27-61-06
 ALL  ú ú 01 Page 211 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 SPOILER DIFFERENTIAL MECHANISM QUADRANT - MAINTENANCE PRACTICES
_______________________________________________________________
 1.  General_______
 A.  There are four tasks in this procedure. There is one task for the removal and one task for the installation of a spoiler differential mechanism quadrant. There is an inspection and a task to repair a quadrant. This procedure applies to all of the spoiler quadrants.
 TASK 27-61-07-002-001
 2.  Quadrant Removal________________
 A.  Special Tools and Equipment
 (1)  
G12001-50 Rig Pin Kit

 B.  
References

 (1)  
27-61-03/201, Spoiler Differential Mechanism

 (2)  
29-11-00/201, Main Hydraulic Supply System

 (3)  
32-00-30/201, Landing Gear Door Locks

 (4)  
IPC 27-61-20, Fig. 1

 C.  
Access

 (1)  
Location Zone
 135 Wing Landing Gear Wheel Well, LH
 136 Wing Landing Gear Wheel Well, RH

 D.  
Prepare for the Removal (Fig. 201)

 S 862-002
 (1) Make sure that the landing gear ground locks are installed.
 S 492-003
 WARNING: CAREFULLY DO THE SPECIFIED TASK TO INSTALL THE DOOR LOCKS ON
_______ THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2)  Install the door locks on the doors for the wing landing gear (Ref 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-61-07
 ALL  ú ú 01 Page 201 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 862-029
 WARNING: MOVE ALL PERSONS AND EQUIPMENT AWAY FROM THE FLIGHT CONTROLS
_______ BEFORE YOU PRESSURIZE THE HYDRAULIC SYSTEM. THE FLIGHT CONTROLS CAN MOVE QUICKLY AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (3)  
Pressurize the hydraulic system (Ref 29-11-00/201).

 S 862-005

 (4)  
Put the captain's and the first officer's control wheels in the neutral position.

 S 862-027

 (5)  
Adjust the trim and feel system until you can install the rig pin A/S-2.

 S 862-006

 (6)  
Put the speed brake control lever in the DOWN position.

 S 862-007

 (7)  
Release the pressure in the hydraulic system (Ref 29-11-00/201).

 E.
Remove the Quadrant (Fig. 201)

 S 012-008
 (1)
Remove the spoiler differential mechanism (Ref 27-61-03/201).

 S 022-009

 (2)  
Remove the quadrant.

 (a)  
Loosen the cables at the turnbuckles which are nearest to the quadrant.

 (b)  
Remove the cables from the quadrant.

 (c)  
Remove the nut and the spacer from the quadrant

 (d)  
Remove the quadrant from the rig beam.

 TASK 27-61-07-202-010
 3.  Quadrant Inspection___________________
 A. Standard Tools and Equipment
 (1)  
Micrometer - 0 to 1 inch(0-25mm)

 (2)  
Micrometer - 1 to 2 inch(25-50mm), To Measure Inner Dimensions

 (3)  
Micrometer - 1 to 2 inch(25-50mm), To Measure Outer Dimensions

 (4)  
Vernier caliper

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-61-07
 ALL  ú ú 01 Page 202 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

SEE  A 
BACR15BB4AD SHEAR JOINT USE ONLY .0625 DIA INSP HOLE MS20470AD4 OPT TO 
WS2A CABLE  WS1B CABLE  RIG PIN A/S-14 A MECHANISM (2 LOCATIONS) QUADRANT WS2B FOIL MARKER ALUMINUM SPOILER DIFFERENTIAL CABLE (4 LOCATIONS)  A RIG RIG PIN A/S-2 PIN A/S-16 B ALUMINUM FOIL MARKER 
　
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