EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-31-05
 ALL  ú ú 01 Page 409 ú May 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 S 034-027
 (7)  
Remove the bolts (1), washers (2), and nuts (3) which connect the PCA (9) to the trunnion (4).

 S 024-028

 (8)  
Remove the PCA from the airplane.

 TASK 27-31-05-424-067
 3. Install the Power Control Actuator (PCA)
________________________________________
 A. Consumable Materials
 (1) A00247 Sealant, Chromate Type - BMS 5-95 ú (2) D00633 Grease, Corrosion Preventive - BMS 3-33 (Recommended) ú (3) D00015 Grease, Corrosion Preventive - BMS 3-24 (Optional) ú (4) D00013 Grease, MIL-PRF-23827 (Alternative)
 B. Parts
 ~............................................................................... | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................. | 401 | 1 |Bolt | 27-31-05 | 01 | 890 | | | 2 |Washer | | | 895 | | | 3 |Nut | | | 900 | | | 6 |Bolt | | | 275 | | | 7 |Washer | | | 280 | | | 8 |Nut | | | 285 | | | 9 |Power Control Actuator | | | 905 | | | 14 |Bolt | | | 825 | | | 15 |Washer | | | 827 | | | 16 |Bushing | | | 840 | | | 17 |Washer | | | 830 | | | 18 |Nut | | | 835 | 2.......….......…....................................…...........….....…........1
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-31-05
 ALL  ú ú 01.1 Page 410 ú Sep 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 C. References
 (1)  
AMM 06-42-00/201, Empennage Access Doors and Panels

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

 (3)  
AMM 27-31-00/501, Elevator Control System

 (4)  
AMM 27-31-05/601, Elevator Power Control Actuator

 D.
Access

 (1)  
Location Zones 211/212 Control Cabin 335/345 Horizontal Stabilizer, Rear Spar to Trailing Edge

 (2)  
Access Panels 335DB/345DB Left/Right Elevator, PCU's and Control Linkage

 E.
Elevator PCA Installation (Fig. 401)

 S 644-029
 (1)  Lubricate the trunnion (4) and the idler link (13) with BMS 3-33 grease through the grease fittings (Section A-A). BMS 3-33 (recommended), BMS 3-24 (optional).
 NOTE: Turn the parts to make sure that there is sufficient
____ lubrication, and remove any unwanted grease from the parts.
 S 224-030
 (2)  
Do a check for the permitted wear on the PCA attach points
 (AMM 27-31-05/601).

 S 104-031

 (3)  
Clean the mating surfaces between the PCA (9) and the trunnion (4), and remove all of the remaining sealant.

 S 624-032

 (4)
Apply a layer of sealant to the faying surface of the PCA (9) and put the PCA against the faying surface of the trunnion (4).

 S 434-033

 (5)  
Install the bolts (1), washers (2), and nuts (3) to the PCA with wet sealant.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 411 ú May 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 434-034
 (6)  Tighten the nuts (3) to 90-125 pound-inches (10.2-14.1 newton-meters)
 NOTE: Make sure the trunnion and the flanged spacer can turn
____
 freely.

 S 644-035
 (7)  
Fully lubricate the PCA rod end (12) with BMS 3-33 grease through the grease fittings (Section A-A). BMS 3-33 (recommended), BMS 3-24 (optional).

 S 434-036

 (8)  
　
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