STAB AUTOPILOT LIMIT SWITCH (NOSE UP)
14.0 (S144)
STAB TRIM LIMIT SWITCHES (AIRPLANE NOSE UP)
SEE B
"B"
DIMENSION
2
45.49 |0.05
42.28 |0.05 737-300
41.85 |0.05 737-400 AND -500
27.88 |0.05
25.70 |0.05
STAB TRIM LIMIT SWITCHES (AIRPLANE NOSE DOWN)
SEE B
1 "B" DIMENSION TRAMMEL ACTUATOR BAR
FWD
A
1 THE "B" DIMENSION IS MEASURED BETWEEN THE CENTER OF THE UPPER AND LOWER GIMBAL PINS
2 THE TRIM SYSTEM CAN MOVE THE STABILIZER TO A POSITION MORE THAN THE LIMITS THAT WERE SET DURING THE ADJUSTMENT OF THE LIMIT SWITCHES. THIS CONDITION IS USUAL. THUS, THE B DIMENSION TOLERANCES FOR THE TEST ARE LARGER THAN THE TOLERANCES FOR THE ADJUSTMENT.
L86798
Stabilizer Trim Limit Switch Adjustment
Figure 501 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-94
ALL ú ú 02 Page 502 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
STAB TAKEOFF WARNING
SWITCH (S546)
(REF 31-26-24)
STAB AUTOPILOT AND
ELEC ACTUATOR LIMIT
SWITCH (S145)
SEE C
STAB ELEC ACTUATOR LIMIT SWITCH (S844)
SEE C
SWITCH MOUNTING BRACKETS
CAM
STAB TAKEOFF WARNING SWITCH (S132) (REF 31-26-24)
SWITCH SWITCH NUT ARM NUT (TIGHTEN AND
FWD SWITCH LOCKWIRE TO
STAB AUTOPILOT LIMITSTAB ELEC ACTUATOR
ARM BRACKET)SWITCH (S144)LIMIT SWITCH (S115)
MOUNTING BRACKET SEE CSEE C
B
LOCKSCREW LOCKWIRE
LIMIT SWITCH
TYPICAL ALL SWITCHES C
Stabilizer Trim Limit Switch AdjustmentFigure 501 (Sheet 2)
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27-41-94
ALL ú ú 01 Page 503 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
S 825-006
(4)
Adjust the limit switches:
(a)
With the stabilizer leading edge in the full down position (airplane nose up), Verify that the roller on switches S115 and S144 can be rotated away from the surface of the cam by a minimum of 0.032 inch.
(b)
With the stabilizer leading edge in the full up position (airplane nose down), Verify that the roller on switches S145 and S844 can be rotated away from the surface of the cam by a minimum of 0.032 inch.
(c)
Tighten the switch nut.
(d)
Install a lockwire on the switch nut and the mounting bracket.
(e) Tighten the switch arm nut to 20-25 pound-inches. ú ú S 715-016 ú (5) Do this task: "Stabilizer Trim Limit Switches Test" ú (AMM 27-41-94/501).
TASK 27-41-94-725-014
3. Stabilizer Trim Limit Switches Test
___________________________________
A. General
(1)
The trim system can move the stabilizer to a position more than the limits that were set during the adjustment of the limit switches. This condition is usual. Thus the dimension B tolerances for the test are larger than the tolerances for the adjustment.
B.
Special Tools and Equipment
(1)
Actuator Trammel Bar - F80055-1
C.
References
(1)
AMM 12-31-41/201, Body Section 48 Access Doors and Panels
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 29-15-00/201, Hydraulic Power
(4)
AMM 31-26-00/501, Aural Warning System
D.
Access
(1)
Location Zone
701 Tail Compartment
(2)
Access Panels
3701 Stabilizer Trim Access Door
E.
Procedure
(1)
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
(2) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 3(124)
