STANDBY RUDDER 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. Fire Resistant Hydraulic Fluid - BMS 3-11 (Ref 20-30-21)
2. Prepare for Removal
A. Remove rudder systems A, B, and standby hydraulic power (Ref 27-21-0 MP).
B. Remove access panels on left side of vertical stabilizer as shown in Fig. 401.
C. Install rigging pin R-5 in rudder feel and centering unit (Ref 27-21-0 A/T for location.)
3. Remove Standby Rudder Actuator
A. Disconnect hydraulic lines from standby rudder actuator (Fig. 401).
B. Cap hydraulic lines and ports to prevent contamination.
C. Disconnect input rod at aft attachment point by removing nut, washer, and bolt.
D. Disconnect forward end of actuator from structure by removing cotter pin, nut, washers, and bolt.
E. Disconnect aft end of actuator from structure by removing cotter pin, nut, washers and bolts.
F. Disengage actuator from structure attachment points, and remove from airplane.
4. Prepare for Installation
A. Remove rudder systems A, B, and standby hydraulic power (Ref 27-21-0 MP).
B. Check that rigging pin R-5 is installed in feel and centering unit.
C. Check standby rudder actuator at installation points for allowable wear (Ref 27-21-141 I/C).
501
Feb 20/88 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-21-141 Page 401
E04134
Standby Rudder Actuator Installation 501
27-21-141 Figure 401 (Sheet 1) Feb 20/94
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
5. Install Standby Rudder Actuator
A. Place standby rudder actuator in position and install bolts, washers, nylon wear washers (installed on the aft end of the actuator only) and nuts to secure forward and aft ends of actuator to structure. When installing aft bolt, observe gap per Fig. 401, Section A-A.
NOTE: The quantity of the wear washers is as the clearance allows. The maximum number of washers allowed is 3.
B. Tighten aft nut to 400-500 pound-inches for self locking nuts and 130-180 pound-inches for castellated nuts. Install cotter pin if castellated nut is used.
C. Tighten forward nut to 500-600 pound-inches and install cotter pin.
D. Remove caps from hydraulic lines and ports and connect hydraulic lines to actuator.
E. Connect rod assembly to actuator crank and secure with bolt, washer and nut.
F. Restore airplane to normal hydraulic configuration (AMM 27-21-0/201).
G. Adjust and test rudder standby actuator (Ref Standby Rudder Actuator -Adjustment/Test).
H. Check hydraulic reservoirs and service if required (AMM 12-12-0/201).
C36862
500 Standby Rudder Actuator Installation
May 01/01 Figure 401 (Sheet 2) 27-21-141
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
STANDBY RUDDER ACTUATOR - ADJUSTMENT/TEST
1. Standby Rudder Actuator Adjustment
A. Equipment and Materials
(1) Rigging Pins Kit - F70207-3, -52, -61, or -84:
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