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

 D.
Procedure

 S 864-006
 (1)  
Make sure the green indicator pin (2) dose not retract into the rotary snubber housing.

 S 714-014

 (2)  
Do a check of the fluid quantity for the rotary snubber, if it is necessary (Ref 52-11-10/601).

 S 644-007

 (3)  
Lubricate the splines on the rotary snubber shaft (9) with grease just before you install it.

 S 424-008

 (4)  
Install the rotary snubber (10).

 (a)  
Assemble the splined sleeve on the rotary snubber shaft (9).

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MAINTENANCE MANUAL

 (b) (c) (d)  Install the rotary snubber (10) and the telescopic sleeve (7) to the torque tube (11).Connect the snubber arm (5) to the structure link (3).Move the telescopic sleeve (7) to the link shaft (6) and install the clamp bolt (8).
 (5)  S 414-009Install the maintenance access panel (1).
 (6)  S 864-010Make sure the mode selector lever is in the MANUAL position.
 (7)  S 714-011Open the door and do a check for the snubbing at the end of the travel.
 (8)  S 864-012Close and latch the door.

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747-400 MAINTENANCE MANUAL
 BODY TORQUE TUBE ROTARY SNUBBER (DOOR NO. 1) -
____________________________________________ INSPECTION/CHECK
________________
 1.  General_______
 A.  This procedure contains one task. This task does a check of the quantity of fluid in the rotary snubber on the body torque tube.
 B.  A rotary snubber is installed on the body torque tube of each main entry door. The rotary snubber contains a silicone fluid which is pressurized.
 C.  A green indicator pin on the housing of the rotary snubber extends out to show the quantity of the fluid.
 D.  The indicator pin retracts into the housing of the rotary snubber when the quantity of fluid decreases.
 E.  The length that the indicator pin extends out of the housing changes with different temperatures.
 TASK 52-11-10-206-001
 2.  Examine the Rotary Snubber (Fig. 601)__________________________
 A.  References
 (1)  
IPC 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 866-002
 (1)  
Close the main entry door.

 (2)  
Remove the maintenance access panel, forward of the door.

 (3)  
Measure the length green indicator pin (Fig. 601).

 S 016-003
 S 226-006
 NOTE: The fluid in the rotary snubber is equivalent to the compound
____ used in the area of the torque tube. Leakage is not easy to see. You must use the indicator pin to see if the quantity of fluid decreases.
 (a)  The rotary snubber is serviceable if the extension of the indicator pin is the same as shown on Fig. 601.
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747-400
MAINTENANCE MANUAL

MAIN ENTRY DOOR
Body Torque Tube Rotary Snubber Inspection (Door No. 1)
Figure 601
　
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