TM 55-1520-240-23-9
11-233
INSTALL AFT LCT YOKE
(Continued)
11-233
6.
Position yoke (1) in support (17). Lug (13) shall
face aft.
FLIGHT SAFETY PARTS
This is an installation critical flight
safety part. All aspects of its assembly
and installation including stackup
of associated components must be
ensured.
Ensure special countersunk washer is
installed properly under the head of
the yoke shaft. Countersink must face
towards hex head of the shaft.
Ensure slip bushing and flanged
bushing are installed in inboard lug
of the structural clevis prior to yoke
shaft installation.
Ensure flanged bushing is properly
installed in the outboard lug of the
structural clevis prior to yoke shaft
installation.
Follow proper nut torquing sequence
to allow for yoke assembly bearing
preloading procedure.
Apply final nut torque and install cotter
pin as required.
Loose attachments within flight control
primary linkage will degrade aircraft
control. Missing components will
cause loss of control.
Support shaft must be installed dry.
7.
Insert support shaft (16), head aft, through
support (17) and yoke (1). Make sure threads of
shaft are dry.
8.
Install washer (15) and nut (14). Torque nut to
1300 inch-pounds.
9.
Back off nut (14) until yoke (1) can be moved
without turning shaft (16).
10.
Torque nut (14) to 500 to 800 inch-pounds.
11.
If cotter pin holes will not align, remove nut (14)
and add one or two washers (15). Repeat step
10.
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