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Page Title:
BRAKES AND AIR SYSTEM-continued |
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  TM 5-2420-224-34
Table 2-1. Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
BRAKES AND AIR SYSTEM (CONT)
a. Relieve air pressure (TM 5-2420-224-20) completely from air tanks (1 and 2).
b. Attach 0-200 psi (0-14 bar) pressure gage to test connection (3).
NOTE
When fluid regulating valve reaches cut-out pressure, there will be an audible "pop". Inspect
all air supply lines.
c.
Start and run engine at idle until fluid regulating valve reaches cut-out pressure.
d. Compare pressure readings between 0-200 psi (0-14 bar) pressure gage and dual
brake gage. Both readings must be the same.
·
If pressure on both gages is zero, go to step e.
·
If pressure on both gages is the same, but less than 106 psi (7.3
bar), go to step 2.
·
If pressure on dual brake gage is different than pressure on 0-200
psi (0-14 bar) pressure gage, replace dual brake gage (TM 5-2420-
224-20).
e. Remove 0-200 psi (0-14 bar) pressure gage from test connection (3).
f.
Relieve air pressure (TM 5-2420-224-20) completely from air tanks (1 and 2).
g. Attach 0-200 psi (0-14 bar) pressure gage to test connection (4).
h. Repeat steps c and d.
·
If pressure on both gages is zero, replace fluid regulating valve
(TM 5-2420-224-20).
·
If pressure on both gages is the same, replace large air pressure
tank overflow valve (5) (TM 5-2420-224-20).
Change 1
2-11
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