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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 094-046
(24)
Remove the strap for the drag brace.
H.
Adjust The Trunnion Bearing
S 034-047
(1)
Remove the retaining nut lockplate (11), the trunnion bearing locknut (8), and the lockwasher (7) from the aft trunnion bearing (Fig. 402).
S 434-048
(2)
Tighten the bearing adjusting ring (14) with your hand until it is fully installed.
S 434-049
(3)
Tighten the bearing retaining nut (6) 900 to 1200 pound-inches (Fig. 401).
(a)
Apply a fillet sealant of BMS 5-95 to the circumference of bearing retaining nut (6).
S 354-050
(4)
To install the lockbolts (9) do these steps:
(a)
AIRPLANES WITH THREE LOCKBOLT HOLES IN HOUSING; Do these steps: 1) Select the best two hole locations in the housing that
allows a minimum distance of 0.54 inch between centerline of spanner slots of retaining nut and centerline of lockbolt.
NOTE: If holes exist in retaining nut the new holes will
____ be a minimum of two diameters away from old hiles.
2) Apply primer to hole not used and fill with BMS 5-26.
(b) Drill the retaining nut (6) through the hole (10) in the housing and install the lockbolt (9).
NOTE: If the retaining nut (6) has holes drilled, drill the
____ new holes approximately 2-diameter distance away from the old holes. The new holes also have 0.54 inch minimum between the lockbolt and the slot centerlines of the retaining nut.
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32-11-19
ALL ú ú 01 Page 410 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
SEE A
SPHERICAL BEARING 1. RACE BEARING OUTER2. 25. KEY LOCKWASHER BEARING RETAINER BOLT (EXAMPLE 5 LOCATIONS) 7.
TRUNNION BEARING LOCKNUT 8.
SEALS CHANNELS GREASE BOLT (4 LOCATIONS) RETAINING NUT LOCKPLATE 9.
OUTER SLEEVE TRUNNION15. LOCKPLATE RETAINING NUT11.
GREASE FITTING
RING ADJUSTING BEARING 1 14. RETAINER BEARING13. BOLT (4 LOCATIONS)
A
1 LUBRICATE WITH BMS 3-33 GREASE UNTIL NO BMS 3-27 OF THE TRUNNION SLEEVE. WIPE THE BMS 3-27 FROM THE COMES THROUGH THE GREASE VENT ON THE OUTER DIAMETER OUTER SLEEVE WITH A CLEAN CLOTH.
Wing Landing Gear Aft Bearing Details
Figure 402
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32-11-19
ALL ú ú 01 Page 411 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
TRUNNION SLEEVE
7 POINTS
LOWER THE FLAPS TO GET ACCESS
CLEAN THE AREA AND APPLY A NEW CONTINUOUS BEAD OF GREASE AROUND THE 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 SLEEVE SURFACES. DO NOT GET THE COMPOUND ON
OF CORROSION PREVENTIVE COMPOUND.
THE BEAD OF GREASE AT THE FORWARD EDGE OF
APPLY A THICK LAYER (0.10 INCH MINIMUM)
THE INNER RACE
TO THE FULL INNER DIAMETER OF THE TRUNNION JOURNAL. ALSO, MAKE SURE YOU APPLY A THICK LAYER TO THE BOLT HEADS. MAKE THE COMPOUND SURFACE SMOOTH AND CONTINUE THE COMPOUND SURFACE ON THE INNER DIAMETER OF THE TRUNNION SLEEVE
Wing Gear Aft Bearing Lubrication
Figure 403
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