(3)
When the above conditions have been met, the arm valve solenoid will be energized. The arm valve pressurizes one side of the isolation valve which opens to pressurize the thrust reverser system.
(4)
With the reverse thrust levers raised, the stow valve solenoid in the control valve module hydraulically repositions the directional control valve to direct hydraulic pressure to extend the hydraulic actuators and deploy the thrust reverser.
(a) The auto restow proximity sensor will be out of proximity when the sleeves translate aft. The auto restow proximity sensor energizes the arm valve solenoid to open the isolation valve when the sensor is out of target proximity range.
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78-34-00
ú ALL ú
ú ú ú C03.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 5Jul 12/02
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH THE CONTROL VALVE ú
78-34-00
MODULES WITHOUT FLOW RESTRICTORS ú ú C01 Page 6 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
RH COWLACTUATORS
LOCK
LOCK
TO M528 ENGINE
STOW
ACCESSORY UNIT
CONTROL RELAY
CONTROL
VALVE
THRUSTREVERSERRETURN
MANUAL
TO T/R CONTROL SWITCH
DEPLOY
LINE
LH COWLTO AIR SENSING RELAY
SHUTOFF
TEE ACTUATORS
VALVE
ISOLATIONTO T/R CONTROL SWITCH
VALVE
ARM
TO T/R ARM SWITCH
HYD
SYS A
STBY
1 SYSTEMHYDRAULICS
3(29-15-00/001) 2
THRUST REVERSER PRESSURELINE RESTRICTOR TEE
HYD SYS A THRUST REVERSER CONTROL VALVE MODULE(LEFT AIR CONDITIONING BAY)
180 CUBIC INCH HYDRAULIC FUSE LOCATED IN THE AIR CONDITIONING BAY.
2
175 CUBIC INCH HYDRAULIC FUSE LOCATED ON THE FORWARD BULKHEAD OF THE MAIN LANDING GEAR WHEEL WELL.
3 175 CUBIC INCH HYDRAULIC FUSE LOCATED IN THE MAIN LANDING GEAR BAY ON THE KEEL BEAM.
Thrust Reverser Control Hydraulic Schematic
Figure 1 (Sheet 1)
A57937
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
STBYSYSTEM HYDRAULICS(29-15-00/001)
HYD SYS A
(LEFT AIR CONDITIONING BAY)
80 CUBIC INCH HYDRAULIC FUSE LOCATED IN THE AIR CONDITIONING BAY.
175 CUBIC INCH HYDRAULIC FUSE LOCATED ON THE FORWARD BULKHEAD OF THE MAIN LANDING GEAR WHEEL WELL.
175 CUBIC INCH HYDRAULIC FUSE LOCATED IN THE MAIN LANDING GEAR BAY ON THE KEEL BEAM.
THE RESTRICTORS HAVE BEEN MOVED TO THE CONTROL VALVE MODULE AND THE UPPER ACTUATORS.
Thrust Reverser Control Hydraulic Schematic
Figure 1 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH THE CONTROL VALVE ú
78-34-00
MODULES WITH FLOW RESTRICTORS ú ú C01 Page 7 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A58002
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
LANDING GEARLOGIC SHELF
1 AIRPLANES WITHOUT THRUST
2 AIRPLANES WITH THRUSTREVERSER SYNC LOCKS REVERSER SYNC LOCKS
Thrust Reverser Control Electrical SchematicFigure 2 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT ú
78-34-00
ENGINE ACCESSORY UNITS ú ú C01 Page 8 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
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