S 024-015

 (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) For hydraulic system A indicator: a) SYS A HYD OIL QTY

 2)  For hydraulic system B indicator: a) SYS B HYD OIL QTY

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

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

 S 864-016

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

 S 824-012
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 (7)  S 714-017For the applicable system, make sure that the hydraulic fluid quantity indicator shows the same reading as the indicator on the applicable hydraulic reservoir.
 (8)  S 864-018Remove electrical power (AMM 24-22-00/201).

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A
737-300/400/500MAINTENANCE MANUAL
 HYDRAULIC FLUID QUANTITY TRANSMITTER/INDICATOR - 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 hydraulic fluid quantity transmitter.
 TASK 29-33-12-004-001
 2.  Hydraulic Fluid Quantity Transmitter/Indicator Removal (Fig. 401)______________________________________________________
 A.  References
 (1)  29-09-00/201, Hydraulic Reservoir Pressurization System
 B.  Access
 (1)  Location Zone
 216 Main Wheel Well, LH
 217 Main Wheel Well, RH

 C.  Procedure
 S 864-002
 (1)  
Release pressure from the applicable hydraulic reservoir system (Ref 29-09-00/201).

 S 864-024

 (2)  
Drain the applicable system reservoir until the fluid level is below 45%, as shown in the flight deck.

 S 864-005

 (3)  
Open the applicable circuit breakers and attach DO-NOT-CLOSE tags:

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

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A 737-300/400/500MAINTENANCE MANUAL
SYSTEM A 
RESERVOIR 
SEE  B 
SYSTEM B 
RESERVOIR 
HYDRAULIC SYSTEM  SEE  C 
SEE  A 

HYDRAULIC SYSTEM
A

TRANSMITTER/INDICATOR
TRANSMITTER/INDICATOR
MOUNTING BOLT
(TYPICAL)

MOUNTING BOLT (EXAMPLE)
SYSTEM A SYSTEM BRESERVOIR RESERVOIR
SYSTEM A RESERVOIR SYSTEM B RESERVOIR BC
Hydraulic Fluid Quantity Transmitter/Indicator Installation
Figure 401

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