S 864-003
(2)
On the Pilot's Overhead Maintenance Panel P461, put the four FLT CONTROL HYD POWER - TAIL switches in SHUTOFF.
S 864-005
(3)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P180, DC Power Distribution Panel
1) 180H8, ELEV/RUD VLV SYS 1
2) 180E7, ELEV/RUD VLV SYS 2
3) 180H23, ELEV/RUD VLV SYS 3
S 864-002
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A
747-400
MAINTENANCE MANUAL
RUDDER PEDAL ADJUSTMENT CRANK
RUDDER PEDAL (2 LOCATIONS)
FLEXSHAFT RIG PIN R-1 OR R-2
RUDDER
PEDAL ARM
(2 LOCATIONS)
BRAKE BELLCRANK (2 LOCATIONS)
SEE A
RIG PIN R-3
RUDDER PEDAL SUPPORT SHAFT
RIG PINBRAKE PUSHROD B-1 OR(2 LOCATIONS) B-2 2QUADRANT PUSHROD (2 LOCATIONS)
RUDDER
FORWARD
FWD QUADRANT
FLEX SHAFT NOTE: THE CAPTAIN'S RUDDER PEDAL ASSEMBLY IS SHOWN. THE FIRST OFFICER'S RUDDER PEDAL ASSEMBLY
SUPPORT IS EQUIVALENT.
STRUCTURE
WASHER SHAFT
FWD
RETAINING
1 R-1 IS FOR THE CAPTAIN'S ASSEMBLY NUT
R-2 IS FOR THE FIRST OFFICER'S ASSEMBLY
JACKSHAFT FOR THE
2 B-1 IS ON THE LEFT BRAKE BELLCRANK RUDDER FORWARD
B-2 IS ON THE RIGHT BRAKE BELLCRANK QUADRANT
A
Rudder Pedal Assembly Installation
Figure 401
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747-400 MAINTENANCE MANUAL
4) 180E22, ELEV/RUD VLV SYS 4
(b) (c) P414 Power Distribution Center Panel-Left 1) 414D8, CAPT PWR SEATP415 Power Distribution Center Panel-Right 1) 415H32, F/O PWR SEAT
S 014-058
(4)
PASSENGER AIRPLANES; Open the farthest forward left ceiling panel in the main deck to get access to the rudder pedal assembly (AMM 25-22-01/401).
S 014-059
(5)
FREIGHTER AIRPLANES; Open the farthest forward left ceiling panel in the main deck to get access to the rudder pedal assembly (AMM 25-59-01/401).
S 034-032
(6)
Disconnect the brake pushrod from the bellcrank.
S 034-033
(7)
Disconnect the quadrant pushrods from the two rudder arms.
S 034-034
(8)
Disconnect the flexshaft from the forward quadrant jackshaft.
(a)
Loosen the shaft retaining nut on the flexshaft, and push it forward to the quadrant jackshaft.
(b)
Hold the shaft retaining nut and washer, and pull the flexshaft out of the jackshaft.
S 014-047
(9)
Remove the cover extension.
S 014-036
(10)
Remove the upper cover assembly of the rudder pedal (Fig. 402):
(a)
Remove the screws from the sides of the rudder pedal cover.
(b)
With the flexshaft attached, lift the rudder pedal cover off the floor and move it away.
NOTE: Pull the flexshaft carefully through the floor structure
____ when you remove the cover.
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747-400
MAINTENANCE MANUAL
RUDDER PEDAL COVER
SEE A
LOWER COVER
HEEL REST UPPER COVER ASSEMBLY
FLEXSHAFT
CONTROL COLUMN
COVER EXTENSION
SCREW (8 LOCATIONS)
RUDDER PEDAL COVER
A
Rudder Pedal Cover Installation Figure 402
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