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5 Packing 27-51-55-02-115 GUN 001-028, 101-121,
155-157, 201-999
E. Location Zones
Zone Area
133 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Left
134 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Right
F. Procedure
SUBTASK 27-51-00-480-007
WARNING: MAKE SURE THE DOWNLOCK PINS ARE INSTALLED ON ALL THE LANDING GEAR.
WITHOUT THE DOWNLOCK PINS, THE LANDING GEAR CAN RETRACT AND CAUSE
INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) If the downlock pins are not installed in the nose and main landing gear, do this task: Landing
Gear Downlock Pins Installation, TASK 32-00-01-480-801.
SUBTASK 27-51-00-040-002
WARNING: DO THE TRAILING EDGE FLAP DEACTIVATION PROCEDURE BEFORE YOU DO WORK
ON THE FLAP SYSTEM. WITH THE FLAPS ACTIVATED, THE FLAPS CAN MOVE AND
CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2) Do this task: Trailing Edge Flap System Deactivation, TASK 27-51-00-040-801.
SUBTASK 27-51-00-010-001
(3) Remove the cover [4] from the flap power drive unit [1]:
(a) Remove the bolts [3] and washers [2] that attach the cover [4] to the flap power drive unit
[1].
(b) Remove the cover [4] from the power drive unit [1]
SUBTASK 27-51-00-980-001
WARNING: MOVE ALL PERSONS AND EQUIPMENT AWAY FROM THE FLAPS. THE FLAPS WILL
MOVE AND CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
CAUTION: DO NOT TURN THE MANUAL DRIVE WITH MORE THAN 350 POUND-INCHES (39.5
NEWTON-METERS) TORQUE OR FASTER THAN 1000 RPM. YOU CAN CAUSE
DAMAGE TO THE POSITION SENSOR GEARBOX AND THE TORQUE TUBES.
(4) Use a 3/8 inch square drive to turn the manual drive on the PDU to extend or retract the trailing
edge flaps to the applicable position.
NOTE: Refer to the cover [4] for the correct direction to turn the manual drive. Look at the
number 4 or 5 ballscrew to find the position of the flaps.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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D633A101-GUN
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G. Put the Airplane Back to Its Usual Condition
SUBTASK 27-51-00-980-002
WARNING: MAKE SURE THE POSITION OF THE FLAPS AGREE WITH THE POSITION OF THE FLAP
CONTROL LEVER. WHEN YOU SUPPLY HYDRAULIC POWER THE FLAPS WILL MOVE
AUTOMATICALLY TO THE POSITION OF THE FLAP CONTROL LEVER. THIS CAN
CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Turn the manual drive until the flaps are in a position which agrees with the flap control lever.
SUBTASK 27-51-00-410-001
(2) Install the cover [4] on the flap power drive unit [1]:
(a) Apply fluid, D00467 to the packing [5] on the cover [4].
(b) Apply a thin layer of compound, C00913 to the mating surface of the cover [4] and the flap
power drive unit [1].
(c) Put the cover [4] in its position on the flap power drive unit [1].
(d) Apply compound, C00913 to the shank and threads of the bolts [3].
(e) Install the bolts [3] and washers [2] to attach the cover [4].
SUBTASK 27-51-00-440-002
(3) Do this task: Trailing Edge Flap System Reactivation, TASK 27-51-00-440-801.
------------------------- END OF TASK ---------------------------
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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Trailing Edge Flap Manual Operation
Figure 203 (Sheet 1 of 2)/27-51-00-990-803
737-600/700/800/900
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EFFECTIVITY
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Trailing Edge Flap Manual Operation
Figure 203 (Sheet 2 of 2)/27-51-00-990-803
737-600/700/800/900
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EFFECTIVITY
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TASK 27-51-00-860-803
7. Extend the Trailing Edge Flaps
A. Location Zones
Zone Area
133 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Left
134 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Right
211 Flight Compartment - Left
212 Flight Compartment - Right
B. Procedure
SUBTASK 27-51-00-860-016
(1) Do one of these tasks to extend the trailing edge flaps:
(a) To extend the flaps with hydraulic power, do this task: Trailing Edge Flap System
Operation With Primary Control, TASK 27-51-00-860-801.
(b) To extend the flaps with electrical power in alternate mode, do this task: Trailing Edge
　
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