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WARNING: MAKE SURE THAT THE GROUND LOCKS ARE INSTALLED IN ALL OF THE LANDING
GEAR BEFORE YOU PRESSURIZE THE HYDRAULIC SYSTEMS. WITHOUT THE
GROUND LOCKS, THE LANDING GEAR CAN RETRACT AND CAUSE INJURIES TO
PERSONS AND DAMAGE TO EQUIPMENT.
(6) Install the ground lock assemblies in the landing gear. To install them, do this task: Landing
Gear Downlock Pins Installation, TASK 32-00-01-480-801.
SUBTASK 27-62-00-860-004
WARNING: KEEP PERSONS AND EQUIPMENT CLEAR OF THE FLIGHT CONTROL SURFACES.
THESE COMPONENTS CAN MOVE SUDDENLY WHEN YOU SUPPLY HYDRAULIC
POWER. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(7) Pressurize the speed brake hydraulic systems A and B:
(a) Set the ELEC 2, HYD PUMPS A or ELEC 1, HYD PUMPS B switch on the forward overhead
panel to the ON position.
(b) To pressurize the hydraulic system A, set the SPOILER A switch on the forward overhead
panel to the ON position.
(c) To pressurize the hydraulic system B, set the SPOILER B switch on the forward overhead
panel to the ON position.
------------------------- END OF TASK ---------------------------
737-600/700/800/900
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Speed Brake Power Control Switches
Figure 201/27-62-00-990-801
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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TASK 27-62-00-840-801
3. Put the Speed Brake Hydraulic systems A and B Back to the Condition Before the Pressurization
(Figure 201)
A. References
Reference Title
32-00-01-080-801 Landing Gear Downlock Pins Removal (P/B 201)
B. 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
210 Subzone - Control Compartment - Body Station 178.00 to Body
Station 259.50
C. Procedure
SUBTASK 27-62-00-860-005
(1) Set the ELEC 2, HYD PUMPS A and the ELEC 1, HYD PUMPS B switches on the forward
overhead panel to the OFF position.
SUBTASK 27-62-00-860-006
(2) Set the SPOILER A and B switches on the forward overhead panel to the OFF position.
SUBTASK 27-62-00-080-001
(3) Remove the ground lock assemblies from the landing gear. To remove them, do this task:
Landing Gear Downlock Pins Removal, TASK 32-00-01-080-801.
------------------------- END OF TASK ---------------------------
TASK 27-62-00-800-802
4. Remove Pressure from the Speed Brake Hydraulic Systems A and B
(Figure 201, Figure 202)
A. References
Reference Title
29-09-00-860-802 Hydraulic Reservoirs Depressurization (P/B 201)
29-11-01-860-802 Hydraulic Reservoirs Depressurization (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-1675 Assembly - Lock, Flight Controls
(Part #: F80049-18, Supplier: 81205, A/P Effectivity: 737-100, -200,
-200C, -300, -400, -500, -600, -700, -700C, -700ER, -700QC, -800, -900,
-900ER, -BBJ)
(Opt Part #: F80049-12, Supplier: 81205, A/P Effectivity: 737-100, -200,
-200C, -300, -400, -500, -600, -700, -700C, -700ER, -700QC, -800, -900,
-900ER, -BBJ)
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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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
210 Subzone - Control Compartment - Body Station 178.00 to Body
Station 259.50
D. Procedure
SUBTASK 27-62-00-860-007
(1) Set the SPOILER A and B switches on the forward overhead panel to the OFF position.
SUBTASK 27-62-00-860-008
(2) Open this circuit breaker and install safety tag:
F/O Electrical System Panel, P6-2
Row Col Number Name
B 12 C00204 FLIGHT CONTROL SHUTOFF VALVES SPOILER
SUBTASK 27-62-00-860-009
(3) Set the ELEC 2, HYD PUMPS A and the ELEC 1, HYD PUMPS B switches on the forward
overhead panel to the OFF position.
　
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