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End-Gear Configuration Example
Follow the example below to better understand
how to read the gear charts to configure the end
gears accordingly.
Tools Needed
Hex Wrench 5mm .............................................. 1
Open-End Wrench 17mm .................................. 1
To configure end gears for threading 18 TPI:
1.
Locate 18 on inch thread chart, then look at
numbers provided at top of column in "a" and
"b" rows (60 and 54). These are end gears
that need to be used in the "a" and "b" posi-
tions (see Figure 77).
60T & 54T
Gears
18 TPI
Figure 77. Locating end gears for 18 TPI.
2.
DISCONNECT MACHINE FROM POWER!
3.
Remove headstock end-gear cover.
4.
Loosen arm-support cap screw shown in
Figure 78.
"a" Position
Gear
(Flat Face
Out)
120/127T
Gears
Arm Support
Hex Nut
Figure 78. Arm support and end gears.
Model G0824 (Mfd. Since 12/16)
Qty
"b"
Position
Gear
(Stepped
Face
Out)
Arm
Support
Cap
Screw
Arm
Support
5.
While holding the 120T/127T gears, loosen
the arm-support hex nut and slowly let gears
pivot down and away from upper "a" position
gear, as illustrated below.
"a"
Position Gear
120T Gear
(In Front)
Arm-Support
Hex Nut
Figure 79. End gear placement.
6.
Loosen 120T/127T gear support hex nut and
slide the middle gear away from lower "b"
position gear.
7.
Remove cap screw and flat washer from the
upper "a" position and "b" position gears,
then slide gears off of shafts.
8.
Slide 60T gear onto "a" position shaft and
54T gear onto 'b" position shaft, making sure
to align keys and keyways.
Note: Position flat, non-stepped face of
60T gear away from headstock, but posi-
tion stepped face of 54T gear away from the
headstock in Step 11 (see Figure 78).
9.
Secure 60T and 54T gears with flat washers
and cap screws removed earlier.
127T Gear
(In Rear)
Gear-Support
Hex Nut
"b"
Position Gear
-53-
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