E. Procedure
 S 434-015
 (1)  
Install the new O-rings on the transducer.

 S 644-016

 (2)  
Lubricate the O-rings with the hydraulic fluid.

 S 434-017

 (3)  
Install and tighten the transducer into the hydraulic line.

 S 434-018

 (4)  
Install a lockwire between the transmitter and the hydraulic line (AMM 20-10-23/401).

 S 434-019

 (5)  
Connect the electrical connector to the transmitter.

 F. Brake Pressure Transmitter Test
 S 864-059
 (1)  
If you use test equipment other than the hand-held download unit (HHDLU), install the tester to the test connector at the right side panel, P61.

 S 864-060

 (2)  
If you use the hand-held download unit (HHDLU), attach the HHDLU to the test connector at the front side of the flight data recorder.

 NOTE: To get access to the FDR, open the lower ceiling panel No. 1
____ above the aft galley (AMM 25-22-02/401). The HHDLU can only be connected to the AlliedSignal flight data recorder (FDR).
 S 864-063
 (3)  
Supply electrical power (AMM 24-22-00/201).

 S 864-022

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

 (a)  
11J7, FLIGHT RECORDER AC

 (b)  
11J8, FLIGHT RECORDER DC

 (c)  
11S1, AIDS SENSOR

 
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MAINTENANCE MANUAL

 S 864-055
 (5)  With the Data Signal Display Unit (DSDU), set the control switches on the tester as follows:
 (a)  
Set the power switch to the ON position.

 (b)  
Set the INPUT switch to the ARINC INPUT DATA position.

 (c)  
Set the SYNC switch to the SYNC B position.

 (d)  
Set the DATA PARAMETER/DOCUMENTARY switch to the DATA PARAMETER position.

 (e)  
Set the OCTAL DISPLAY switch to the 12 BIT position.

 (f)  
Set the SUBFRAME and WORD as specified.

 (g)  
With the STP tester, set the control switches on the tester as follows: 1) Set the ON/OFF switch to the ON position. 2) Push the SYS TEST switch and make sure there is no failure

 message on the tester display. 3) Push the CLR switch. 4) Push the FDAU switch. 5) Set the UPDATE switch to the AUTO position. 6) Set the data switch to the 12 BIT position. 7) Set the SUBFRAME and WORD as specified.
 S 864-056
 (6)  With the Teledyne tester (P/N 2222786), set the switches on the tester as follows:
　
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