4-53. LONGITUDINAL STRUT (CONT)
Longitudinal struts may be either weldments without setscrews, weldments with
setscrews on the end (centerlines) (illustrated), forgings without setscrews, or
forgings with setscrews offset 30 degrees from the centerline (illustrated). The end
of the weldment is slightly thicker than the outer race of the bearing. The end of
the forging is approximately the same thickness as the outer race. Bearing
installation with vary slightly between configurations.
Remove corrosion preventive coating from outer diameter of new bearings before installation.
Do not orient fracture in bearing outer ring in line with setscrew hole.
Install plain bearing (3) into each end of longitudinal strut (2). If strut is weldment, make sure outer race of plain
bearing is centered in socket within 0.30 inch. If strut is forging with setscrews, make sure outer race is flush with
side of strut that has punched countersink or X reference mark. Forgings without setscrews do not have reference
marks. Ensure that outer race is centered in strut and does not protrude from either side.
Apply thread locking compound to two setscrews (1), if applicable, and install setscrews (1) into longitudinal strut (2)
to secure plain bearings (3). If strut is forging, torque setscrews to 50 - 70 lb-in. (5.5 - 7.7 Nm).
When staking plain bearings, use fixtures as necessary to support strut rod ends
and bearings, or the bearing may be forced out of centered position in rod end,
If desired, using a center punch, stake each plain bearing (3) in three places, 120 degrees apart on each side of
longitudinal strut (2). Peen material from strut rod end over edge of outer race.
4-262 Change 3