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WARNING: DO THE STEPS BELOW IF THE AIRPLANE OPERATES AT AIRPORTS WHERE
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 27-51-53-420-003
(5) Connect the electrical connector [5] to the motor assembly [2].
(6) Service the motor assembly [2](Trailing Edge Flap Electric Motor Servicing,
TASK 12-22-51-610-805).
F. Flap Electric Motor Installation Test
SUBTASK 27-51-53-860-004
(1) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-51-53-860-005
(2) Remove the safety tag and close this circuit breaker:
F/O Electrical System Panel, P6-2
Row Col Number Name
D 13 C00841 FLIGHT CONTROL ALTN T.E. FLAP DRIVE
SUBTASK 27-51-53-710-001
(3) Use the alternate system to extend and retract the flaps, do this task: Trailing Edge Flap System
Operation With Alternate Control, TASK 27-51-00-860-802.
------------------------- END OF TASK ---------------------------
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BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
TEE ANGLE GEARBOX - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of the tee angle gearbox
(2) An installation of the tee angle gearbox.
B. The tee angle gearbox is installed on the bulkhead aft of the inboard transmissions for the inboard
flap.
TASK 27-51-55-000-801
2. Tee Angle Gearbox Removal
(Figure 401)
A. References
Reference Title
27-51-00-040-801 Trailing Edge Flap System Deactivation (P/B 201)
32-00-01-480-801 Landing Gear Downlock Pins Installation (P/B 201)
B. Tools/Equipment
NOTE: When more than one tool part number is listed under the same "Reference" number, the
tools shown are alternates to each other within the same airplane series. Tool part numbers
that are replaced or non-procurable are preceded by "Opt:", which stands for Optional.
Reference Description
SPL-1726 Clamp Set - Trailing Edge Flap Torque Tube
(Part #: C27022-1, Supplier: 81205, A/P Effectivity: 737-600, -700,
-700C, -700ER, -700QC, -800, -900, -900ER, -BBJ)
C. 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
D. Prepare for the Removal
SUBTASK 27-51-55-480-001
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 27-51-55-040-001
(2) Do this task: Trailing Edge Flap System Deactivation, TASK 27-51-00-040-801.
E. Tee Angle Gearbox Removal
SUBTASK 27-51-55-020-001
(1) Disconnect the torque tubes [13] from the tee angle gearbox assembly [1]:
(a) Install a clamp set, SPL-1726 on the torque tube [13] outboard of the tee angle gearbox
assembly [1].
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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(b) Remove the screws [3] that attach the coupling sleeves [2] to the splined couplings [14].
(c) Move the coupling sleeves [2] off the splined couplings [14].
SUBTASK 27-51-55-020-002
(2) Remove the u joint assembly [8]:
(a) Remove the nuts [12], washers [11] and bolts [10] that attach the u joint assembly [8] to the
transmission [9] and the tee angle gearbox assembly [1].
(b) Remove the u joint assembly [8].
GUN 001-099, 101-110, 115, 116, 118, 156, 157, 203-999
(c) Remove the wire bundle from the bracket on the tee angle gearbox assy [1].
GUN ALL
SUBTASK 27-51-55-020-003
(3) Remove the tee angle gearbox assembly [1]:
(a) Remove the nuts [7], washers [6], washers [5] and bolts [4] that attach the tee angle
gearbox assembly [1] to the structure.
(b) Remove the tee angle gearbox assembly [1].
------------------------- END OF TASK ---------------------------
737-600/700/800/900
　
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