1) Provide a dc voltage proportional to fuel flow rate indicated by the digital display to supply the fuel flow data to the data recording and reporting systems if installed.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
DATA RECORDING AND REPORTING SYSTEMS.
Analog Fuel Flow Indicating System SchematicFigure 4
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CFM56 ENGINES
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FUEL FLOWTRANSMITTER MAN SET
N1
%RPM
120 120
102 102
88
44
28V DC
66
BATT BUS
POWER
+V
EIS-PRI 3
SUPPLY EGT
N2%RPM
FUEL FLOW
0-5
TRANSMITTER FF OUTPUT
1
VDC ENGINE 2
FUELUSEDPUSH
FF/FUX1000
120 120 111 111
BUTTONENGINE 2 FUEL FLOW/USED INDICATOR
(10 SEC)
PULL10 2 10 2PULLTO93 93TO
SET84 84 SETN1
FUEL
75 75
ENGINE 1 FUEL FLOW/USED INDICATOR
66
N1
USEDRESET
PUSH FUEL USEDRESET
PPHLB
BUTTON
0-5
FF OUTPUT
1
VDC
FUEL FLOW
TRANSMITTER
POWER
ENGINE 1
28V DC
+V BATT BUS
SUPPLY EIS-PRI 1
P6 LOAD CONTROL CENTER
P2 PRIMARY ENGINE DISPLAY UNIT1
MAY BE USED TO SUPPLY FUEL FLOW DATA TO THE
DATA RECORDING AND REPORTING SYSTEMS.
Digital Fuel Flow Indicating System SchematicFigure 4A
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
2) Indicate failure or a low voltage of the 28v dc supply as determined by the internal BITE test of the primary engine display unit (AMM 31-42-00/501).
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FUEL FLOW TRANSMITTER - REMOVAL/INSTALLATION
____________________________________________
1. General
_______
A. There are two tasks in this procedure.
(1)
Remove the fuel flow transmitter.
(2)
Install the fuel flow transmitter.
TASK 73-31-01-004-001-C00
2. Remove the Fuel Flow Transmitter
________________________________
A. Consumable Materials
(1) Kerosene (AMM 70-10-01/201)
B. References
(1)
AMM 70-10-01/201, Consumable Materials
(2)
AMM 71-11-02/201, Fan Cowl Panels
C. Access
(1)
Location Zones
506 Engine No. 1 - 10 o'clock position
606 Engine No. 2 - 10 o'clock position
(2)
Access Panels
5746L/5846R Left Fan Cowl Panel
D. Procedure (Fig. 401)
S 864-027-C00
(1) AIRPLANES WITHOUT THE ENGINE INSTRUMENT SYSTEM; Do these steps to remove the electrical power from the fuel flow transmitter:
(a)
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