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Model G0768/G0769 (Mfd. Since 6/14)
-53-
Configuring End Gears
Follow the example below to understand how
to change the gears from the factory set power
feed configuration to the primary inch threading
configuration. Concepts are similar to those for
setting up gears for power feeding.
Note: Many of the techniques and concepts
explained here also apply to setting up gears for
power feeding.
Tools Needed Qty
Hex Wrench 5mm .........................................1 Ea
Open-End Wrenches 6, 14, 17mm ...............1 Ea
Punch ................................................................ 1
Hammer ............................................................. 1
5. Loosen adjuster cap screw shown in Figure
75, and pivot adjuster down to disengage
gears.
6. Remove hex nuts, e-clips, and flat washer
that secure gears (see Figure 75).
7. Loosen top and bottom gear shafts to make it
easier to remove gears in following steps.
8. Slide 80T and 84T gears off shafts, then
remove middle C/D (20T/80T) gear and shaft
(see Figure 76).
Figure 75. Adjuster cap screw location.
To configure end gears for 20 TPI:
1. DISCONNECT MACHINE FROM POWER!
2. Locate 20 TPI on thread chart shown in
Figure 74.
3. Gather 53T, 80T, 60T, and 50T gears. (The
80T gear may already be installed.)
4. Remove end gear cover.
Figure 74. Gear positions for 20 TPI on thread
chart.
0.0071"
0.0037"
84
20
A
A
40
in/
mm
n/1"
C
C
D
D
B
B
E
E
F
A
C D
B
E F
A
C D
B
E F
F
80 80
0.40
1.25 1.50 1.75 2.00 2.50 3.00
55
80
80
53
71 7163
57
71 7163 33 3060 40 40
506084805060
20
80 80
80 63 63
80
60 70
70
70
57 72 80
80
30 33 53 30 60 40 40 4030 3370
0.50 0.60 0.70 0.80 1.00
80
30 72
33 80
30
0.0068"
A
C D
B
E F
A
C D
B
E F
30
19 20 22 24 32 40 44
80 80
30 33 40 65 70 80 60
6060 60 63
63
53
9 10 11 12 13 14 16
18
50 50 55
80
80 80 80 80
80 60
60
71 53 55 33 3055 554030
53 53 53 72 63 70
57 57 72 72
7272 80 70 40 40 40
63 5755
20 TPI
Figure 76. Gear removal identification.
84T Gear20T/80T Gear
80T Gear
Tip: Hold middle shaft T-nut in adjuster while
removing 20T/80T gear so T-nut does not fall off.
Gear
Shafts
Hex Nut &
E-Clips
Hex Nut &
Flat Washer
Adjuster
Adjuster Cap
Screw
Gears and Positions Needed