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时间:2011-10-30 09:55来源:蓝天飞行翻译 作者:航空
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DOOR  RODS FOR THE LEFT AND RIGHT DOOR MUST NOT HAVE MORE THAN
C
A 0.03 INCH DIFFERENCE
Nose Landing Gear Forward Door Operating Rods and Door Stops Adjustment Figure 502


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MAINTENANCE MANUAL

C
C
4

Nose Landing Gear Forward Door Adjustment
Figure 503 (Sheet 1)

 

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A 757 MAINTENANCE MANUAL
59. WASHER
(4 LOCATIONS)
27. LAMINATED

DOOR

APPLY THE CORROSION PREVENTIVE COMPOUND TO THE HOLE,
IMMEDIATELY INSTALL THE BOLT A POSITIVE TOLERANCE INDICATES THE AFT DOOR IS OUTSIDE THE FORWARD DOOR A NEGATIVE TOLERANCE INDICATES THE AFT DOOR IS INSIDE THE FORWARD DOOR
A POSITIVE TOLERANCE INDICATES THE DOOR IS OUTSIDE THE BODY CONTOUR
A NEGATIVE TOLERANCE INDICATES THE DOOR IS INSIDE THE BODY CONTOUR
Nose Landing Gear Forward Door Adjustment
Figure 503 (Sheet 2)

 

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757 MAINTENANCE MANUAL
 S 225-022
 (19)
 Measure the clearances and tolerances between the left (16) and right (17) doors and between the doors and structure (View B-B, C-C and D-D).

 F.
Adjust the Forward Doors (Fig. 502, 503).


 NOTE:____Aft doors must be in the closed position. They must be adjusted before you adjust the forward doors.
 S 035-023
 (1)  
Remove the left and right operating rods (32, 33) for the forward door.

 S 865-024

 (2)  
Remove the pressure from the left hydraulic system (AMM 29-11-00/201).

 S 095-025

 (3)  
Remove the door lock for the nose landing gear (AMM 32-00-15/201).

 S 865-026

 (4)  
Make sure the control lever for the landing gear is in OFF.

 S 865-027

 (5)  
Pressurize the left hydraulic system (AMM 29-11-00/201).

 S 865-028

 (6)  
Move the control lever for the landing gear to UP to retract the door actuator for the nose landing gear.


 S 865-086
 WARNING: PUT THE CONTROL LEVER FOR THE LANDING GEAR TO OFF BEFORE YOU DO
_______ WORK IN THE WHEEL WELL. MOVEMENT OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (7)  
Put the control lever to OFF.

 (a)  
Attach a DO-NOT-OPERATE tag.


 

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 (8)  S 225-030Measure the clearance at the forward and sidewall door stops (30). (Fig. 502, Details B and D).
 (9)  S 225-031Measure the length of the operating rods (32, 34) for the forward door (Detail A).
 S 035-032

 (10)
 Loosen the jamnuts (46) and adjust the length of rods (32, 34) if it is necessary.

 S 845-033

 (11)
 Make sure the ends of the rod can be seen through the inspection holes.

 S 435-034

 (12)
 Install these parts to connect the operating rod (32) for the left door to the bellcrank (33):

 (a)  
Bolt (45)

 (b)  
Bushings (44)

 (c)  
Washer (43)

 (d)  
Nut (42)

 (e)  
Cotter Pin (41)


 S 825-087
 CAUTION: DO NOT APPLY MORE THAN A 200 POUND LOAD AT THE FORWARD DOOR
_______ STOP WHEN YOU ADJUST THE DOOR. LOADS MORE THAN 200 POUNDS CAN CAUSE DAMAGE TO THE DOOR.
 (13)
 Adjust the left door.

 (a)  
Manually close the door until the door touches the door stops.

 (b)  
Lubricate with grease and install the parts that follow to connect the door operating rod (32, 34) to the door hinge (50). 1) Bolt (35) 2) Bushing (36) 3) Washer (37) 4) Nut (38) 5) Cotter Pin (39)


 

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 (c)  Adjust door stops (30, 47) (Fig. 502, Details B, and D)
 to get the clearances and tolerances shown
 (Fig. 503, Views A-A, B-B, C-C).
 (d)  Add or remove shims (52) at the door hinges (50) (View B-B,
 Fig. 503).
 1) Adjust the length of the operating rod for the door to get
 the clearance.
 (e)  Make sure the rod ends can be seen through the inspection
 
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