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A
747-400
MAINTENANCE MANUAL
1 NO. INDEX ROD END PART NAME DIM. ID 0.25050.2495 (cm)(cm) DIAMETER DESIGN LIMITS INCHES MAXIMUMMINIMUM INCHES (0.6337) (0.6363) 0.2535 (cm) WEAR LIMITS WEAR INCHES DIMENSION PERMITTED (0.6439) 0.004 (cm) INCHES CLEARANCE DIAMETER MAXIMUM X PART REPLACE WORN REPAIR WORN PART INSTR REPAIR
BOLT OD 0.24950.2485 (0.6312) (0.6337) 0.2475 (0.6287) (0.010) X
2 BOLT LEVER SUMMING ID OD 0.2505 0.2495 0.2495 0.2485 (0.6312) (0.6337) (0.6337) (0.6363) 0.2535 0.2475 (0.6287) (0.6439) 0.004 (0.010) X
X
3 BOLT ROD END ID OD 0.2505 0.2495 0.2495 0.2485 (0.6337) (0.6312) (0.6337) (0.6363) 0.2535 0.2475 (0.6287) (0.6439) 0.004 (0.010) X
X
Flap Control Module Wear Limits
Figure 601 (Sheet 3)
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L34019
A
747-400 MAINTENANCE MANUAL
FLAP TORQUE TUBE - REMOVAL/INSTALLATION
_______________________________________
1. General
_______
A. There are two tasks in this procedure. There is one task for the removal and one task for the installation of a flap torque tube. The procedure has these parts:
(1)
The installation of the support equipment
(2)
The removal of the torque tubes
(3)
The replacement of the air sealer
(4)
The installation of the torque tube
(5)
An inspection of the torque tube installation
(6)
The retraction of the flaps
(7)
The removal of the support equipment.
TASK 27-51-20-004-001
2. Flap Torque Tube Removal
________________________
A. Special Tools and Equipment
(1)
24ME65B00116 Inboard TE Flap Lock (2 necessary per flap)
(2)
23ME65B00116 Outboard TE Flap Lock (2 necessary per flap)
B.
References
(1)
24-22-00/201, Manual Control
(2)
27-51-00/201, Trailing Edge Flap System
(3)
27-51-20/601, Flap Torque Tube
(4)
29-11-00/201, Main Hydraulic Supply System
(5)
32-00-30/201, Landing Gear Door Locks
(6)
IPC 27-51-60, Fig. 1
C.
Access
(1)
Location Zone 135 Wing Landing Gear Wheel Well, LH 136 Wing Landing Gear Wheel Well, RH 572 Landing Gear Support Beam and Rear Spar to
Trailing Edge, LH 672 Landing Gear Support Beam and Rear Spar to
Trailing Edge, RH 581 Rear Spar to Trailing Edge, LH 681 Rear Spar to Trailing Edge, RH
D. Prepare for the Removal
S 864-043
(1) Supply electrical power (Ref 24-22-00/201).
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747-400 MAINTENANCE MANUAL
S 864-005
(2)
Make sure that the landing gear ground locks are installed. S 494-006
PERSONS AND DAMAGE TO EQUIPMENT.
(3)
Install the door locks on the doors for the body landing gear (Ref 32-00-30/201).
S 864-002
(4)
Pressurize hydraulic systems No. 1 and 4 (Ref 29-11-00/201).
WARNING:_______ CAREFULLY DO THE SPECIFIED TASK 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
S 864-044
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
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