TM 55-1520-240-23-1
1-65
SERVICE UTILITY SYSTEM APU START MODULE ACCUMULATOR
(Continued)
1-65
4.
If pressure indicated on gage (4) is within
maximum and minimum limits shown in chart,
go to step 12. If pressure is not within limits, go
to step 5.
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.
5.
Loosen cap (5) on charging valve (6) one or two
turns. Let any trapped air escape.
6.
Remove cap (5). Connect chuck (7) from air
source to valve (6).
7.
Remove lockwire from outer nut (8). Hold body
of valve (6) with wrench. Turn valve outer nut to
left one or two turns to open valve.
8.
Charge accumulator (9) with dry air or nitrogen
to pressure indicated in chart. Read pressure
on gage (4).
9.
Tighten nut (8).
10.
Shut off air source. Remove chuck (7).
1-250
