757
MAINTENANCE MANUAL

 S 842-029
 (13)
 Make sure the warning streamers on the door locks can be seen from the ground.

 S 862-030

 (14)
 Remove the electrical power if it is not necessary (Ref 24-22-00).

 TASK 32-00-15-002-031
 3. Remove the Door Locks and Close the Landing Gear Doors
______________________________________________________
 A. Equipment
 (1)  
Door Actuator Lock Equipment, MLG - B32012-45

 (2)  
Door Actuator Lock, NLG - B32013-12

 B.
References

 (1)  
06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels

 (2)  
24-22-00/201, Electrical Power - Control

 (3)  
29-11-00/201, Pressurize/Depressurize Main Hydraulic System

 (4)  
32-00-20/201, Landing Gear Downlocks

 C.
Access

 (1)  
Location Zones
 115/116 Nose Landing Gear (NLG) Wheel Well
 143/144 Main Landing Gear (MLG) Wheel Well
 711 Nose Landing Gear
 713/714 Forward NLG Doors
 715/716 Aft NLG Doors
 731/741 Main Landing Gear
 732/742 MLG Body Doors
 733/743 MLG Oleo Doors

 (2)  
Access Panels
 197PL Ground Control Access Door (Left)
 198PR Ground Control Access Door (Right)

 D.
Prepare to Remove the Door Locks.

 S 862-032
 (1)  Supply electrical power (Ref 24-22-00).
 S 862-033
 WARNING: MAKE SURE THE PRESSURE IS REMOVED FROM THE LEFT AND RIGHT
_______ HYDRAULIC SYSTEMS BEFORE YOU GO INTO THE WHEEL WELLS TO REMOVE THE DOOR LOCKS. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  Remove the pressure from the left and right hydraulic systems and reservoirs (Ref 29-11-00).
 

 32-00-15
 ALL  ú ú 01 Page 207 ú Mar 20/97
 
A
757
MAINTENANCE MANUAL

 S 842-034
 (3)  Make sure the L and R MAIN GEAR DOOR UNSAFE lights in each main wheel well are off. The lights are on the keel beam.
 NOTE: The door safety valve is in the OFF (or SAFETY) position when
____
 the safety light is off.

 S 012-035
 (4)  
Open the ground control access door, 198PR for the landing gear doors (AMM 06-41-00/201) (Fig. 201).

 S 842-037

 (5)  
If the DOOR UNSAFE light, on the keel beam in each main wheel well, is on, do the steps that follow:

 (a)  
At the same time, move the ALL DOORS OPEN ARM switch to the ARM position and the ALL DOORS OPEN switch to the OPEN position.

 (b)  
Make sure the light goes off.

 S 842-039
 (6)  
Push the MAIN GEAR DOOR UNSAFE LT PTT switch on the P72 panel.

 (a)  
Make sure the DOOR UNSAFE lights come on.

 (b)  
Release the switch.

 (c)  
Make sure the lights go off.

 S 092-041
 (7)  
Remove the door locks from the main landing gear (2 locations) (Fig. 203).

 S 842-042

 (8)  
Make sure the NOSE GEAR DOOR UNSAFE light, on the front wall of the nose wheel well, is off.

 S 842-043

 (9)  
If the DOOR UNSAFE light, on the keel beam in each main wheel well, is on, do the steps that follow:

 (a)  
At the same time, move the ALL DOORS OPEN ARM switch to the ARM position and the ALL DOORS OPEN switch to the OPEN position.

 (b)  
　
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