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 INDICATORS ú CONFIG 3 ú 02A Page 501 (BARFIELD SYSTEM TESTER) ú Nov 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 E.  When you replace the fuel summation unit, adjustment of the unit is not necessary.
 F.  If the value on a fuel quantity indicator changes suddenly, do a check for water in the applicable fuel tank (AMM 12-11-00/301).
 G.  An indicator in the control cabin is referred to as a fuel quantity
____ indicator. An indicator in the refuel control panel (P15) on the wing is referred to as a refuel quantity indicator.
______
 TASK 28-41-00-715-004-003
 2.  Operational Test - Fuel Quantity Indicating System
__________________________________________________
 A.  Access
 (1)  
Location Zones
 101 Control Cabin, Left
 402 Right Wing Outboard Leading Edge

 (2)  
Access Panels
 6540 Refueling Station Access Door

 

 B.  Procedure
 S 865-001-003
 (1)  Make sure these circuit breakers are closed:
 (a)  P6 Main Power Distribution Panel
 1) EP GND FUELING
 2) QTY

 S 975-002-003
 (2)  
Write the values shown on the fuel quantity indicators.

 S 715-003-003

 (3)  
Push and hold the QTY TEST switch adjacent to the fuel quantity indicators.

 (4)
Make sure the fuel quantity indicators go to a value of zero.

 (5)  
Release the test switch.

 S 715-007-003

 (6)  
Make sure the indicators show the same value that you wrote before this step with a tolerance of |50 pounds (|25 kilograms).

 (7)  
Open the access door for the refuel control panel (P15).

 (8)  
Write the values shown on the refuel quantity indicators.

 (9)  
Set and hold the test switch to TEST GAGES.

 S 715-005-003
 S 715-006-003
 S 015-008-003
 S 975-009-003
 S 715-010-003
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 AIRPLANES WITH ANALOG FUEL QUANTITY ú  28-41-00
 INDICATORS ú CONFIG 3 ú 02A Page 502 (BARFIELD SYSTEM TESTER) ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 715-011-003
 (10) Make sure the refuel quantity indicators go to a value of zero.
 NOTE: The value on the refuel quantity indicator increases when you
____
 set the test switch.

 S 715-012-003
 (11)
 Release the test switch.

 S 715-013-003

 (12)
 Make sure the refuel quantity indicators show the same values that you wrote before this step with a tolerance of |50 pounds (|25 kilograms).

 S 415-014-003

 (13)
 Close the access door for the refuel control panel (P15).

 TASK 28-41-00-825-015-003
 3. System Trim - Fuel Quantity Indicating System
_____________________________________________
 A. Equipment
 (1)  
System test unit - Model 8000, Barfield Instrument Corp., Miami, Florida 33142

 (2)  
Test harnesses

 NOTE:____You must control the quality of the test cables. Make sure the stray capacitance for the test cables is less than
 0.2 pf.
 (a)  
F72731-119 - center tank

 (b)  
F72731-121 - tanks No. 1 and 2

 B. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 28-23-00/201, Defueling

 C. Access
 (1)  Location Zones
 101 Control Cabin, Left
 402 Right Wing Outboard Leading Edge

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 AIRPLANES WITH ANALOG FUEL QUANTITY ú  28-41-00
 INDICATORS ú CONFIG 3 ú 01A Page 503 (BARFIELD SYSTEM TESTER) ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
　
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