S 864-084

 (6)  
Remove the hydraulic power if it is not necessary (AMM 29-11-00/201).

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757 MAINTENANCE MANUAL
 RAM AIR TURBINE (RAT) SAFETY VALVE - REMOVAL/INSTALLATION
_________________________________________________________
 1.  General_______
 A.  This procedure contains two tasks, one to remove and one to install the safety valve for the ram air turbine (RAT).
 TASK 29-21-14-024-001
 2.  Remove the Safety Valve for the Ram Air Turbine (RAT)_____________________________________________________
 A.  References
 (1)  
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems

 (2)  
AMM 29-21-00/201, Ram Air Turbine (RAT) System

 B.  Access
 (1)  
Location Zones
 198 Wing to Body - Aft Lower Half (Right)

 (2)  
Access Panel
 198MR RAT Compartment

 C.  Remove the Safety Valve (Fig. 401)
 S 864-002
 (1)  
Extend the RAT (AMM 29-21-00/201)

 S 864-003

 (2)  
Remove the pressure from the right hydraulic system and reservoir (AMM 29-11-00/201).

 S 034-004

 (3)  
Disconnect the hydraulic lines from the safety valve.

 (4)  
Put caps on the hydraulic lines.

 (5)
Disconnect the electrical connector from the safety valve.

 S 034-007

 (6)  
Remove the bolts and washers that attach the safety valve to the mounting bracket.

 S 034-005
 S 034-006
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757
MAINTENANCE MANUAL

AFT BULKHEAD OF THE RIGHT WHEEL WELL
AFT BULKHEAD OF THE SAFETY VALVE
RIGHT WHEEL WELL
FOR THE RAM SEE A
AIR TURBINE (RAT)
SEE H
PRESSURE LINE FROM
THE RIGHT HYDRAULIC
SYSTEM

FWD
MOUNTING
BRACKET
SAFETY
VALVE
AFT BULKHEAD OF THE RIGHT WHEEL WELL
RETURN LINE
TO THE RIGHT
A
HYDRAULIC
SYSTEM
HYDRAULIC LINE TO THE RAT ACTUATOR
ELECTRICAL CONNECTOR
BOLT AND WASHER
(3 LOCATIONS)
FWD

SAFETY VALVE
B
Safety Valve Installation Figure 401
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757 MAINTENANCE MANUAL
 S 024-008
　
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