TM 1-1520-238-23
7-215
7.50.
SERVOCYLINDER CHECK VALVE REMOVAL/INSTALLATION – continued
7.50.3. Removal
a. Remove check valve (1) from servocylinder
(2).
(1) Remove lockwire. Remove check valve (1).
Use screwdriver bit set.
b. Remove and discard two packings (3) and
four backup rings (4) from two grooves (5).
7.50.4. Cleaning
a. Wipe removed and attaching parts with a
clean rag.
7.50.5. Inspection
a. Check valve cavity and check valve for nicks,
cracks, and stripped or damaged threads
(para 7.1).
b. Check removed and attaching parts for corro-
sion (para 1.49).
7.50.6. Installation
a. Install two new packings (3) and four backup
rings (4) on check valve (1).
(1) Lubricate two packings (3). Use clean
hydraulic fluid (item 92, App F).
(2) Install two packings (3) in grooves (5).
(3) Install one backup ring (4) on each side of
both packings (3).
b. Install check valve (1) in valve cavity (6).
Torque valve (1) to 35 INCH-POUNDS. Use
screwdriver bit set and torque wrench.
c. Lockwire check valve (1) to servocylinder (2).
Use wire (item 226, App F).
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