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A
747-400
MAINTENANCE MANUAL

(1 LOCATION)

AFT TRUNNION BEARING

1 POINT

B-B

CLEAN THE AREA AND APPLY A CONTINUOUS FILLET OF GREASE AROUND THE FORWARD EDGE OF THE INNER RACE.
Wing Landing Gear Brace and Support Lubrication Figure 312 (Sheet 3)
G37353
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
TRUNNION SLEEVE

FORWARD EDGE OF THE INNER RACE.
CLEAN THE AREA AND APPLY A NEW LAYER OF CORROSION PREVENTIVE COMPOUND.

CLEAN THE AREA AND APPLY A NEW LAYER OF APPLY A CONTINUOUS FULL FILLET AT THE CORROSION PREVENTIVE COMPOUND. APPLY A THICK END OF THE TRUNNION SLEEVE. COAT (0.10 INCH MINIMUM) TO COMPLETELY SEAL
THE NUT, BOLT END, WASHER, AND THE ADJACENTCLEAN THE AREA AND APPLY A NEW LAYER OF SLEEVE SURFACES. DO NOT GET THE COMPOUND ON
CORROSION PREVENTIVE COMPOUND. APPLY A
THE BEAD OF GREASE AT THE FORWARD EDGE OF
THICK LAYER (0.10 INCH MINIMUM) TO THE FULL
THE INNER RACE.
INNER DIAMETER OF THE TRUNNION JOURNAL. ALSO, MAKE SURE YOU APPLY A THICK LAYER TO

APPLY BMS 3-27 TO THE BOLT SHANK AND BOLT THE BOLT HEADS. MAKE THE COMPOUND SURFACE
THREADS. REMOVE THE UNWANTED BMS 3-27 WITH SMOOTH AND CONTINUE THE COMPOUND SURFACE
A CLEAN CLOTH BEFORE YOU APPLY MIL-C-11796. ON THE INNER DIAMETER OF THE TRUNNION SLEEVE.
DO THESE INTERNAL LUBRICATION POINTS ONLY WHEN YOU DO THE GEAR OVERHAUL OR DISASSEMBLY
Wing Landing Gear Brace and Support Lubrication
Figure 312 (Sheet 4)

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A

747-400
MAINTENANCE MANUAL

SEE E
SEE A
SEE  I 
SEE  D 
SEE  F 
SEE  H 
SEE  G 
SEE  J 
1 
SEE  C  LOWER TORSION 
LINK 
ZERK 
BMS 3-33 
(2 LOCATIONS) 
2 POINTS 

1 ONE MORE LUBE POINT IS ON THE OPPOSITE SIDE (NOT SHOWN).
Wing Landing Gear Lower End Lubrication Figure 313 (Sheet 1)
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A
747-400 MAINTENANCE MANUAL
SHOCK
SIDE
STRUT DRAG BRACE STRUT
SIDE STRUT
ZERK
BMS 3-33 SEE B
(3 LOCATIONS)
DRAG BRACE SIDE STRUT
BUSHING ZERK
1
BMS 3-33
2 (1 LOCATION) 1
UPLOCK (4 LOCATIONS)
SIDE STRUT PIN
FWD
BUSHING UPLOCK PIN
SHOCK

ZERK
STRUT BMS 3-33
2 (4 LOCATIONS)
(2 LOCATIONS)
TRUCK POSITIONING ACTUATOR 14 POINTS
A
DRAG BRACE
ZERK
BMS 3-33
TORSION LINK WHEEL TRUCK (3 LOCATIONS)
ZERK UPPER ZERK LOWER TORSION
TORSION LINK
LINK
FWD
(1 LOCATION) (1 LOCATION)

BMS 3-33  BMS 3-33
4 POINTS
B
1  ONE MORE LUBE POINT IS ON THE OPPOSITE SIDE (NOT SHOWN).
2  BUSHINGS WITH PAINTED WITNESS LINE (OR EQUIVALENT IDENTIFICATION MARK), DO THESE STEPS:
1 POINT
.  LUBRICATE THE JOINT
.  APPLY BMS 3-23 OR BMS 3-26
COMPOUND, POINT THE SPRAY AROUND C
THE BUSHING FLANGE BETWEEN THE
BUSHING AND THE MATING LUG SURFACE.

.  LUBRICATE THE JOINT AGAIN TO REMOVE
ALL COMPOUND FROM THE JOINT.

Wing Landing Gear Lower End Lubrication
　
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