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747-400 MAINTENANCE MANUAL
(5) S 424-015If needed, turn the tie rod until the bolt 5. with washer 4. can be easily slipped into the lower end fitting hole in the tie rod and the fitting hole on the truss ladder. (a) Make sure the tie rod end threads are visible through the inspection holes on each end of the tie rod tube to ensure balanced thread engagement.
(6) S 424-016Install the washer 4. and nut 3. on the bolt 5. on the lower end of tie rod.
(7) S 424-020Tighten the nut 3. on the bolt 5. on the upper and and lower ends of the tie rod.
S 424-017
CAUTION: INSTALL THE LOCKWIRE TO PREVENT ROTATION OF THE TIE ROD AND
_______ KEEP THE CORRECT LENGTH OF THE TIE ROD DURING OPERATION OF THE AIRPLANE.
(8)
Install the lockwire 6. on the upper end of the tie rod.
S 424-018
(9)
Replace the ceiling panels (AMM 25-22-01/401).
S 414-019
(10)
Open and close the center stowage bins adjacent to the installed tie rod.
(a) Make sure the stowage bins operate smoothly and without binding, and lock securely.
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747-400
MAINTENANCE MANUAL
CENTER OVERHEAD STOWAGE SUPPORT (3 LOCATIONS)
SEE A
CSEE POINTS ATTACHMENT UPPER ATTACHMENT UPPER POINT
SEE C
TIE RODS 1. STOWAGE SUPPORT 1. STOWAGE SUPPORT TIE ROD
POINT ATTACHMENT LOWER DRIP SHIELD
SEE B ATTACHMENT POINTS LOWER SUPPORT TRUSS LADDER 2. STOWAGE BIN
SEE B
CENTER OVERHEAD STOWAGE SUPPORT (EXAMPLE)
A
Center Overhead Stowage Support Tie Rod Figure 401 (Sheet 1)
K37933
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747-400
MAINTENANCE MANUAL
UPPER ATTACHMENT POINT
(EXAMPLE)
Center Overhead Stowage Support Tie Rod
Figure 401 (Sheet 2)
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2.
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747-400 MAINTENANCE MANUAL
LANDING GEAR ATTACH FITTINGS - DESCRIPTION AND OPERATION
________________________________________________________
General
_______
A. The nose, wing main, and body main landing gears are attached to fittings
or reinforced structure in the wheel well areas.Nose Landing Gear Attach Fittings (Fig. 1)
_________________________________
A. The nose landing gear attach fittings consist of a trunnion support fitting, the drag strut support fitting, and the actuator support.
B. The trunnion support fitting is a T-shaped, machined-aluminum forging with a recess for the trunnion pins. Each trunnion pin is anchored to its support fitting by a trunnion cap with two large tension bolts. The fittings are located 10 inches forward of the aft wall and on the inside sidewalls of the wheel well (Detail A).
C. The drag strut support fitting and the actuator support fitting are located at the top of the wheel well and tied into the bulkhead that separates the forward and aft well at body station 340. Both are machined aluminum forgings. The drag strut support is centered at the top of the wheel well and the actuator is alongside the drag strut at RBL 11.00 (Detail B).
Wing Main Landing Gear Attach Fittings (Fig. 2)
______________________________________
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