconnect the machine from the power
source (unplug).
2. Open the door on the left end of the
headstock.
3. Loosen nuts (A & B, Fig. 18).
4. Move quadrant (C, Fig. 18) out of the way
and hold in place temporarily by tightening
nut (A & B, Fig. 18).
5. Remove hex socket cap screws (D and/or
E, Fig. 18), depending on which gear is to
be changed.
6. Install new gear(s) and tighten in place
with a hex socket cap screw.
7. Loosen nut (B, Fig. 18), move quadrant
back so teeth mesh on gears, and tighten
nuts (A & B, Fig. 18).
Caution: Make sure there is a backlash
of .002”-.003” between gears. Setting the
gears too tight will cause excessive noise
and wear.
8. Close the door and connect the machine
to the power source.