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* Extend (deploy) pressure port
* Retract (stow) pressure port
* Gimbal assembly
* Sync shaft and tubing connections.
The locking actuators also have these components:
* Manual unlock lever
* Position feedback mechanism
* Internal lock mechanism.
Hydraulic pressure at the extend port unlocks the locking
actuator during normal T/R operation. You can use the manual
unlock lever to unlock the actuator for a manual translation of a
sleeve.
Pressure Ports
The T/R control valve controls the hydraulic power to the
actuators. Hydraulic fluid goes to the extend and retract
pressure ports of each actuator during a deploy operation.
Hydraulic power unlocks the locking actuator so it can operate.
All actuators extend and move the translating sleeve aft.
THRUST REVERSER - HYDRAULIC ACTUATORS - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
78-31-00-019
The T/R control valve sends hydraulic fluid to the retract
pressure ports of each actuator during a stow operation. With
hydraulic pressure at these ports, the actuators retract and
move the translating sleeve forward. The hydraulic fluid at the
extend port returns through the hydraulic control valve module
to the hydraulic reservoir.
Gimbal Assembly
A gimbal assembly attaches the head end of each hydraulic
actuator to the aft side of the torque box. You must move the
translating sleeves aft to get access to the gimbal assembly.
Sync Shaft and Tubing Connections
The sync shafts connect the drive mechanisms of the actuators
together. The shafts are inside of the deploy hydraulic tubing
which connects to the extend pressure port. The sync shaft
connection is at the pressure port.
Training Information Point
All non-locking type actuators are interchangeable. All locking
type actuators are interchangeable.
CAUTION: DO NOT PERMIT THE ACTUATOR ROD END TO
TURN OR BE TURNED WHEN YOU HANDLE THE
ACTUATOR. DAMAGE TO THE INTERNAL
FEEDBACK MECHANISM CAN OCCUR.
THRUST REVERSER - HYDRAULIC ACTUATORS - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
78-31-00-019
THRUST REVERSER - HYDRAULIC ACTUATORS - FUNCTIONAL DESCRIPTION
THRUST REVERSER - HYDRAULIC ACTUATORS - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
78-31-00-019
Purpose
The cascades control the direction of the fan air exhaust during
a T/R deploy operation. This helps create reverse thrust. The
cascades also give structural strength to the T/R.
General
Each T/R has 12 cascades. Numbers identify the cascade
locations. T/R 1 cascade numbers increase clockwise when
looking forward. T/R 2 cascade numbers increase counter
clockwise when looking forward.
Location
Bolts attach the cascades to the torque box on the forward edge
and to the cascade support ring on the aft edge.
You deploy the T/R to get access to the cascades.
Physical Description
The cascades are graphite epoxy.
There are 22 different cascade (part numbers) for each
airplane. Each type causes the fan air exhaust airflow to go
out in a different direction. Cascades 2 and 3 are partially
blocked on each T/Rs. These cascades do not let air go through
a portion of their vanes.
Training Information Point
The T/R sleeves must be in the deploy position to inspect,
remove or install the cascades.
WARNING: DO THE DEACTIVATION PROCEDURE TO
PREVENT THE OPERATION OF THE THRUST
REVERSER. THE ACCIDENTAL OPERATION OF
THE THRUST REVERSER CAN CAUSE INJURIES
TO PERSONS AND DAMAGE TO EQUIPMENT.
THRUST REVERSER - CASCADE SEGMENTS
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
78-31-00-005
THRUST REVERSER - CASCADE SEGMENTS
THRUST REVERSER - CASCADE SEGMENTS
EFFECTIVITY
GUN ALL 78-31-00
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
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