757 MAINTENANCE MANUAL
 E. Prepare for the Lubrication
 S 043-208
 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 863-209

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

 S 863-210

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

 S 863-211

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

 S 843-212

 (5)  
Make sure the landing gear downlocks for the nose and main landing gear are installed (Ref 32-00-20/201).

 S 483-213
 WARNING:_______USE AMM 32-00-15/201 TO 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 (Ref 32-00-15/201).

 S 863-214

 (7)  
Remove the pressure from the left hydraulic system
 (Ref 29-11-00/201).

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757 MAINTENANCE MANUAL
 S 483-215
 (8)  
Install a PDU lock in the TE flap PDU at the forward bulkhead of the left main gear wheel well (Fig. 307).

 S 863-216

 (9)  
Open these circuit breakers on the overhead panel, P11, and attach DO-NOT-CLOSE tags:

 (a)  
11B18, WARN ELEX B

 (b)  
11D31, HYDRAULICS PTU CONT

 (c)  
11J33, WARN ELEX A

 S 863-217
 (10) Open this circuit breaker on the P11 panel and install circuit breaker lock (B27065-1):
 (a)  11H23, FLAP/SLAT ALTN DR SHUTOFF ARM
 S 863-218
 (11) Open these circuit breakers on the main power distribution panel, P6, and install circuit breaker locks (B27020-25):
 (a)  
6D20, ALTN SLAT PWR

 (b)  
6D23, ALTN FLAP PWR

 S 013-219
 (12) Remove the access panels that follow (Ref 06-44-00/201):
 (a)  191CL/192CR LE Slat Drive Angle Gearbox
 S 863-016
 (13) Put the manual override lever on the bypass valve of the LE slat (left wing body fairing forward of wing) in bypass (POS 1).
 F. Lubricate the Internal Gears of the Angle Gearbox (Fig. 305)
 S 013-041
 (1)  
Remove the drain covers to get access to the internal gears.

 S 643-042

 (2)  
Turn the torque tubes for the LE slat by hand and fill the gear teeth with grease by hand.

 NOTE: Turn the torque tube approximately 1 turn to make sure you
____ applied a sufficient quantity of grease to the gear teeth.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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757 MAINTENANCE MANUAL
 S 863-043
 (3)  
Turn the torque tubes for the LE slat by hand to retract the LE slats after the angle gearbox is fully lubricated.

 S 843-020

 (4)  
Put the manual override lever in the usual position (POS 2).

 G. Put the Airplane Back to Its Usual Condition
 S 413-220
 (1)  Install the access panels that follow (Ref 06-44-00/201):
 (a)  191CL/192CR LE Slat Drive Angle Gearbox
 S 083-223
 (2)  
Remove the lock on the power drive unit for the TE flap.

 S 863-224

 (3)  
Remove the circuit breaker locks and the DO-NOT-CLOSE tags, and close these circuit breakers on the P11 panel:

 (a)  
11B18, WARN ELEX B

 (b)  
　
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