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NOTE: After installation of a new rudder PCU, complete the system A portion of this check.
SUBTASK 27-21-00-710-107-001
(13) Engage the authority limiter.
NOTE: The command to engage the authority limiter remains active for only 75 seconds.
(a) Push the ON/OFF button on the front panel of the flap/slat electronics unit (FSEU), on E
shelf, to turn on the display.
NOTE: The display will show EXISTING FAULTS?
(b) Select OTHER FUNCTNS? from the MAIN MENU on the FSEU. The display will show SET
OUTPUTS?
(c) Select SET OUTPUTS? from the OTHER FUNCTNS? menu. The display will show RUD
PRES LIMIT?
(d) Select RUD PRES LIMIT? from the SET OUTPUTS? menu. The display will show SET ON?
(e) Select SET ON? from the RUD PRES LIMIT? menu. The display will show CMD ON, SET
OFF?
SUBTASK 27-21-00-710-108-001
(14) Push the left rudder pedal until it touches the forward quadrant stop and hold.
SUBTASK 27-21-00-710-109-001
(15) When the hydraulic flow becomes stable, record the amperage value from the ammeter as
Value # 7: ____________
NOTE: Make sure that the authority limiter is still engaged.
SUBTASK 27-21-00-710-110-001
(16) Put the left rudder pedal to the neutral position.
SUBTASK 27-21-00-710-111-001
(17) Calculate and record the difference in amperage values with this formula:
(a) Value # 7 minus Value # 6 : _______________ (amps)
SUBTASK 27-21-00-710-112-001
(18) Make sure the difference in amperage values is more than 0.5 amps.
SUBTASK 27-21-00-710-113-001
(19) If the difference in amperage values is not more than 0.5 amps, do a trouble-shooting on the
authority limiter.
SUBTASK 27-21-00-710-114-001
(20) Make sure that the command to engage the authority limiter goes out.
NOTE: The command to engage the authority limiter remains active for 75 seconds.
SUBTASK 27-21-00-710-115-001
(21) Put the RUDDER TRAVEL DIRECTION switch on the test box to the RIGHT position.
NOTE: The green indicator light on the test box should go on and the rudder should move to
the right.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN 001-005, 155-157, 201-999 PRE SB 737-27-1253 27-21-00
Config 1
Page 561
Jun 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
SUBTASK 27-21-00-710-116-001
(22) When the hydraulic flow becomes stable, record the amperage value from the ammeter as
Value # 8: ____________
SUBTASK 27-21-00-710-117-001
(23) Push the right rudder pedal until it touches the forward quadrant stop and hold.
SUBTASK 27-21-00-710-118-001
(24) When the hydraulic flow becomes stable, record the amperage value from the ammeter as
Value # 9: ____________
SUBTASK 27-21-00-710-119-001
(25) Put the right rudder pedal in the neutral position.
SUBTASK 27-21-00-710-120-001
(26) Calculate and record the difference in amperage values with this formula:
(a) Value # 9 minus Value # 8: _______________ (amps)
SUBTASK 27-21-00-710-121-001
(27) Make sure the difference in amperage values is between -0.7 amps and 1.5 amps.
SUBTASK 27-21-00-710-122-001
(28) If the difference in amperage values is not in the given range, replace the rudder PCU.
NOTE: After installation of a new rudder PCU, complete the system A portion of this check.
SUBTASK 27-21-00-710-123-001
(29) Engage the authority limiter.
NOTE: The command to engage the authority limiter remains active for only 75 seconds.
(a) Push the ON/OFF button on the front panel of the flap/slat electronics unit (FSEU), on E
shelf, to turn on the display.
NOTE: The display will show EXISTING FAULTS?
(b) Select OTHER FUNCTNS? from the MAIN MENU on the FSEU. The display will show SET
OUTPUTS?
(c) Select SET OUTPUTS? from the OTHER FUNCTNS? menu. The display will show RUD
PRES LIMIT?
(d) Select RUD PRES LIMIT? from the SET OUTPUTS? menu. The display will show SET ON?
(e) Select SET ON? from the RUD PRES LIMIT? menu. The display will show CMD ON, SET
OFF?
SUBTASK 27-21-00-710-124-001
(30) Push the right rudder pedal until it touches the forward quadrant stop and hold.
SUBTASK 27-21-00-710-125-001
(31) When the hydraulic flow becomes stable, record the amperage value from the ammeter as
Value # 10: ____________
NOTE: Make sure that the authority limiter is still engaged.
SUBTASK 27-21-00-710-126-001
(32) Put the right rudder pedal to the neutral position.
SUBTASK 27-21-00-710-127-001
(33) Calculate and record the difference in amperage values with this formula:
(a) Value # 10 minus Value # 9 : _______________ (amps)
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
　
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