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Model M1112 (For Machines Mfd. Since 12/20)
Gearbox Levers
NOTICE
NEVER attempt to shift a lever while the lathe is
running! And when shifting a lever, NEVER force it. If
the lever will not engage, rotate the chuck by hand
while keeping light pressure on the lever. As the
chuck rotates it aligns the gears and the lever will
engage.
The two levers (Figure 41) at the bottom of the headstock
change the feed rate or the number of threads cut per-
inch. The left-hand lever engages in alpha positions A, B,
C, D, and E; and the right-hand lever engages in numeric
positions 1, 2, 3, 4, 5, 6, 7, and 8.
Use the feed rate chart shown in Figure 42 to position
the quick change gearbox levers.
Feed Rate Chart
The far left column in the feed rate chart (Figure 42)
shows which change gears must be installed so the chart
will be applicable.
For example: Using the metric chart to make a 0.158mm
per revolution longitudinal cut, refer to the row that has
this symbol:
.
left-hand lever in the C position, and the
Then put the
right-hand lever in the 4 position.
To perform a facing cut, use the chart
but refer to the row that has this
Note: When either of the two selector levers are left in
the down position, the drive train is disengaged and is in
neutral.
the same way
symbol:
.
-31-
Figure 41. Quick change gearbox.
42
Figure
. Feed rate chart.
This symbol indicates longitudinal feed.
This symbol indicates cross feed rates.
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