(3)  
Extend the gear.

 S 864-040
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 (4)  S 494-041Install the ground locks in the nose landing gear (AMM 09-11-00/201).
 (5)  S 864-042Lower the nose of the airplane with the jacks and remove the jacks (AMM 07-11-02/201).
 (6)  S 714-043Do a check on the operation of the glide slope antenna (AMM 34-31-00/501).

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747-400 MAINTENANCE MANUAL
 AFT NOSE WHEEL WELL DOORS - INSPECTION/CHECK
____________________________________________
 1.  General_______
 A.  This procedure has a task to examine the fit of the mechanical connections for the aft doors of the nose landing gear. These connections include the door hinges and the operator rod connections.
 B.  To do this procedure, you must remove the aft doors from the wheel well for the nose landing gear.
 TASK 32-22-02-206-001
 2.  Aft Nose Wheel Well Door Inspection (Fig. 601)___________________________________
 A.  Standard Tools and Equipment
 (1)  
Micrometers, inner and outer

 B.  
References

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

 (2)  
32-22-02/401, Aft Nose Wheel Well Doors

 (3)  
IPC 32-22-02 Fig. 1

 C.  
Access

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

 D.  
Procedure

 S 026-003
 (1)  
Do this task: "Aft Nose Wheel Well Doors Removal" (Ref 32-22-02/401).

 S 216-006

 (2)  
Examine the hinges and the operator rods for corrosion and damage.

 S 226-004

 (3)  
Examine the fit of the operator rods and the hinges.

 (a)  
Measure the parts at the locations shown in figure 601.

 (b)  
Compare the measured dimensions to the wear limits on figure

 601.

 (c)  
If a part is not in tolerance, replace the part if you cannot repair it.

 S 426-005
 (4)  Do this task: "Aft Nose Wheel Well Doors Installation" (Ref 32-22-02/401).
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747-400
MAINTENANCE MANUAL

BELLCRANK 
SEE A 
DRIVE CRANK 
AFT DOOR STOPS 
WHEEL WELL DOOR 
NOSE GEAR TRUNNION 
SEE  B 
WHEEL 
OPERATOR ROD  WELL DOOR 

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

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747-400
MAINTENANCE MANUAL

1. BEARING/BOLT
WHEEL WELL
2. BUSHING/BOLT

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

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