757
FAULT ISOLATION/MAINT MANUAL
LATERAL CONTROL
OVERRIDE MECHANISM
SEE F
BODY CABLE BODY
A1A BODY CABLE WING CABLE A1B ROD CONTROL A2A CABLE BODY A2B CABLE
A1A WING
CABLE
A2B
LATERAL CONTROL
FEEL, CENTERING,
AND TRIM MECHANISM
SEE E
WING
CABLE
A1B WING CABLE OF THE CENTER ALCS) CENTER ALCS (THE LEFT ALCS IS FORWARD ALCS RIGHT A2A
LATERAL CONTROL MECHANISMS
D FROM SHT 1
LATERAL
TRIM
ACTUATOR,
M488
FEEL
SPRINGS OVERRIDE
SPRING
TO THE ALCS CONTROL ROD INBD FWD
FWD INBD TO THE ALCS CONTROL ROD
E LATERAL CONTROL FEEL, CENTERING, AND TRIM MECHANISM F OVERRIDE MECHANISM LATERAL CONTROL
Aileron and Aileron Trim Control - Component Location
Figure 102 (Sheet 2)
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ALL ú ú 04 Page 103 ú Jun 20/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 FAULT ISOLATION/MAINT MANUAL
AILERON QUADRANT AND OVERRIDE MECHANISM LEFT AILERON PCAS
SEE GAILERON QUADRANT AND SEE H OVERRIDE MECHANISM
SEE G LEFT AILERON
AILERON ROD PCA INPUTEND FAIRING LEVER HYDRAULIC RETURN LINERIGHT AILERON
RIGHT AILERON PCA INPUT ROD PCAS
SEE H PCA FILTER
HYDRAULIC PRESSURE LINE
PCA
TO THE OUTBOARD TO THE
PCA AILERON
QUADRANT
AND
OVERRIDE
MECHANISM
TRUNNION
SPRING OVERRIDE SUPPORT LEFT OR RIGHT AILERON PCA INBD
(LEFT INBOARD PCA IS SHOWN)
FWD
H
AILERON
QUADRANT
OUTBD FWD
AILERON QUADRANT AND OVERRIDE MECHANISM (LEFT SIDE SHOWN, RIGHT SIDE IS OPPOSITE) G
Aileron and Aileron Trim Control - Component Location Figure 102 (Sheet 3)
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ALL ú ú 01 Page 104 ú Jun 20/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
AILERON AND AILERON TRIM CONTROL SYSTEM - ADJUSTMENT/TEST
_________________________________________________________
1. General_______
A. This procedure contains these tasks:
-Operational Test - Aileron and Aileron Trim Control
-Adjustment - Aileron and Aileron Trim Control
-System Test - Aileron and Aileron Trim Control
-Aileron Bus Force Limiter and the Aileron Control Override Mechanism - Test (for Scheduled Maintenance Only)
-Single Hydraulic System Aileron Control - Test (for Scheduled Maintenance Only)
TASK 27-11-00-715-001
2. Operational Test - Aileron and Aileron Trim-Control System__________________________________________________________
A. General
(1)
This procedure is used to make sure that the ailerons and the aileron-trim-control system operate correctly. Special equipment is not necessary.
B.
References
(1)
24-22-00/201, Electrical Power - Control
(2)
29-11-00/201, Pressurize/Depressurize Main Hydraulic Systems
C.
Access
(1)
Location Zones
568 Aileron (Left)
668 Aileron (Right)
211/212 Control Cabin
D.
Prepare for the Test
(1)
Supply electrical power (Ref. 24-22-00).
S 865-003
(2)
Make sure these circuit breakers on the overhead panel, P11, are closed:
(a)
EICAS (6 locations)
S 865-002
S 825-004
(3) Push the STATUS button on the display select panel, P9, to show the control-surface position-indicator on the bottom EICAS display.
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