"STA" CABLE (UPPER LIMIT) 3
B
TABLE II
UNITS TRIM POS. STAB. LE "B" DIMENSION
0 3` UP BALLNUT AGAINST STOP 45.84 (REF)
1 2` UP 44.42
2 1` UP 43.00
3 0` 41.57
4 1` DOWN 40.15
5 2` DOWN 38.71
6 3` DOWN 37.28
7 4` DOWN 35.84
8 5` DOWN 34.40
9 6` DOWN 32.96
10 7` DOWN 31.51
11 8` DOWN 30.06
12 9` DOWN 28.61
13 10` DOWN 27.16
14 11` DOWN 25.70
15 12` DOWN 24.24
16 13` DOWN 22.79
17 14` DOWN BALLNUT AGAINST STOP 21.32 (REF)
UPPER
STOP
LOWER
STOP
TRAMMEL
"B" DIMENSION BAR
2
FWD
STABILIZER TRIM JACKSCREW
SHOWN WITH STABILIZER LEADING
EDGE AT ZERO DEGREES
C
1 WHEN RIGGING, THE CABLE LOAD MUST BE IN +40/-10 POUNDS OF THE TABLE I VALUES. IF THE CABLE LOADS DEVIATE MORE THAN +40/-15 POUNDS FROM THE TABLE I VALUES, YOU MUST RE-RIG
2 THE "B" DIMENSION IS MEASURED BETWEEN THE CENTER OF THE UPPER AND LOWER GIMBAL PINS. SEE TABLE II
3 CLEARANCE SHOWN WITH THE STA CABLE IN THE UPPER POSITION. SAME CLEARANCE REQUIRED AT THE LOWER POSITION
Horizontal Stabilizer Trim System Adjustment
Figure 501 (Sheet 2)
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L86400
A
737-300/400/500
MAINTENANCE MANUAL
STABILIZER TRIM
CONTROL SWITCH
COLUMNCONTROL COLUMN CUTOUT SWITCH
STABILIZER TRIM
STABILIZER
CONTROL SWITCH
TRIM WHEEL
STABILIZER POSITION INDICATOR
ELEVATOR
TORQUE TUBE
IDLER SPROCKET
CRANK COLUMN CUTOUT
6. CHAIN SWITCH
ASSEMBLY SEE A1. FLEXIBLE SHAFT
2. AFT SUPPORT LINK
SEEC D
STB CABLE 1
EYEBOLT THREAD
EXTENSION
STA CABLE 1 (3 LOCATIONS)
5. FORWARD
SUPPORT
A2
LINK
SEE E
A
4. TURNBUCKLE
CABLE DRUM
MECHANISM GEAR HOUSING
12.50 INCHES 3. MECHANISM
(REF) SPROCKET
1
APPROXIMATELY 4-1/2 TURNS
OF STB CABLE FROM THE TOP
OF THE DRUM AND 28-1/2 TURNS
OF STA CABLE FROM THE BOTTOM
OF THE DRUM WITH THE STABILIZER
IS AT THE FULL AIRPLANE
NOSEDOWN
2
ON THE TWO SIDES OF THE CABLE DRUM
Chain Assembly Adjustment Figure 502 (Sheet 1)
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A
737-300/400/500MAINTENANCE MANUAL
CHAIN LINKS
SEE B LINK
IDLERCHAIN MOVEMENT SPROCKETFORCE POINT
COTTER PIN (2 LOCATIONS)
APPLY A 5 POUND
PERPENDICULAR
FORCE TO THE
CHAIN ASSEMBLY
CHAIN MOVEMENT
0.25 |0.07 INCH
CHAIN LINKS
4.5 |1.0
B
INCH
2. AFT SUPPORT
3. MECHANISM
LINK SPROCKET
UPPER ADJUSTING NUT(2 LOCATIONS)
AFT EYEBOLT THREAD EXTENSION(2 LOCATIONS)
A
VIEW IN THE FORWARD DIRECTION
D
5. FORWARD
FORWARD EYEBOLT SUPPORT
THREAD EXTENSION LINK
2. AFT UPPER
SUPPORT ADJUSTING
LINK NUT
ADJUSTING NUTS
VIEW IN THE FORWARD DIRECTION C
E
Chain Assembly Adjustment
Figure 502 (Sheet 2)
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