757 AMM 飞机维护手册 液压 CHAPTER 29 - HYDRAULIC POWER 2(74)

 (5)
AMM 29-21-00/501, Ram Air Turbine (RAT) System

 (6)
AMM 29-21-05/401, Ram Air Turbine (RAT) Deployment Actuator

 (7)
AMM 29-21-10/401, Ram Air Turbine (RAT) Door Actuator Link

 (8)
AMM 29-21-15/501, Ram Air Turbine (RAT) Tachometer Speed Sensor

 (9)
AMM 29-21-17/201, Ram Air Turbine (RAT) Stowed Limit Switch

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A

757
MAINTENANCE MANUAL

 F. Access
 (1)  
Location Zones
 198 Wing to Body - Aft Lower Half (Right)
 211/212 Control Cabin

 (2)  
Access Panel
 198MR RAT Compartment

 G.
Install the RAT Assembly (Fig. 401)

 S 824-026
 (1)  
Hold the RAT in the correct position to install it in the support frame.

 S 434-027

 (2)  
Install the bolt (6), nut (7), and washer (8) at the inboard pivot point and tighten the bolt as follows:

 NOTE:____Install the washer (8) below the nut (7). The nut (7) must be on the outboard end of the pivot.
 (a)  Tighten the bolt (6) to 290 to 510 pound-inches.
 S 644-028
 (3)  
Apply grease on the bushing (4).

 S 434-029

 (4)  
Install the bolt (1), nut (2), washers (3), and bushing (4) at the outboard pivot point and tighten the bolt as follows:

 NOTE: Install the countersunk washer (3) below the bolt head with
____ the countersunk side to the bolt head. The nut (2) must be on the inboard end of the pivot.
 (a)  Tighten the bolt (1) to 1400 to 1900 pound-inches.
 S 434-030
 (5)  
Connect the electrical wires.

 S 644-031

 (6)  
Apply hydraulic lubricant or hydraulic fluid to the O-rings that you will install in the hydraulic lines.

 (7)  
Connect the hydraulic lines to the top of the strut.

 (8)  
Apply a layer of grease to the bushings (12).

 S 434-032
 S 644-033
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 434-034
 (9)  
Install the bushings (12), washers (11), bolt (10), and nut (13) to connect the deployment actuator to the RAT strut (AMM 29-21-05/401).

 S 434-035

 (10)
 Install the washer (15) and nut (14) to connect the door link (19) to the RAT strut (AMM 29-21-10/401).

 S 644-036

 (11)
 Lubricate the RAT (AMM 12-21-30/301).

 S 864-037

 (12)
 Remove the circuit breaker lock set and close these circuit breakers on the overhead panel, P11:

 (a)  
11D26, HYDRAULIC RAT CONT or HYDRAULIC RAT AUTO CONT

 (b)  
11D27, HYDRAULIC RAT AUTO or HYDRAULIC RAT AUTO PWR