999-998-086.10_REV. C
10
535 Manual Chuck/535 Auto Chuck Threading Machines
Inserting/Changing the Dies
1. Place the die head with numbers facing up.
2. Make sure the trigger assembly is released and die
head OPEN by pulling the trigger slide away from the
die head. Stay clear of the spring loaded Throwout
Lever while releasing trigger assembly.
Figure 9 – Open/Closed Position
3. Loosen clamp lever ap proximately six full turns.
4. Pull lock screw out of size
bar slot so roll pin will by -
pass slot. Position size
bar so that the index line
on lock screw is a ligned
with the RE MOVE DIES
mark.
5. Remove dies from the die
head.
Insert appropriate dies into
the die head, numbered
edge up until the indicator line is flush with the edge of
the die head
(see Fi gure 10)
. Num bers on the dies
must cor res pond with those on the die head slots.
Always change dies as sets – do not mix dies from dif-
ferent sets.
6. Move size bar so in dex line on lock screw is a ligned
with desired size mark. Adjust die insertion as needed
to allow movement.
7. Make sure roll pin points to ward REMOVE DIES
mark.
8. Tighten the clamp lever.
Adjusting Thread Size
1. Install the die head and move the die head into thread-
ing position.
2. Loosen clamp lever.
3. Position size bar so index line on lock screw is aligned
with desired size mark on size bar.
Adjusting Thread Size
1. Install the die head move the die head into threading
position.
2. Loosen clamp lever.
3. Start with link index mark a ligned with desired size
mark on size bar. On Bolt die heads, set link mark at
line in size bar. For bolt threads with Universal die
head, set all bolt dies at BOLT
line on size bar
(Figure 7)
.
4. If thread size needs to be ad -
justed, set the link index mark
slightly off the mark on size
bar in the direction of OVER
(larger diameter thread, less
turns of fitting engagement) or
UNDER (smaller thread diam-
eter, more turns of fitting en -
gage ment) markings.
5. Tighten clamp lever.
Opening the Die Head at the End of the Thread
At the end of the thread:
• Pipe Threads – End of threaded pipe is flush with the
end of the number 1 die.
• Bolt Threads – Thread the desired length – watch
closely for any interference between the parts.
Move the throwout lever to the OPEN position, retracting
dies.
Self-opening die Heads
The Model 815A Die Heads are self-opening die heads.
For ½" through 2" pipe sizes, a trigger can be used to open
the diehead when the thread is complete. For
1
/
8
" to
3
/
8
"
sizes, and if desired for the other sizes, the die head is
manually opened when the thread is complete.
Figure 8 – Universal Self-Opening Die Head
Figure 7 – Adjusting
Thread Size
Link
Index
Mark
Size
Bar
“Under”
“Over”
Throwout
Lever
Trigger
Assembly
Clamp Lever
Size Bar
Roll Pin
Index
Line
Lock
Screw
“Remove Dies” Mark
Trigger
Slide
Throwout
Lever
Open
Closed
Throwout
Lever
Figure 10 – Inserting Dies
Indicator Line
Indicator
Line
Indicator
Line
