MSI LT VALVE TECHNICAL MANUAL
Revision D
April 03, 2014
57
6.0 DISASSEMBLY PROCEDURE
Note: If
handle adapter (4)
or
adjusting nut (14)
appears to be stuck or locked,
pressure may be trapped in the valve. This is also known as “pressure locking.” Do
not attempt to disassemble a “pressure locked” valve.
See section
for pressure relieving procedures.
o
Remove the
handle adapter (4)
and
stop collar (5)
. Turn valve over so
that the
adjusting nut (14)
is facing up. Leaving the bottom
plug bolt (1)
in place, screw out (turning counter-clockwise) the
adjusting nut (14)
. This
will allow the entire internal assembly (
adjusting nut (14)
,
plug (10)
and
inserts (12)
) to be removed from the valve pocket at once.
o
Remove the
plug bolt (1)
that attaches the
plug (10)
to the
adjusting nut
(14)
.
o
Remove the
plug (10)
and
inserts (12)
.
o
Remove the
insert o-rings (11)
,
adjusting nut o-ring (13)
and
plug
seals (9)
.
o
Clean all of the old lubricant and debris from the parts and valve body internal
profile.
