APL 
NOSE DN
APL 
NOSE UP 
STAB TRIM  STAB TRIM 
ALTN 
STAB TRIM 
NOSE APL  0  NOSE APL  0 
DOWN  DOWN 
2  2 
S  S 
A T  4  A T  4 
B  6  B  6 
T  T 
R  8  R  8 
I  I 
M  10  M  10 
12  12 
UP NOSE APL F F O 16 14  NORM  UP NOSE APL F F O 16 14 
CUT 
OUT 
C  R 
STAB TRIM 
POSITION  STABILIZER 
INDICATOR  TRIM SHUTOFF  CONTROL STAND PANEL, P10 
(2 LOCATIONS)  SWITCHES 
A 
Horizontal Stabilizer Trim Control System 
Figure 501 (Sheet 2) 

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A
757 MAINTENANCE MANUAL
MASTER CAUTION AND WARNING LIGHTS (2 LOCATIONS)

PILOT'S CENTER INSTRUMENT PANEL

Horizontal Stabilizer Trim Control System
Figure 501 (Sheet 3)

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 ALL  ú
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A
757
MAINTENANCE MANUAL

STABILIZER COMPARTMENT COMPONENTS SEE A 
SP2B  SLA  SLB 
SLA  SP1B SLB  SP1A  SP2A  STABILIZER 

RIG PIN 
E/ST-5 
HOLE 
STABILIZER TRIM  RIG PIN 
AFT QUADRANT  E/ST-4 HOLE 
SEE  B  FWD 
STABILIZER TRIM LIMIT 
SWITCH AND POSITION  STABILIZER TRIM 
TRANSMITTER MODULE  BALLSCREW 
(3 LOCATIONS)  RIG PIN  ACTUATOR 
CONNECTOR ELECTRICAL  E/ST-3 HOLE  SEE  C 
(EXAMPLE)  A 

Stabilizer Compartment Components
Figure 502 (Sheet 1)

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A

757
MAINTENANCE MANUAL

SEE A STABILIZER COMPARTMENT COMPONENTS 
SP2B  SP2A  SP3B  SP3A STABILIZER 
SP1B  SP1A 

STABILIZER TRIM LIMIT 
SWITCH AND POSITION 
TRANSMITTER MODULE  RIG PIN 
(3 LOCATIONS)  HOLE E/ST5 

RIG PIN HOLE E/ST4 
FWD (EXAMPLE) ELECTRICAL CONNECTOR  RIG PIN HOLE E/ST3  CSEE ACTUATOR BALLSCREW STABILIZER TRIM 
A 
Stabilizer Compartment Components Figure 502 (Sheet 2) 

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757 MAINTENANCE MANUAL 
ST1A  SLA ST2B  ST2A  SLB 
ST1B 

STABILIZER TRIM CONTROL MODULE (2 LOCATIONS) RIG PIN
RIG PIN
HOLE E/ST2
HOLE E/ST1
STABILIZER TRIM AFT QUADRANT
1  THE GAGE ASSEMBLY CAN BE USED TO ACCURATELY SET THE STABILIZER DIMENSION B TO 19.07 |0.01 INCHES.
TO USE, PUT THE GAGE ASSEMBLY AGAINST THE BALLSCREW SUCH THAT THE LOWER BOLTHEAD IS ON THE SHOULDER OF THE LOWER STOP. MAKE SURE THAT THE FEELER BLADE CANNOT BE PUT BETWEEN THE GAGE ASSEMBLY UPPER BOLTHEAD AND THE SHOULDER OF THE UPPER STOP. MAKE SURE THE SHOULDER OF THE UPPER STOP DOES NOT TOUCH THE UPPER BOLTHEAD.
　
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