(i) Install the bushings (5), the washer (2), and the bolt (1) in
hinges No. 5, 9, 10, and 11.
(j) Make sure the lockwashers (6) are installed correctly at hinges
No. 5, 9, 10, and 11.
(k) Lower the rudder until the bushing (68) (at hinge No. 8) has no
clearance above it or below it.
(l) Tighten the threaded bushings (52) in hinges No. 7 and 8 with
your hand. Tighten them until there is no clearance between
them and the bearings in the vertical fin.
(m) On hinge No. 7, add washers (63) if it is necessary to make a
clearance of 0.02-0.05 inches between the washers (63) and the
threaded bushings (52) (Fig. 404).
(n) Apply sealant to the mating surfaces of the washers (63), and
the bushings (52).
(o) Install the washers (61) and the nuts (60) (do not tighten the
nuts) at hinges No.7 and 8. Also, install the washers (62)
until the lockbolts (59) engage the nuts (60) correctly.
(p) Install the washers (53) and the nuts (55) (do not tighten the
nuts) at hinges No.7 and 8. Also, install the washers (54)
until the cotter pins (56) engage the nuts (55) correctly.
(q) Make sure the antirotation lug (50) on hinge No. 7 is engaged
with the stud (51).
(r) Make sure the antirotation lug (66) on hinge No. 8 is engaged
with the stud (67).
(s) Tighten the nuts (60) to 2000-2400 pound-inches.
(t) If it is necessary, tighten the nuts (60) to a maximum of 3200
pound-inches to let you install the lockbolt (59).
(u) Install the lockbolt (59), the washer (58), and the nut (57).
(v) Tighten the nuts (55) to 300-500 pound-inches.
(w) If it is necessary, tighten the nuts (55) to a maximum of 700
pound-inches to let you install the cotter pins (56).
(x) Install the cotter pins (56).
(y) Install the washer(s) (46), and the nut (44), on hinge No. 6.
NOTE: Install the washers (46) until the cotter pin (45)____
engages the nut (44) correctly.
(z) Tighten the nut (44) to 1300-2000 pound-inches.
NOTE: Put the nut in a position where you can install the____
cotter pin (45).
(aa) Install the cotter pin (45).
(ab) Install the bushings (5), the washers (2, 4), and the nuts (3) at hinges No. 5, 9, 10, and 11.
(ac) Tighten the nuts (3) to 60-85 pound-inches.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-21-01
ALL ú ú 01 Page 432 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(ad) Install as many large washers (2) as it is necessary to get a clearance of 0.01-0.06 inch (Section A-A). 1) Tighten the nut (3) again, if you removed it.
S 144-065
(2) Clean the mating surfaces for the bonding jumpers.
S 434-066
(3) Install the bolt (40), the washer (41), and the nut (42) to connect the bonding jumpers.
S 764-067
(4) Use a bonding meter to make sure the resistance of the bonding jumper connection is less than 0.010 ohms.
S 094-068
(5) Disconnect the sling from the rudder.
S 434-069
(6) Install the blanking screws to fill the holes for the sling.
S 714-070
(7) Move the upper rudder slowly, with your hand, to the fully right and the fully left position.
S 714-071
(8) Make sure the rudder moves freely and smoothly.
S 434-097
(9) Do these steps to connect the power control package (PCP) to the upper rudder. (a) Make sure the bolt assembly (24) has all of these parts: housing assembly (20), cap (17), washers (19), cap screws (18), and lockwire on the cap screws. (b) Do these steps to install the bushing (22) on the bolt assembly (24). 1) Apply adhesive to the bushing (22). 2) Push the bushing (22) against the head of the bolt assembly (24) with a minimum force of 70 pounds. (c) Apply a thin layer of grease to the bolt assembly (24) and the bolt (9). (d) Install the bushing (8) and the bolt (9) in the upper actuator of the PCP.
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本文链接地址：747-400 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 2(75)
