27-31-14
 ALL  ú ú 01 Page 404 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 494-006
 (6)  If you remove the two elevator PCUs at the same time, install the rigging and restraining tool in the position of the right PCU.
 TASK 27-31-14-404-019
 3. Elevator Power Control Unit Installation (Fig. 401)
________________________________________
 A. Special Tools and Equipment
 (1)  Rig Pin (E-5) - 0.309/0.311-inch diameter, 6.7 |0.25 inches long (MS20392-4)
 NOTE: The rig pin is part of the rig pin kit F70207-69, -78 or -83.
____
 (2)  
F80063-501 - Elevator Rigging and Restraining Tool

 B.
Consumable Materials

 (1)  
D00633 Grease - BMS 3-33 (Preferred)

 (2)  
D00015 Grease - BMS 3-24 (Optional)

 (3)  
C00259 Primer - BMS 10-11, Type 1

 (4)  
B00352 Alodine 1200

 C.
References

 (1)  
27-31-00/201, Elevator and Tab Control System

 (2)  
27-31-14/501, Elevator Power Control Unit

 (3)  
27-31-14/601, Elevator Power Control Unit

 D.
Access

 (1)  
Location Zone
 704 Tail Cone
 711 Elevator and Tab, LH
 712 Elevator and Tab, RH

 (2)  
Access Panels
 3801 Tail Cone Access Door, LH
 3802 Tail Cone Access Door, RH

 E.
Procedure

 S 224-008
 (1)  
Do this task: "Elevator Power Control Unit Wear Limits Inspection" (Ref 27-31-14/601).

 (a)  
If it is applicable, remove the elevator rigging and restraining tool.

 S 424-007
 (2)  
Install the elevator PCU:

 (a)  
Set the elevator PCU in the aft compartment.

 (b)  
Install the upper mounting bolt in the output torque tube.

 (c)  
Apply grease to the bolt.

 (d)  
Install the bolt with the bolt head inboard.

 (e)  
Install the nut and the washer.

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 27-31-14
 ALL  ú ú 02 Page 405 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (3)  S 434-009Install the rod end of the elevator PCU to the mounting bracket: (a) Apply grease to the bolt. (b) Install the left bolt with the bolt head inboard and the right bolt with the bolt head outboard. (c) Install the first locknut. 1) Tighten the locknut to 550-600 pound-inches.
 CAUTION:_______ DO NOT TIGHTEN THE FIRST LOCKNUT AGAIN AFTER YOU TIGHTEN THE SECOND LOCKNUT. YOU CAN CAUSE DAMAGE TO THE EQUIPMENT.
 (d) (e) (f)  Install the second locknut. 1) Tighten the locknut to 225-250 pound-inches.Move the elevator PCU to the fully retracted position.Make sure the interference between the PCU and the reaction link is in the limits of Fig. 403: 1) If it is necessary, cut the interference area on the reaction link. 2) Apply the alodine and the primer to the area that you cut on the reaction link.
 (4)  S 434-010Install the input rod to the input crank: (a) Apply grease to the bolt assembly. (b) Install the bolt assembly with the bolt head facing left. 1) Install a washer below the bolt head (c) Tighten the outer bolt to 45-60 pound-inches.
 CAUTION:_______ DO NOT TIGHTEN THE OUTER BOLT AGAIN AFTER YOU TIGHTEN THE LOCKNUT. YOU CAN CAUSE DAMAGE TO THE EQUIPMENT.
 (d)  Install the locknut with a washer on the end of the inner bolt. 1) Tighten the locknut to 15-20 pound-inches.
 (5)  S 094-011Remove the plugs and caps from the hydraulic lines and the PCU ports.
 (6)  S 434-012Connect the two flexible hydraulic lines to the elevator PCU.
 (7)  S 094-013Remove the rig pin E-5 from the aft control quadrant.

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 27-31-14
 ALL  ú ú 02 Page 406 ú Mar 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
　
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