(6)
Install the solenoid valve.
(7)
Install the bolts that attach the solenoid valve to the main rudder PCU.
(8)
Tighten the bolts to 50-70 pound-inches (5.6-7.9 newton-meters).
C. Remove the DO-NOT-CLOSE tags and close the YAW DAMPER circuit breakers on the P6 panel.
8. Restore Airplane to Normal Configuration
A. Remove rudder systems A, B, and Standby hydraulic power (AMM 27-21-0/201).
B. Remove the lockout pin on the nose gear steering (AMM 32-00-01/201).
C. Install the access panels that you removed.
D. Check hydraulic reservoirs and service, if required (Ref Chapter 12, Hydraulic Servicing).
500
27-21-92 Page 408 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 01/03
W28329
500 Main Rudder PCU Load Limiter Solenoid Valve Installation
May 01/03 Figure 402 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-21-92 Page 409
RUDDER PRESSURE REDUCER - REMOVAL/INSTALLATION
EFFECTIVITY
Airplanes incorporating SB 27A1206
1. General
A. The Rudder Pressure Reducer is located in the upper left section of the tail compartment (STA 1104) (Fig. 401).
2. Equipment and Materials
A. Fire Resistant Hydraulic Fluid -BMS 3-11 (G00062)
B. Skydrol Assembly Lube - MCS 352 (D00054)
3. Prepare for Removal
A. Remove rudder systems A, B and Standby hydraulic power (Ref 27-21-0, MP).
B. Release pressure from the hydraulic reservoirs (Ref 29-09-300, MP).
C. Open these circuit breakers on P6:
(1)
STABILIZER TRIM ACTUATOR
(2)
STABILIZER TRIM CONT
D. Open these circuit breakers on P18:
(1)
Yaw Damper AC
(2)
Yaw Damper DC
E. Remove access panel 3701.
F. Close No. 5 manual shutoff valve.
4. Remove Rudder Pressure Reducer
A. Disconnect the hydraulic lines from the rudder pressure reducer.
B. Disconnect the electrical connectors.
C. Remove the rudder pressure reducer from the mounting bracket.
5. Install Rudder Pressure Reducer
A. Install the rudder pressure reducer to the mounting bracket.
B. Connect the electrical connectors to the rudder pressure reducer.
C. Connect the hydraulic lines to the rudder pressure reducer.
D. Open No. 5 manual shutoff valve.
E. Perform the following steps to ensure rudder pressure reducer is serviceable:
(1)
Pressurize the hydraulic reservoirs (Ref 29-09-300, MP).
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. THE AILERONS , RUDDERS, ELEVATORS, FLAPS, SLATS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2)
Supply pressure to rudder systems A, B, and Standby hydraulic power (Ref 27-21-0, MP).
(3)
Move the rudder pedals through their full travel three times and make sure the rudder moves correctly.
(4)
Make sure the rudder pressure reducer hydraulic connections do not leak.
(5)
Close these circuit breakers on P18:
(a)
Yaw Damper AC
(b)
Yaw Damper DC
F. Perform the Pressure Reducer Test (AMM 22-12-01/401).
May 01/03 27-21-96 Page 401
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
K15116
Rudder Pressure Reducer 500
27-21-96 Page 402 Figure 401 (Sheet 1) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 01/99
6. Restore Airplane to Normal Configuration
A. Replace access panel 3701.
B. Close circuit breakers on P6.
(1)
STABILIZER TRIM ACTUATOR
(2)
STABILIZER TRIM CONT
C. Fill the hydraulic reservoirs if it is necessary (Ref 29-09-300, MP).
500
May 01/99 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-21-96 Page 403
RUDDER TRIM ACTUATOR - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Rigging Pins Kit - F70207-3, -52, -61, or -84:
REF NO. F70207-( ) DIAMETER (INCHES) LENGTH (INCHES) FUNCTION
R-5 -11 0.309-0.311 6.7 +0.25 Feel and Centering Mechanism
B. Corrosion Preventive Compound - MIL-C-11796, class 3 (Ref 20-30-21) 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：737 AMM 飛機維護手冊 飛行操縱 FLIGHT CONTROLS 2(41)
