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A
757
MAINTENANCE MANUAL

SENSOR TRUCK BEAM
MAIN GEAR TRUCKFWD INBD
TILT SENSORS SEE A
J-2 BOX FIXED CONDUIT
SENSOR TARGET
INBD
FWD
SENSOR MOUNTING BRACKET
0.10 INCH CLEARANCE
BRACKET ASSEMBLY
A-A
MAIN GEAR SHOCK STRUT
FLEXIBLE CONDUIT
SENSOR
(S10064 LEFT, S10059 RIGHT)

A A
J-1 BOX
(S10062 LEFT, S10060 RIGHT)  FIXED CONDUIT
MAIN GEAR TRUCK TILT SENSORS (LEFT GEAR SHOWN, RIGHT GEAR OPPOSITE)
A
Main Gear Truck Tilt Sensor - PCA Monitor Test Figure 503
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757
MAINTENANCE MANUAL

 S 865-007
 (6)  
Move the FLT CONTROL SHUTOFF switches on the right side panel, P61, for the other two hydraulic systems to OFF. Attach DO-NOT-OPERATE tags and make sure the switch position lights come ON.

 S 865-008

 (7)  
Open two of these circuit breakers (for the other two hydraulic systems) on the overhead panel, P11, and attach DO-NOT-CLOSE tags:

 (a)  
11H17, FLT CONT SHUTOFF TAIL LEFT

 (b)  
11H18, FLT CONT SHUTOFF TAIL CTR

 (c)  
11H28, FLT CONT SHUTOFF TAIL RIGHT

 S 215-009
 (8)  
Make sure these circuit breakers on the P11 panel are closed:

 (a)  
EICAS (6 locations)

 E.
Rudder/Elevator Shutoff Valves - Test (Fig. 501)

 S 865-010
 (1)  
Push the STATUS switch on the display select panel, P9, to show the rudder position indicator on the bottom EICAS display.

 S 215-011

 (2)  
Move the rudder pedals and the control column through their full travel range and do these checks:

 (a)  
Make sure the rudder operates smoothly through its full travel range.

 (b)  
Make sure the elevators move smoothly through their full travel range.

 S 215-012
 (3)  
Move the FLT CONTROL SHUTOFF switch for the applicable hydraulic system to OFF and do these checks:

 (a)  
Make sure the valve motor operates smoothly and stops in its closed position.

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757 MAINTENANCE MANUAL
 (b) (c) (d)  Make sure the manual override lever and position indicator (located between the valve and the motor) is in its closed position (POS 2).Make sure the switch position light on the P61 panel is ON.Make sure the correct FLT CONT HYD message comes into view on EICAS.
 (4)  S 215-044Move the rudder pedals and the control column through their full travel range and do these checks: (a) Make sure the rudder does not move.
 NOTE:____ The remaining hydraulic pressure can cause the rudder to move a small distance.
 (b)  Make sure the elevators do not move.
 NOTE:____ The remaining hydraulic pressure can cause the elevators to move a small distance.
 (5)  S 215-013Move the FLT CONTROL SHUTOFF switch for the applicable hydraulic system to ON and do these checks: (a) Make sure the valve motor operates smoothly and stops in the open position. (b) Make sure the manual override lever and position indicator is in its open position (POS 1). (c) Make sure the switch position light is OFF.
 (6)  S 865-014Remove the power from the applicable hydraulic system (Ref 29-11-00).
 (7)  S 735-015Do the test procedure again for the other two hydraulic shutoff valves.

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