TM 1-1520-238-23
3-73
3.20.
UPPER MAIN LANDING GEAR SHOCK STRUT EXTERNAL LEAKAGE REPAIR – continued
3.20.3. Deflate Shock Strut
a. Deflate shock strut assembly (1).
(1) Remove pneumatic valve cap (2) from shock
strut (1).
(2) Turn pneumatic valve nut (3) counterclock-
wise until resistance is felt, then loosen 1/2 to
3/4 turn to off seat strut (1). Allow high pres-
sure nitrogen to bleed off.
(3) Turn nut (3) clockwise after nitrogen has bled
off.
(4) Install cap (2) on strut (1).
3.20.4. Bleed Plug Packing Replacement
a. Deflate strut (1) (para 3.20.3).
b. Remove plug (4) from strut (1).
(1) Remove lockwire from plug (4).
(2) Remove plug (4) from port (5).
(3) Remove and discard packing (6).
c. Check plug (4) and plug port (5) for damage.
None allowed.
d. Install plug (4) in strut (1).
(1) Lubricate new packing (6). Use hydraulic fluid
(item 93, App F).
(2) Install packing (6) on plug (4).
(3) Install plug (4) on port (5).
(4) Lockwire plug (4) to two screws (7). Use wire
(item 224, App F).
e. Inspect (QA).
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