27-41-00
ALL ú ú 03 Page 16 ú Sep 20/90
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A
757
MAINTENANCE MANUAL
STABILIZER TRIM
CONTROL WHEEL
SWITCHES
(EXAMPLE) STABILIZER
TRIM CONTROL
MODULES (EXAMPLE)
FLIGHT COMPARTMENT
SECONDARYSECONDARY BRAKE (EXAMPLE)BRAKE
STABILIZER TRIM
STABILIZER TRIMCONTROL CIRCUIT
AND ELEVATOR/ BALLSCREW ACTUATOR
STCM (L)ASYMMETRY MODULE ARM CIRCUIT
DRIVE
(L)
HYDRAULIC
MOTOR
CAPTAIN'S OR
BALLSCREW
FIRST OFFICER'S
ACTUATOR
STABILIZER TRIM
CONTROL WHEEL
SWITCHES
DRIVECONTROL
HYDRAULIC
MOTOR
CIRCUIT
STABILIZER TRIMSTCM (R)
AND ELEVATOR/ ARM CIRCUIT
ASYMMETRY MODULE
SECONDARY
DRIVE HYDRAULICSTABILIZER
(R)
BRAKE
MOTOR (EXAMPLE)TRIM CUTOFFSWITCHES
LIMIT SWITCH AND POSITIONMAIN EQUIPMENT
TRANSMITTER MODULES (EXAMPLE)CENTER HORIZONTAL
STABILIZER
R LIMIT SWITCHL AND
POSITIONL TRANSMITTERR MODULE (EXAMPLE) MAIN EQUIPMENT CENTER STABILIZER COMPARTMENT
Stabilizer Trim Manual Electric Control Operation
Figure 6 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH STAB TRIM LEVERS ON THE ú
27-41-00
CONTROL STAND ú ú 01 Page 17 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
STABILIZER TRIM
CONTROL WHEEL
SWITCHES
(EXAMPLE)
STABILIZERTRIM CONTROLMODULES (EXAMPLE)
SECONDARYBRAKE(EXAMPLE)
FLIGHT COMPARTMENT
SECONDARY
STABILIZER
BRAKE
BALLSCREW ACTUATOR
STABILIZER TRIMCONTROL CIRCUIT
AND ELEVATOR/
STCM (L)
ASYMMETRY MODULE
ARM CIRCUIT
DRIVE
(L) HYDRAULICMOTOR CAPTAIN'S OR
BALLSCREW
FIRST OFFICER'S
ACTUATOR
STABILIZER TRIM
CONTROL WHEEL
SWITCHES
DRIVECONTROL
HYDRAULIC
LIMIT SWITCH
MOTOR AND POSITION
CIRCUIT
STABILIZER TRIM
STCM (R) TRANSMITTER
AND ELEVATOR/ ARM CIRCUIT
ASYMMETRY MODULE MODULES
SECONDARY
(R)
STABILIZER
BRAKE TRIM CUTOFFSWITCHES DRIVE HYDRAULICMAIN EQUIPMENTMOTOR (EXAMPLE)
CENTER LIMIT SWITCHAND POSITIONTRANSMITTERMODULE
HORIZONTALSTABILIZER
R LIMIT SWITCHL AND
POSITIONL TRANSMITTERR MODULE (EXAMPLE) MAIN EQUIPMENT CENTER STABILIZER COMPARTMENT
Stabilizer Trim Manual Electric Control Operation
Figure 6 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH ALTERNATE STAB TRIM ú
27-41-00
SWITCHES ON THE CONTROL STAND ú ú 01 Page 18 ú Jan 28/02
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757
MAINTENANCE MANUAL
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH STAB TRIM LEVERS ON THE ú
27-41-00
CONTROL STAND ú ú 01 Page 19 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757
MAINTENANCE MANUAL
STAB TRIM
ARM LEVER
(SH 1) (SH 1)
ELEV FEEL
CENTER HYD. SYSTEM INPUT ROD
COMPUTER "ARM"F E "ARM"APL NOSE
APL NOSE
PRESSURE
DN SOL BALLSCREW
UP SOL
RETURNELEV. FEEL PRESSUP ACTUATOR FWD
RATE CONTROL VALVE
"ARM"
APL NOSE UP VALVE
(SH 1)
A
LEFT STABAPL NOSE DN
TRIM SHUTOFFVALVE HORIZONTALSTABILIZER
BRAKERETURN SECONDARYSECONDARY
PRESS OPERATEDBRAKEBRAKE
"ARM" VALVE
(PRESSURE(PRESSUREBRAKE
RELEASED) RELEASED) NULL
RELEASE
GEARBOXAPL NOSE UP APL NOSE DN
MANUALPRESS OPERATED
B (SH 1)
BRAKE
BYPASS
PREVENTSPRESSURE SWBRAKE
"CONTROL" VALVE
CCWBACK-DRIVENULL
MOTORPRIMARYCASE BRAKE
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