TM 55-2210-223-34
TO 45A2-2-14-22
3-8. DUPLEX AIR GAGE (cont)
TEST (cont)
13.
If duplex air gage (7) is not removed from locomotive, use a portable air gage tester and test by the following:
a.
Remove probe plug (11).
b.
Install tester probe (12) and female hose connector (13).
c.
Test at half scale and full scale and compare amount of pressure applied to the reading shown on gage as
indicated:
(1)
Brake cylinder - 20 and 45 psi (183 and 310 kPa)
(2)
Brake pipe and equalizer - 40 and 80 psi (276 and 552 kPa)
(3)
Main reservoir - 70 and 130 psi (483 and 896 kPa)
d.
Adjust pointer as needed. Refer to step 12b above.
e.
If duplex air gauge (7) is not accurate, further repair is required. Send duplex air gauge to a calibration
facility.
f.
Disconnect female hose connector (13), and remove tester probe (12).
g.
Install probe plug (11).
ASSEMBLY
14.
Install duplex air gage (7) into glass housing (10) and secure with two screws (9).
15.
Install front glass cover (8) on dial and secure with copper clasp.
INSTALLATION
16.
Install duplex air gage (7) on control stand.
17.
Install two lockwashers (6) and bolts (5).
18.
Install two light sockets (4).
19.
Connect four air line connections (1) to duplex air gage (7).
20.
Install cover (3) and secure with six thumbscrews (2).
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