(2)
Access Panels 324EL Left Side Vertical Stabilizer Midway Down Lower Rudder 324FR Right Side Vertical Stabilizer Between Upper and Lower
Rudder 324FL Left Side Vertical Stabilizer Between Upper and Lower Rudder
C. Prepare for the Override Mechanism Installation
S 862-049
(1) Make sure that these circuit breakers are open and DO-NOT-CLOSE tags are attached:
(a)
P6, Main Power Distribution Panel
1) 6J24, ELEV/RUD SENSOR
2) 6J25, RUD/ELEV IND
(b)
P7, Overhead Circuit Breaker Panel
1) 7D7, FLT CONT CMPTR SERVO L
2) 7D8, FLT CONT CMPTR PWR L
3) 7D12, FLT CONT CMPTR SERVO C
4) 7D13, FLT CONT CMPTR PWR C
5) 7D14, FLT CONT CMPTR SERVO R
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
6) 7D15, FLT CONT CMPTR PWR R
S 012-050
(2) Make sure that you remove the access panels 324EL, 324FL, and 324FR (optional)(AMM 06-09-07/201).
D. Override Mechanism Installation
S 432-051
(1) Remove the bonded-bolt assembly from the override mechanism.
(a) Keep one of the large washers and one small washer on the end of the bonded-bolt assembly.
S 422-052
(2)
Hold the override mechanism in its position.
S 422-085
(3)
Install the bonded-bolt assembly.
S 432-090
(4)
Install the large washer and nut, small washer and nut on the bonded-bolt assembly.
CAUTION: DO NOT TIGHTEN THE LARGE NUT AGAIN AFTER YOU TIGHTEN
_______ THE SMALL NUT. DAMAGE TO THE BONDED-BOLT ASSEMBLY CAN OCCUR.
(a) Tighten the large nut to 60-80 pound-inches and the small nut to 30-40 pound-inches.
S 432-056
(5) Connect the control rod to the override mechanism cam with the bonded-bolt assembly.
CAUTION: DO NOT TIGHTEN THE LARGE NUT AGAIN AFTER YOU TIGHTEN
_______ THE SMALL NUT. DAMAGE TO THE BONDED-BOLT ASSEMBLY CAN OCCUR.
(a) Tighten the large nut to 60-80 pound-inches and the small nut to 30-40 pound-inches.
S 432-057
(6) Connect the clevis to the output crank of the override mechanism with the bonded-bolt assembly.
CAUTION: DO NOT TIGHTEN THE LARGE NUT AGAIN AFTER YOU TIGHTEN
_______ THE SMALL NUT. DAMAGE TO THE BONDED-BOLT ASSEMBLY CAN OCCUR.
(a) Tighten the large nut to 60-80 pound-inches and the small nut to 30-40 pound-inches.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 822-058
(7) Do the adjustment and Test of the Rollout Power Control Package and Override Mechanism (Ref Paragraph 6).
TASK 22-13-04-202-059
6. Rollout Power Control Package and Override Mechanism Adjustment_______________________________________________________________
A. Standard Tools and Equipment
(1) Rig Pins (2) - MS20392-4 (0.311 +0.000/-0.002 inch diameter rod, 3.0 inches long minimum)
B. References
(1)
AMM 06-09-07/201, Fin and Rudder Access Doors and Panels
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
C. Access
(1)
Location Zone 324 Vertical Stabilizer Between Rear Spar and Trailing Edge
(2)
Access Panels 324EL Left Side Vertical Stabilizer Midway Down Lower Rudder 324FR Right Side Vertical Stabilizer Between Upper and Lower
Rudder 324FL Left Side Vertical Stabilizer Between Upper and Lower Rudder
D. Prepare for the Rollout Power Control Package and Override Mechanism Adjustment
S 862-060
(1) Make sure that these circuit breakers are open and DO-NOT-CLOSE tags are attached:
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