TM55-4920-432-13&P
4-22 VACUUM TWO-WAY SHUT-OFF VALVE
4-22
THIS TASK COVERS: REMOVAL AND INSTALLATION
Initial Set-Up:
Personnel Required:
68F Aircraft Electrician
or
35H TMDE Support Specialist
Tools and Equipment:
Tool kit (B2) or Shop Set (B4)
Material/Parts:
Shut off Valve, Tape (D9)
Equipment Condition:
Power disconnected, control panel open
1.
REMOVAL
a.
Remove screw (1) from end of knob (2), loosen two allen screws mounted on side of knob, then
remove knob from valve.
b.
Remove mounting screws (3) from panel (4).
c.
Disconnect hoses from all fittings on valve (5).
d.
Remove nipple (6) from valve.
e.
Remove elbow (7) from valve.
2. INSTALLATION:
a.
Apply tape (D9) on all threaded fitting ends.
b.
Install elbow (7) back to bottom port of valve.
c.
Install nipple pipe thread fitting (6) into side of port.
d.
Position valve (5) into panel (4) as per note and secure
with four screws (3).
e.
Place knob (2) on valve stem and orient to panel and stem
position. Tighten two allen screws to valve stem flats.
f.
Install screw (1) through knob to valve stem.
Performance check (para. 2-5)
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4-22
