(2)  
AMM 27-51-24/401, Inboard Foreflap Carriage and Toggle

 (3)  
AMM 27-51-33/401, Transmission

 (4)  
AMM 57-22-01/501, Fixed Trailing Edge Upper Panel

 (5)  
IPC 57-22-53, Fig. 5

 C.  
Access

 (1)  
Location Zone 561 Inboard Flap Track Fairing, Inboard Flap, LH (Track No. 4)

 661  Inboard Flap Track Fairing, Inboard Flap, RH (Track No. 5)
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747-400 MAINTENANCE MANUAL
 D. Prepare for the Removal
 NOTE: The flap track weighs approximately 615 pounds.
____ S 014-002
 (1)  Remove the inboard flap (AMM 27-51-01/401).
 NOTE: You will remove the aft roller support and the movable flap
____
 fairings during the inboard flap removal.

 S 014-003
 (2)
Remove the inboard foreflap carriage and toggle (AMM 27-51-24/401).

 S 014-004

 (3)  
Remove the flap transmission (AMM 27-51-33/401).

 S 494-023

 (4)  
Attach a load positioner to a hoist above the wing.

 S 494-024

 (5)  
Prepare the sling for the removal of flap track 4 (Fig. 402).

 (a)  
Move the balance weight to the left side of the sling.

 (b)  
Attach the load positioner to the left side of the lift lug on the sling.

 S 494-025
 (6)  
Prepare the sling for the removal of flap track 5.

 (a)  
Move the balance weight to the right side of the sling.

 (b)  
Attach the load positioner to the right side of the lift lug on the sling.

 S 494-026
 (7)  
Lower the sling to the position to attach the flap track.

 S 494-027

 (8)  
Turn the hand knob at the bottom of the sling to adjust the clamp for the width of the flap track.

 S 494-028

 (9)  
Make sure the distance is 84.2 inches (213.9 cm) between the edge of the clamp and the centerline fo the forward hinge of the flap track.

 (10)
 Turn the hand knob to tighten the clamp on the flap track.

 S 494-029
 NOTE: Do not use a tool to tighten the hand knob.
____
 E. Remove the Inboard Flap Inboard Track
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747-400
MAINTENANCE MANUAL

SEE  A 
SEE  C 
SEE  D 
B 
B 
SEE  B 
A 
A  A 
RING SPRING (4 LOCATIONS) 
MOUNTING BOLT 
(4 LOCATIONS)
NUT  NUT 
B 
NUT 
WASHER 
NUT 
BEARING 
PLATE  WASHER 
SELF-ALIGNING  BEARING 
WASHERS  PLATE 
(4 LOCATIONS) 
RING SPRING (4 LOCATIONS)  FLAP TRACK 
RETAINING 
RING 
(4 LOCATIONS) 
RETAINER  WASHER 
(4 LOCATIONS)  (4 LOCATIONS) 
BOLT  BOLT 
A-A 
Inboard Flap Inboard Track Installation 
Figure 401 (Sheet 1) 

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A
747-400
MAINTENANCE MANUAL

C-C
Inboard Flap Inboard Track Installation Figure 401 (Sheet 2)
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