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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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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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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) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 3(78)
