(2)
A system trim
(3)
A system test
B. To do the test for the correct operation, you push the test switch in the control cabin and make sure the indicators operate. You do this procedure again at the P15 refuel panel on the wing.
C. After you replace one of these components, you must do a check of the value on the applicable fuel quantity indicator:
(1)
The fuel quantity indicator
(2)
The tank unit
(3)
The compensator
(4)
The wire bundle
(5)
The capacitance trimmer.
D. With an empty fuel tank, compare the value on the applicable indicator to this table to see if you must do the trim procedure or the full system test of the fuel quantity indicating system.
~...................................................................... | | ACTION REQUIRED | | ...................................................... | TANKS | | TRIM | SYSTEM TEST | | | NONE | (Ref Par. 3) | (Ref Par. 4) | ........................................................................ | 1 & 2 | 0 to +110 lbs | +110 to +200 lbs | over 200 lbs | | | 0 to +50 kgs | +50 to +100 kgs | over 100 kgs | ........................................................................ | CENTER | 0 to +170 lbs | +170 to +300 lbs | over 300 lbs | | | 0 to +80 kgs | +80 to +150 kgs | over 150 kgs | 2.................…................…..................…................1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
AIRPLANES WITH ANALOG FUEL QUANTITY ú 28-41-00
INDICATORS ú CONFIG 2 ú 02A Page 501 (SIMMONDS SYSTEM TESTER) ú Jul 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
E. If you replace the fuel summation unit, no adjustment of the unit is 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 28-41-00-715-001-002
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 865-002-002
(1) Make sure these circuit breakers are closed:
(a) P6 Main Power Distribution Panel
1) EP GND FUELING
2) QTY
S 975-003-002
(2)
Write the values shown on the fuel quantity indicators.
S 715-004-002
(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 715-007-002
(6)
Make sure the fuel quantity indicators show the same value you wrote before this step with a tolerance of 50 pounds (25 kgs).
S 715-005-002
S 715-006-002
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
AIRPLANES WITH ANALOG FUEL QUANTITY ú 28-41-00
INDICATORS ú CONFIG 2 ú 02A Page 502 (SIMMONDS SYSTEM TESTER) ú Jul 15/91
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