747-400 AMM 飞机维护手册 起落架 LANDING GEAR 4(9)

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 (1) Install the ground locks in all landing gear (AMM 09-11-00/201).
 S 494-032
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  Do this task: "Installation of the Door Locks on the Wing Landing Gear" (AMM 32-00-30/201).
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MAINTENANCE MANUAL

SEE A FORWARD DOOR ACTUATORSEEC SEEB
BELLCRANK FWD
A
A
BELLCRANK SUPPORT FITTING
OPERATOR ROD DOOR ACTUATOR
THICK
SHOWN WITH DOORS OPEN NYLON WASHER A
THIN NYLON WASHERS
NUT SPACER WASHER
BELLCRANK
FITTING FOR THE FORWARD
DOOR MECHANISM BULKHEAD

FITTING
BELLCRANK
BELLCRANK BOLT
SUPPORT FITTING WASHER
BOLT B
A-A
Installation of the Forward Door Bellcrank for the Nose Wheel Well
Figure 401 (Sheet 1)

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1.26-1.30 INCHES  1.26-1.30 INCHES
C-C

Installation of the Forward Door Bellcrank for the Nose Wheel Well
Figure 401 (Sheet 2)

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 S 494-033
 (3)  
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).

 S 844-035

 (4)  
Make sure all persons and equipment are clear of the door operation.

 S 864-004

 (5)  
Operate the release handle to open the wheel well doors for the nose landing gear (See "Ground Door Release Handle Open Operation").

 NOTE: The handle is at the outer fuselage above the aft door hinge
____ of the left side of the nose landing gear.
 S 844-005
 (6)  
Decrease the pressure on the hydraulic system No. 1
 (AMM 29-11-00/201).

 S 034-006

 (7)  
Disconnect the two rod assemblies from the bellcrank.

 S 034-007

 (8)  
Disconnect the forward door actuator from the bellcrank.

 S 034-008

 (9)
Disconnect the bellcrank from the bellcrank support fitting.

 (a)  
Use the left side of the wheel well from the electronics compartment to get access to the nut.

 NOTE: The nut is on the bellcrank bolt on the forward side of
____ the forward bulkhead for the wheel well.
 (b)  Hold the bellcrank and remove the nut, the bolt, the washers and the spacer from the bellcrank.
 S 024-009
 (10) Remove the bellcrank.
 TASK 32-22-05-404-010
 3. Forward Door Bellcrank Installation (Fig. 401).
___________________________________
 A. Standard Tools and Equipment
 (1)  
Dial Gage

 B.
Consumable Materials

 (1)  
D00633 Grease BMS 3-33 (preferred)

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