E55861
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MAINTENANCE MANUAL
MOUNTING
B-B C FREE POSITION C POSITION
1 GAP BETWEEN SWITCH BRACKET TAB AND ARM
Stabilizer Trim Control Limit Switch Installation
Figure 401 (Sheet 2)
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E55868
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747-400
MAINTENANCE MANUAL
0.01-0.06 INCH (0.25-1.52 mm)
STABLIZER CAM
ALTERNATE
ELECTRIC
0.25 UNITS
Stabilizer Trim Control Limit Switch Installation
Figure 401 (Sheet 3)
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D. Procedure
S 864-003
(1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P7, Overhead Circuit Breaker Panel
1) 7E6, STAB TRIM L CONT
2) 7E7, STAB TRIM L S/O VALVE
3) 7E8, STAB TRIM L RATE
4) 7C10, FLT CONT ELEC 2L AC
5) 7C11, FLT CONT ELEC 2L DC
6) 7C12, FLT CONT ELEC 1L AC
7) 7C13, FLT CONT ELEC 1L DC
8) 7E19, STAB TRIM R CONT
9) 7E20, STAB TRIM R S/O VALVE
10) 7E21, STAB TRIM R RATE
11) 7C14, FLT CONT ELEC 1R AC
12) 7C15, FLT CONT ELEC 1R DC
13) 7C16, FLT CONT ELEC 2R AC
14) 7C17, FLT CONT ELEC 2R DC
S 014-005
(2)
Open the access door 312A (AMM 06-09-05/201).
S 034-142
(3)
Cut the splices to isolate the switch wires from the wire bundle (WDM 27-41-11, WDM 27-41-21).
S 024-008
(4)
Remove the limit switch:
(a)
Identify the wire bundle conductors.
(b)
Remove four screws to remove the switch, bracket, and spacer.
(c)
Remove the locknut, the washer and the actuator arm from the switch shaft.
(d)
Remove the bracket-switch locknut.
(e)
Remove the switch from the mounting bracket.
TASK 27-41-08-404-009
3. Stabilizer Trim Limit Switch Installation (Fig. 401)_________________________________________
A. Standard Tools and Equipment
(1)
Feeler Gage - 0.010-0.020 inch
(2)
Ohmmeter
B.
References
(1)
AMM 06-09-05/201, Body Section 48 Access Doors and Panels
(2)
AMM 22-22-00/501, Automatic Stabilizer Trim System
(3)
AMM 24-22-00/201, Manual Control
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(4)
AMM 27-41-08/501, Stabilizer Trim Limit Switches
(5)
AMM 29-11-00/201, Main Hydraulic Supply System
(6)
AIPC 27-41-04, Fig. 3
(7)
WDM 27-41-11, WDM 27-41-21
C. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 3(187)
