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28-41-86
ALL ú ú 01 Page 404 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
FUEL QUANTITY INDICATING SYSTEM TOTAL RESISTANCE - INSPECTION/CHECK
___________________________________________________________________
1. General_______
A. This procedure has one task, a resistance check of the fuel quantity indicating system (FQIS).
B. A resistance check of the all the fuel quantity indicating system is a good, quick procedure to do a check of the system. It is also a good procedure to prepare for the trouble-shooting. A low resistance is an indication of a short circuit in the subsystem, wire bundles, tank unit or compensator unit. A high resistance is an indication of an open circuit (broken wire or bad terminal contacts).
C. The resistance check in this procedure does not replace the FQIS adjustment/test. If you think the indicator precision is bad, refer to the applicable FQIS adjustment/test.
TASK 28-41-91-766-001-001
2. Fuel Quantity Indicating System Resistance Check________________________________________________
A. Special Tools and Equipment
(1)
System Tester
use one of these:
(a)
Model GTF-2, P/N 361-012-001, Gull Airborne Instruments, Inc., 55 Engineers Road, Smithtown, New York, 11787
(b)
Model PSD 40-1 or PSD 60-1, Simmonds Precision Products Inc., Panton Road, Vergennes, Vermont 05491
(c)
Model 8000, Barfield Instrument Corp., Miami, Florida 33142
(2)
Test Harness - F72731-81
B. References
(1)
AMM 12-11-00/301, Fuel Servicing
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 27-81-00/201, Leading Edge Flap and Slat Control System
(4)
AMM 28-23-00/201, Defueling
(5)
AMM 28-41-03/501, Fuel Quantity Indicating System
(6)
AMM 28-41-21/501, Tank and Compensator Units
C. Access
(1) Location Zones
218 Aft Cargo Compartment
221 Center Section Fuel Tank
305 Fuel Tank (Left)
405 Fuel Tank (Right)
D. Prepare for the Resistance Check
S 866-002-001
(1) Supply electrical power (AMM 24-22-00/201).
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AIRPLANES WITHOUT ISOLATED FUEL QUANTITY ú 28-41-91
TRANSMITTER (IFQT) ú CONFIG 1
ú 01 Page 601
ú Mar 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 866-003-001
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAPS. THE FLAPS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Extend the leading edge flaps (AMM 27-81-00/201).
S 496-004-001
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO
_______ INSTALL THE LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT INSTALL THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3)
Install the flap locks on the leading edge flaps (AMM 27-81-00/201).
S 656-005-001
(4)
Defuel the applicable tank or tanks and drain the sump fuel
(AMM 28-23-00/201).
S 866-006-001
(5)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Main Power Distribution Panel
1) EP GND FUELING
2) QTY
E. GULL TESTER, MODEL GTF-2; Do the Resistance Check 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 燃油 FUEL 3(150)
