S 714-026
(8)
Move the rudder control pedals through their full travel:
(a)
Make sure the rudder system moves freely.
(b)
Make sure the aft quadrant touches the stops.
S 094-027
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.
(9) Remove the TOW PIN from the nose landing gear (Ref 09-11-00/201).
____THE TEMPERATURE OF THE AIRPLANE MUST BE |5`F
NOTE: OF THE AMBIENT TEMPERATURE AND MUST BE STABLE FOR AT LEAST 1 HOUR.
-40-20 0 20 40 60 80100120 AMBIENT TEMPERATURE (DEGREES F)
RA AND RB CABLE TENSION LOADS
Rudder Control Cable Adjustment
Figure 403
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S 864-028
(10) Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) 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 864-029
(11) Put the FLT CONTROL HYD POWER - TAIL switches No. 1, 2, 3 and 4 on the overhead panel to the NORM position.
S 414-037
(12) Close the access panel above the drive mechanism for the horizontal stabilizer trim.
S 414-031
(13) Close the access door No. 312A.
S 414-032
(14) Install the access panel 324FR or 324FL.
S 414-033
(15) Install the ceiling panel (Ref 25/22-01/401).
S 864-034
(16) Remove the electrical power (Ref 24-22-00/201).
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747-400 MAINTENANCE MANUAL
RUDDER AFT QUADRANT - INSPECTION/CHECK
______________________________________
1. General_______
A. This procedure has one task. The task is an inspection of the rudder aft quadrant.
B. In this procedure you measure the inner or outer diameter of the parts which attach the rudder aft quadrant to the feel and centering mechanism. The parts include bearings, bolts, output clevis and the quadrant.
TASK 27-21-08-206-005
2. Rudder Aft Quadrant Inspection______________________________
A. Standard Tools and Equipment
(1)
Micrometer - O-1 inch
(2)
Vernier Caliper
B.
References
(1)
27-21-08/401, Rudder Aft Quadrant
C.
Access
(1)
Location Zone 323 Vertical Stabilizer Front Spar to Rear Spar
D.
Procedure
S 026-002
(1)
Do this task: "Rudder Aft Quandrant Removal" (Ref 27-21-08/401).
S 226-003
(2)
Measure the parts for worn areas:
(a)
Remove the parts.
(b)
Use a micrometer or vernier caliper to measure the parts.
(c)
Compare the dimensions you measured with the permitted dimensions shown in Fig. 601.
(d)
Replace the parts that are not in the tolerance.
(e)
Install the parts.
S 426-004
(3) Do this task: "Rudder Aft Quadrant Installation"
(Ref 27-21-08/401).
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