THRUST REVERSER CONTROL SYSTEM.................................................................. 78-34-01 Description and Operation Thrust Reverser Alternate Hydraulic Pressure Source Thrust Reverser Controls Thrust Reverser Control Cam Thrust Reverser Control Valve Thrust Reverser Push-Pull Cable Thrust Reverser Hydraulic Plumbing Thrust Reverser Isolation Valve
Thrust Reverser Restrictor Valves .............................................................................. 78-34-07
Removal/Installation
Standby System Thrust Reverser Hydraulic Fuses .................................................... 78-34-08
Removal/Installation
Thrust Reverser Control Valve.................................................................................... 78-34-12
Removal/Installation
Thrust Reverser Shuttle Valve .................................................................................... 78-34-22
Removal/Installation
Thrust Reverser Push-Pull Cable ............................................................................... 78-34-32
Removal/Installation
Thrust Reverser Isolation Valve.................................................................................. 78-34-42
Removal/Installation
Nose Gear Air-Ground Switch Assembly...............................................................*[1] 78-34-61
Removal/Installation
Adjustment/Test
Engine Accessory Unit................................................................................................ 78-34-91
Removal/Installation
THRUST REVERSER POSITION INDICATING SYSTEMS.......................................... 78-36-01 Description and Operation Adjustment/Test
Proximity Sensors ....................................................................................................... 78-36-12
Removal/Installation
Approved Repairs
Hydraulic System Pressure Switch ............................................................................. 78-36-41
Removal/Installation
*[1] Airplanes with Nose Gear Air-Ground Switch
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Contents 78 Page 2 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Apr 01/97
THRUST REVERSER SYSTEM - DESCRIPTION AND OPERATION
1. General
A. A thrust reverser system for each engine is used by the pilot to reduce the length of the landing roll. The thrust reverser system consists of the following subsystems: thrust reverser assembly, thrust reverser control system, and thrust reverser position indicating system. The thrust reverser assembly, installed on the aft end of the engine, reverses the direction of engine exhaust gas flow during reverse thrust operation. The thrust reverser control system consists of controls installed at the engine drum-and-shaft assembly on the wing front spar above the engine, hydraulic plumbing, and a push-pull cable running between the controls and the thrust reverser. The control system, operated by a control lever on the throttle controls in the control cab, directs system A hydraulic pressure to the thrust reverser for the selected mode (forward or reverse) of thrust reverser operation. The thrust reverser position indicating system consists of indicator lights in the control cabin, solid state switches mounted in a switching module, and switch sensors installed on the thrust reversers.
B. See 78-32-101 for description of the thrust reverser assembly, 78-34-01 for description of the thrust reverser control system, and 78-36-01 for description of the thrust reverser position indicating system.
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THRUST REVERSER - TROUBLE SHOOTING
1. Thrust Reverser Trouble Shooting Chart
H27578 H27533 H27550 H27567
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