TM 55-1520-240-23-9
11-96
INSTALL PALLET THRUST IDLER BELLCRANK
(Continued)
11-96
2.
On helicopters with 74 , perform the following
steps:
a.
Install nut (1) and washer (2) on bolt (3) about
mid-position.
b.
Insert bolt (3) in arm (4) of thrust idler
bellcrank (5). Install washer (6) and nut (7)
on bolt (3). Do not torque nut at this time.
c.
Remove two nuts (8 and 9), four washers
(10, 11, 12, and 13), and two bolts (14 and
15) from support (47).
d.
Remove slipfit bushings (16). Clean bushings
(16), bores, and inside diameter of bushing
(48) with dry cleaning solvent (E162) and
clean cloths (E120). Wear gloves (E184.1).
e.
Coat bushings (16) with epoxy primer
(E292.1). Install bushings (16) wet in support
(47). Wear gloves (E184.1).
f.
Position bellcrank (5) in support (47), arm
(4) up and forward. Install bolt (14), two
washers (11 and 10), and nut (8) in support
(47), outboard end.
g.
Install bolt (15), two washers (12 and 13),
and nut (9) in support (47), inboard end.
h.
Torque two nuts (8 and 9) to 30 to 45
inch-pounds. Install two cotter pins (17 and
18).
i.
Check bolts (14 and 15). Bolts shall not
rotate with torque less than 10 inch-pounds.
There shall be no axial looseness. If bolt
rotates or is loose, add washer under nut,
and repeat step h.
INSPECT
11-507
