(3)  
Remove the maintenance access panel, forward of the door.

 S 216-035

 (4)  
Examine the door for corrosion (Fig. 601).

 (a)  
Look at the components that follow for cracks, corrosion, loose bolts, and other damage. 1) The operational mechanism for the door 2) The door torque tube 3) The body torque tube

 S 016-034
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A 747-400 MAINTENANCE MANUAL
 4) 5)  All bearingsAll attachments.
 (5)  S 416-039Install the door maintenance access panel, forward of the door.
 (6)  S 416-040Install the lining on the door (AMM 52-11-02/401).

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747-400 MAINTENANCE MANUAL
 BODY TORQUE TUBE ROTARY SNUBBER (DOORS NO. 1) -
____________________________________________ REMOVAL/INSTALLATION
____________________
 1.  General_______
 A.  This procedure contains two tasks. The first is the removal of the rotary snubber on the body torque tube on the No. 1 entry door. The second is the installation of the rotary snubber on the body torque tube on the No. 1 entry door.
 B.  For the removal and installation of the rotary snubber on the door 5, refer to 52-11-17/401.
 TASK 52-11-10-004-001
 2.  Rotary Snubber Removal (Fig. 401)______________________
 A.  References
 (1)  
IPC 52-11-01, 52-11-10

 B.  
Access

 (1)  
Location Zone
 211 Main Deck, Nose to First Door, LH

 (2)  
Access Panel 211AL Panel, Access - Door Maintenance (Door 1, LH) 831L Door - No. 1 Main Entry, LH

 C.  
Procedure

 S 014-002
 (1)  
Remove the maintenance access panel (1) from the external airplane forward of the door.

 (2)  
Close and latch the entry door.

 S 024-004

 (3)  
Remove the rotary snubber (10).

 (a)  
Remove the clamp bolt (8) from the telescopic sleeve (7).

 (b)  
Move the telescopic sleeve (7) to the rotary snubber shaft (9).

 S 864-003
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747-400
MAINTENANCE MANUAL

Door No. 1 Body Torque Tube Rotary Snubber Installation
Figure 401

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D13160
A
747-400
MAINTENANCE MANUAL

 (c)  
Remove the bolt (4) that connects the snubber arm (5) to the structure link (3).

 (d)  
Remove the rotary snubber (10) from the splined shaft.

 TASK 52-11-10-404-005
 3. Rotary Snubber Installation (Fig. 401)
___________________________
 A. Consumable Materials
 (1)  
D00013 - Grease, MIL-G-23827

 B.
References

 (1)  
52-11-10/601, Body Torque Tube Rotary Snubber.

 (2)  
IPC 52-11-01, 52-11-10

 C.
Access

 (1)  
Location Zone
 211 Main Deck, Nose to First Door, LH
　
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