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A 737-300/400/500MAINTENANCE MANUAL
NOT OK
OK
Total fuel quantity is not equal to the total of all the fuel quantity indicators with a tolerance of |100 pounds (|50 kilograms).
Troubleshooting for the Fuel Quantity Indicating System
Figure 101 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
NOT OK
NOT OK
NOT OK
A REFUEL QUANTITY INDICATOR (ON THE P15 PANEL) SHOWS THE
NOT OK
ERROR CODE F - Do a check of the fuel quantity indicator for an error code.
OK
Fuel quantity indicating system operates correctly.
Troubleshooting for the Fuel Quantity Indicating System
Figure 101 (Sheet 3)
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A 737-300/400/500MAINTENANCE MANUAL
PROCEDURE 1
PROCEDURE 2
Procedure 1/Procedure 2
Figure 102
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A 737-300/400/500MAINTENANCE MANUAL
PROCEDURE 3
Procedure 3
Figure 103
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A 737-300/400/500MAINTENANCE MANUAL
PROCEDURE 4
Procedure 4
Figure 104
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E82123
A 737-300/400/500MAINTENANCE MANUAL
FUEL QUANTITY INDICATING SYSTEM - ADJUSTMENT/TEST
_________________________________________________
1. General_______
A. This procedure has these tasks:
(1)
A test for the correct operation of the fuel quantity indicating system
(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 panel on the wing.
C. Do a check of the value on the applicable fuel quantity indicator after you replace one of these components:
(1)
The fuel quantity indicator
(2)
The tank unit
(3)
The compensator
(4)
The wire bundle
(5)
The capacitance trimmer.
D. Compare the value to this table to see if you must do the trim procedure or the system test of the fuel quantity indicating system.
NOTE: You must do this check before you put the fuel in the tank.
____
~...................................................................... | | 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
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