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A

747-400
FAULT ISOLATION/MAINT MANUAL

FORWARD DOOR OPERATOR ASSEMBLY
SEE B
AFT DOOR OPERATOR ROD
DRIVE CRANK (REF)
AFT NOSE GEAR DOOR 
NOSE GEAR TRUNNION 
AFT DOOR OPERATOR ASSEMBLY B  NOTE:____  LEFT SIDE SHOWN RIGHT SIDE SIMILAR. 

Nose Gear Doors - Component Location
Figure 102 (Sheet 2)

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747-400 MAINTENANCE MANUAL
 FORWARD NOSE WHEEL WELL DOORS - MAINTENANCE PRACTICES
_____________________________________________________
 1.  General_______
 A.  This procedure covers removal and installation of the nose gear wheel well forward doors. It also contains steps to adjust the doors and wear limit data for installation components.
 TASK 32-22-01-002-001
 2.  Forward Nose Wheel Well Doors Removal (Fig. 201)_____________________________________
 A.  References
 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 32-00-30/201, Landing Gear Door Locks

 (3)  
AIPC 32-22-01 Fig. 1

 (4)  
AIPC 32-22-03 Fig. 2

 B.  
Access

 (1)  
Location Zone
 711 Nose Landing Gear Door, Forward, LH
 712 Nose Landing Gear Door, Forward, RH

 C.  
Procedure

 S 492-002
 (1)  Make sure the ground locks are installed in the landing gear (AMM 09-11-00/201).
 S 492-003
 WARNING: REFER TO AMM 32-00-30/201 FOR THE LOCK INSTALLATION PROCEDURE.
_______ 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)  
Install the door locks for the nose landing gear (AMM 32-00-30/201).

 S 022-004

 (3)  
Remove the forward wheel well doors:

 (a)  
Disconnect the bonding jumpers from the forward door hinges.

 1)  Remove the screws (16, Fig. 201) and the washers (17, 18, and 19).
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747-400 MAINTENANCE MANUAL
STA 253 SEE B
SEE C
SEE C
BONDING JUMPER
16.
SCREW

17.
WASHER

18.
WASHER

19.
WASHER

FWD
3.
BOLT

4.
WASHER

1.
 LEFT FORWARD DOOR

2.
 RIGHT FORWARD DOOR (OPP)

BONDING JUMPER
16. SCREW
A
17.
WASHER

18.
WASHER 7. NUT 5. SPACER

19.
WASHER

6. WASHER
15. BOLT 8. BOLT
14. WASHER  B
13. SPACER
9.
WASHER

10.
BUSHING

12. NUT
10.
BUSHING

11.
WASHER

C
Forward Nose Wheel Well Doors Installation Figure 201 (Sheet 1)
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747-400
MAINTENANCE MANUAL

SEE D
DOOR
SEE F ACTUATOR
FWD
BELLCRANK
BELLCRANK SUPPORT FITTING
OPERATOR ROD
SEE E SHOWN WITH THE DOORS OPEN
D
22. OPERATOR ROD
DOOR OPERATEDSEQUENCE VALVE ROD ASSY
24.WASHER
(LEFT)
LOCKNUT 
20. BUSHING 
27.NUT  25.BUSHING 
21. DOOR FITTING 
　
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