TM 1-1520-238-23
7-122
Change 7
7.34.
DIRECTIONAL SERVOCYLINDER ROD END REPLACEMENT – continued
WARNING
Distance between center of rod end
bore and top of piston shall not ex-
ceed 3.06 INCHES. A measurement
less than 3.06 INCHES is necessary to
provide enough thread engagement to
maintain safe flight. Failure to follow
maintenance instructions may result
in serious injury or death of
crewmembers and/or serious damage
to the helicopter.
CAUTION
To prevent breakdown of cylinder piston
rings, rotation of piston rod is limited to
45 DEGREES so that rod end can be
alined with bellcrank during rigging and
installation. Adjustments are made by
turning rod end, not piston rod.
c. Install piston rod end (7) with lock (3) and nut
(5) on piston rod (2).
(1) Hold piston flats (4).
(2) Screw rod end (7) with lock (3) and nut (5) on
piston rod (2).
(3) Adjust rod end (7) so distance A between
center of rod end bore (15) and top (16) of
piston rod (2) is within 0.016 INCH of the
measurement recorded in paragraph 7.34.3.
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A
M04-777-6A
16
15
2
5
3
7
4
