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A
747-400
MAINTENANCE MANUAL

AFT ARM  BEAM WALKING 
SHOCK STRUT  FORWARD ARM 
FWD  6 POINTS  3  (6 LOCATIONS) WALKING BEAM BMS 3-33 ZERK 
B 
SPINDLE  SIDE STRUT ZERK 
STRUCTURE ASSEMBLY FITTING ZERK  4 (4 LOCATIONS) BMS 3-33 
(1 LOCATION) BMS 3-33 
STRUT SIDE 
5 POINTS  FWD 
4 3  THIS IS A GROUP OF FOUR FITTINGS. THERE IS A LOCATION ON THE AFT ARM OF THE WALKING BEAM (NOT SHOWN).  C 

Wing Gear Beam Pivot Points, Walking Beam Supports and Trunnion Bearings Lubrication
Figure 319 (Sheet 2)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
G09090
A
747-400
MAINTENANCE MANUAL

TRUNNION BEARING 
ZERK 
TRUNNION JOURNAL 
SUPPORT  BMS 3-33 
ZERK  BEAM 
(1 LOCATION) 
BMS 3-33  5 
(1 LOCATION) 
6 

AFT TRUNNION BEARING
TRUNNION
2 POINTS
D
4
THIS IS A GROUP OF FOUR FITTINGS.
5
LOWER THE FLAPS TO GET ACCESS.
6
MAKE SURE THE GREASE FLOWS FREELY THROUGH THE LUBRICATION HOLES. IF THE HOLES ARE CLOGGED, CLEAN THE HOLES BEFORE YOU LUBRICATE THE ASSEMBLY. USE ONLY BMS 3-33 GREASE.
BEARING
BEARING ZERK
HOUSING
BMS 3-33
(1 LOCATION)
TRUNNION
FORK
A
A
DRAG BRACE ZERK
TRUNNION
BMS 3-33
DRAG BRACE FWD
(4 LOCATIONS) 4
5 POINTS
E
TRUNNION FORK
ZERK

BMS 3-33
(3 LOCATIONS)

TRUNNION FORK TRUNNION
TRUNNION FORK
ZERK

BMS 3-33
(3 LOCATIONS)

6 POINTS A-A
Wing Gear Beam Pivot Points, Walking Beam Supports and Trunnion Bearings Lubrication
Figure 319 (Sheet 3)

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A
747-400 MAINTENANCE MANUAL
 DOORS - SERVICING (LUBRICATION)
_______________________________
 1.  General_______
 A.  This procedure has instruction to do these tasks:
 (1)  
The main entry doors lubrication

 (2)  
The crew compartment overhead hatch lubrication

 (3)  
The forward electronic door lubrication

 (4)  
The center electronic door lubrication

 (5)  
The air-conditioning doors lubrication

 (6)  
The auxiliary power unit door lubrication

 (7)  
The main deck electronic door lubrication

 (8)  
The bulk cargo door lubrication

 (9)  
The forward/aft cargo doors lubrication

 (10)
 The side cargo door lubrication

 (11)
 The nose cargo door lubrication

 (12)
 The upper deck crew service door lubrication

 B.  See Fig. 301 for the door index. The door index shows the door locations on the airplane. Look at the number of the Figure below the name of the door for details on a specified door.
 C.  Grease nipples are known as ZERK fittings in this procedure. You must use a grease gun to lubricate the ZERK and flush-type fittings. To get to some of the ZERK and flush-type fittings, you must use a flexible hose. You must attach a 90 degrees fitting on the grease gun to get at other ZERK and flush-type fittings.
 TASK 12-21-04-603-001
 2.  Main Entry Doors Lubrication____________________________
　
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