0.080-0.100 INCH
MAIN LANDING GEAR DOOR SEAL
DOOR CLOSED SENSOR MAIN LANDING GEAR MAIN LANDING(LEFT S10076 SYS 2) DOOR OUTER SKIN GEAR DOOR(RIGHT S10072 SYS 2)
B C
Main Landing Gear Door Closed Sensors
Figure 505

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757 MAINTENANCE MANUAL
RETRACT WHEEL WELL ACTUATOR AFT WALL NOSE LANDING GEAR UP/DOWN LOCKED SENSOR (S10065 SYS 1) (S10078 SYS 2)FORWARD LOCK LINK
STRUT DRAG UPPER 
SEE  A 
SEE  B  ACTUATOR RETRACT 
UPPER DRAG STRUT 
GEAR UP/DOWN NOSE LANDING LOCKED SENSOR  A 
FWD  INCH 0.04-0.05 

NOSE LANDING GEAR LOCK LINK B
Nose Landing Gear Up/Down Locked Sensors Figure 506
WHEEL WELL AFT WALL
AFT LOCK LINK
NOSE LANDING GEAR LOCK LINK
SEE B
FWD
SPRING
AFT LOCK
LINK

FLEXIBLE
CONDUIT

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FWD INBD  ASSY (REF) LOCK LINK SEE A  (RIGHT S10070 SYS 2) (RIGHT S10057 SYS 1) (LEFT S10074 SYS 2) (LEFT S10061 SYS 1) MAIN LANDING GEAR SENSOR DOWN AND LOCKED 
LANDING GEAR LEFT MAIN (RIGHT EQUIVALENT)  0.04-0.07 INCH (1.016-1.778 mm) LOWER LOCK LINK (REF)  (REF) TARGET SENSOR  UPPER LOCK LINK (REF) 
MLG DOWN AND LOCKED SENSORS A-A 
(REF) ACTUATOR LOCK 
(REF) ASSEMBLY LOCK LINK 
(REF) REAR SPAR 
MLG DOWN SENSORS AND LOCKED  A  INBD FWD 
A  LOCK LINK ASSEMBLY (REF) A 

Main Landing Gear Down and Locked Sensor
Figure 507

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 (8)  S 715-192Make sure only one half of each NOSE, LEFT, RIGHT, GEAR, and DOORS light is on.
 (9)  S 865-184Close this circuit breaker on the P11 panel: (a) 11P28, R IND LTS 1
 S 715-016

 (10)
 Make sure the two halves of the green NOSE, RIGHT, and LEFT lights and each amber GEAR and DOORS light are on.

 S 865-017

 (11)
 Open this circuit breaker on the P11 panel:

 (a)  
11C30, LANDING GEAR POS SYS 1

 S 715-018
 (12)
 Make sure only one half of each green NOSE, LEFT, and RIGHT lights is on and each amber GEAR and DOORS light is off.

 S 865-019

 (13)
 Close this circuit breaker on the P11 panel:

 (a)  
11C30, LDG GEAR POS SYS 1

 S 865-193
 (14)
 Look at the overhead circuit breaker panel, P11 at grid location 11C19 and identify the circuit breaker name that is at this location.

 S 865-020

 (15)
 Open these circuit breakers on the P11 panel:

 (a)  
ON AIRPLANES WITH THE "LANDING GEAR POS SYS 2 ALTN" CIRCUIT BREAKER INSTALLED AT PANEL GRID LOCATION 11C19: 1) 11C19, LANDING GEAR POS SYS 2 ALTN 2) 11S23, LDG GEAR POS SYS 2

 (b)  
ON AIRPLANES WITHOUT THE "LANDING GEAR POS SYS 2 ALTN" CIRCUIT BREAKER INSTALLED AT PANEL GRID LOCATION 11C19: 1) 11S23, LANDING GEAR POS SYS 2

 S 715-021
 (16) Make sure only one half of each green NOSE, RIGHT, and LEFT lights is on, and each amber GEAR light is on, and the DOORS lights are off.
 

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 S 865-022
 (17)
 Close these circuit breakers on the P11 panel:

 (a)  
ON AIRPLANES WITH THE "LANDING GEAR POS 2 ALTN" CIRCUIT BREAKER INSTALLED AT PANEL GRID LOCATION 11C19: 1) 11C19, LANDING GEAR POS 2 ALTN 2) 11S23, LDG GEAR POS SYS 2

 (b)  
ON AIRPLANES WITHOUT THE "LANDING GEAR POS 2 ALTN" CIRCUIT BREAKER INSTALLED AT PANEL GRID LOCATION 11C19: 1) 11S23, LANDING GEAR POS SYS 2

 S 715-023
 (18)
 Make sure the two halves of each green NOSE, LEFT, and RIGHT light and each amber GEAR and DOORS light are on.

 S 865-024

 (19)
 Move the control lever for the landing gear to the DN position.

 G.  
Do a test of the Landing Gear Position Indication and Warning System No. 1 (Fig. 501)

 S 865-194
 (1)  Use the tables that follow to help you find the sensors on the figures.
　
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