(g)
Connect the input control rod (6) to the input crank (29) with the bolt (7), washer (8) and nut (9). 1) Tighten the nut (9).
(h)
Connect the control rod (15) to the output crank (28) with the bolt (10), washers (11 and 13) and nuts (12 and 14). 1) Tighten the large nut (12) to 60-80 pound-inches. 2) Tighten the small nut (14) to 30-40 pound inches.
NOTE: Do not tighten the large nut (12) after you tighten
____ the small nut (14).
S 644-016
(2)
Lubricate the rudder feel, centering and trim mechanism
(AMM 12-21-17/301).
I.
Do the Operational Test of the Rudder Feel, Centering and Trim Mechanism
S 494-020
(1) Install rig pin E-2 in the bottom of the captain's control column.
NOTE: With the rig pin E-2 installed, the elevator control system
____ will not operate. The elevator control system has hydraulic power when the rudder has power.
S 494-051
(2) Install the rig pin R-4 in the feel, centering, and trim mechanism (Fig. 401).
S 494-021
WARNING:_______MAKE SURE THE NOSE WHEELS POINT FORWARD. IF THE NOSE WHEELS DO NOT POINT FORWARD, THE NOSE GEAR CAN QUICKLY TURN TO THE CENTERED POSITION WHEN YOU REMOVE THE TOW PIN. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(3) Install the TOW PIN at the steering metering valve for the nose landing gear (AMM 09-11-00/201).
NOTE: The nose gear will turn during the rudder operation if you
____
do not install the TOW PIN.
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747-400 MAINTENANCE MANUAL
S 864-022
(4)
Supply the electrical power (AMM 24-22-00/201).
S 864-023
(5)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P6, Main Power Distribution Panel
1) 6H24, RUD/ELEV SENSOR
2) 6H25, 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
6) 7D15, FLT CONT CMPTR PWR R
(c)
P180, DC Power Distribution Panel
1) 180E7, ELEV/RUD VLV SYS 2
2) 180E22, ELEV/RUD VLV SYS 4
3) 180H8, ELEV/RUD VLV SYS 1
4) 180H23, ELEV/RUD VLV SYS 3
S 864-024
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(6)
Supply the systems No. 1 and 2 hydraulic power (AMM 29-11-00/201).
S 864-025
(7)
Put the FLT CONTROL HYD POWER - TAIL switches No. 1, 2, 3, and 4 on the overhead panel to the NORM position.
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747-400 MAINTENANCE MANUAL
S 864-027
(8)
Connect the pressure source to the lower left and right pitot-static systems (AMM 34-11-00/201).
S 864-028
(9)
Do one of the two subsequent procedures to extend the servo units for the two ratio changers:
(a)
Procedure 1 (For airplanes with two SRM's P/N 285U0015-108 or later), see procedure 1 (AMM 27-21-00/501).
WARNING:_______MAKE SURE THE FLAPS ARE RETRACTED. IF THE FLAPS ARE NOT RETRACTED, THEY CAN MOVE WHEN YOU PRESSURIZE THE PITOT-STATIC SYSTEM. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(b)
Procedure 2 (airplanes with any combination of SRM part numbers installed), supply 3.37-3.52 psi (363-371 kts) to the pitot-static system to extend the servo units. 1) Supply pressure to the upper left pitot-static system to
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