12-21-19
 ALL  ú ú 01 Page 307 ú Feb 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 TRAILING EDGE FLAP SYSTEM - SERVICING (LUBRICATION)
___________________________________________________
 1.  General_______
 A. These are the tasks in this procedure:
 (1)  
A task to lubricate the trailing edge flap mechanisms and fairings.

 (2)  
A task to lubricate the trailing edge flap ballscrews.

 (3)  
A task to lubricate the ring springs on the inboard flap inboard track.

 (4)  
A task to lubricate the trailing edge flap drive system.

 (5)  
A task to lubricate the power drive unit for the trailing edge flaps.

 (6)  
The procedure to fill the oil in the trailing edge flap transmissions is in AMM 12-13-13/301.

 TASK 12-21-20-643-001
 2.  Trailing Edge Flap Mechanism and Fairings Lubrication_____________________________________________________
 A. Consumable Materials
 (1)  
D00633 Grease - BMS 3-33 (recommended)

 (2)  
D00013 Grease - MIL-G-23827 (alternative)

 B. References
 (1)  
AMM 27-51-26/401, Inboard Flap Track Fairings

 (2)  
AMM 27-51-31/401, Outboard Flap Track Fairings

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

 C. Access
 (1)  Location Zone
 (a)  On the left wing: 561 Inboard Flap Track Fairing, Inboard Flap, LH, (Track No. 4) 563 Outboard Flap Track Fairing, Inboard Flap, LH, (Track No. 3) 565 Inboard Flap Track Fairing, Outboard Flap, LH, (Track No. 2) 567 Outboard Flap Track Fairing, Outboard Flap, LH,
 (Track No. 1) 576 Inboard Flap Foreflap, LH 577 Inboard Flap Midflap, LH 578 Inboard Flap Aftflap, LH 581 Rear Spar to Trailing Edge, LH 586 Outboard Flap Foreflap, LH 587 Outboard Flap Midflap, LH 588 Outboard Flap Aftflap, LH
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 12-21-20
 ALL  ú ú 01 Page 301 ú Feb 18/01
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747-400 MAINTENANCE MANUAL
 (b)  On the right wing: 661 Inboard Flap Track Fairing, Inboard Flap, RH, (Track No. 5) 663 Outboard Flap Track Fairing , Inboard Flap, RH, (Track No. 6) 665 Inboard Flap Track Fairing, Outboard Flap, RH, (Track No. 7) 667 Outboard Flap Track Fairing, Outboard Flap, RH,
 (Track No. 8) 676 Inboard Flap Foreflap, RH 677 Inboard Flap Midflap, RH 678 Inboard Flap Aftflap, RH 681 Rear Spar to Trailing Edge, RH 686 Outboard Flap Foreflap, RH 687 Outboard Flap Midflap, RH 688 Outboard Flap Aftflap, RH
 (2)  Access Panel 561AB Movable Flap Track Fairing, Inbd Flaps, LH 563CB Movable Flap Track Fairing, Inbd Flaps, LH 565CB Movable Flap Track Fairing, Outbd Flaps, LH 567CB Movable Flap Track Fairing, Outbd Flaps, LH 572BB Trailing Edge Lwr, LH 572EB Trailing Edge Lwr, LH 577BT Midflap Inboard Trailing Edge Flap Carriage, LH 577ET Midflap Inboard Trailing Edge Flap Carriage, LH 581AB Flap Drive, LH 581EB Flap Drive, LH 581HB Flap Drive, LH 581JB Flap Drive, LH 587DT Midflap Outboard Trailing Edge Flap, LH 587HT Midflap Outboard Trailing Edge Flap, LH 661AB Movable Flap Track Fairing, Inbd Flaps, RH 663CB Movable Flap Track Fairing, Inbd Flaps, RH 665CB Movable Flap Track Fairing, Outbd Flaps, RH 667CB Movable Flap Track Fairing, Outbd Flaps, RH 672BB Trailing Edge Lwr, RH 672EB Trailing Edge Lwr, RH 677BT Midflap Inboard Trailing Edge Flap Carriage , RH 677ET Midflap Inboard Trailing Edge Flap Carriage, RH 681AB Flap Drive, RH 681EB Flap Drive, RH 681HB Flap Drive, RH 681JB Flap Drive, RH 687DT Midflap Outboard Trailing Edge Flap, RH 687HT Midflap Outboard Trailing Edge Flap, RH
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 12-21-20
 ALL  ú ú 01 Page 302 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 D. Procedure
 S 863-002
 (1)  
Do this task to pressurize hydraulic systems No. 1 and 4:
 "Hydraulic System Pressurization" (AMM 29-11-00/201).
　
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