TM 55-1520-240-23-4
5-97.1
INSPECT PITCH LINK WITH TEFLON BEARINGS ON HELICOPTER
(Continued)
5-97.1
2.
Check for bond looseness in upper bearing (4)
and lower bearing (5) as follows:
a.
Check that Teflon liner (7) has not been
squeezed out around bearing ball (6). If
some cloth threads show, this is not always
a sign of bond failure. If strings of fabric
are coming out from around bearings (4
and 5), or if liner shows 1/32 inch or more,
replace bearing (4 or 5) (Task 5-98) and go
to Follow-On Maintenance. If less than 1/32
inch of liner shows, go to step b.
b.
Have helpers support blade (1). Check pitch
link rod end (8). If rod end is not centered
on bearing ball (6), replace bearing (4 or 5)
(Task 5-98). Shake rod end from side-to-side.
Movement shows that the Teflon liner (7) is
worn or missing. Have helpers lower blade
(1). Replace bearing (4 or 5) (Task 5-98). If
rod end is centered and will not shake from
side-to-side, go to Follow-On Maintenance.
5-586
