(2)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
(3)
AMM 29-21-00/201, Ram Air Turbine (RAT) System
(4)
AMM 29-21-17/201, Ram Air Turbine (RAT) Stowed Limit Switch
C. Access
(1)
Location Zones 198 Wing to Body - Aft Lower Half (Right) 211/212 Control Cabin
(2)
Access Panel
198MR RAT Compartment
D. Install the Door Link (Fig. 401)
S 434-009
(1) Install the link pin in the door link and tighten the nut as follows:
(a) Tighten the nut to 1300-2000 pound-inches.
S 034-010
(2)
Loosen the locknut and extend the door link to its maximum length.
(3)
Apply a layer of grease to the threads on the rod end fitting.
(4)
Hold the door link on the RAT strut.
S 434-013
(5)
Install the washer and nut to attach the door link to the RAT strut and tighten the nut as follows:
S 624-011
S 824-012
(a) Tighten the nut to 2200-5300 pound-inches.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-21-10
ALL ú ú 01 Page 403 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
(6) S 434-014Install the door link in the door fitting with the bolt, washers, bushings, and nut and tighten the nut as follows:
NOTE:____ The countersunk face of the washer must be to the bolt head.
(a) Tighten the nut to 630-1070 pound-inches.
(7) S 644-015Lubricate the spherical bearings on the door link (AMM 12-21-30/301).
(8) S 864-016Pressurize the right hydraulic system and reservoir (AMM 29-11-00/201).
(9) S 834-017Do the steps that follow to adjust the door link: (a) Retract the RAT (AMM 29-21-00/201).
NOTE:____ If the RAT will not fully retract, remove the pressure from the hydraulic reservoir. This will decrease the return pressure in the deployment actuator.
(b) (c) (d) Do a check to make sure the forward edge of the door and the airplane body align correctly.Do the steps that follow until the forward edge of the compartment door aligns with the airplane body: 1) Extend the RAT (AMM 29-21-00/201). 2) Decrease the length of the door link a small distance. 3) Retract the RAT (AMM 29-21-00/201). 4) Do a check to make sure the forward edge of the door and the airplane body align correctly.When the forward edge of the door aligns correctly, decrease the length of the door link seven half-turns.
NOTE:____ This will put a preload on the compartment door.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-21-10
ALL ú ú 01 Page 404 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(e)
Retract the RAT (AMM 29-21-00/201).
(f)
Make sure the RAT UNLOCKED light on the overhead panel, P5, is on while you retract the RAT.
(g)
Make sure the RAT UNLOCKED light on the P5 panel is off with the conditions that follow: 1) The RAT is fully retracted 2) The RAT ground manual switch is in the neutral position.
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 液压 CHAPTER 29 - HYDRAULIC POWER 2(88)
