7. Turn carriage handwheel to back die head off pipe.
8. Swing die head back to UP position.
Removing Pipe From
The Threading Machine
1. Use repeated and forceful clockwise spins of the
speed chuck handwheel at the front of the Threading
Machine to release the workpiece from the speed
chuck jaws.
2. If necessary, loosen the rear centering device using
a clockwise rotation of the handwheel at the rear of
the Threading Machine.
3. Slide the workpiece out of the Threading Machine,
keeping a firm grip on the workpiece as it clears the
Threading Machine.
WARNING
To avoid injury from falling parts or equip-
ment tip-overs when handling long workpieces, make
sure that the end farthest from the Threading Machine is
supported prior to removal.
4. Clean up any oil spills or splatter on the ground
surrounding the Threading Machine.
Installing Dies In Quick-Opening Die
Head (Right and Left Hand)
The No. 811A Universal Die Head (Figure 7) for right
hand threads requires four sets of dies to thread pipe
" through 2". One set of dies is required for
ranging from
/
1
8
each of the following pipe size ranges: (
" and
") and (1" through 2"). Bolt threading requires a
(
1
/
3
/
2
4
separate set of dies for each bolt size. No bolt dies are
available for left hand universal die heads.
1. Lay die head on bench with numbers up.
2. Flip throwout lever to OPEN position.
3. Loosen clamp lever approximately three turns.
4. Lift tongue of clamp washer up and out of slot under
size bar. Slide throwout lever all the way to end of slot
in the change die direction indicated on cam plate.
5. Remove dies from die head.
6. Insert new dies to mark on side of dies. Numbers 1
through 4 on the dies must match numbers on the die
head.
7. Slide throwout lever back so that tongue of clamp
lever washer will drop in slot under size bar.
8. Adjust die head size bar until index line on link is
aligned with proper size mark on size bar. For bolt
threads, align underline with bolt line on size bar.
300 Compact Pipe and Bolt Threading Machine
"), (
" and
"),
1
/
1
/
3
/
8
4
8
Index Line
Link
Throwout
Lever
Figure 7 – Universal Quick-Opening Die Head
9. Tighten clamp lever.
10. If oversize or undersize threads are required, set the
index line in direction of OVER or UNDER size mark
on size bar.
Installing Dies In Self-Opening Die Head
(Right Hand Only)
The No. 815A Self-Opening Die Head (Figure 8) for
right hand threads requires four sets of dies to thread pipe
" through 2". One set of dies is required for
ranging from
1
/
8
each of the following pipe size ranges: (
" and
") and (1" through 2"). Bolt threading requires
(
1
/
3
/
2
4
a separate set of dies for each bolt size.
1. Place self-opening die head on bench in vertical
position.
2. Make sure trigger assembly is released.
3. Loosen clamp lever approximately six full turns.
4. Pull lock screw out of slot under size bar so that roll
pin in lock screw will bypass slot. Position size bar so
that index line on lock screw is aligned with the
end of REMOVE DIES position.
5. Lay head down with numbers up.
6. Remove dies from die head.
7. Insert new dies to mark on side of dies. Numbers 1
through 4 on the dies must match numbers on the
die head.
8. Move throwout lever back to lock in dies.
9. With head in vertical position, rotate cam plate until roll
pin on lock screw can be positioned in slot under
size bar. In this position dies will lock in die head.
Washer
Head
Clamp Lever
Size Bar
"), (
" and
"),
1
/
1
/
3
/
8
4
8
9