TM 1-1520-238-23
Change 6
1-133
1.42.
TAIL LANDING GEAR SHOCK STRUT SERVICING – NITROGEN – continued
d. Inflate shock strut (5). Torque nut (6) to
60 INCH-POUNDS.
(1) Inflate shock strut (5) to 794 10 PSIG. Use
nitrogen truck.
(2) Measure distance from center of valve (2) to
top of gland nut (8). Distance shall be 5.12
0.030 INCHES.
(3) Hold valve (2).
(4) Torque nut (6) to 60 INCH-POUNDS. Use
torque wrench.
e. Inspect (QA).
f. Disconnect hose (1) from valve (2).
(1) Remove nitrogen pressure.
(2) Hold valve (2).
(3) Remove nut (3) and hose (1).
(4) Install cap (4) on valve (2).
(5) Lockwire valve (2) to shock strut (5) if re-
moved. Use wire (item 226, App F).
g. Check shock strut for leaks.
h. If required, lower tail landing gear and remove
jack (para 1.68).
END OF TASK
8
4
X
2
5
OPTIONAL METHOD ; WITH WHEEL
FREE OF GROUND AND STRUT
FULLY EXTENDED (X=5.12 ±0.030 INCHES)
INFLATE TO 794 ±10 PSIG
SHOCK STRUT INFLATION INSTRUCTIONS
LOOSEN GAS CHARGING VALVE UPPER 3/4 INCH HEX
NUT UP TO A MAXIMUM OF 3/4 OF A TURN. INFLATE
WITH DRY NITROGEN UNTIL PRESSURE AND
DISTANCE MATCH ONE PAIR OF FIGURES:
(TAILWHEEL FREE OF GROUND AND STRUT FULLY EXTENDED)
M04-1615-6
4
2
1
2
3
M04-1615-4
6
5
