~........................................................... | SPEED BRAKE HANDLE POSITION | PORTABLE TESTER DISPLAY | ............................................................. | ARMED | 7705 to 7740 (nominal 7723) | | IN FLIGHT | 7047 to 7102 (nominal 7065) | | DOWN | 7763 to 0015 (nominal 0000) | 2.............................….............................1
 F. Put the Airplane in its Usual Condition
 S 865-026
 (1)  Put the speed brake handle in the down position.
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A 737-300/400/500MAINTENANCE MANUAL
 (2)  S 865-027Put the TEST--NORMAL switch to the NORMAL position.
 (3)  S 865-028Put the POWER switch on the portable tester to the OFF position.
 (4)  S 085-029Disconnect the portable tester from the system test plug on the P18 panel.
 (5)  S 865-030Remove the hydraulic power (AMM 29-15-00/201).
 (6)  S 865-031Remove the electrical power if it is not necessary (AMM 24-22-00/201).

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A
737-300/400/500MAINTENANCE MANUAL
 FLIGHT RECORDER ACCELEROMETER - REMOVAL/INSTALLATION
____________________________________________________
 1.  General_______
 A.  There are two tasks in this procedure. There is one task for the removal and one task for the installation of the flight data recorder accelerometer.
 B.  The accelerometer is on the forward wall of the right main wheel well.
 TASK 31-24-81-004-001
 2.  Flight Data Recorder Accelerometer Removal__________________________________________
 A.  Access
 (1)  Location Zone
 217 Right Main Wheel Well

 B.  Procedure
 S 864-002
 (1)  Open these circuit breakers:
 (a)  P18 Panel
 1) FLIGHT RECORDER AC
 2) FLIGHT RECORDER DC

 S 034-003
 CAUTION:_______BE CAREFUL WITH THE ACCELEROMETER. YOU CAN EASILY CAUSE DAMAGE TO THE ACCELEROMETER.
 (2)  
Disconnect the electrical connector, D821, from the accelerometer (Fig. 401).

 S 034-004

 (3)  
Remove the screws that attach the accelerometer to the mounting bracket.

 (4)  
Remove the accelerometer.

 S 024-005
 TASK 31-24-81-404-006
 3.  Flight Data Recorder Accelerometer Installation_______________________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 31-24-00/501, Flight Data Recorder System

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A 737-300/400/500MAINTENANCE MANUAL
ACCELEROMETER (AFT SIDE OF RIGHT WHEEL WELL FORWARD BULKHEAD)
SINGLE AXIS ACCELEROMETER
X AXIS
LONGITUDINAL
OR FORWARD
THREE AXIS ACCELEROMETER
Flight Recorder Accelerometer Installation
Figure 401

Z AXIS VERTICAL OR UP
Z AXIS VERTICAL OR UP
Y AXIS LATERAL OR OUTBOARD
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