(b)  
Set the FUNCTION MEASURE switch (PSD40-1) or SELECT switch (PSD60-1) to COMP.

 (c)  
Adjust the SIMULATOR COMP decade capacitor (D2) and the vernier knob (V2) until the test unit shows 41.4 pf.

 NOTE: This is the capacitance value added to the empty
____ tank capacitance by the test unit to simulate a full tank.
 (d)  Set the FUNCTION MEASURE switch (PSD40-1) or the SELECT switch (PSD60-1) to TU.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 AIRPLANES WITH ANALOG FUEL QUANTITY ú  28-41-00
 INDICATORS ú CONFIG 2 ú 02A Page 524 (SIMMONDS SYSTEM TESTER) ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (e)  Adjust the SIMULATOR TU decade capacitor (D1) and the vernier knob (V1) until the test unit display shows 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

 (f)  Set the FUNCTION SEL switch to SIM (PSD40-1) or set the FUNCT switch to SIM TU & COMP (PSD60-1).
 S 975-046-002
 (7)  Do a check of the fuel quantity indicator values with a full tank.
 (a)  
Connect the test harness to the rear of the fuel quantity indicator.

 (b)  
Close the QTY and 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 applicable tolerance: 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.

 (g)  
Compare the values on the fuel quantity indicator (in the control cabin) and the values on the refuel quantity indicator (on the P15 panel). 1) The values must be the same with a tolerance of |50 pounds

 (|20 kilograms).
 S 715-047-002
 (8)  Do the task: "Operational Test - Fuel Quantity Indicating System".
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 AIRPLANES WITH ANALOG FUEL QUANTITY ú  28-41-00
 INDICATORS ú CONFIG 2 ú 02A Page 525 (SIMMONDS SYSTEM TESTER) ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 865-048-002
 (9)  
Open the QTY and EP GND FUELING circuit breakers.

 S 085-049-002

 (10)
 Remove the test equipment.

 (a)  
Disconnect the test harness from the rear of the fuel quantity indicator and the airplane wire bundle.

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

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

 S 865-050-002
 (11) Close these circuit breakers and remove the DO-NOT-CLOSE tags:
 (a)  P6 Main Power Distribution Panel
 1) EP GND FUELING
 2) QTY

 S 975-051-002
 (12) Do a check of the values on the fuel quantity indicator 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 panel is closed.
　
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