(2)
Autopilot System
(3)
Mach Trim System
TASK 22-11-14-825-001
2. Elevator Neutral Shift Sensor Adjustment (F80217-139 Test Set)________________________________________
A. General
(1)
In this procedure, you use the F80217-139 test set to do the adjustment. To do the adjustment, you have to remove the 3802 access door to get access to the sensor.
(2)
You can find the sensor on the forward right side of the feel and centering unit. The feel and centering unit is aft of the bulkhead station 1156.
B. Special Tools and Equipment
(1) Test Set - F80217-139
C. Standard Tools and Equipment
(1) VTVM - FLUKE (Digital)
D. References
(1)
12-31-41/201, Body Section 48 Access Doors and Panels
(2)
22-11-00/501 or 22-11-01/501, Digital Flight Control System
(3)
24-22-00/201, Manual Control
(4)
27-31-00/201, Elevator and Tab Control System
(5)
29-15-00/201, Hydraulic A, B, and Standby System
E. Access
(1)
Location
705 Tail Cone
(2)
Access Panel
3802 Tail Cone Access Door
F. Prepare for Sensor Adjustment
S 865-002
(1) Supply electrical power (Ref 24-22-00/201).
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A 737-300/400/500MAINTENANCE MANUAL
S 865-039
(2) Do this task to fully adjust the elevator rigging before you can adjust the neutral shift sensor: "Adjustment - Elevator and Tab Control System" (Ref 27-31-00/501).
S 865-003
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL
_______ CONTROL SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDER, ELEVATORS, FLAPS, SLATS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3)
Supply hydraulic power (Ref 29-15-00/201).
S 865-004
(4)
Set the hydraulic systems A and B switches on the P5 panel to the OFF position.
S 865-005
(5)
Open the SHUTOFF VALVES FLT CONT circuit breaker on the P6 Circuit Breaker Panel and attach the DO-NOT-CLOSE tag.
S 015-006
(6)
Remove the 3802 access door on the tail cone (Ref 12-31-41/201).
S 865-007
(7)
Set the horizontal stabilizer to 3-unit of trim or a B dimension of
41.57 (|0.05) inches.
S 865-008
(8) Make sure that the voltage between J6-37 and J6-1 in the FCC test connector is below 50mvdc.
NOTE: The Mach trim actuator is at null when the voltage
____
is below 50 mvdc.
S 865-037
(9) Open these circuit breakers and attach the DO-NOT-CLOSE tags:
(a) P6 Circuit Breaker Panel
1) AUTO FLT CONT SYS B MACH TRIM AC
2) AUTO FLT CONT SYS B MACH TRIM DC
3) AFDS MCP CRS-2
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A
737-300/400/500MAINTENANCE MANUAL
4) AUTO FLT CONT SYS B SNSR EXC AC
5) AUTO FLT CONT SYS B FCC DC
6) AUTO FLT CONT SYS B ENGAGE INTLK B
7) AUTO FLT CONT SYS B WARN LIGHT BAT
(b) P18 Circuit Breaker Panel
1) AUTO FLT CONT SYS A MACH TRIM AC
2) AUTO FLT CONT SYS A MACH TRIM DC
3) Airplanes with mechanical aileron force limiter:
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本文鏈接地址：737-300 400 500 AMM 飛機維護手冊 自動飛行 AUTOFLIGHT 1(165)
