(b)  
Disconnect the line from the charging valve manifold.

 (c)  
Loosen the bolts that hold the clamp to the mounting bracket.

 (d)  
Slide the pressure transmitter away from the clamp.

 (e)  
Remove the union from the transmitter and discard the packing.

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A
737-300/400/500MAINTENANCE MANUAL
 S 494-018
 (2)  Put a cap on the open line.
 TASK 32-41-52-404-012
 3. Hydraulic Brake Pressure Transmitter Installation (Fig. 401)
_________________________________________________
 A. General
 (1)  
In subsequent steps, the hydraulic brake pressure transmitter is referred to as the transmitter.

 B.
Consumable Materials

 (1)  
G01158 Nitrogen, Gaseous (Dry, Commercial
 Grade, 99.9 percent pure)

 (2)  
D00288 Lubricant - MCS 352

 NOTE:  Use BMS 3-11 or MCS 352 to lubricate
____
 packing and fitting.

 (3)  D00196 Hydraulic Fluid - BMS 3-11
 NOTE:  Use BMS 3-11 or MCS 352 to lubricate
____
 packing and fitting.

 C. References
 (1)  
AMM 12-15-11/301 Hydraulic Accumulator Servicing

 (2)  
AMM 29-15-00/201, Hydraulic Systems A, B, and Standby

 D.
Access

 (1)  
Location Zone 217 Body Landing Gear Well - Right (Hydraulic Brake Pressure Transmitter)

 102  Control Cabin - Right (P6 Main Power Distribution Panel)
 E. Pressure Transmitter Installation
 S 424-013
 (1)  
Do these steps to install the transmitter:

 (a)  
Lubricate the packing and union.

 (b)  
Install the union in the transmitter.

 (c)  
Remove the cap from the line that goes to the charging valve manifold.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (d)  Slide the transmitter in to its position under the clamp on the mounting bracket and connect the line.
 NOTE: Tighten the line with your hand now to make sure the
____ transmitter is aligned. You will tighten the line fully in a subsequent step.
 (e)  
Tighten the bolts for the clamp that holds the transmitter to the mounting bracket.

 (f)  
Tighten the line that goes to the charging valve manifold.

 (g)  
Connect the electrical connector to the transmitter.

 S 864-015
 (2)  
Remove the DO-NOT-CLOSE tag and close this circuit breaker:

 (a)  
On the P6 Main Power Distribution Panel:
 1) 6A17, HYD BRAKE PRESS IND

 S 614-020
 (3)  
Service the accumulator with nitrogen (AMM 12-15-11/301).

 F.
Pressure Transmitter - Installation Test

 S 864-016
 (1)  
Pressurize the hydraulic systems (AMM 29-15-00/201).

 S 864-021

 (2)  
Set the parking brake.

 S 214-017

 (3)  
Do a check of the transmitter for leaks.

 S 714-013

 (4)  
Make a written record of the hydraulic pressure shown on the direct reading pressure gage.

 NOTE: The pressure that is shown should be approximately 3000 psig.
____ The direct reading pressure gage is in the wheel well for the right main landing gear, near the brake accumulator.
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