32-22-03
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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
FUSELAGE SKIN
0.02 INCH (OUTSIDE)
A-A
LOWER TEE CHORD
LOWER TEE CHORD
(AFT LEFT SIDE PANEL)
(AFT RIGHT SIDE PANEL)
FORWARD DOORS AFT END
B-B
Nose Wheel Well Forward Door Operator Rods Installation
Figure 401 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400
MAINTENANCE MANUAL
S 864-032
(3)
Make sure that all persons and equipment are clear of the door operation.
S 864-033
(4)
Operate the ground release handle to open the wheel well doors for the nose landing gear (See "Ground Door Release Handle Open Operation").
NOTE: The handle is on the aft and to the right of the wheel well
____ door (which is at the right aft of the nose landing gear).
S 844-005
(5)
Decrease the pressure from hydraulic system No. 1
(AMM 29-11-00/201).
S 034-006
(6)
Disconnect the two rod assemblies from the door fittings.
(a)
If it is necessary, tag the rod assemblies for the left or the right doors before you install.
S 024-007
(7) Remove the rod assemblies from the bellcrank.
TASK 32-22-03-404-008
3. Nose Wheel Well Forward Door Operator Rods Installation (Fig. 401)
_______________________________________________________
A. Standard Tools and Equipment
(1)
Standard wrenches
B.
Consumable Materials
(1)
D00633 Grease -BMS 3-33 (preferred)
(2)
D00013 Grease - MIL-G-23827 (optional)
C.
References
(1)
AMM 29-11-00/201, Main Hydraulic Supply System
(2)
AMM 32-22-03/601, Nose Wheel Well Forward Door Operator Rods
(3)
AIPC 32-22-03 Fig. 2
D.
Access
(1)
Location Zone
713 Nose Landing Gear Door, Aft, LH
714 Nose Landing Gear Door, Aft, RH
E.
Procedure
S 224-009
(1) Examine the worn parts and the fittings from the wear limits (AMM 32-22-03/601).
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A
747-400 MAINTENANCE MANUAL
S 644-010
(2) Lubricate the bolt shank, the threads and the spacer or the bushing
surfaces with grease.
S 424-011
(3) Connect the left and the right operator rods to the bellcrank.
NOTE:____ Do not change the left-hand and right-hand rods. But, you
can install one of the two rod in the forward or the aft
clevis of the bellcrank
S 864-012
(4)
Pressurize the hydraulic system 1 (AMM 29-11-00/201).
S 494-031
(5)
Install the ground locks in all landing gear (AMM 09-11-00/201).
S 494-030
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW 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 OR DAMAGE TO EQUIPMENT.
(6)
Do this task: "Installation of the Door Locks on the Wing Landing Gear" (AMM 32-00-30/201).
S 494-038
(7)
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
S 864-014
(8)
Move the control handle of the landing gear to the DN position.
S 864-015
(9)
Move the release handle to the closed position to retract the operator rods (See "Ground Door Release Handle Close Operation").
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