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 TM-55-1905-223-24-18-1
2-27.
Replace/Repair Gauge Panel Assembly.
This task covers:
a. Removal, b. Repair, c. Replacement.
INITIAL SETUP
Equipment Condition
Tools
Shut down - TM 55-1905-223-10
Tool kit, general mechanic's,
Electrical power turned OFF at
power panel, switch tagged "Out of
Service - Do Not Operate."
Materials/Parts
Gauge panel assembly P/N 1284-2
Dial indicating vacuum gauge P/N GG28
Dial indicating pressure gauge P/N GG31
Warning tag, Item 1, Appendix C
REMOVAL
On back of gauge panel (1), tag and disconnect sensor leads (2) to four
a.
gauges on panel.
Remove three plain hexagon nuts, lockwashers and machine bolts (3) holding
b.
panel to bracket on first stage vessel.
Remove gauge panel assembly.
c.
REPAIR
Remove two securing bolts (4) from rear of each gauge.
a.
b.
Slide gauge out of panel front.
c.
Install replacement gauge into panel.
Secure gauge to panel with two bolts (4).
d.
REPLACEMENT
a.
Secure gauge panel assembly to bracket on first stage vessel with three
machine bolts, lockwashers and plain hexagon nuts (3).
On back of panel, remove tags and connect sensor leads (2) to four gauges on
b.
panel.
c.
Remove warning tag from power panel and restore power.
2-229
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