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DEICING FLUID THAT CONTAIN POTASSIUM FORMATE IS USED. ALSO DO THE
STEPS FOR ALL AIRPLANES THAT YOU FOUND CORROSION IN THE
ELECTRICAL CONNECTORS IN THE MAIN WHEEL WELL. THE ELECTRICAL
CONNECTOR IS PART OF A SYSTEM THAT IS NECESSARY FOR SAFE FLIGHT.
(a) If there was corrosion, refer to (SWPM 20-60-03) to correct the problem.
(b) Apply the D5026NS or ZC-026 compound, G50171 to the connector (SWPM 20-60-03).
SUBTASK 27-58-01-420-002
(4) Connect the electrical connector [1] to the flap position transmitter [2].
SUBTASK 27-58-01-860-004
(5) For the left flap position transmitter [2], T427;
Remove the safety tags and close these circuit breakers:
CAPT Electrical System Panel, P18-1
Row Col Number Name
C 5 C01041 AFCS SYS A SNSR EXC AC
F/O Electrical System Panel, P6-1
Row Col Number Name
B 4 C01207 SMYD-2 SNSR EXC AC
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
F/O Electrical System Panel, P6-2
Row Col Number Name
A 12 C00213 FC TE FLAP POS/SKEW SNSR & IND LEFT
SUBTASK 27-58-01-860-005
(6) For the right flap position transmitter [2], T428;
Remove the safety tags and close these circuit breakers:
CAPT Electrical System Panel, P18-2
Row Col Number Name
E 6 C01205 SMYD-1 SNSR EXC AC
F/O Electrical System Panel, P6-2
Row Col Number Name
A 11 C01443 FC TE FLAP POS/SKEW SNSR & IND RIGHT
C 2 C01042 AFCS SYS B SNSR EXC AC
SUBTASK 27-58-01-440-001
(7) Do this task: Trailing Edge Flap System Reactivation, TASK 27-51-00-440-801.
E. Flap Position Transmitter Test
SUBTASK 27-58-01-860-006
(1) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-58-01-860-007
WARNING: KEEP PERSONS AND EQUIPMENT CLEAR OF THE FLIGHT CONTROL SURFACES, THE
THRUST REVERSERS, AND THE LANDING GEAR. THESE COMPONENTS CAN MOVE
SUDDENLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURIES TO
PERSONS AND DAMAGE TO EQUIPMENT.
(2) Supply system B hydraulic power, do this task: Hydraulic System A or B Pressurization,
TASK 29-11-00-860-801.
SUBTASK 27-58-01-860-008
(3) Move the flap control lever to the UP position to retract the trailing edge flaps.
(a) Wait for the trailing edge flaps to move to the retracted position.
SUBTASK 27-58-01-210-002
(4) Make sure the pointers on the flap position indicator are in the UP white band.
SUBTASK 27-58-01-710-001
(5) Do this task: Trailing Edge Flap System Operational Test, TASK 27-51-00-710-801.
F. Put the Airplane Back to Its Usual Condition
SUBTASK 27-58-01-860-009
(1) Remove system B hydraulic power, do this task: Hydraulic System A or B Power Removal,
TASK 29-11-00-860-805.
------------------------- END OF TASK ---------------------------
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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FLAP POSITION TRANSMITTER - ADJUSTMENT/TEST
1. General
A. This procedure has a task to adjust the trailing edge flap position transmitters.
B. The flap position transmitters are installed on the outboard end of transmissions No. 1 and 8.
C. The flap position transmitters include additional syncros that are used in the autopilot and the stall
management systems.
TASK 27-58-01-820-801
2. Flap Position Transmitter Adjustment
(Figure 501)
A. General
(1) This task uses the Flap/Slat Electronics Unit (FSEU) to adjust the flap position transmitters.
(2) This task should only be used in the situation where the adjustment of a flap position transmitter
has been changed during the installation process.
(a) This adjustment is not as accurate as the installation process of a new flap position
transmitter due to these reasons:
1) The reliance on the ability of the trailing edge flap drive system to accurately drive the
flaps to the 15-unit position.
2) The reliance on the tolerances of the particular flap position transmitter at the 15-unit
position.
3) The reliance on the ability of the FSEU to read the flap position transmitter at the 15-unit
position.
(b) The flap position transmitter is capable of being used on the left and right wings. Because
of this, it is necessary to be careful not to set the position transmitter at the incorrect 15-unit
position. If the flap position transmitter is set at the incorrect position for the wing it is on, it
will appear to operate backward.
B. References
Reference Title
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
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737-600-700-800-900 飞机维护手册5 AIRCRAFT MAINTENANCE MANUA(121)
