R  (3) If the steering angle on the MCDU is correct, do a check of the 
R  servovalve. 
R  (a) If the Fault Confirmation test was to be done only with the 
R  taxiway procedure, put the aircraft in the necessary 
R  configuration to let the nosewheels move freely to the left or 
R  the right : 
R  1_  If the check is to be done with the nosewheels on ground, do
R  these steps: 
R  NOTE : You will need two 1.2 m (3.93 ft.) square steel plates.____ 
R  - Position a steel plate in front of the nosewheels. 
R  - Apply a thick layer of COMMON GREASE (Material No. 04-004) 
R  to the upper surface of the steel plate. 
R  - Put the other steel plate on the top of the greased steel 
R  plate. 
R  - Move the aircraft and position the nosewheels on the greased 
R  steel plates (Ref. AMM TASK 09-10-00-584-002). 
R  NOTE : The procedure that uses the steel plates cannot be____ 
R  accurate if the friction between the steel plates does 
R  not let the nosewheels move freely. 
R  2_  If the check is to be done with the nosewheels off ground, do
R  these steps: 
R  - Lift the front of the aircraft until the nose wheels are 
R  clear of the ground (Ref. AMM TASK 07-11-00-581-003). 
R  - Compress the NLG shock absorber with the nosewheel jack 
R  until the dimension H is less than 350 mm (13.7795 in.) 
R  (Ref. AMM TASK 07-12-00-582-001) 
R  - Make sure that there is a sufficient clearance between the 
R  jack and the nose wheels to operate the nose wheel steering 
R  system. 
R  (b) Pressurize the Green hydraulic system 
R  (Ref. AMM TASK 29-10-00-863-001). 
R  (c) On the MCDU, get the STEERING DATA page for the BSCU SYS 1: 
R  - On the SYSTEM REPORT/TEST/L/G page, push the line key adjacent 
R  to the BSCU1 indication. 
R  - On the BSCU SYS 1 page, push the line key adjacent to the 
R  STEERING DATA indication. . 
R  - Push the line key adjacent to the REFRESH indication and make 
R  sure that the SELV ORDER parameter shows OPEN. 
R  NOTE : If the SELV ORDER parameter shows CLOSE get the STEERING____ 
R  DATA page for the BSCU SYS2 
R  - Push the line key adjacent to the REFRESH indication and 
R  make sure that the SELV ORDER parameter shows OPEN.

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R (d) Do a check of the servovalve:

R  1_  Push and hold the Captain left rudder-pedal fully forward and
R  make sure that the nose wheels move 6 deg. to the left. 
R  2_  Quickly release the rudder-pedal to the neutral position (+0.5
R  to -0.5 deg.). 
R  3_  Make sure that the nose wheels move back to the 0 deg.
R  position. 
R  4_  When movement of the nose wheels stops, on the MCDU on the
R  STEERING DATA page: 
R  - Push the line key adjacent to the REFRESH indication. 
R  - Record the servovalve current SSV CURRENT parameter (ISV1). 
R  5_  Push and hold the Captain right rudder-pedal fully forward and
R  make sure that the nose wheels move 6 deg. to the right. 
R  6_  Quickly release the rudder-pedal to the neutral position (+0.5
R  to -0.5 deg.). 
R  7_  Make sure that the nose wheels move back to the 0 deg.
R  position. 
R  8_  When movement of the nose wheels stops, on the MCDU on the
R  STEERING DATA page: 
R  - Push the line key adjacent to the REFRESH indication. 
R  - Record the servovalve current SSV CURRENT parameter (ISV2). 
R  9_  Do these checks:
R  - Make sure that 0.5 X (ISV1 + ISV2) is less than or equal to 
R  plus or minus 0.50 mA. 
R  - Make sure that (ISV1 - ISV2) is less than or equal to plus 
R  or minus 0.50 mA. 
R  - Make sure that ISV1 or ISV2 is less than or equal to plus or 
R  minus 0.50 mA. 
　
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