TM 55-1520-240-23-1
1-72
SERVICE AFT LANDING GEAR SHOCK STRUT (AIR)
(Continued)
1-72
INFLATE STRUTS
NOTE
Service both struts at same time if two
compressors are available.
4.
Connect chuck (5) from air source to valve (2)
of right strut.
5.
Add air until 1-1/2 inches of piston (2) shows.
Record air pressure needed.
NOTE
1-1/2 inch of piston, measured from
top of machined arc, equals 1/2 inch
strut extension. Measurement to top
of arc is for initial extension only.
6.
Shut off air by turning outer valve nut (3) to right.
Disconnect chuck (5).
7.
Repeat steps 4 thru 6 for left strut.
8.
Deflate right strut (steps 1 and 2).
9.
Inflate right strut again to 1-1/2 inch. (Repeat
steps 4 thru 6; then go to step 10.)
10.
Note recorded pressure needed to inflate left
strut. Note lower of two recorded pressures
needed to inflate right strut.
NOTE
Only NOMINAL pressure readings are
shown on the landing gear servicing
plate.
Chart dimension A for both struts is
measured from top of exposed portion
of strut to center of pin. It should be
the same within 1/2 inch. If difference
is more, service struts with fluid (Task
1-70).
11.
Find noted pressures on chart. Read chart
DIMENSION A next to pressure.
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