S 434-003
(8)
Install the electrical connectors on the sensors.
S 824-013
(9)
Do this task: Stabilizer Position Sensor Adjustment/Test (Ref 22-11-31/501).
S 414-014
(10)
Install the access panel.
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A
737-300/400/500MAINTENANCE MANUAL
STABILIZER POSITION SENSOR - ADJUSTMENT/TEST
____________________________________________
1. General_______
A. This procedure contains three tasks. The first two tasks do the elevator position sensor adjustment. Only one of the tasks is necessary. These tasks use:
(1)
F80217-125 Test Set
(2)
DFCS BITE
B. These are followed by a procedure to do a test of the elevator position sensor.
C. The stabilizer positon sensors are connected to the stabilizer torque tube crank arms and installed on the aft bulkhead station 1156. The stabilizer position sensors are found on opposite sides of the elevator feel mechanism (AMM 27-31-00/201 Elevator and Tab Control System).
D. To get access to the stabilizer position sensor, you will remove access panel 3802 on the tail cone (AMM 12-31-41/201, Access Doors and Panels).
E. The autopilot system and all elevator rigging must fully adjusted before the actuator can be adjusted. The mach trim system must be able to operate and the actuator nulled.
TASK 22-11-31-825-001
2. Stabilizer Position Sensor Adjustment (F80217-123 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)
AMM 12-31-41/201, Access Doors and Panels
(2)
AMM 24-22-00/201, Electrical Power Control
(3)
AMM 27-41-00/501, Horizontal Stabilizer Trim Control System
(4)
AMM 29-15-00/201, Hydraulic Systems
C. Access
(1)
Location Zone
102 Control Cabin
705 Tail Cone Access Panel
(2)
Access Panels
3802 Tail Cone Access Door
D. Prepare to Adjust
S 865-002
(1)
Supply electrical power (AMM 24-22-00/201, Electrical Power Control).
S 865-005
(2)
Open the FLT CONT SYS circuit breaker on the P6 circuit breaker panel.
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A 737-300/400/500MAINTENANCE MANUAL
S 765-006
(3) Make sure the mach trim actuator is nulled.
NOTE: The actuator is nulled when the voltage measured between
____ FCC front test connector J6-37 and J6-1 is below 50mV.
S 865-007
(4) Open the circuit breakers shown below and attach DO-NOT-CLOSE tags.
(a)
P18-1 Circuit Breaker Panel
1) AFCS A SNSR EXC AC
2) AFCS A FCC DC
3) AFCS A ENGAGE INTLK
4) AFCS WARN LIGHT
5) AIRPLANES WITH MECHANICAL AILERON FORCE LIMITER;
AFDS AIL FORCE LIMITER
6) AFDS MCP DC
7) MACH TRIM A AC
8) MACH TRIM A DC
9) AFC AUTO THROTTLE AC
10) AFC AUTO THROTTLE DC
11) AFC YAW DAMPER AC
12) AFC YAW DAMPER DC
(b)
P6-2 Circuit Breaker Panel
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