(g)
Set the 10s thumbwheel of COMP SIM PF to 4.
(h)
Turn the 0-10 knob until the meter shows the minimum value.
NOTE: If you turn the knob to a position farther than the
____ correct position, the value on the meter increases.
(i) Turn the D.F. CONTROL knob until the meter shows the minimum value.
NOTE: If you turn the knob to a position farther than the
____ correct position, the value increases. The D.F. CONTROL has very little effect for capacitances below approximately 50 pF. The test unit is more sensitive to adjustment of the D.F. CONTROL for larger capacitances.
(j)
Release the COMP CAL switch.
(k)
Set the battery switch to OFF.
(l)
Set the TANK CAP PF thumbwheels to the applicable added capacitance value:
NOTE: This is the capacitance value added to the empty
____ tank capacitance by the test unit to simulate a full tank.
TANK ADDED CAPACITANCE (pf) No. 1 and 2 *[1] 568.8 Center *[1] 191.0
No. 1 and 2 *[2] 569.9
Center *[2] 190.5
*[1] Fuel quantity indication in pounds
*[2] Fuel quantity indication in kilograms
(m) Set the FUNCTION switch to CAP SIM 1.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
AIRPLANES WITH ANALOG FUEL QUANTITY ú 28-41-00
INDICATORS ú CONFIG 3 ú 01A Page 509 (BARFIELD SYSTEM TESTER) ú Nov 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
(n)
Connect a tee between the test harness wires that have the COAXIAL label.
(o)
Connect the tee to the HI-Z COAX receptacle on the system test unit.
(p)
Connect a tee between the test harness wires that have the UNSHIELDED label.
(q)
Connect the tee to the LO-Z TANK receptacle on the system test unit.
(r)
Connect a tee between the test harness wires that have the COMP label.
(s)
Connect the tee to the LO-Z COMP receptacle on the system test unit.
(t)
Set the battery switch to ON.
S 975-023-003
(4) Do a check of the values shown on the indicator with a full tank.
(a)
Connect the test harness to the rear of the fuel quantity indicator.
(b)
Close the QTY and the EP GND FUELING circuit breakers and let the system become warm for five minutes.
(c)
Make sure the fuel quantity indicator shows the applicable full value with the tolerance in this table: TANK FULL VALUE
No. 1 and 2 *[1] 11000 |110 lb Center *[1] 16800 |170 lb
No. 1 and 2 *[2] 5000 |50 kg
Center *[2] 7600 |80 kg
*[1] Fuel quantity indication in pounds
*[2] Fuel quantity indication in kilograms
(d)
Write the value shown on the fuel quantity indicator.
(e)
Open the access door for the refuel control panel (P15).
(f)
Write the value shown on the applicable refuel quantity indicator.
S 975-024-003
(5)
Compare the values on the fuel quantity indicator and the refuel quantity indicator.
(a) The values must be the same with a tolerance of |50 pounds (|20 kilograms).
(6)
Do the task, "Operational Test - Fuel Quantity Indicating System".
S 085-026-003
(7)
Remove the test equipment.
S 715-025-003
(a) Open the QTY and EP GND FUELING circuit breakers.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
AIRPLANES WITH ANALOG FUEL QUANTITY ú 28-41-00
INDICATORS ú CONFIG 3 ú 03A Page 510 (BARFIELD SYSTEM TESTER) ú Nov 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
FUEL QUANTITY
TO COMPENSATOR
INDICATOR
AND TANK UNITS
TESTER
BATTERY COAXIAL COMP
SWITCH
METER
ADJUST ON
INDICATOR
OFF
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(61)
