G07084G42390
Rudder Hinge Installation 500
27-21-21 Figure 401 (Sheet 1) Feb 20/88
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Rudder Hinge Installation
Oct 20/91 Figure 401 (Sheet 2) 27-21-21
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
D. Place rudder hinge segment into position and install internal-wrenching bolts with minimum torque.
(1) At hinge No. 2 or 7, install the bonding jumper.
E. Coat hinge pivot bolt with corrosion preventive compound. Install bolt in hinge pivot point with countersunk washer under head.
(1) At hinge No. 2, install the bonding jumper.
F. Install washer and nut on hinge pivot bolt hand-tight.
G. Tighten internal-wrenching bolts equally to secure rudder hinge segment to structure. Tighten No. 2 hinge segment bolts 140 to 160 pound-inches and No. 1, 3, 4, 5, 6, and 7 hinge segment bolts 70 to 80 pound-inches.
H. Tighten hinge pivot nut on hinges No. 1 and 2, 95 to 110 pound-inches. Continue to turn nut to align cotter pin hole. Maximum alignment torque permitted is 190 pound-inches. Install cotter pin.
I. Tighten hinge pivot nut on hinges No. 3, 4, 5, 6, 7, 60 to 85 pound-inches. Continue to turn nut to align cotter pin hole. Maximum alignment torque permitted is 140 pound-inches. Install cotter pin.
J. Install hinge coverplates.
K. Remove rigging pin R-3.
L. Use the milliohmmeter to make sure there is a maximum of 0.01 ohms between the rudder and the vertical fin.
M. Restore airplane to normal hydraulic configuration (Ref 27-21-0 MP).
500
27-21-21 Page 404 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Apr 01/97
RUDDER HINGES - REMOVAL/INSTALLATION
EFFECTIVITY
Airplanes with Graphite/Composite Rudder
1. General
A. The rudder is attached to the vertical fin at seven hinge points. Each of the rudder hinge segments may be replaced individually.
B. The vertical fin contains five removable hinge segments. The two lower hinge points are contained in structural members.
2. Equipment and Materials
A. Corrosion Preventive Compound - BMS 3-24 (Ref 20-30-21)
B. Sealant - BMS 5-95 (Ref 20-30-21)
C. Rigging Pins Kit - F70207-3, -52, -61, or -84.
REF NO. F70207-( ) DIAMETER (INCHES) LENGTH (INCHES) FUNCTION
R-3 -11 0.309-0.311 6.7 +0.25 Rudder Fwd Quadrant
D. Milliohmmeter - 0 to 0.1 ohm range.
3. Prepare to Remove Rudder Hinge
A. Place rudder trim control wheel in neutral position.
B. Remove rudder systems A, B, and standby hydraulic power (Ref 27-21-0 MP).
C. Install rigging pin R-3 in forward quadrant.
4. Remove Rudder Hinge (Fig. 401)
A. Remove selected hinge coverplates from rudder leading edge.
B. Disconnect bonding jumper from hinge No. 3.
C. Before incorporation of SB 51-1011, disconnect bonding jumper from hinge No. 7.
D. After incorporation of SB 51-1011, disconnect bonding jumper from station 227.57.
E. Remove rudder hinge bolts.
F. Remove two bolts and separate bearing bars from rudder hinge segments.
G. Remove bolts and separate vertical fin hinge segment from fin.
5. Install Rudder Hinge (Fig. 401)
A. Remove rudder systems A and B hydraulic power (Ref 27-21-0 MP). Check that rigging pin R-3 is installed in forward quadrant.
B. Check for allowable wear between rudder hinge and rudder hinge bolt (Ref 27-21-12 I/C).
C. Place vertical fin hinge segment into position and install bolts, washers, and nuts. Tighten bolts 50 to 70 pound-inches.
D. Place bearing bars in rudder hinge segments and install two bolts and bushings with minimum torque.
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