B. Procedure
 S 864-003
 (1)  Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  P6 Main Power Distribution Panel 1) QTY 2) EP GND FUELING
 S 034-004
 (2)
Loosen the clamp screw of the applicable indicator.

 S 024-005

 (3)  
Move the indicator away from the panel.

 S 034-006
 (4) Disconnect the electrical connector at the indicator. ú ú TASK 28-41-51-404-015 ú3. Fuel Quantity Indicator Installation (Fig. 401)
____________________________________
 A. Access
 (1)  Location Zone
 101 Control Cabin Left
 102 Control Cabin Right

 B. Procedure
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 28-41-51
 ALL  ú ú 02.1 Page 401 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

737-300/400/500
MAINTENANCE MANUAL

FUEL QUANTITY INDICATOR
SEE A
FLIGHT COMPARTMENT
CLAMP
CLAMP  ADJUSTMENT
RETAINING  SCREW
SCREW
CLAMP
PANEL
FUEL QUANTITY
INDICATOR
FUEL QUANTITY INDICATOR A
Fuel Quantity Indicator Installation Figure 401
M63564
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 28-41-51
 ALL  ú ú 02.1 Page 402 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 434-034
 CAUTION: MAKE SURE YOU CONNECT THE INDICATOR TO THE CORRECT CONNECTOR.
_______ DAMAGE TO EQUIPMENT CAN OCCUR IF THE INDICATOR SHOWS THE FUEL QUANTITY FOR THE WRONG TANK.
 (1)  Connect the electrical connector to the rear of the indicator.
 NOTE: The wire bundle for the indicator for the No. 1 tank
____ (left wing tank) has red sleeving. The wire bundle for the indicator for the center tank has yellow sleeving. The wire bundle for the No. 2 tank (right wing tank) has blue sleeving.
 S 424-018
 (2)  
Put the indicator into the panel.

 S 434-019

 (3)  
Tighten the clamp screw on the indicator.

 S 864-023

 (4)  
Close these circuit breakers and remove the DO-NOT-CLOSE tags:

 (a)  P6 Main Power Distribution Panel
 1) EP GND FUELING
 2) QTY

 S 714-024
 (5)  
Push the test switch on the indicator to make sure the indicator operates.

 S 714-036

 (6)  
Do these steps to make sure the fuel quantity indicators are installed in the correct position:

 (a)  
Write down the fuel quantities shown by each of the fuel quantity indicators.

 (b)  
Disconnect the connector D884 at the bussing plug for the No. 1 main tank on the front spar.

 (c)  
AIRPLANES WITH DIGITAL INDICATORS; Make sure the indicator for the No. 1 tank shows zero fuel quantity and an error code.

 (d)  
AIRPLANES WITH ANALOG INDICATORS; Make sure the indicator for the No. 1 tank moves downscale from the value that you wrote down before.

 (e)  
Make sure the indicators for the center tank and the No. 2 tank show the same quantities that you wrote down before.

 (f)  
Connect the D884 connector again.

 (g)  
Disconnect the connector D886 at the center tank bussing plug on the rear in the wheel well.

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 28-41-51
 ú  ALL  ú
 ú ú  ú 05.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.  Page 403Jul 12/02 

A 
737-300/400/500MAINTENANCE MANUAL
 (h)  AIRPLANES WITH DIGITAL INDICATORS;
　
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