S 863-051
 (2)  
Set the FLT CONTROL HYD POWER - TAIL switches No. 1, 2, 3, and 4 on the Pilot's Overhead Maintenance Panel, P461, to NORM.

 S 863-052

 (3)
Do this task: "Remove Electrical Power" (AMM 24-22-00/201).

 S 413-053

 (4)  
Close the access panels (AMM 06-09-07/201).

 TASK 12-21-17-643-027
 4.  Rudder Ratio Changer Lubrication________________________________
 A. Standard Tools and Equipment
 (1)  Grease gun
 B. Consumable Materials
 (1)  
D00633 Grease - BMS 3-33 (Preffered).

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

 C. References
 (1)  
06-09-07/201, Fin and Rudder Access Doors and Panels

 (2)  
24-22-00/201, Manual Control

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

 D. Access
 (1)  Location Zone 324 Vertical Fin, Rear Spar to Trailing Edge
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 (2)  Access Panel
 324DL Inspection Access Panel
 324HL Inspection Access Panel

 E. Prepare for the Lubrication
 S 863-028
 (1)  
Do this task: "Supply Electrical Power" (Ref 24-22-00/201).

 S 863-030

 (2)  
Remove hydraulic power from all four hydraulic systems
 (Ref 29-11-00/201).

 S 863-032

 (3)  
Set the FLT CONTROL HYD POWER - TAIL switches No. 1, 2, 3, and 4 on the Pilot's Overhead Maintenance Panel, P461, to SHUTOFF.

 S 863-033

 (4)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  P180 DC Power Distribution Panel
 1) 180E7 ELEV/RUD VLV SYS 2
 2) 180E22 ELEV/RUD VLV SYS 4
 3) 180H8 ELEV/RUD VLV SYS 1
 4) 180H23 ELEV/RUD VLV SYS 3

 S 013-041
 (5)  Open these access panels 324DL (lower rudder) and 324HL (upper rudder) (Ref 06-09-07/201).
 F. Lubricate the Rudder Ratio Changer
 S 643-036
 (1)  Lubricate the end of the output control rod to the power control module.
 G. Put the Airplane Back to Its Usual Condition
 S 863-037
 (1) Remove the DO-NOT-CLOSE tags and close these circuit breakers:
 (a)  P180 DC Power Distribution Panel
 1) 180E7 ELEV/RUD VLV SYS 2
 2) 180E22 ELEV/RUD VLV SYS 4
 3) 180H8 ELEV/RUD VLV SYS 1
 4) 180H23 ELEV/RUD VLV SYS 3

 S 863-038
 (2)  Set the FLT CONTROL HYD POWER - TAIL switches No. 1, 2, 3, and 4 on the Pilot's Overhead Maintenance Panel, P461, to NORM.
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 (3)  S 863-039Do this task:  "Remove Electrical Power" (Ref 24-22-00/201).
 (4)  S 413-040Close the access panels (Ref 06-09-07/201).

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 ELEVATOR CONTROL SYSTEM - SERVICING (LUBRICATION)
_________________________________________________
 1.  General_______
 A.  There is one task in this procedure. The task is for the lubrication of the elevator hinge bearings. The procedure has these parts:
 (1)
The preparation for the lubrication of the elevator hinge bearings
　
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