27-41-00
SWITCHES ON THE CONTROL STAND ú ú 01 Page 107 ú Sep 28/99
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A
757 MAINTENANCE MANUAL
HORIZONTAL STABILIZER TRIM CONTROL SYSTEM - ADJUSTMENT/TEST
___________________________________________________________
1. General_______
A. This procedure contains these tasks for the operational tests, adjustment, and system tests for the stabilizer-trim control system:
(1)
Horizontal Stabilizer Trim Control System - Operational Test
(2)
Horizontal Stabilizer Trim Control System - Adjustment
(3)
Horizontal Stabilizer Trim Control System - System Test
(4)
Stabilizer Trim Secondary Brake Test
(5)
Stabilizer Trim Shutoff Switches Test
(6)
Stabilizer Trim Override Capability with Split Control Column Commands Test
(7)
Electrical Travel Limits and Stabilizer Trim Cutoff Switch Test
The Operational Test task (1) contains the instructions to do tasks (4), (5), (6), and (7) shown above. Thus, if you do all the steps in the Operational Test task (1), it will not be necessary to do tasks (4), (5), (6), and (7).
C. The System Test task (3) contains the instructions to do task (8) shown above. Thus, if you do all the steps in the System Test task (3), it will not be necessary to do task (8).
D. Tasks (4), (5), (6), (7), and (8) are necessary only for scheduled maintenance.
(1)
Manual/Mechanical Stabilizer Trim Control Test
E.
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; the STAB TRIM levers are in the neutral position when the forward and aft edges of the levers are within the adjustment limit position decal on the control stand.
TASK 27-41-00-715-001
2. Horizontal Stabilizer Trim Control System - Operational Test____________________________________________________________
A. General
(1) The operational test of the stabilizer-trim control system is done without the use of ground support equipment. The test lets you monitor stabilizer-trim control system operation and makes sure the stabilizer has smooth and free mechanical movement.
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27-41-00
ALL ú ú 02 Page 501 ú Jan 28/01
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757
MAINTENANCE MANUAL
ST2B
ST2A
TURNBUCKLE
(EXAMPLE)
FLIGHT COMPARTMENT
SEE A CONTROL WHEEL ST1B CONTROL
STABILIZER TRIM CONTROL STAND SEE B ST1A
SWITCHES WHEEL PANEL, P10
SEEB SEEC
FLIGHT COMPARTMENT
CONTROL WHEEL (EXAMPLE)
A
B
WHITE BAND ON STAB TRIM DECAL
MANUAL LEVERS STAB-TRIM
TS T R B M IA
NORM CUT OUT STAB TRIM C R
CAPTAIN'S STABILIZER POSITION-INDICATOR STABILIZER HYDRAULIC-CUTOUT-SWITCHES POSITION-INDICATOR FIRST OFFICER'S STABILIZER-
CONTROL STAND PANEL, P10 C
Horizontal Stabilizer Trim Control Figure 501 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH STAB TRIM LEVERS ú
27-41-00
ON THE CONTROL STAND ú ú 02 Page 502 ú Sep 28/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
FLIGHT COMPARTMENT SEE A
CONTROL
STABILIZER
WHEEL
TRIM CONTROL SEE B
SWITCHES CONTROL STAND WHEEL PANEL, P10
SEEB SEEC
FLIGHT COMPARTMENT CONTROL WHEEL (EXAMPLE)
A B
ALTERNATE STAB TRIM SWITCHES
APL NOSE DN
APL NOSE UP
ALTN STAB TRIM
NORM
CUT OUT
CR STAB TRIM
CAPTAIN'S STABILIZER FIRST OFFICER'S STABILIZER-STABILIZER HYDRAULIC-POSITION-INDICATOR POSITION-INDICATORCUTOUT-SWITCHES
CONTROL STAND PANEL, P10
C
Horizontal Stabilizer Trim Control
Figure 501 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH ALTERNATE STAB TRIM ú 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 4(4)
