AUTOPILOT INPUT CONTROL ROD FWD
AILERON
PCU A INPUT QUADRANT
MICRO ADJUSTMENT AILERON POSITION
SHAFT
NUT SENSOR AUTOPILOT INPUT
SEE A CONTROL ROD
AILERON POSITION SENSOR
FWD
SENSOR CLAMP
CRANK CLAMP SCREW SENSOR CLAMP
WASHER AND NUTBOLT WASHER AND NUT
SENSOR CASE (REF) CRANK SCREW WASHER
8.00 INCHES
CRANK AND NUT NOMINAL
CRANK SEE B
A ZERO REFERENCE ALIGNMENT MARKS
B
Aileron Position Sensor Installation
Figure 401
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22-11-29
ALL ú ú 01 Page 402 ú Mar 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
B. Access
(1) Location Zone
216 Left Main Wheel Well
217 Right Main Wheel Well
C. Prepare for Installation
S 864-008
(1) Set the ailerons and aileron trim to 0 units.
D. Install the Aileron Position Sensor
S 824-009
(1)
Align the index marks on the sensor housing and the sensor shaft.
S 434-010
(2)
Install the sensor in the clamp and the crank with the index mark aligned with the slot in the crank.
S 424-014
CAUTION: MAKE SURE THAT THE AUTOPILOT AILERON POSITION ROD IS INSTALLED
_______ CORRECTLY, AS SHOWN IN FIG. 401. INCORRECT POSITION CAN CAUSE AN AUTOPILOT COMMANDED TURN, UPON THE AUTOPILOT ENGAGEMENT.
(3)
Tighten the screw in the crank and the sensor clamp to permit the sensor to be turned when you adjust it.
S 824-012
(4)
Do this task: Aileron Position Sensor Adjustment/Test
(AMM 22-11-29/501).
(5)
Install the tire burst protection screens (if removed).
S 414-013
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22-11-29
ALL ú ú 01 Page 403 ú Nov 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
AILERON POSITION SENSOR - ADJUSTMENT/TEST
_________________________________________
1. General_______
A. This procedure contains four tasks. The first two tasks do the aileron position sensor adjustment. Only one of the tasks is necessary. These tasks use:
(1)
F80217-125 Test Set
(2)
DFCS BITE
B. The other two tasks do a test of the aileron position sensor. They are:
(1)
BITE Test.
(2)
Manual Test.
C. The aileron position sensor is installed on the left aileron torque tube. You will find it on the forward wall of the main wheel well, adjacent to the autopilot actuators (27-11-00/201 Aileron and Aileron Trim Control).
D. The autopilot system and all aileron rigging must be fully adjusted before the actuator can be adjusted (Ref 27-11-00/501 Aileron and Aileron Trim Control). The tire burst protection screens must be folded out of the way (if installed).
TASK 22-11-29-825-001
2. Aileron Position Sensor Adjustment (F80217-125 Test Set)__________________________________
A. Standard Tools and Equipment
(1)
VTVM - Fluke (digital).
(2)
F80217-125 Test Set - Autopilot Elevator/Rudder/Aileron Control Unit.
B. References
(1)
12-31-41/201, Access Doors and Panels
(2)
24-22-00/201, Electrical Power Control
(3)
27-11-00/201, Aileron and Aileron Trim Control System
(4)
27-41-00/501, Horizontal Stabilizer Trim Control
C. Access
(1) Location Zone
102 Control Cabin
216 Left Main Wheel Well
217 Right Main Wheel Well
D. Prepare for Adjustment
S 865-002
(1)
Make sure the ailerons and aileron trim are set to 0.
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