999-998-086.10_REV. C
16
535 Manual Chuck/535 Auto Chuck Threading Machines
Figure 25B – Rear Pivot Rod Support - Pin Placement
3. Place a 5/16" pin 2" long through the holes in carriage
rest and left hand die head to retain in place
(see
Figure 26)
.
Figure 26 – Retaining LH Die Head in Place
4. Threading will be done with the REV/OFF/FOR switch
in the REV position. For the Auto Chuck machines, the
chuck operation will be reversed – the chuck will
close down and grip pipe in REV and open in FOR.
Removing Pipe from the Machine
1. Un-chuck the pipe.
For Manual Chuck machines:
With the REV/OFF/ -
FOR Switch in OFF position and the pipe stationary,
use repeated and forceful clockwise spins of the
handwheel to loosen the pipe in the chuck. Open
the front chuck and the rear-centering device. Do not
reach into chuck or centering device.
For Auto Chuck machines:
Move the REV/ OFF/ FOR
(2/0/1) Switch to the REV (2) position. Press and
release the foot switch, the machine will release the
pipe. Move the REV/OFF/FOR Switch to the OFF
(0) position.
Figure 24 – LH or RH Oil Flow Selector
Left hand threading requires the chuck jaws to grip the
pipe during REV rotation of the machine.
a. Make sure that the REV/OFF/FOR (2/0/1) switch is
in the OFF (0) position and the cord is unplugged
from the outlet.
b. Remove rear cover. Loosen cover screws and
rotate cover to remove
(Figure 25A)
.
c. Remove E-clips and rear pivot rod support
(Figure
25B)
.
d. Position the rear pivot rod support so that pin faces
outward and reinstall
(Figure 25B)
.
e. Reinstall retaining E-clips and rear cover.
f. With the machine completely reassembled and
the chuck cover installed, place the REV/OFF/FOR
in the FOR position to open the chuck in prepara-
tion to left hand thread. In this configuration, the
machine can be used for both Left Hand and Right
Hand threading, depending on whether FOR or
REV is used to open the empty chuck.
g. To convert back to Right Hand threading only, turn
over the rear pivot rod support so that pin faces
inward and reinstall
(Figure 25B)
.
Figure 25A – Removing Rear Cover
Right Hand Thread
Pin
Outward
Pin
Inward
L.H. & R.H. Threading
R.H. Threading
Rear
Pivot Rod
Support
Place Pin
Through
Holes
Loosen
Screws
Rotate Cover
Place Pin
Through
Holes
