32-51-00
 ALL  ú ú 01 Page 517 ú Jun 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 865-132
 (9)  
Release the pressure from hydraulic system No. 1 (AMM 29-11-00/201).

 J.  
Test Rudder Pedal Steering and Ground Sensing

 S 865-060
 (1)  
Provide electrical power (AMM 24-22-00/201).

 S 865-061

 (2)  
Close the following circuit breakers:

 (a)  
P7 Overhead Circuit Breaker Panel
 1) 7C02 FMCS CDU L
 2) 7C03 FMCS CDU CTR
 3) 7C24 FMCS CDU R
 4) 7F08 UPR EICAS
 5) 7F09 EIU L
 6) 7F10 EIU C
 7) 7F14 LWR EICAS
 8) 7F15 EIU R
 9) 7F22 LANDING GEAR DSP & CONT PRI
 10) 7F23 LANDING GEAR DSP & CONT ALTN
 11) 7F25 PSEU SECT 1
 12) 7F26 PSEU SECT 2
 13) 7G25 NOSE GR STRG PRI
 14) 7G26 NOSE GR STRG ALTN

 (b)  
P414 Power Distribution Center - Left
 1) 414L08 CMC L

 (c)  
P415 Power Distribution Center - Right
 1) 414L39 CMC R

 (d)  
P180 DC Power Distribution Panel
 1) 180 D16 CMC SW

 S 865-127
 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 CAND MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (3)
Pressurize airplane hydraulic system No. 1 (AMM 29-11-00/201).

 S 715-063

 (4)  
Do a check of the left rudder pedal.

 (a)  
Push the captain's left rudder pedal fully forward and hold in that position. 1) Make sure that the steering collar has turned 7 (| 1)

 degrees from the neutral position.
 2)  Release the captain's rudder pedal and permit it to go to the neutral position by the action of the rudder control system return spring.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 518 ú Jun 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 3) 4)  Make sure that rig pin R-3 fits loosely in the rudder quadrant.Make sure that the steering collars go to the neutral position within 2.0 degrees.
 S 715-064
 (5)  Repeat the above check but push the captain's right pedal. (a) Make sure the results are the same.
 S 865-065
 (6)  Set the EIU select switch to "L".
 S 485-066
 (7)  Actuate the primary (S800) and alternate (S801) nose gear squat sensors with the actuation tool.
 S 745-067
 (8)  Do a bite test of the nose gear steering with the primary and alternate squat sensors activated. (a) Select page 2 of the main menu on the CDU. (b) Select OTHER FUNCTIONS. (c) Select INPUT MONITORING. (d) Enter E/70/270/00 on the CDU scratch pad on page 1. (e) Push line select key 1L. (f) Make sure that the status of bit 21 on the CDU display of label 270 on page 1 is a 1 (NG NOT COMPRESSED). (g) Push the NEXT PAGE button. (h) Enter E/70/272/00 on the CDU scratch pad on page 2. (i) Push line select key 1L. (j) Make sure that the status of bit 21 on the CDU display of label 272 on page 2 is a 1 (NG NOT COMPRESSED). (k) Push the NEXT PAGE button. (l) Enter C/026/010/10 on the CDU scratchpad on page 3. (m) Push line select key 1L. (n) Make sure that the status of bit 19 on the CDU display of label 010 on page 3 is a 0 (the two electrical interconnect actuators are NORMAL).
 S 715-068
 (9)  Do a check of the deactivated NG steering system. (a) Push the captain's left rudder pedal fully forward and hold in that position. 1) Make sure that the steering collar index mark is within 2.0 degrees of zero.
 S 715-069

 (10)
 Repeat the above check but push the captain's right rudder pedal.

 (a)
Make sure the results are the same.

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