B.  Procedure
 S 864-002
 (1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  
P6-2 Circuit Breaker Panel
 1) PRESS IND SYS A
 2) PRESS IND SYS B

 (b)  
P42 Five Volt Lighting Panel
 1) 5V AC SEC XFMR

 S 024-014
 (2)  Loosen the adjustment screw for the indicator clamp.
 NOTE: The clamp adjustment screw is the larger screw found to the
____
 right of the indicator.

 S 024-004
 (3)  
Pull the indicator out from the instrument panel to get access to the electrical connector.

 (4)  
Disconnect the electrical connector.

 (5)  
Remove the hydraulic pressure indicator.

 S 024-015
 S 024-006
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 TASK 29-31-11-404-007
 3. Hydraulic Pressure Indicator Installation
_________________________________________
 A. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 29-09-00/201, Hydraulic Reservoir Pressurization System

 (3)  
AMM 29-15-00/201, Hydraulic Systems A, B, and Standby

 B. Access
 (1)  Location Zone
 101/102 Control Cabin

 C. Procedure
 S 424-009
 (1)  
Connect the electrical connector to the indicator.

 S 424-016

 (2)  
Install the indicator into the instrument panel.

 S 414-013

 (3)  
Tighten the adjustment screw for the indicator clamp.

 NOTE: The clamp adjustment screw is the larger screw found to the
____
 right of the indicator.

 S 864-011
 (4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6-2 Circuit Breaker Panel
 1) PRESS IND SYS A
 2) PRESS IND SYS B

 (b)  
P42 Five Volt Lighting Panel
 1) 5V AC SEC XFMR

 (5)  
Supply electrical power (AMM 24-22-00/201).

 S 864-017

 (6)  
Pressurize system A and system B hydraulic reservoir (AMM 29-09-00/201).

 (7)
Pressurize hydraulic system A and system B (AMM 29-15-00/201).

 S 824-012
 S 864-018
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A
737-300/400/500MAINTENANCE MANUAL
 (8)  S 714-019Make sure that a hydraulic pressure of 2800-3100 psi shows on the pressure indicator for system A and B.
 (9)  S 864-020Remove power from hydraulic system A and system B (AMM 29-15-00/201).
 S 864-021

 (10) Remove electrical power (AMM 24-22-00/201).

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A
737-300/400/500MAINTENANCE MANUAL
 SYSTEM PRESSURE TRANSMITTER - REMOVAL/INSTALLATION
__________________________________________________
 1.  General_______
 A.  There are two tasks in this procedure. There is a task for the removal and a task for the installation of the system pressure transmitter.
 B.  The pressure transmitters for systems A and B are equivalent units. The pressure transmitters are installed on the forward wheel well bulkhead. You can get access to the system A transmitter through the left wheel well and the system B transmitter through the right wheel well.
　
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