RUDDER - REMOVAL/INSTALLATION
EFFECTIVITY
Airplanes with Graphite/Composite Rudder
1.  Equipment and Materials
A.  Rudder Removal/Installation Sling - C27003-1 
B.  Rudder loading block
(1)  Loading block to distribute loads over a minimum of 5 square inches of rudder trailing edge. Suggested loading blocks: 0.125-inch thick (minimum) by 3 inches by 3 inches approximately. Wood or fiberglass, suitably padded to prevent skin damage.
C.  Corrosion Preventive Compound - BMS 3-24 (AMM 20-30-21/201)
D.  Sealant - BMS 5-95 (AMM 20-30-21/201)
E.  Milliohmmeter - 0 to 0.1 ohm range
2.  Prepare for Removal (Fig. 401)
A.  Remove rudder systems A, B, and standby hydraulic power (Ref 27-21-0 MP).
B.  Remove access panels 9512, 9514, and 9515 from vertical fin.
C.  Remove hinge coverplates and fairings from both sides of rudder.
D.  Remove seals and seal attachment plates from both sides of fin at rudder balance weight slot.
E.  Install rudder removal/installation sling.
(1)  
Remove vertical fin trailing edge seal segments covering rudder hinge locations No. 4 and

5.

(2)  
Remove vertical fin hinge segments and rudder hinge bearing bars at hinge locations No. 4 and 5.

(3)  
Remove sling attachment bolts from stowed positions in sling sides.

(4)  
Install sling crossarms on rudder at hinge locations No. 4 and 5 with sling attachment bolts.

(5)  
Assemble remainder of sling per Fig. 402.

(6)  
Attach crane hook to sling.

3.  Remove Rudder (Fig. 401)
A.  Disconnect rudder power control unit and standby actuator from rudder.
B.  Disconnect and remove input rod between input crank and torque tube. Removing rod will prevent possible rod damage during rudder travel check.
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.  Disconnect bonding jumper from hinge No. 3.
F.  Remove hinge bolts at hinges No. 2, 3, and 6. Remove shim at hinge No. 2.
WARNING:  CRANE MUST BE READY TO SUPPORT WEIGHT OF RUDDER STEADILY WHEN HINGE BOLTS ARE REMOVED. SUPPORT UPPER AND LOWER ENDS OF RUDDER TO GUARD AGAINST DAMAGE. PERSONNEL MUST EXERCISE CAUTION AGAINST INJURY.
G.  Remove hinge bolts at hinges No. 1 and 7.
Apr 01/97 27-21-12 Page 401
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

 Rudder Installation  5D1 
27-21-12 Page 402  Figure 401 (Sheet 1) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Feb 20/87 

5D1  Rudder Installation 
Aug 01/94  Figure 401 (Sheet 2) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  27-21-12 Page 403 

 Rudder Installation  5D1 
27-21-12 Page 404  Figure 5401 (Sheet 3) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Oct 20/84 

500  Rudder Installation 
Feb 20/87  Figure 401 (Sheet 4) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  27-21-12 Page 405 

H.  Remove rudder while using guy ropes to keep rudder clear of structure.
NOTE: Rudder weighs approximately 160 pounds.
I.  Hoist rudder onto padded temporary support.
4.  Prepare for Installation
A.  Remove rudder systems A, B, and standby hydraulic power (Ref 27-21-0 MP)
B.  Check that access panels 9512, 9514, and 9515 are removed from vertical fin, and check that hinge coverplates and fairings on both sides of rudder are removed.
C.  Check for allowable wear at rudder installation points as follows:
(1)  
Check for wear at rudder hinges (Ref 27-21-12 I/C).

(2)  
Check for wear at rudder power control unit attachment to rudder (Ref 27-21-91 I/C).

(3)  
Check for wear at standby rudder actuator attachment to rudder (Ref 27-21-141 I/C).

D.  If not installed, install rudder sling (Fig. 402).
E.  Remove bearing bar at hinge No. 2.
F.  Remove seals and seal attachment plates from both sides of fin at rudder balance weight slot, if required. This is necessary to provide adequate clearance at balance weights when positioning rudder.
G.  Loosen all fin trailing edge seals and push seals to maximum forward position.
H.  Position rudder to fin using rudder sling. Use guy ropes to keep rudder from striking structure. Slide bearing bars at hinges No. 3, 6 and 7 up or down as required for engagement with vertical fin clevises.
　
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