HYDRAULIC 
SHUTOFF VALVE 
(LEFT SYSTEM)  1. HYDRAULIC LINE 
SEE  A 
2. BOLT 
3. WASHER 
(3 LOCATIONS) 

4. SHUTOFF VALVE
HYDRAULIC 5. BRACKET SHUTOFF VALVE (CENTER SYSTEM)
SEE A
1. HYDRAULIC LINE
6. ELECTRICAL
CONNECTOR FWD
HYDRAULIC
INBD
SHUTOFF VALVE A
NOSE GEAR TOWING LEVER LOCKPIN
TOWING LEVER 
(IN THE TOW 
POSITION) 
TOWING LEVER 
B 
Rudder and Elevator Shutoff Valves 
Figure 201 

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-23-01
 ALL  ú ú 01 Page 202 ú Sep 20/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
 D. Remove the Rudder and Elevator Hydraulic Shutoff Valves (Fig. 201)
 S 032-009
 (1)  Disconnect the electrical connector (6) from the shutoff valve (4).
 NOTE: The shutoff valve for the right hydraulic system is found
____ in the wheel well for the right main gear.
 The shutoff valves for the center and left hydraulic systems are found in the wheel well for the left main gear.
 S 032-010
 (2)  
Disconnect the hydraulic lines (1) from the valve and do this step:

 (a)  
Seal the hydraulic lines and the valve ports with a cap.

 S 032-011
 (3)  
Remove the bolts (2) that connect the shutoff valve to its bracket (5) (3 locations).

 S 022-012

 (4)  
Remove the shutoff valve (4).

 TASK 27-23-01-422-013
 3. Rudder and Elevator Hydraulic Shutoff Valves - Installation
___________________________________________________________
 A. Parts ~.............................................................................. | AMM | | AIPC | ................ ............................. | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 201 | 2 | Bolt | 27-23-01 | 01 | 15 | | | | | | 02 | 15 | | | | | | 03 | 8 | | | 3 | Washer | | 01 | 20 | | | | | | 02 | 20 | | | | | | 03 | 10 | | | 4 | Shutoff Valve | | 01 | 10 | | | | | | 02 | 10 | | | | | | 03 | 20 | 2.......…......…...................................…...........…......…........1
 B. References
 (1)  
24-22-00/201, Electrical Power - Control

 (2)  
27-23-00/501, Rudder and Elevator Hydraulic Systems

 (3)  
32-00-15/201, Landing Gear Door Locks

 C.
Access

 (1)  
Location Zone
 730/740 Main Landing Gear and Doors

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 D. Install the Rudder and Elevator Hydraulic Shutoff Valve (Fig. 201)
 S 422-014
 (1)  
Align the shutoff valve (4) with its connection points and do this step:

 (a)  
Install the bolts (2) and washers (3) that connect it to the bracket.

 S 432-015
 (2)  
Connect these components to the shutoff valve:

 (a)  
The hydraulic lines (1)

 (b)  
The electrical connector (6).

 S 222-016
 (3)  
Make sure the electrical resistance between the valve and the airplane is not more than 0.0025 ohms.

 S 862-017

 (4)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the overhead panel, P11:

 (a)  
11H17, FLT CONT SHUTOFF TAIL LEFT

 (b)  
11H18, FLT CONT SHUTOFF TAIL CTR

 (c)  
11H28, FLT CONT SHUTOFF TAIL RIGHT

 S 862-018
 (5)  
Remove the DO-NOT-OPERATE tags and move the FLT CONTROL SHUTOFF L, R, and C switches on the right side panel, P61, to ON.

 S 732-019

 (6)
　
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