-
lubricate the LE slat power drive unit (PDU) gears

 -
lubricate the LE slat power drive unit (PDU) control rod.

 TASK 12-21-08-643-029
 2.  Lubricate the Torque Tube Couplings___________________________________
 A.  Equipment
 (1)  
Trailing Edge Flap Power Drive Unit Lock - B27008-1

 (2)  
Circuit Breaker Lockout Clip
 (Commercially Available)

 (3)  
LE Slat Drive Lock Set - B27020-31

 (Includes CB Locks B27020-25 and B27065-1. Valve Locks B27020-32 or B27077-1 are not used in this procedure)
 B.  Consumable Materials
 (1)  
D00014 Grease - MIL-G-21164 (Recommended)

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

 C.  References
 (1)  
06-44-00/201, Wing Access Doors and Panels

 (2)  
24-22-00/201, Electrical Power - Control

 (3)  
AMM 27-81-00/201, LE Slat System - Maintenance Practices

 (4)  
29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems

 (5)  
32-00-15/201, Landing Gear Door Locks

 (6)  
32-00-20/201, Landing Gear Downlocks

 (7)  
78-31-00/201, Thrust Reverser System

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 12-21-08
 ALL  ú ú 01 Page 301 ú Sep 28/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL

 D. Access
 (1)  Location Zones 193/194 Wing to Body - Forward Lower Half 211/212 Control Cabin 510/610 Wing Leading Edge - Forward of Front Spar and Inboard
 of Nacelle Strut 520/620 Wing Leading Edge - Forward of Front Spar and
 Outboard of Nacelle Strut 710 Nose Landing gear and Doors 715/716 Nose landing Gear Wheel Well 730/740 Left and Right Main Landing Gears and Doors 732/742 Main Landing Gear Wheel Well 821 Forward Cargo Compartment
 (2)  Access Panels 511CB or 193BL LE Slat Power Drive Unit and Hydraulics 511DB/611DB Main and Auxiliary Track Roller Lubrication 511FB/611FB Main and Auxiliary Track Roller Lubrication 511HB/611HB Main and Auxiliary Track Roller Lubrication 521AB/621AB LE Slat Drive Mechanism, Tracks, Rollers 521CB/621CB LE Slat Drive Mechanism, Tracks, Rollers 521EB/621EB LE Slat Drive Mechanism, Tracks, Rollers 521GB LE Slat Drive Mechanism, Tracks, Rollers 621HB Main and Auxiliary Track Roller Lubrication 521KB/621KB LE Slat Drive Mechanism, Tracks, Rollers 521MB/621MB LE Slat Drive Mechanism, Tracks, Rollers 521PB/621PB LE Slat Drive Mechanism, Tracks, Rollers 521RB/621RB LE Slat Drive Mechanism, Tracks, Rollers 521UBX/621UBX Wing Nacelle Attach Fitting, Lubrication Points 1251 Forward Cargo Compartment Aft Wall Panels
 E. Prepare for the Lubrication
 S 043-186
 WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURY TO YOU OR DAMAGE TO EQUIPMENT.
 (1)  
Do this procedure: Thrust Reverser Deactivation for Ground
 Maintenance (Ref 78-31-00/201).

 S 843-166

 (2)  
Make sure the trailing edge (TE) flaps and LE slats are fully extended (AMM 27-81-00/201).

 (3)  
Make sure the flap control lever is in the 30-unit detent.

 (4)  
Install a DO-NOT-OPERATE tag the flap control lever.

 S 843-167
 S 933-168
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 302 ú Sep 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 843-169
 (5)  Make sure the downlocks are installed on the nose and main landing gear (Ref 32-00-20/201).
 S 843-170
 WARNING:_______INSTALL THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (6)  
Open the doors for the main landing gear and install the door locks (AMM 32-00-15/201).

 S 863-171

 (7)  
　
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