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27-41-31
ALL ú ú 01 Page 604 ú Nov 15/91
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A
737-300/400/500MAINTENANCE MANUAL
STABILIZER FORWARD CONTROL MECHANISM - REMOVAL/INSTALLATION
___________________________________________________________
1. General_______
A. This procedure has two tasks, one for the removal and one for the installation of the stabilizer forward control mechanism (which is referred to as the forward mechanism). The procedure has these parts:
(1)
The removal of the forward mechanism
(2)
The installation of the replacement forward mechanism.
TASK 27-41-41-004-001
2. Stabilizer Forward Control Mechanism Removal____________________________________________
A. Standard Tools and Equipment
(1)
Tensiometer - 0-200 pounds capacity
(2)
Spring Scale - 0-50 pounds capacity
B.
References
(1)
24-22-00/201, Manual Control
C.
Access
(1)
Location Zone
101 Control Cabin, LH
102 Control Cabin, RH
(2)
Access Panels
1103 Forward Access Door
D.
Procedure
S 864-002
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-021
(2)
Make sure you close these circuit breakers:
(a)
P6-2 Circuit Breaker Panel
1) PRIMARY STAB TRIM ACTUATOR
2) STABILIZER TRIM CONT
(3)
Move the stabilizer to the full APL NOSE UP position.
S 864-023
(4)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6-2 Circuit Breaker Panel 1) STABILIZER TRIM ACTUATOR or PRIMARY STAB TRIM ACTUATOR
(b)
P18-0 Circuit Breaker Panel (Airplanes with Primary Stab Trim Actuator) 1) AUTOPILOT STABILIZER TRIM SERVO
S 864-022
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
STABILIZER TRIM
CONTROL SWITCH
COLUMN
CUTOUT SWITCH CONTROL COLUMN
STABILIZER TRIMSTABILIZER CONTROL SWITCHTRIM WHEEL TRIM
CONTROL
STABILIZER WHEEL
POSITION INDICATOR
JACKSHAFT
ELEVATOR TORQUE TUBE
9. IDLER SPROCKET CRANK
COLUMN
CUTOUT
SWITCH
2. FLEXIBLE SHAFT
1. AFT SUPPORT BOLTS
10. CHAIN ASSEMBLY
SEE B
SEE A
STB CABLE
STA CABLE
12. FORWARD SUPPORT
11. AFT SUPPORT LINK LINK
A1
SEE D SEE E
8. FORWARD 3. CABLE GUARD
A
SUPPORT
BOLT
4.
CABLE DRUM
5.
FORWARD MECHANISM SPROCKET DRIP SHIELD
6.
TURNBUCKLE
MOUNTING SEE F GEAR HOUSING
BOLT 12.50 (NOT INSTALLED INCHES ON ALL AIRPLANES)
7. TURNBUCKLE
1
RIGHT SIDE SHOWN, LEFT SIDE OPPOSITE.
Forward Mechanism and Chain Installation Figure 401 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-41
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
1. AFT SUPPORT BOLT
CHAIN BUSHING WASHER
LINKS
APPLY A 5 POUND SEE C EYEBOLT NUT
PERPENDICULAR FORCE 9. IDLER
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