S 866-186
(12)
Turn the control wheel counterclockwise 60 to 70 degrees.
S 976-187
(13)
Let the flow become stable for one minute and write this flow as
flow No. 9. Flow No. 9__________GPM
S 866-188
(14)
Put the control wheel in the neutral position.
S 976-189
(15)
Subtract flow No. 9 from flow No. 7 and write this flow as flow
No. 9A. Flow No. 7__________GPM Flow No. 9__________GPM
Flow No. 9A__________GPM
NOTE: Flow No. 9A is the null leakage of the power packages for
____ the left inboard aileron and the right outboard aileron.
S 976-190
(16) Subtract flow No. 8A from flow No. 9A and write this flow as flow
No. 9B. Flow No. 9A__________GPM Flow No. 8A__________GPM Flow No. 9B__________GPM
NOTE: Flow No. 9B is the null leakage of the power package for the
____ right outboard aileron.
NOTE: If flow No. 9A is approximately equal to flow No. 6A, it is
____ not necessary to continue the lateral hydraulic control system - internal leakage check.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-11-00
ALL ú ú 01 Page 654 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 866-192
(17)
Turn the control wheel clockwise 30 to 40 degrees.
S 976-193
(18)
Let the flow become stable for one minute and write this flow as
flow No. 10. Flow No. 10__________GPM
S 866-194
(19)
Put the speedbrake lever in the full aft position.
S 866-446
(20)
Turn the control wheel to a position 30 to 40 degrees counterclockwise of the neutral position.
S 976-195
(21)
Let the flow become stable for one minute and write this flow as
flow No. 11. Flow No. 11__________GPM
S 976-196
(22) Subtract flow No. 11 from flow No. 10 and write this flow as flow No. 11A.
Flow No. 10__________GPM
Flow No. 11__________GPM
Flow No. 11A__________GPM
NOTE:____ Flow No. 11A is the internal leakage for other than the
null leakage of the control valves in spoiler packages 1 and
4.
S 866-197
(23)
Turn the control wheel 30 to 40 degrees clockwise.
S 976-198
(24)
Let the flow become stable for one minute and write this flow as
flow No. 12. Flow No. 12__________GPM
S 866-199
(25)
Put the control wheel in the neutral position.
S 866-447
(26)
Put the speedbrake lever in the full foward position.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-11-00
ALL ú ú 01 Page 655 ú Feb 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 976-200
(27) Subtract flow No. 12 from flow No. 7 and write this flow as flow No. 12A.
Flow No. 7__________GPM
Flow No. 12__________GPM
Flow No. 12A__________GPM
NOTE:____ Flow No. 12 is the internal leakage other than the null
leakage of the control valves in spoiler packages 9 and 12.
S 866-201
(28)
Turn the control wheel 75 to 78 degrees clockwise.
S 976-202
(29)
Let the flow become stable for one minute and write this flow as
flow No. 13. Flow No. 13__________GPM
S 866-203
(30)
Turn the control wheel fully clockwise.
S 976-204
(31)
Let the flow become stable for one minute and write this flow as
flow No. 14. Flow No. 14__________GPM
S 866-205
(32)
Put the control wheel in the neutral position.
S 976-206
(33)
Subtract flow No. 14 from flow No. 13 and write this flow as flow
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