6
TX Second Stage Regulator Maintenance Manual
7
TX Second Stage Regulator Maintenance Manual
4. Lift out the Diaphragm
Cover (5) and Diaphragm
(7).
5. Using an 11/16”
spanner, remove the
Heat Exchanger (6).
6. Turn the Counterbalance Adjuster Knob (28) anti-clockwise
until it stops. For the TX40 and T20 models use an Allen
key to turn the Adjusting Screw (28). Press the Lever (19)
against the Valve Spindle (20). While keeping the Lever
depressed, grasp the Knob and pull the Valve Spindle
assembly out of the Case (9). Remove the Valve Spindle ‘O’
ring (8) that will probably be left behind in the left side of
the Case.
7. Grasp the Venturi Lever (14) and pull it out of the
Case. Remove the ‘O’ ring (13) from the Venturi Lever.
8. Turn the
Counterbalance
Adjuster Knob (28) or
Adjusting Screw (28)
clockwise (inward) one
turn. The Spring Pin
(21) should drop out. If
the Pin remains in the
Valve Spindle, use a
1/16” dowel or punch
to push it partially out,
then use needlenose
pliers to completely
remove it from the
valve spindle.
9. Unscrew the Counterbalance Adjuster Knob (28) or
Adjusting Screw (28) and completely remove it from the
Valve Spindle.
10. Remove the ‘O’ ring (27) from the Counterbalance Adjuster
Knob. Remove the ‘O’ ring (8) from the Valve Spindle
Removal of valve assembly
NOTE: The Venturi Lever may have come out with
the valve Spindle in step 6. If this is the case, depress
the Lever and slide the Venturi Lever off from right to
left.
11. Insert a small 1/8” wooden dowel into the threaded end of
the Valve Spindle and push out the Shuttle Valve assembly
(22-26). Separate the Shuttle Valve assembly by pulling on
each end.
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