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27-21-21
ALL ú ú 01 Page 411 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757
MAINTENANCE MANUAL
(d)
Install the washer (9) and the nut (10). Tighten the nut to 1000-1200 pound-inches (113-135 newton-meters).
(e)
Lock the nuts (16, 19) with wire. Make sure they cannot turn in a clockwise direction.
(f)
Lock the bushing (18) with wire. Make sure the bushing cannot turn.
S 824-015
(8)
Lower the rudder (25) until the load is on its hinges.
S 434-034
(9)
Connect these components to the rudder:
(a)
Do this step to connect the control rod (1) for the position transmitter: 1) Install the screw (2), washer (3), and the nut (4).
(b)
Do these steps to connect the three PCAs (10) and their reaction links (9): 1) Align the rod end bearings for the actuator and the
reaction link with the rudder connection points. 2) Apply the corrosion preventive compound to the bolts and bushings before installation.
3) Install the bolts (5), washers (7), bushings (6), and the nuts (8). Tighten the nuts to 1000-1400 pound-inches (113-158 newton-meters).
(c) Do these steps to connect the top jumper strap (20): 1) Install the bolt (21), washers (22, 23), and the nut (24). 2) Install the bolt (21), washers (22, 23), and the nut (24)
that connect the jumper strap (20) to the vertical fin (26).
NOTE: Tighten the nut (24) for the vertical fin (26) with
____ the rudder (25) in its neutral position and the jumper strap (20) straight.
3) Use the bonding meter to make sure the maximum bonding resistance is 1.0 ohm.
(d) Do these steps to connect the bottom jumper strap (32): 1) Install the bolt (33), washers (34), and the nut (35).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-21-21
ALL ú ú 01 Page 412 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
2) To adjust the strap length, loosen the bolt (29) and move the strap (32) through its clamp (28). 3) Use the bonding meter to make sure the maximum bonding resistance is 1.0 ohm.
S 394-016
(10)
Apply sealant to the bolts (21, 33), washers (22, 23, 34), nuts (24, 31, 35), and the ends of the jumper straps (20, 32).
S 374-017
(11)
Apply primer to the bolts (29, 33) as necessary.
S 094-040
(12)
Remove the rudder sling and install the bolts in the sling connection points.
S 824-035
(13)
Do the adjustment procedure for the rudder PCAs (Ref 27-21-00).
S 824-036
(14)
Do the adjustment procedure for the rudder position transmitter (Ref 27-28-00).
S 864-041
(15)
Make sure these circuit breakers on the overhead panel, P11, are closed:
(a)
EICAS (6 locations)
S 094-022
(16)
Remove rig pin R4 from the middle PCA.
S 414-023
(17)
Close access panels 324AL, 324BL, 324CL, 324DL, and 324EL (AMM 06-42-00).
(18)
Supply pressure to the left, right, and center hydraulic systems (Ref 29-11-00).
S 864-018
(19)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:
(a)
11H17, FLT CONT SHUTOFF TAIL LEFT
(b)
11H18, FLT CONT SHUTOFF TAIL CTR
S 864-037
WARNING:_______ KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN
HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER,
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本文鏈接地址：757 AMM 飛機維護(hù)手冊 飛行操縱 FLIGHT CONTROLS 2(90)
