(2)  
The installation of the ground release handle for the landing gear doors.

 TASK 32-36-03-004-001
 2. Removal of the Ground Release Handle for the Landing Gear Doors
_______________________________________________________________
 A. Equipment
 (1)  
G12001-15 - Rig Pin (0.309 to 0.311 - inch diameter) 4 inches in length

 B.
References

 (1)  
09-11-00/201, Towing

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

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

 (4)  
IPC 32-35-03 Fig. 1

 C.
Access

 (1)  
Location Zones
 137 Body Landing Gear Wheel Well, LH
 138 Wing Landing Gear Wheel Well, RH

 D.
Prepare for the Removal

 S 494-002
 (1)  Make sure that the ground locks are installed on the landing gear (Ref 09-11-00/201).
 S 864-003
 WARNING: MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE DOOR
_______ OPERATION PATH. THE DOORS MOVE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  Move the ground release handle for the landing gear doors to the "Doors Open" position. This will open the doors for the main landing gear.
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 ALL  ú ú 01 Page 401 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 034-004
 (3)  
Disconnect the operator rods for the wing and body gear doors (Ref 32-00-30/201).

 S 864-005

 (4)  
Pressurize hydraulic system No. 1 and No. 4 (Ref 29-11-00/201).

 S 864-006

 (5)
Move the ground release handle to the "Doors Closed" position.

 S 864-007

 (6)  
Remove the pressure from hydraulic systems No. 1 and No. 4 (Ref 29-11-00/201).

 S 714-008

 (7)  
Make sure that the actuators for the wing gear doors are in the "Doors Closed" position.

 S 864-009

 (8)  
Put the handle in the "Unlocked" position.

 S 494-010

 (9)  
Install the pins, AE/GD-3 (LH) or AE/GD-4 (RH) in the ground release handle.

 S 494-022

 (10)
 Install the rig pins AE/GD-5 (LH) or AE/GD-6 (RH) in the bus quadrant.

 E.
Remove the Ground Release Handle (Fig. 401)

 S 034-023
 (1)  
Loosen the turnbuckles on cables GDR7A and GDR7B (GDR8A and GDR8B right- hand).

 S 034-024

 (2)  
Remove the cotter pins and disconnect the cables GDR7A and GDR7B (GDR8A and GDR8B right-hand) from the handle mechanism.

 S 024-025

 (3)
Remove the bolts that hold the handle and remove the handle.

 TASK 32-36-03-404-012
 3. Installation of the Ground Release Handle for the Landing Gear Doors
____________________________________________________________________
 A. Equipment
 (1)  G12001-15 - Rig Pin (0.309 to 0.311 - inch diameter) 4 inches in length
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-36-03
 ALL  ú ú 01 Page 402 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

COTTER PIN (2 LOCATIONS)
GROUND RELEASE MECHANISM
SEE A
RIG PIN
AE/GD-5 (LEFT SIDE)
AE/GD-6 (RIGHT SIDE)

BUS QUADRANT
CABLE
GDR7B (LEFT SIDE)
GDR8B (RIGHT SIDE)

CABLE
GDR7A (LEFT SIDE)
GDR8A (RIGHT SIDE)

GROUND RELEASE MECHANISM
A
HANDLE QUADRANT
A-A
BOLT (4 LOCATIONS)
QUADRANT
A
LATCH
TRIGGER RELEASE ROLLER
A

RIG PIN
AE/GD-3 (LEFT SIDE)
AE/GD-4 (RIGHT SIDE)

BODY GEAR
STRUT DOOR

Installation of Ground Release Mechanism for the Doors
Figure 401

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