TASK 32-51-81-004-001
2. Rudder Pedal Steering Actuator Removal (Fig. 401)______________________________________
A. Standard Tools and Equipment
(1)
Rigging Pin - MS20392, 5/16-inch diameter (2 is necessary)
B.
References
(1)
32-00-01/201, Ground Lock Assemblies
C.
Procedure
S 494-002
(1)
Install the ground locks in the nose landing gear
(Ref 32-00-01/201).
S 014-003
(2)
Open the steering circuit breaker of the nose landing gear (C1027) on the P6 panel.
S 494-004
(3)
Install the rigging pin in the cable drum and the cable quadrant.
S 014-005
(4)
Remove the forward access panel from the left bulkhead of the nose wheel well.
NOTE: The removal of this panel will access you to the turnbuckles
____ of NGPPA and NGPPB cables. You can also access to the rotary actuator of the rudder pedal steering.
S 034-006
(5)
Loosen the position cables (NGPPA and NGPPB) at their turnbuckles.
S 034-007
(6)
Disconnect the position cables NGPPA and NGPPB on the nose landing gear from the rotary actuator pulley.
(a)
Remove the cotter pins at the ends of the cable terminals on each side of the rotary actuator pulley.
(7)
Disconnect the electrical connection at the rotary actuator.
(8)
Remove the four mounting bolts from the rotary actuator.
S 034-008
S 034-009
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32-51-81
ALL ú ú 01 Page 401 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
SEE A
NGPPA
NGPPB
NGPPB
STEERING
WHEEL
ROTARY
ACTUATOR
PULLEY
ROTARY
ACTUATOR
FWD
NGPPA
MOUNTING BOLT
NGPPB (TYP 4) 1 CAUTION:_______
B
C
ROTARY ACTUATOR
SEE B
CABLE
NGPPA
QUADRANT
RIG
PULLEY PIN HOLE
SEE C
CABLE
NGPPB
CABLE DRUM
A
Rudder Pedal Steering Rotary Actuator
Figure 401
NGPPA
NGPPA CABLE TERMINAL 1
NGPPB CABLE TERMINAL 1
ENDS OF COTTER PIN MUST NOT CONTACT HOUSING OF ACTUATOR AFTER INSTALLATION.
FWD
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32-51-81
ALL ú ú 01 Page 402 ú Oct 25/85
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 024-010
(9) Remove the rotary actuator.
TASK 32-51-81-404-011
3. Rudder Pedal Steering Actuator Installation (Fig. 401)
___________________________________________
A. References
(1)
32-51-00/501, Nose Wheel Steering System
B.
Procedure
S 434-012
(1)
Put the rotary actuator on the support bracket and install the four mounting bolts.
S 434-013
(2)
Connect the electrical supply to the actuator.
S 434-019
CAUTION: MAKE SURE THE ENDS OF THE COTTER PINS WILL NOT TOUCH THE
_______ HOUSING OF THE ACTUATOR AFTER YOU INSTALL. IF YOU INSTALL THE
PINS INCORRECTLY, A POSSIBLE DAMAGE TO THE EQUIPMENT CAN OCCUR.
(3)
Connect the position cables NGPPA and NGPPB to the rotary actuator pulley.
S 824-015
(4)
Adjust the position cables (Ref 32-51-00/501).
(5)
Remove the rigging pins from the cable drum and the quadrant.
S 414-017
(6)
Install the forward access panel to the leftside of the wheel well bulkhead on the nose landing gear.
