S 714-045
 (10)
 Retract and extend the nose gear a minimum of two more times to make sure all parts of the nose gear operate freely.

 S 864-046

 (11)
 Move the control lever for the landing gear to the DN position to extend the gear.

 S 494-047

 (12)
 Install the ground lockpin in the nose gear (AMM 09-11-00/201).

 S 864-048

 (13)
 Lower the airplane with jacks and remove the jacks (AMM 07-11-02/201).

 (14)
 Remove the hydraulic pressure from System No. 1 (AMM 29-11-00/201).

 S 864-049
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 NOSE WHEEL WELL AFT DOOR OPERATOR - INSPECTION/CHECK
____________________________________________________
 1.  General_______
 A.  This procedure contains the task to do the inspection/check of the aft door operator.
 B.  The procedure does not include instructions for access, removal, or replacement of the component after inspection of worn areas. Refer to the Aft Door Operator - Removal/Installation for instructions to do these tasks.
 TASK 32-22-04-206-001
 2.  Aft Door Operator Inspection/Check__________________________________
 A.  Standard Tools and Equipment
 (1)  
Micrometers, to measure internally and externally

 B.  
References

 (1)  
AMM 20-11-01/401, Bearings and Bushings

 (2)  
AMM 32-22-04/401, Aft Nose Wheel Well Door Operator

 C.  
Access

 (1)  
Location Zone
 713 Nose Landing Gear Door, Aft, LH
 714 Nose Landing Gear Door, Aft, RH

 D.  
Procedure

 S 026-005
 (1)  
Remove the aft door operator (AMM 32-22-04/401).

 S 226-006

 (2)  
Examine the aft door operator (Fig. 601).

 (a)  
Remove the parts to be examined.

 (b)  
Measure the dimensions of these parts.

 (c)  
Compare the part dimensions with the limit dimensions.

 (d)  
If the part dimension is out of tolerance, replace the part (AMM 20-11-01/401).

 (e)  
Install all the parts removed to do the inspection/check.

 (3)  
Install the aft door operator (AMM 32-22-04/401).

 S 436-002
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A
747-400
MAINTENANCE MANUAL

SEE  A 
FWD  SEE  C 
DRIVE CRANK 
SEE  B  OPERATOR ROD AFT DOOR 
SEE  D 
SEE  E  GEAR DOOR AFT NOSE 
SEE  F  SEE  G 
NOTE:____  TRUNNION NOSE GEAR RIGHT SIDE SIMILAR. LEFT SIDE SHOWN  A  FWD 

Nose Wheel Well Aft Door Operator Wear Limits
Figure 601 (Sheet 1)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

Nose Wheel Well Aft Door Operator Wear Limits
Figure 601 (Sheet 2)

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