(a)
P6-2 Panel
1) SHUTOFF VALVES - SPOILER
S 862-006
(4) Set the parking brake.
S 492-027
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.
(5) Install the landing gear ground lock assembly in the nose gear (AMM 32-00-01/201).
S 862-028
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.
(6)
Set the ELEC 2, HYD PUMPS A or the ELEC 1, HYD PUMP B switches on the forward overhead panel to the ON position (Fig. 201).
S 862-029
(7)
Set the FLT CONTROL SPOILER A and B switches on the forward overhead panel to the ON position.
NOTE: To supply pressure to the hydraulic system A or B separately,
____
set the applicable SPOILER A or B switch.
D. Put the Airplane Back to Its Usual Condition
S 862-010
(1)
Set the ELEC 2, HYD PUMPS A or the ELEC 1, HYD PUMPS B switches on the forward overhead panel to the OFF position.
S 862-011
(2)
Remove the electrical power if it is not necessary
(AMM 24-22-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
Speed Brake Power Control Switches
Figure 201
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
S 092-012
(3) Remove the ground lock assembly from the nose gear
(AMM 32-00-01/201).
TASK 27-62-00-862-013
3. Speed Brake Systems A and B Depressurization
____________________________________________
A. Special Tools and Equipment
(1)
Flight Control Lock Assembly - F80049 (2 Necessary)
B.
References
(1)
AMM 29-09-00/201, Hydraulic Reservoir Pressurization System
C.
Access
(1)
Location Zones
101, 102 Control Cabin
216, 217 Main Wheel Well
D.
Remove the Pressure from the Speed Brake Hydraulic Systems A and B
S 862-014
(1)
Set the FLT CONTROL SPOILER A and B switches on the forward overhead panel to the OFF position (Fig. 201).
S 862-015
(2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6-2 Panel
1) SHUTOFF VALVES - SPOILER
S 862-016
(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.
S 862-017
(4)
Move the rudder pedals to release the pressure in the hydraulic system.
S 862-018
(5)
If you will remove one or more hydraulic connections, make sure you release the pressure from the reservoirs for hydraulic systems A and B (AMM 29-09-00/201).
S 492-024
(6)
Install the flight control lock assemblies (Fig. 202).
(a)
Disconnect the electrical connectors from the spoiler control shutoff valve at the system A flight controls hydraulic module in the left wheel well.
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