TM 55-1520-240-23-1
1-63
SERVICE FLIGHT CONTROL SYSTEM ACCUMULATOR (Continued)
1-63
3.
Read accumulator gauge (3). If indicated
pressure is within maximum and minimum limits
shown in chart, go to Follow-On Maintenance.
If pressure is not within limits or you need to
depressurize the accumulator, go to step 4.
WARNING
High pressure air trapped under valve
cap can be a hazard. If cap is not
removed slowly, air can pop it off and
cause injury.
4.
Loosen cap (4) on charging valve (5) one or two
turns. Allow any trapped air to escape.
WARNING
When depressurizing the accumulator,
high pressure air will be released
from the accumulator charging valve.
Ensure body parts are well clear of
high pressure air or injury will result.
5.
Remove cap (4). To depressurize system
accumulator, go to and complete step 6 and stop.
To service system accumulator, connect chuck
(6) from air source to valve (5) before going to
step 6 and on.
CAUTION
Depressurize accumulator slowly.
Fast depressurization will result in
internal damage to accumulator.
6.
Turn valve outer nut (7) completely
counterclockwise to open valve.
7.
Charge accumulator (8) with dry air or nitrogen
to pressure indicated in chart. Read pressure
on gauge (3).
Change 3
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