(2)
Access Panels
6540 Refueling Station Access Door
B. Procedure
S 865-002-001
(1) Make sure these circuit breakers are closed:
(a) P6 Main Power Distribution Panel
1) QTY
2) EP GND FUELING
S 975-003-001
(2)
Write the values shown on the fuel quantity indicators.
S 715-004-001
(3)
Push and hold the QTY TEST switch adjacent to the fuel quantity indicators.
S 715-005-001
(4)
Make sure the fuel quantity indicators go to a value of zero.
S 715-006-001
(5)
Release the test switch.
(a) Make sure the fuel quantity indicators show the same values that you wrote before this step to a tolerance of |50 pounds (|25 kgs).
(6)
Open the access door for the refuel control panel (P15).
(7)
Write the values shown on the refuel quantity indicators.
(8)
Set and hold the test switch to TEST GAGES.
(9)
Make sure the refuel quantity indicators go to a value of zero.
S 015-007-001
S 975-008-001
S 715-009-001
S 715-010-001
NOTE: The value on the refuel quantity indicator increases when you
____
set the P15 test switch.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
AIRPLANES WITH ANALOG FUEL QUANTITY ú 28-41-00
INDICATORS ú CONFIG 1 ú 01A Page 502 (GULL SYSTEM TESTER) ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 715-011-001
(10) Release the test switch.
(a) Make sure the refuel quantity indicators show the same values that you wrote before this step to a tolerance of |50 pounds (|25 kilograms).
S 415-012-001
(11) Close the access door for the P15 panel on the wing.
TASK 28-41-00-825-013-001
3. System Trim - Fuel Quantity Indicating System
_____________________________________________
A. Equipment
(1)
System test unit - Model GTF-2, P/N 361-012-001, Gull Airborne Instruments Inc., 55 Engineers Road, Smithtown, N.Y. 11787
(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)
F72731-115 - center tank
(b)
F72731-117 - tanks No. 1 and No. 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
(2)
Access Panels
6540 Refueling Station Access Door
D. Prepare for the Trim
S 865-014-001
(1)
Connect the external electrical power (AMM 24-22-00/201).
S 655-015-001
(2)
Remove all the fuel from the fuel tank, and remove the fuel in the sumps (AMM 28-23-00/201).
NOTE: If you do the trim for only one tank, you can move the
____
fuel into the other tanks.
S 865-016-001
(3) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Main Power Distribution Panel
1) EP GND FUELING
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
AIRPLANES WITH ANALOG FUEL QUANTITY ú 28-41-00
INDICATORS ú CONFIG 1 ú 01A Page 503 (GULL SYSTEM TESTER) ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
2) QTY
S 485-017-001
(4) Connect the test equipment.
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