737-300 400 500 AMM 飞机维护手册 燃油 FUEL 3(62)

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INS TEST POINTS  BATT 
GND/HI-Z  SH/LO-Z  TEST 
GND/LO-Z  SH/HI-Z 
GND/SH  LOZ/HI-Z 
TEST FUNCTION 
.1  INDICATOR  CAP BRIDGE 
INSULATION  1  CAP SIM  UNSHIELDED 
HI-Z  .01 RANGE  2  TANK CAP pf  HI-Z COAX 
1  7  4  5 
LO-Z  LO-Z 
TANK 
0-10 
100 10 
GND  1  7  COMP  0-10 
D.F. 
PRESS TO  KNOB 
MEASURE  COMP SIM pf 
COMP 
CAL 
CAL COMP 
BUTTON 
NO GROUND 
LEAD  TEST  COMP SIM 
CONNECTED  FUNCTION  THUMBWHEELS 
SWITCH  TANK CAP 
D.F.  THUMBWHEELS 
CONTROL 
KNOB 
BARFIELD SYSTEM TESTER 

Test Equipment Set-Up for Capacitance Simulation
Figure 503

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 AIRPLANES WITH ANALOG FUEL QUANTITY ú 28-41-00
 INDICATORS  ú  CONFIG  3
 ú  01A  Page 511
 (BARFIELD SYSTEM TESTER)  ú  Jul 15/91 

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (b)  
Disconnect the test harness from the rear of the fuel quantity indicator and the airplane wire bundle.

 (c)  
Connect the airplane wire bundle to the rear of the fuel quantity indicator.

 (d)  
Install the fuel quantity indicator in the pilots' panel and tighten the clamp screw.

 S 865-027-003
 (8) Close these circuit breakers and remove the DO-NOT-CLOSE tags:
 (a)  P6 Main Power Distribution Panel
 1) EP GND FUELING
 2) QTY

 S 975-028-003
 (9)  Do a check of the fuel quantity indicator values with an empty tank.
 (a)  
Make sure the fuel quantity indicator shows a value of zero

 with the applicable tolerance: Tanks No. 1 and 2 +110/-0 lbs (+50/-0 kgs) Center Tank +170/-0 lbs (+80/-0 kgs)

 (b)  
Write the value shown on the fuel quantity indicator.

 (c)  
Open the access panel for the refuel control panel (P15), if the door is closed.

 (d)  
Write the value shown on the applicable refuel quantity indicator.

 (e)  
Compare the values on the fuel quantity indicator and the refuel quantity indicator.

 (f)  
The values must be the same with a tolerance of |50 pounds (|20 kilograms).

 F. Put the Airplane Back to Its Usual Condition
 S 415-029-003
 (1)  
Close the access door for the refuel control panel (P15).

 S 865-030-003

 (2)  
Remove the electrical power, if it is not necessary for other tasks (AMM 24-22-00/201).

 TASK 28-41-00-825-031-003
 4.  System Test - Fuel Quantity Indicating System_____________________________________________
 A. Equipment
 (1)  
System test unit - Model 8000, Barfield Instrument Corp., Miami, Florida 33142

 (2)  
Test harnesses

 NOTE:____You must control the quality of the test cables. Make sure the stray capacitance of the test cables is less than
 0.2 pf.
 (a)  
F72731-119 - center tank

 (b)  
F72731-121 - tanks No. 1 and 2

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 AIRPLANES WITH ANALOG FUEL QUANTITY ú  28-41-00
 INDICATORS ú CONFIG 3 ú 01A Page 512 (BARFIELD SYSTEM TESTER) ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 B.
C.
D.

A
737-300/400/500MAINTENANCE MANUAL
References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 27-81-00/201, Leading Edge Flaps and Slats

 (3)  
AMM 28-23-00/201, Defueling

 (4)
AMM 28-41-81/401, Fuel Summation UnitAccess

 (1)  
Location Zones 101 Control Cabin, Left 217 Right Main Wheel Well 303 Left Wing Inboard Leading Edge 402 Right Wing Outboard Leading Edge 403 Right Wing Inboard Leading Edge
　
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