S 864-028
 (20)
 On the Pilot's Overhead Maintenance Panel P461, put the four FLT CONTROL HYD POWER - TAIL switches in NORM.

 (21)
 Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 864-030
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747-400 MAINTENANCE MANUAL
 RUDDER PEDAL ASSEMBLY - INSPECTION/CHECK
________________________________________
 1.  General_______
 A.  This procedure has one task. The task is an inspection of the rudder pedal assembly.
 B.  In this procedure you measure the inner or outer diameter of the parts which attach the rudder pedal assembly to the nose gear steering. The parts include bearings, bolts and spacers.
 C.  You must disassemble the rudder pedal assembly to do this procedure.
 TASK 27-21-07-206-001
 2.  Rudder Pedal Assembly Inspection________________________________
 A.  Standard Tools and Equipment
 (1)  
Micrometer - 0-1 inch, 1-2 inch, and 2-3 inch

 (2)  
Vernier caliper

 B.  
References

 (1)  
27-21-07/401, Rudder Pedal Assembly

 C.  
Access

 (1)  
Location Zone 221 Control Cabin, LH 222 Control Cabin, RH 211 Passenger Cabin-Nose to First Door, LH 212 Passenger Cabin-Nose to First Door, RH

 D.  
Procedure

 (1)  
Do this task: "Rudder Pedal Assembly Removal" (Ref/27-21-07/401).

 S 226-003

 (2)  
Measure the parts for worn areas:

 (a)  
Remove the parts.

 (b)  
Use a micrometer or a vernier caliper to measure the parts.

 (c)  
Compare the dimensions you measured with the permitted dimensions shown in Fig. 601.

 S 026-002
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 (d)  
Replace the parts that are not in the tolerance.

 (e)  
Install the parts.

 S 426-004
 (3)  Do this task: "Rudder Pedal Assembly Installation" (Ref 27-21-07/401).
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SEE A
A
B
B A
2 2
C
D
D
C A
2
RUDDER PEDAL BRAKE PUSHRODS HAVE THE
SLIP FIT BEARINGS, THEREFORE SOME
MOVEMENT IS EXPECTED DURING THE CHECK.

Rudder Pedal Assembly Wear Limits Figure 601 (Sheet 1)
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747-400
MAINTENANCE MANUAL

Rudder Pedal Assembly Wear Limits
Figure 601 (Sheet 2)

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