TM 55-1520-240-23-6
7-5
REPAIR PERMASWAGE PLUMBING
(Continued)
7-5
CUT TUBE
4.
Select appropriate chipless cutter (1) for size
of tube (2). Check that ratchet handle (3) is
operating freely and cutter wheel (4) is clear of
cutter head opening. Make sure cutter is clean
and properly lubricated. See step 3 for correct
tube and fitting clearance.
5.
Rotate the cutter head (5) to accept tube (2).
Locate cutter (1) in cutting position on tube. Tube
shall be centered on two rollers (6) and cutter
wheel (4).
Overtorquing soft tubing will cause a
large burr. Overtorquing hard tubing
can damage the cutter wheel.
6.
Tighten drive screw (7) until light contact is made
on tube (2) by cutter wheel (4). Tighten screw an
additional 1/8 to 1/4 turn. Do not overtorque.
7.
Rotate ratchet handle (3) thru arc of clearance
until there is noticeable ease of rotation.
8.
Tighten screw (7) an additional 1/8 to 1/4 turn.
Repeat step 7 until cut is complete.
9.
Check remaining section of tube (2). Cut shall be
square to tube centerline within 1/2º.
7-31
