Smiths BOEING B737-100 Maintenance Manual Supplement Download Page 58

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Smiths Aerospace

Electronic Systems – Malvern

DOC NO.0134ED

MAINTENANCE MANUAL SUPPLEMENT

BOEING B737-100/200/300/400/500

28-41-04

DIGITAL CALIBRATION TRIM UNIT – REMOVAL/INSTALLATION

1. General

A. This procedure has two tasks:

(1) A task to remove the digital calibration trim unit (DCTU).

(2) A task to install the DCTU.

2. Digital Calibration Trim Unit (DCTU) Removal

A. Access

(1) Location Zone

(a) 101

Control Cabin Left

(b) 102

Control Cabin Right

B. Procedure

(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:

(a) P6 Main Power Distribution Panel

1) EP GND FUELING

2) FUEL

QTY

(2) Loosen the clamp screw of the applicable fuel quantity indicator.

(3) Move the fuel quantity indicator and the DCTU away from the panel.

(4) Loosen the screw on the cover of the DCTU.

(5) Move the cover back to the airplane wire bundle.

(6) Disengage the DCTU from the rear of the fuel quantity indicator.

(7) Keep the fuel quantity indicator for the subsequent installation.

(8) At the rear of the DCTU, disconnect the electrical connector that goes to the airplane wire bundle.

Page 405

Apr 19/02

Airplanes with Smiths 2307 Model Fuel Quantity
Indicators with TSU

EFFECTIVITY

Summary of Contents for BOEING B737-100

Page 1: ...Smiths Aerospace Electronic Systems Malvern BOEING B737 100 200 300 400 500 Dec 18 2002 DOC NO 0134ED Rev F DIGITAL FUEL QUANTITY INDICATORS With TRANSIENT SUPPRESSION UNIT MAINTENANCE MANUAL SUPPLEMENT ...

Page 2: ...ation modification to fuel system wiring The alternate means of compliance is achieved by the installation of Smiths Aerospace Inc Transient Suppression Units TSU The TSU is inserted in the wiring of the Fuel Quantity Indication System FQIS between the in tank components capacitance probes and the compensators and the Fuel Quantity Indicators located in the cockpit and refueling stations The TSUs ...

Page 3: ...4 5 Apr 19 02 0132 ED 28 41 04 6 Apr 19 02 0132 ED 28 41 04 7 Apr 19 02 0132 ED 28 41 04 8 Apr 19 02 0132 ED 28 41 04 9 Apr 19 02 0132 ED 28 41 04 10 Apr 19 02 0132 ED 28 41 04 11 Apr 19 02 0132 ED 28 41 04 12 Apr 19 02 0132 ED 28 41 04 13 Apr 19 02 0132 ED 28 41 04 14 Dec 18 02 0132 ED 28 41 04 15 Dec 18 02 0132 ED 28 41 04 16 Dec 18 02 0132 ED 28 41 04 101 Apr 19 02 0132 ED 28 41 04 102 Apr 19 0...

Page 4: ...6 Apr 19 02 0132 ED 28 41 04 407 Apr 19 02 0132 ED 28 41 04 408 Apr 19 02 0132 ED 28 41 04 409 Apr 19 02 0132 ED 28 41 04 410 Apr 19 02 0132 ED 28 41 04 411 Apr 19 02 0132 ED 28 41 04 412 Apr 19 02 0132 ED 28 41 04 413 Apr 19 02 0132 ED 28 41 04 414 Apr 19 02 0132 ED 28 41 04 415 Apr 19 02 0132 ED 28 41 04 501 4 1 July 15 02 0132 ED 28 41 04 502 4 1 Dec 18 02 0132 ED 28 41 04 503 4 1 Dec 18 02 013...

Page 5: ...D 28 41 04 516 4 2 Apr 19 02 0132 ED 28 41 04 517 4 2 Apr 19 02 0132 ED 28 41 04 518 4 2 Apr 19 02 0132 ED 28 41 04 519 4 2 Dec 18 02 0132 ED 28 41 04 520 4 2 July 15 02 0132 ED 28 41 04 521 4 2 July 15 02 0132 ED 28 41 04 522 4 2 Apr 19 02 0132 ED 28 41 04 523 4 2 July 15 02 0132 ED 28 41 04 524 4 2 July 15 02 0132 ED 28 41 04 525 4 2 July 15 02 0132 ED 28 41 04 526 4 2 Apr 19 02 0132 ED 28 41 04...

Page 6: ...AGE REPRODUCTION OF INFORMATION OR ILLUSTRATIONS CONTAINED IN THE PUBLICATION IS NOT PERMITTED WITHOUT WRITTEN PERMISSION LEP PAGE 4 Dec 18 02 DOC NO 0134ED REV F E O NUMBER CHAPTER SECTION SUBJECT PAGE DATE 0132 ED 28 41 04 521 4 3 Apr 19 02 0132 ED 28 41 04 522 4 3 Apr 19 02 0132 ED 28 41 04 523 4 3 Apr 19 02 ...

Page 7: ...oting 101 All Removal Installation Fuel Quantity Indicating System 401 All Removal Installation Fueling Quantity Indicator 403 All Removal Installation Digital Calibration Trim Unit 405 All Removal Installation Digital Calibration Trim Unit Cover and Label 408 All Removal Installation V Ref Totalizer 411 All Removal Installation Fuel Summation Unit 412 All Removal Installation Transient Suppressio...

Page 8: ...y shown by the fuel quantity indicators in the control cabin The refuel quantity indicators operate only when the access door for the refuel station is open 3 Each fuel or refuel quantity indicator is universal It can be used to supply indication for any fuel tank however a refuel quantity indicator from the refuel panel on the wing cannot be installed in the control cabin Likewise a fuel quantity...

Page 9: ...OC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location EFFECTIVITY Figure 1 Sheet 1 Page 2 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU ...

Page 10: ...OC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 1 Sheet 2 Page 3 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 11: ...rn DOC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 2 Page 4 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 12: ...OC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 3 Sheet 1 Page 5 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 13: ...OC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 3 Sheet 2 Page 6 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 14: ...vern DOC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Measuring Stick Extended Position Example Figure 4 EFFECTIVITY Page 7 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU ...

Page 15: ...rn DOC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 5 Page 8 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 16: ...rn DOC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Schematic Figure 6 Sheet 1 Page 9 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 17: ...rn DOC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Schematic Figure 6 Sheet 2 EFFECTIVITY Page 10 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU ...

Page 18: ... 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Schematic Figure 6 Sheet 3 EFFECTIVITY 2 Tank Unit Fig 3 Page 11 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU ...

Page 19: ...tank also keeps these errors to a minimum C Tank units are attached to wing ribs in the No 1 and No 2 tanks and to spanwise beams in the center tank Access to the tank units is through fuel tank access openings Electrical connections to the tank units are made at the tank unit terminals Tank unit leads in a given fuel tank form a harness that terminates at a receptacle The receptacles for the No 1...

Page 20: ...DE INDICATOR READING CAUSE 1 Normal An open circuit or a short circuit in the COMP LO Z wiring 2 2 Zero A short circuit in the compensator unit HI Z to COMP LO Z 3 Normal Too much leakage in the compensator unit 4 Zero An open circuit or short to ground in one of the LO Z wires to the tank units 2 3 5 Zero A short circuit in one of the tank units HI Z to TANK LO Z 6 Normal Too much leakage in a ta...

Page 21: ...ors in the flight compartment show ERR and log error code 1 into memory if the switch is held for at least 30 seconds TYPE 2120 REFUEL QUANTITY INDICATOR ERROR REFUEL QUANTITY PROBABLE CODE INDICATOR READING CAUSE 5 0 Zero Bad indicator 6 0 Zero Bad indicator 7 0 Zero Fuel quantity indicator shows an error 8 0 Zero Signal from fuel quantity indicator erroneous or missing NOTE When the indicator te...

Page 22: ...ticks are also used to compare the fuel weight shown by the fuel quantity indicators to the value shown by the fuel measuring sticks to make sure the fuel quantity indicator operates correctly C To operate the fuel measuring stick see Figure 4 the fuel measuring stick is unlocked from the base by applying a slight pressure and a 90 degree counterclockwise turn to the end of the stick sub assembly ...

Page 23: ...icator does a capacitance measurement with a sine wave The fuel quantity Indicator microcomputer feeds a sine wave to the tank units and a sine wave that is 180 degrees out of phase with the tank unit sine wave to the compensator unit The microcomputer measures the capacitance of the tank units first against an internal virtual compensator This is done by adjusting the drive voltage to the interna...

Page 24: ...error codes NOTE Incorrect error codes can be shown if a component of the fuel quantity indicating system is disconnected 1 If a problem with the FQIS occurs that is sufficiently bad that the system cannot find the fuel quantity the indicator shows ERR in the error legend and a fuel quantity of 0 This display shows that the system has a hard fault This type of fault can be a problem in one of the ...

Page 25: ...asier procedures to find problems with the fuel quantity indicating system before you do the longer trouble shooting procedure NOTE This will keep the time necessary to do the trouble shooting to a minimum Use the longer trouble shooting procedure only if these steps do not find the problem 1 The integrity of the Hi Z shields is very important because they provide the ground path from the TSU to t...

Page 26: ...and on the tank units and the compensator units 4 One of the tank units has a short circuit to ground because it touches the structure tubing or bonding straps in the fuel tank 5 The circuit for the electrical signal from the tank unit is open or intermittent because of these problems a A terminal screw that is not installed b A terminal screw is loose c The incorrect terminal screw was installed ...

Page 27: ...ake sure these circuit breakers are closed a On the main power distribution panel P6 1 EP GND FUELING 2 FUEL QTY 3 CAPT AND CTR PANEL AND INSTR LIGHT b On the P18 panel the circuit breakers for the FMC computer and related equipment 1 MCDU No 1 2 FMCS CMPTR No 1 c P6 1 panel 1 MCDU No 2 2 FMCS CMPTR No 2 3 FMCS XFER Page 104 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators wit...

Page 28: ... for approximately 2 seconds Then the display shows the full tank quantity for approximately 2 seconds Then the display shows its initial value with a tolerance of 20 pounds 20 kilograms IF OK THE INDICATOR DOES NOT DO THE SELF TEST Replace the fuel QTY TEST switch S257 THE FUEL QUANTITY INDICATOR SHOWS ERROR CODE 1 DURING THE SELF TEST FIG 102 THE FUEL QUANTITY INDICATOR SHOWS ERROR CODE 2 DURING...

Page 29: ...trim unit DCTU on the rear of the fuel quantity indicator AMM 28 41 04 501 THE FUEL QUANTITY INDICATOR SHOWS ERROR CODE 9 DURING THE SELF TEST Replace the fuel quantity indicator AMM 28 41 04 401 THE FUEL QUANTITY INDICATOR SHOWS ERROR CODE 10 DURING THE SELF TEST FIG 108 THE FUEL QUANTITY INDICATOR SHOWS EXCESSIVE FLUCTUATIONS FIG 109 NOT OK NOT OK NOT OK NOT OK NOT OK OK CONTINUE SHEET 3 VREF TO...

Page 30: ...rrect IF VREF totalizer is inoperative FIG 110 Total fuel quantity from the VREF totalizer is not equal to the total of all the fuel quantity indicators with a tolerance of 100 pounds 50 kilograms FIG 111 NOT OK NOT OK CONTINUE ON SHEET 6 FOR 2101 REFUEL INDICATOR SHEET 7 FOR 2120 REFUEL INDICATOR OK Flap reading and or Landing Ref Speed reading from VREF Totalizer is not correct FIG 112 NOT OK Tr...

Page 31: ...B737 100 200 300 400 500 28 41 04 CONTINUE ON SHEET 6 FOR 2101 REFUEL INDICATOR SHEET 7 FOR 2120 REFUEL INDICATOR Troubleshooting for the Fuel Quantity Indicating System WITH FMCS Figure 101 Sheet 4 Page 108 Dec 18 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 32: ...shown must be equal to the total of all the fuel quantity indicators with a tolerance of 100 pounds 50 kilograms IF RCL Total fuel quantity is not equal to the total of all the fuel quantity indicators with a tolerance of 100 pounds 50 kilograms FIG 115 NOT OK OK CONTINUE ON SHEET 6 FOR 2101 REFUEL INDICATOR SHEET 7 FOR 2120 REFUEL INDICATOR Troubleshooting for the Fuel Quantity Indicating System ...

Page 33: ...NTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Troubleshooting for the Fuel Quantity Indicating System 2101 Refuel Indicator Figure 101 Sheet 6 Page 110 Dec 18 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 34: ...NTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Troubleshooting for the Fuel Quantity Indicating System 2120 Refuel Indicator Figure 101 Sheet 7 Page 110A Dec 18 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 35: ...egohm 500 megohm Measure resistance from Comp Lo Z to GND at the indicator connector 1 Replace Repeater Indicator AMM 28 41 04 401 Error cleared Error persists Remove Summation Unit if equipped and confirm error persists Replace Summation Unit AMM 28 41 04 401 Error cleared Error persists Remove Vref Totalizer if equipped and confirm error persists Replace Vref Totalizer AMM 28 41 04 401 Error cle...

Page 36: ...ace Electronic Systems Malvern DOC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Page 112 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 37: ...ound in tank harness WDM 28 41 01 500 megohm 500 megohm Measure resistance from Comp Lo Z to GND at tank wall Repair open Comp Lo Z line in A C harness WDM 28 41 01 1 2 Repair fault to shield in A C harness WDM 28 41 01 500 megohm 500 megohm Measure resistance from Comp Lo Z to Hi Z shield at the indicator connector AMM 28 41 04 501 Err 1 Comp Lo Z Line Open or Short continued Figure 102 Sheet 2 P...

Page 38: ...nk Measure value of compensator at tank wall per AMM 28 41 21 Replace TSU AMM 28 41 04 401 Repair Replace Tank harness and or Compensator AMM 28 41 44 401 AMM 28 41 21 401 2 Repair fault to Hi Z shield in tank harness AMM 28 41 44 401 500 megohm 500 megohm Operational Test AMM 28 41 04 501 Err 1 Comp Lo Z Line Open or Short continued Figure 102 Sheet 3 Page 114 April 19 02 Airplanes with Smiths 23...

Page 39: ... Hi Z at the indicator connector AMM 28 41 04 501 Repair Replace Tank Harness and or Compensator AMM 28 41 44 401 AMM 28 41 21 401 500 megohm 500 megohm Measure resistance from Comp Lo Z to Hi Z at tank wall Clear FQI errors and confirm error persists Remove TSU from tank wall AMM 28 41 04 401 Replace TSU AMM 28 41 04 401 Operational Test AMM 28 41 04 501 Err 2 Comp Lo Z Line Short to Hi Z Figure ...

Page 40: ... 401 Repair Replace tank harness and or compensator AMM 28 41 44 401 AMM 28 41 21 401 500 megohm 500 megohm Replace TSU AMM 28 41 04 401 Drain sump to remove water from tank AMM 28 41 21 501 Return to service Error cleared Error persists Remove master indicator Disconnect A C Harness from TSU AMM 28 41 04 401 Measure resistance from Comp Lo Z to Hi Z at tank wall Operational Test AMM 28 41 04 501 ...

Page 41: ...ndicator connector Clear FQI errors and confirm error persists 5 ohm 5 ohm Determine Continuity of Tank Lo Z line from indicator connector to tank wall connector Repair open Tank Lo Z line in A C harness WDM 28 41 01 1 Repair fault to Hi Z Shield in A C harness WDM 28 41 01 50 megohm 50 megohm Measure resistance from Tank Lo Z to Hi Z Shield at the indicator connector Err 4 Tank Lo Z Line Open or ...

Page 42: ...lt to Hi Z shield in tank harness or replace AMM 28 41 44 401 50 megohm 50 megohm Remove TSU harness from tank wall bussing connector WDM 28 41 01 Repair fault to ground in tank harness 50 megohm 50 megohm Measure resistance from Tank Lo Z to GND at tank wall Abnormal dry capacitance Normal Repair Replace tank harness AMM 28 41 44 401 Repair Replace applicable tank unit or compensator harness AMM ...

Page 43: ...ing plug and measure resistance across individual tank units 50 megohm 50 megohm Measure resistance from Tank Lo Z to Hi Z at tank wall Clear FQI errors and confirm error persists Remove TSU harness from tank wall bussing connector Replace TSU AMM 28 41 04 401 Repair Replace applicable tank unit harness AMM 28 41 81 401 50 megohm 50 megohm Repair Replace Harness AMM 28 41 44 401 Operational Test A...

Page 44: ...ce across individual tank units 50megohm 50 megohm Replace TSU AMM 28 41 04 401 Drain sump to remove water from tank AMM 28 23 00 301 Return to service Error cleared Error persists Remove master indicator AMM 28 41 04 401 Disconnect A C Harness from TSU Measure resistance from Tank Lo Z to Hi Z at tank wall Repair Replace applicable tank unit harness AMM 28 41 81 401 50megohm 50 megohm Repair Repl...

Page 45: ...onnector AMM 28 41 04 501 Clear FQI errors and confirm error persists 5 ohm 5 ohm Determine Continuity of Hi Z line from indicator connector to tank wall connector Repair Replace open Tank Lo Z line in A C harness AMM 28 41 44 401 1 Repair fault to Hi Z Shield in A C harness WDM 28 41 01 50 megohm 50 megohm Measure resistance from Hi Z to Hi Z Shield at the indicator connector Err 10 Hi Z Line Ope...

Page 46: ...TSU AMM 28 41 04 401 Repair Replace tank harness AMM 28 41 44 401 1 Repair Replace fault to Hi Z shield in tank harness AMM 28 41 44 401 50 megohm 50 megohm Remove TSU harness from tank wall bussing connector Repair fault to ground in tank harness WDM 28 41 01 50 megohm 50 megohm Measure resistance from Hi Z to GND at tank wall Operational Test AMM 28 41 04 501 Err 10 Hi Z Line Open or Short conti...

Page 47: ...round stud to airframe Repair AMM 28 41 04 401 8 miliohms 8 miliohms Repair AMM 28 41 04 401 Replace Master Indicator Cleared Persist Remove Master Indicator and DCTU Measure Hi Z shield to ground resistance Check TSU bond to airframe 1 ohm 1 ohm Repair Hi Z shield WDM 28 41 01 8 miliohms 8 miliohms Replace TSU AMM 28 41 04 401 Operational Test AMM 28 41 04 501 Excessive Fluctuations Figure 109 Pa...

Page 48: ...or break in indicator power cable between splice inside P2 1 module in center instrument panel and indicator connector plug Repair or replace cable Remove power to VREF Totalizer and reapply Monitor if display blanks after 15 seconds of normal operation IF OK OK Check wiring at plug connector and correct as necessary per wiring diagram Determine if voltage exists on Pins 3 9 3 10 3 15 IF Determine...

Page 49: ...g properly IF Check that all master gauges are set to the same units LBS or KG IF Make necessary repairs to eliminate errors or replace master indicator as necessary AMM 28 41 04 401 Replace master indicator AMM 28 41 04 401 Reset master gauges REF 28 41 04 501 OK OK VREF Totalizer Total Fuel Quantity Error Figure 111 Page 125 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators w...

Page 50: ...alizer and set FLAP SELECTOR switch to correct position AMM 28 41 04 401 737 100 200 BASIC 25 737 200 ADV 15 Remove VREF Totalizer and check that wiring of Pins 13 and 14 is correct per wiring diagram Correct wiring problems Check for wiring intermittent connections and correct OK OK NOT OK NOT OK VREF Totalizer Flap or Landing Speed Error Figure 112 Page 126 April 19 02 Airplanes with Smiths 2307...

Page 51: ...MCS sensor status page displays on the FMCS CDU AMM 22 02 10 101 FUEL SUM will say OK or FAIL OK indicates fuel summation unit FSU is able to send data to Digital to analog adapter DAA FAIL indicates one or more of the signals to the DAA is not being received from the FSU IF NOT OK Select HDG STS on the IRS Inertial System Display Unit ISDU AMM 34 28 01 101 If code 05 is displayed replace left DAA...

Page 52: ...th TSU EFFECTIVITY NOT OK Replace the FUELING POWER CONT switch S156 on the P15 panel IF OK Replace the QTY TEST switch S257 in the flight compartment IF NOT OK Replace the fueling power control relay R11 on the E3 electrical shelf THERE ARE NO VALUES SHOWN ON THE REFUEL QUANTITY INDICATORS ALL P15 INDICATORS Make sure the refuel panel floodlights are on if installed IF Refuel Indicators Inoperabl...

Page 53: ...otal fuel quantity displayed on CDU inaccurate or PDC error message displayed Replace FUEL PWR XFR RLY R309 in P6 panel IF OK The system is OK NOT OK Replace the Fuel Summation Unit AMM 28 41 81 401 PDCS Total Fuel Error Figure 115 Page 129 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 54: ...er Distribution Panel 1 FUEL QTY C397 2 EP GND FUELING C398 NOTE Circuit breaker C397 may also be labeled QTY 2 Loosen the clamp screw of the applicable indicator 3 Move the indicator and the digital calibration trim unit DCTU away from the panel 4 Disconnect the indicator from the DCTU NOTE Do not disconnect the DCTU from the aircraft wire bundle 3 Fuel Quantity Indicator Installation A Access 1 ...

Page 55: ... No 2 tank show the same quantities that you wrote down before e Connect the D884 connector again f Disconnect the connector D886 at the center tank bussing plug on the rear in the wheel well g Make sure the fuel quantity indicator for the center tank shows zero fuel quantity and an error code h Make sure the fuel quantity indicators for the No 1 and the No 2 tanks show the fuel quantities that yo...

Page 56: ...kers and attach DO NOT CLOSE tags a P6 Main Power Distribution Panel 1 EP GND FUELING 2 FUEL QTY 2 Open the access door for the refuel control panel P15 3 Loosen the clamp screw of the applicable indicator 4 Remove the indicator from the panel 5 Disconnect the electrical connector at the indicator 3 Refuel Quantity Indicator Installation A Access 1 Location Zone a 402 Right Wing Outboard Leading E...

Page 57: ...ircuit breakers and remove the DO NOT CLOSE tags a P6 Main Power Distribution Panel 1 FUEL QTY 2 EP GND FUELING 6 Push the test switch PUSH TO TEST on the refuel control panel p15 a Make sure all of the refuel quantity indicators operate correctly Page 404 Apr 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU EFFECTIVITY ...

Page 58: ... breakers and attach DO NOT CLOSE tags a P6 Main Power Distribution Panel 1 EP GND FUELING 2 FUEL QTY 2 Loosen the clamp screw of the applicable fuel quantity indicator 3 Move the fuel quantity indicator and the DCTU away from the panel 4 Loosen the screw on the cover of the DCTU 5 Move the cover back to the airplane wire bundle 6 Disengage the DCTU from the rear of the fuel quantity indicator 7 K...

Page 59: ...ower Distribution Panel 1 FUEL QTY 2 EP GND FUELING 7 Do the procedure Enter the Parameters into the DCTU for the parameters P01 thru P11 C Enter the Correct Parameters Into the DCTU 1 Push the UP button and the DOWN button on the DCTU at the same time CAUTION MAKE SURE BOTH BUTTONS ARE DEPRESSED AT THE SAME TIME IF BOTH BUTTONS ARE NOT PRESSED AT THE SAME TIME THE VALUE OF THE PARAMETER WILL BE C...

Page 60: ... sure the value of the applicable parameter is correct 5 Do this procedure for all of the parameters P01 thru P11 a When you complete the check the indicator shows the word CAL E Prepare the DCTU for Operation 1 Set the CAL RUN jumper on the DCTU to the RUN position 2 Move the cover back on the DCTU 3 Tighten the screws on the cover 4 Install the indicator and the DCTU in the panel 5 Tighten the c...

Page 61: ...wer Distribution Panel 1 EP GND FUELING 2 FUEL QTY 2 Loosen the clamp screw of the applicable fuel quantity indicator 3 Move the fuel quantity indicator and the DCTU away from the panel 4 Loosen the screw on the cover of the DCTU 5 Move the cover back to the airplane wire bundle 6 Disengage the DCTU from the rear of the fuel quantity indicator 7 Keep the fuel quantity indicator for the subsequent ...

Page 62: ...t the DCTU to the rear of the fuel quantity indicator 5 Set the CAL RUN jumper or the DCTU to the CAL position 6 Close these circuit breakers and remove the DO NOT CLOSE tags a P6 Main Power Distribution Panel 1 FUEL QTY 2 EP GND FUELING 7 Do the procedure Enter the Parameters into the DCTU for the parameters P01 thru P11 C Enter the Correct Parameters Into the DCTU 1 Push the UP button and the DO...

Page 63: ... sure the value of the applicable parameter is correct 5 Do this procedure for all of the parameters P01 thru P11 a When you complete the check the indicator shows the word CAL E Prepare the DCTU for Operation 1 Set the CAL RUN jumper on the DCTU to the RUN position 2 Move the cover back on the DCTU 3 Tighten the screws on the cover 4 Install the indicator and the DCTU in the panel 5 Tighten the c...

Page 64: ...FUELING 2 Loosen the clamp screw of the Vref Totalizer indicator 3 Move the indicator away from the panel 4 Disconnect the indicator from the aircraft wiring harness 3 Vref Totalizer Indicator Installation A Access 1 Location Zone a 101 Control Cabin Left b 102 Control Cabin Right B Procedure 1 Connect the Vref Totalizer Indicator to the aircraft wiring harness 2 Put the indicator into the panel 3...

Page 65: ...nd attach DO NOT CLOSE tags a P6 Main Power Distribution Panel 1 FUEL QTY 2 EP GND FUELING 2 Loosen the 4 mounting screws that attach the fuel summation unit to the first officer s auxiliary panel 3 Carefully move the fuel summation unit out of the first officer s auxiliary to get access to the rear of the FSU 4 Disconnect the FSU connector D3224 from the rear of the FSU 5 Put a cap on the connect...

Page 66: ...rom the connector D3224 for the fuel summation unit FSU in the first officer s auxiliary panel 3 Connect the connector D3224 to the rear of the FSU 4 Carefully put the FSU into its position in the first officer s auxiliary panel 5 Tighten the four mounting screws that attach the FSU to the P23 panel 6 Remove the DO NOT REMOVE tags and close these circuit breakers a On the P6 panel 1 FUEL QTY 2 EP ...

Page 67: ...AKEN WHILE PERFORMING ANY WORK IF ELECTRICAL POWER IS APPLIED TO THE AIRCRAFT A Open and tag the following circuit breakers P6 panel 1 FUEL QUANTITY 2 EP GROUND REFUELING 3 FUEL PANEL INDICATOR ENSURE AIRCRAFT IS ELECTRICALLY GROUNDED USE EXTREME CARE WHEN PERFORMING MAINTENANCE AS DAMAGE TO THE RECEPTACLE REQUIRES REPLACEMENT OF THE WIRE BUNDLE ASSEMBLY WARNING REFER TO 27 81 00 MP FOR LOCK INSTA...

Page 68: ...ch pounds CAUTION EXCEEDING SPECIFIED TORQUE OF TSU GROUND STUD CAN RESULT IN BREAKAGE 3 Perform bonding resistance check TSU ground stud J1 and J2 shells to airframe 8 milliohms maximum Refer to Standard Wiring Practices Manual 4 Carefully engage harness connector P1 to TSU connector J1 and harness connector P2 to TSU connector J2 5 Restore Airplane to Normal Refer to Paragraph 5 5 Restore Airpla...

Page 69: ...One of the TSUs D Compare the value to this table to see if you must do a test of the fuel quantity indicating system NOTE You must do the check before you put the fuel in the tank ACTION REQUIRED TANKS NONE SYSTEM TEST EMPTY 1 2 0 to 120 lbs 0 to 60 kgs Over 120 lbs Over 60 kgs VALUE CENTER 0 to 180 lbs 0 to 80 kgs Over 180 lbs Over 80 kgs E If the value on an indicator changes suddenly do a chec...

Page 70: ...fore with a tolerance of 20 pounds 20 kilograms e If error codes are shown refer to AMM 28 41 04 101 to repair the problems shown by the error codes 6 Open the access door 6540 for the refuel control panel P15 7 Write the values shown on the refuel quantity indicators 8 Set and hold the test switch to TEST GAGES 9 Make sure the refuel quantity indicators go to a value of zero and show error code 7...

Page 71: ... 4 B 14 4 B 25 and 4 B 26 do not change parameters P04 P05 P10 and P11 e For tanks not meeting c perform complete system test and calibration per paragraphs 3 and 4 3 System Test Fuel Quantity Indicating System A Special Tools and Equipment 1 System test unit Gull Airborne Instruments Inc 55 Engineers Road Smithtown N Y 11787 a Model GTF 1 P N 361 016 001 b Model GTF 2 P N 361 012 001 2 Test harne...

Page 72: ...he leading edge flaps Ref 27 81 00 201 4 Remove all the fuel from the fuel tank and the fuel in the sumps Ref 28 23 00 201 NOTE If you do an adjustment of only one tank system you can move the fuel into the other tanks 5 Open these circuit breakers and attach DO NOT CLOSE tags a P6 Main Power Distribution Panel 1 FUEL QTY 2 EP GND FUELING CAUTION POWER MUST BE REMOVED FROM FUEL QUANTITY INDICATORS...

Page 73: ... locations and make sure the resistance is more than the applicable minimum value NOTE Change the position of the probes if the resistance value is less than the minimum value If you cannot get a resistance that is more than the minimum value the circuit is bad LEAD 1 LEAD 2 MINIMUM RESISTANCE Pin 1 of receptacle Shield of pin 1 1 megohm Pin 2 of receptacle Shield of pin 1 1 megohm Pin 3 of recept...

Page 74: ...ENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location EFFECTIVITY Figure 501 Sheet 1 CONFIG 4 1 Page 506 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER ...

Page 75: ...Systems Malvern DOC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 CONFIG 4 1 Page 507 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER EFFECTIVITY ...

Page 76: ...ENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 2 CONFIG 4 1 Page 508 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER EFFECTIVITY ...

Page 77: ...ENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 3 CONFIG 4 1 Page 509 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER EFFECTIVITY ...

Page 78: ...ENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 4 CONFIG 4 1 Page 510 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER EFFECTIVITY ...

Page 79: ...ENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 5 CONFIG 4 1 Page 511 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER EFFECTIVITY ...

Page 80: ...ENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 6 CONFIG 4 1 Page 512 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER EFFECTIVITY ...

Page 81: ...TENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Resistance Measurement Figure 502 Sheet 1 CONFIG 4 1 Page 513 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER EFFECTIVITY ...

Page 82: ...TENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Resistance Measurement Figure 502 Sheet 2 CONFIG 4 1 Page 514 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER EFFECTIVITY ...

Page 83: ...ENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Capacitance Measurement Figure 503 Sheet 1 CONFIG 4 1 Page 515 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER EFFECTIVITY ...

Page 84: ...ENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Capacitance Measurement Figure 503 Sheet 2 CONFIG 4 1 Page 516 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU GULL SYSTEM TESTER EFFECTIVITY ...

Page 85: ...plicable minimum resistance SWITCH SETTING MINIMUM RESISTANCE C GND 10 Megohms B GND 10 Megohms A GND 10 Megohms A C 2000 Megohms A B 250 Megohms 13 Do this task Fuel Summation Unit Installation or V Ref Totalizer installation as applicable AMM 28 41 04 401 14 Do this task Refueling indicator installation AMM 28 41 04 401 15 Verify that capacitance trimmers are set per paragraph 4 A 5 16 Measure t...

Page 86: ...COMP f Read the capacitance of the fuel compensator 1 Depending on aircraft model the capacitance must be 39 0 pF 1 2 pF or 40 2 pF with a tolerance of 1 2 pF as determined from AMM 17 Return aircraft to normal configuration a Disconnect and remove FQIS test unit b Disconnect test harness from airplane wire bundle c Connect the electrical connector to the rear of the DCTU d Connect fuel quantity i...

Page 87: ...ew Back the trimmer screw CCW until flush with internally threaded tube turn clockwise one or two turns until resistance to rotation is felt Reinstall the trimmer s plastic cover B Adjust fuel quantity indicator empty at the pilot s panel 1 Open FUEL QTY circuit breaker 2 At the pilot s panel pull the indicator of tank to be calibrated out from the panel for access to the DCTU Remove the screw and...

Page 88: ...eight value plus 5 The full weight is calculated as the Placard volume multiplied by nominal fuel density 13 Depress both UP and DOWN select buttons simultaneously The indicator will display P05 for one second and five analog segments will illuminate After displaying P05 the display will change to show the last entered value 14 Adjust the displayed value to 816 by using the select buttons as requi...

Page 89: ...9 1 pfd 271 1 pfd 5 Center 1 Cell 145 1 pfd 296 4 pfd 5 Center 2 Cell 188 5 pfd 395 8 pfd 7 Center 2 Cell 204 5 pfd 422 8 pfd 8 Center 3 Cell 164 2 pfd 344 8 pfd 6 Center 3 Cell 219 4 pfd 461 6 pfd 9 Aux 94 5 pfd 203 5 pfd 4 Aux 400 Gal 110 5 pfd 219 4 pfd 4 Aux 810 Gal 109 2 pfd 222 4 pfd 4 24 Adjust parameter P09 by pressing the UP button to the value obtained in step 23 25 Depress both UP and D...

Page 90: ...f and record volume as defined on Placard or in AMM on Worksheet 1 ALTERNATE PROCEDURE Close all but fueling valves of tank to be calibrated Begin slowly filling tank until a reading is indicated on the gauge 50 pounds or less then immediately close tank valve Using the aircraft s pumps transfer fuel out of the tank until the pump Low Press indicators come on Zero the fuel truck meter Fuel tank to...

Page 91: ...05 the display will change to show 816 13 Press the Press to Test switch for the fuel quantity gages at the PILOT S panel The indicator will count down from 60 and advance to parameter 6 14 Depress both UP and DOWN select buttons simultaneously until parameter P10 is reached Check that value is reasonable for Wet Compensator 15 Depress both UP and DOWN select buttons simultaneously to advance to p...

Page 92: ... within 5 of initial setting If shutoff is unsatisfactory then repeat calibration procedure 26 Open P15 Refuel Control Panel and verify that the fuel quantity indicator reads the same as the cockpit per the following Tank Tolerance Main 1 2 20 LB 10 KG Center Wing 50 LB 30 KG Aux 50 LB 30 KG 27 Close P15 Refuel Control Panel 28 Repeat steps 4 C 2 through 4 C 27 for all other tanks to be calibrated...

Page 93: ..._ Wet Compensator Capacitance P06 _______________ Valve Anticipation Delay P07 _______________ Refueling Temperature P08 _______________ Calibration Constant 1 Dry Compensator P09 _______________ Calibration Constant 2 Dry Tank P10 _______________ Calibration Constant 3 Wet Compensator P11 _______________ Calibration Constant 4 Wet Tank Calculation of Parameter P4 Step 4 C 2 _______________ Fuel D...

Page 94: ... 100 percent analog display Then the indicator will return to displaying fuel NOTE Error codes will not appear if none are stored 3 To clear error codes the Press to Test switch must be depressed again during the error code display sequence The indicator will initiate the clearing function by restarting the error display cycle through the self test display and display CLr ERR prior to returning to...

Page 95: ...alue to this table to see if you must do system test NOTE You must do the check before you put the fuel in the tank ACTION REQUIRED TANKS NONE SYSTEM TEST EMPTY 1 2 0 to 120 lbs 0 to 60 kgs Over 120 lbs Over 60 kgs VALUE CENTER 0 to 180 lbs 0 to 80 kgs Over 180 lbs Over 80 kgs E If the value on a fuel quantity indicator changes suddenly do a check for water in the applicable fuel tank Ref 12 11 00...

Page 96: ...upplement 28 41 04 101 to repair the problems shown by the error codes 6 Open the access door 6540 for the refuel control panel P15 7 Write the values shown on the refuel quantity indicators 8 Set the test switch to TEST GAGES and hold it 9 Make sure the refuel quantity indicators go to a value of zero and show error code 7 type 2101 refuel indicator only after approximately 5 6 seconds The type 2...

Page 97: ...ir 400 New Century Parkway New Century KS 66031 b Model PSD60 1 J C Air c Model PSD60 2 J C Air d Model PSD60 2R J C Air 2 Test harness use one of these NOTE You must control the quality of the test cables Make sure stray capacitance for the test cables is less than 0 2 pf a J C Air Test Cables and Adapters recommended 1 PSD40 503 or PSD60 503 T Cable 2 PSD40 502 or PSD60 502 adapter center tank o...

Page 98: ... the external electrical power Ref 24 22 00 201 WARNING MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER WITH HYDRAULIC POWER REMOVED THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER THIS CAN CAUSE INJURY TO PERSON OR DAMAGE TO EQUIPMENT 2 Extend the leading edge flaps Re...

Page 99: ...or plugs and install TSU jumper harness 201475 001 to airplane wire bundle and tank harness Connect harness ground jumpers together and do not ground to airframe E Test Procedure 1 Measure the empty tank resistances Fig 502 a Set the power switch on the test unit to ON b Set the FREQUENCY SELECT switch PSD60 2R to 7 400 Hz and press to set c Set the FUNCTION SEL switch to MEG not SELF TEST MEG PSD...

Page 100: ...1 Megohm SHLD GND 10 Megohm LOZ GND 10 Megohm COMP GND 10 Megohm HIZ GND 10 Megohm 2 Do this task Fuel Summation Unit Installation or V Ref Totalizer installation as applicable AMM 28 41 81 401 3 Do this task Refueling indicator installation AMM 28 41 04 401 4 Verify that capacitance trimmers are set per paragraph 4 A 5 5 Measure the empty tank capacitances Fig 503 a If you have a PSD40 1 test uni...

Page 101: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location EFFECTIVITY Figure 501 Sheet 1 CONFIG 4 2 Page 507 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER ...

Page 102: ...stems Malvern DOC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 CONFIG 4 2 Page 508 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER EFFECTIVITY ...

Page 103: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 2 CONFIG 4 2 Page 509 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER EFFECTIVITY ...

Page 104: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 3 CONFIG 4 2 Page 510 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER EFFECTIVITY ...

Page 105: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 4 CONFIG 4 2 Page 511 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER EFFECTIVITY ...

Page 106: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 5 CONFIG 4 2 Page 512 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER EFFECTIVITY ...

Page 107: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 6 CONFIG 4 2 Page 513 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER EFFECTIVITY ...

Page 108: ...NANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Resistance Measurement EFFECTIVITY Figure 502 Sheet 1 CONFIG 4 2 Page 514 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER ...

Page 109: ...NANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Resistance Measurement Figure 502 Sheet 2 CONFIG 4 2 Page 515 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER EFFECTIVITY ...

Page 110: ...NANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Resistance Measurement EFFECTIVITY Figure 502 Sheet 3 CONFIG 4 2 Page 516 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER ...

Page 111: ...NANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Resistance Measurement Figure 502 Sheet 4 CONFIG 4 2 Page 517 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER EFFECTIVITY ...

Page 112: ...NANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Resistance Measurement Figure 502 Sheet 5 CONFIG 4 2 Page 518 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER EFFECTIVITY ...

Page 113: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Capacitance Measurement Figure 503 Sheet 1 CONFIG 4 2 Page 519 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU SIMMONDS SYSTEM TESTER EFFECTIVITY ...

Page 114: ... switch PSD40 1 or set the SELECT switch PSD60 1 2 or the MEGGER SELECT switch PSD60 2R to COMP 6 Measure the capacitance of the compensator a Depending on aircraft model the capacitance must be 39 0 pF 1 2 pF or 40 2 pF with a tolerance of 1 2 pF as determined from AMM 7 Return aircraft to normal configuration a Disconnect and remove FQIS test unit b Disconnect test harness from airplane wire bun...

Page 115: ...um capacitance as follows Remove the trimmer s plastic cover by unthreading it to reveal the adjustment screw Back the trimmer screw CCW until flush with internally threaded tube turn clockwise one or two turns until resistance to rotation is felt Reinstall the trimmer s plastic cover B Adjust fuel quantity indicator empty at the pilot s panel 1 Open FUEL QTY circuit breaker 2 At the pilot s panel...

Page 116: ...multaneously The indicator will display P04 for one second and four analog segments will illuminate After displaying P04 the display will change to show the last entered value 12 Adjust the displayed value to the appropriate full weight value plus 5 as defined in AMM Chapter 28 VTO Adjustment Dry Tank Method 13 Depress both UP and DOWN select buttons simultaneously The indicator will display P05 f...

Page 117: ...ry Tank Capacitance Nominal Dry Nominal Wet Count to be Tank Tank Capacitance Tank Capacitance Added to P09 Left Right 458 2 pfd 962 2 pfd 18 Left Right 474 2 pfd 991 2 pfd 18 Left Right 490 6 pfd 1059 4 pfd 20 Left Right 506 6 pfd 1075 4 pfd 20 Center Integral 164 2 pfd 355 2 pfd 7 Center 180 2 pfd 371 2 pfd 7 Center 1 Cell 129 1 pfd 271 1 pfd 5 Center 1 Cell 145 1 pfd 296 4 pfd 5 Center 2 Cell 1...

Page 118: ...titude 1 0 0 25 for 100 200 and 0 15 0 25 for 300 400 500 nose down and wings level within 25 during all phases of this test 2 Obtain fuel sample and record fuel density on Worksheet 1 NOTE If gauge is calibrated in LB units then density must be determined in LB US GALLON units If KG units are utilized then the density in KG LITER units must be obtained 3 Fuel tank to full level as defined on Plac...

Page 119: ...obtained in step 4 C 2 by volume of fuel added to tank NOTE The fuel weight must be rounded to the nearest 20 or 50 units depending on size of tank 11 Enter the fuel weight value obtained in step 4 C 10 into the indicator for parameter P04 12 Depress both UP and DOWN select buttons simultaneously The indicator will advance to parameter P05 After displaying P05 the display will change to show 816 1...

Page 120: ... airplanes only accomplish steps 23 through 25 23 Reduce fuel quantity in the tank by 20 percent 24 Fuel tank and allow volumetric shutoff to occur 25 Verify that fuel level has shut off within 5 of initial setting If shutoff is unsatisfactory then repeat calibration procedure 26 Open P15 Refuel Control Panel and verify that the fuel quantity indicator reads the same as the cockpit per the followi...

Page 121: ...Wet Compensator Capacitance P06 _______________ Valve Anticipation Delay P07 _______________ Refueling Temperature P08 _______________ Calibration Constant 1 Dry Compensator P09 _______________ Calibration Constant 2 Dry Tank P10 _______________ Calibration Constant 3 Wet Compensator P11 _______________ Calibration Constant 4 Wet Tank Calculation of Parameter P4 Step 4 C 2 _______________ Fuel Den...

Page 122: ...00 percent analog display Then the indicator will return to displaying fuel NOTE Error codes will not appear if none are stored 3 To clear error codes the Press to Test switch must be depressed again during the error code display sequence The indicator will initiate the clearing function by restarting the error display cycle through the self test display and display CLr ERR prior to returning to d...

Page 123: ...he value to this table to see if you must do a test of the fuel quantity indicating system NOTE You must do the check before you put the fuel in the tank ACTION REQUIRED TANKS NONE SYSTEM TEST EMPTY 1 2 0 to 120 lbs 0 to 60 kgs Over 120 lbs Over 60 kgs VALUE CENTER 0 to 180 lbs 0 to 80 kgs Over 180 lbs Over 80 kgs E If the value on an indicator changes suddenly do a check for water in the applicab...

Page 124: ...e values shown on the refuel quantity indicators 8 Set and hold the test switch to TEST GAGES 9 Make sure the refuel quantity indicators go to a value of zero and show error code 7 type 2101 refuel indicator only after approximately 5 6 seconds The type 2120 refuel indicator will blank for 2 seconds show all segments for 2 seconds and show full tank quantity for 2 seconds continuing to cycle NOTE ...

Page 125: ...s 3 and 4 3 System Test Fuel Quantity Indicating System A Special Tools and Equipment 1 System test unit Model 8000 Barfield Instrument Corp Miami Florida 33142 2 Test harness F72731 118 NOTE You must control the quality of the test cables Make sure stray capacitance for the test cables is less than 0 2 pf 3 TSU jumper harness a Part number 201475 001 Smiths Aerospace Inc B References 1 AMM 24 22 ...

Page 126: ...If you do an adjustment of only one tank system you can move the fuel into the other tanks 5 Open these circuit breakers and attach DO NOT CLOSE tags a P6 Main Power Distribution Panel 1 FUEL QTY 2 EP GND FUELING CAUTION POWER MUST BE REMOVED FROM FUEL QUANTITY INDICATORS WHEN CONNECTOR IS REMOVED OR DAMAGE TO INDICATORS MAY RESULT 6 Remove the fuel quantity indicator and the DCTU from the pilots ...

Page 127: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location EFFECTIVITY Figure 501 Sheet 1 CONFIG 4 3 Page 505 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU BARFIELD SYSTEM TESTER ...

Page 128: ...stems Malvern DOC NO 0134ED MAINTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 CONFIG 4 3 Page 506 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU BARFIELD SYSTEM TESTER EFFECTIVITY ...

Page 129: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 2 CONFIG 4 3 Page 507 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU BARFIELD SYSTEM TESTER EFFECTIVITY ...

Page 130: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 3 CONFIG 4 3 Page 508 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU BARFIELD SYSTEM TESTER EFFECTIVITY ...

Page 131: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 4 CONFIG 4 3 Page 509 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU BARFIELD SYSTEM TESTER EFFECTIVITY ...

Page 132: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 5 CONFIG 4 3 Page 510 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU BARFIELD SYSTEM TESTER EFFECTIVITY ...

Page 133: ...ANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Fuel Quantity Indicating System Component Location Figure 501 Sheet 6 CONFIG 4 3 Page 511 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU BARFIELD SYSTEM TESTER EFFECTIVITY ...

Page 134: ... the test unit h Connect the COMP wire bundle to the INSULATION LO Z receptacle i Set the INS TEST POINTS switch to LO Z HI Z j Read the resistance of the compensator 1 Make sure the resistance on the test unit is more than 2000 megohms 2 Do this task Fuel Summation Unit installation or V Ref Totalizer installation as applicable AMM 28 41 81 401 3 Verify that capacitance trimmers are set per parag...

Page 135: ...INTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Resistance Measurement EFFECTIVITY Figure 502 CONFIG 4 3 Page 513 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU BARFIELD SYSTEM TESTER ...

Page 136: ...NTENANCE MANUAL SUPPLEMENT BOEING B737 100 200 300 400 500 28 41 04 Test Equipment Set Up for Capacitance Measurement EFFECTIVITY Figure 503 CONFIG 4 3 Page 514 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU BARFIELD SYSTEM TESTER ...

Page 137: ...1 4 Center 1 Cell 145 1 4 Center 2 Cell 188 5 4 Center 2 Cell 204 5 4 Center 3 Cell 164 2 4 Center 3 Cell 219 4 4 Aux 94 5 4 Aux 400 Gal 110 5 4 Aux 810 Gal 109 2 4 m If the thumbwheels are set to a value out of the applicable range of capacitance values do the test for the tank units and the compensator Ref 28 41 21 501 n Set the battery switch to OFF o Disconnect the UNSHIELDED wire bundle from ...

Page 138: ... the following steps as required A Preparation for the system test 1 Provide electrical power Ref AMM Chapter 24 2 Extend leading edge flaps Ref AMM Chapter 27 WARNING YOU MUST CAREFULLY DO THE STEPS BELOW TO INSTALL THE LE FLAP SAFETY LOCKS THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT INSTALL THE SAFETY LOCKS CORRECTLY THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO THE EQUIPMENT 3 Install safety lo...

Page 139: ...AKE SURE YOU PUSH THE SWITCHES AT THE SAME TIME IF YOU DO NOT YOU WILL CHANGE THE VALUES THAT YOU ENTERED BEFORE THE INDICATOR GOES TO THE NEXT PARAMETER EFFECTIVITY 8 Adjust the displayed value to the dry tank capacitance value obtained in step 3 E 4 l by using the select buttons as required NOTE 86 75 pF is entered as 868 1036 5 pF is entered as 10365 9 Press the Press To Test switch for fuel qu...

Page 140: ...ng P07 the display will change to show the last entered value 18 Adjust the displayed value to 80 by using the select buttons as required 19 Depress both UP and DOWN select buttons simultaneously The indicator will display P08 for one second and eight analog segments will illuminate After displaying P08 the display will change to show the last entered value 20 Record parameter 8 value 21 Depress b...

Page 141: ... second and ten analog segments will illuminate After displaying P10 the display will change to show the last entered value Adjust the displayed value to 8600 for all tanks by using the select buttons as required 26 Depress both UP and DOWN select buttons simultaneously The indicator will display P11 for one second and eleven analog segments will illuminate After displaying P11 the display will ch...

Page 142: ... level as defined on Placard or in AMM and record the volume from the fuel truck meter on Worksheet 1 NOTE As an alternate procedure the tank may be filled using the drip sticks or float switch shut off per the AMM 4 Open FUEL QTY circuit breaker 5 Place CAL RUN jumper in CAL mode for Center Tank 6 Close FUEL QTY circuit breaker The indicator will display CAL 7 Depress both UP and DOWN select butt...

Page 143: ...5 Depress both UP and DOWN select buttons simultaneously to advance to parameter P11 Check that value is reasonable for Wet Tank Probes 16 Depress both UP and DOWN select buttons simultaneously until parameter P05 is reached 17 Adjust the displayed value to the value obtained in step 4 D 14 for parameter P10 except with the last digit truncated by using the select buttons as required For example i...

Page 144: ...l quantity indicator reads the same as the cockpit per the following Tank Tolerance Main 1 2 20 LB 10 KG Center Wing 50 LB 30 KG Aux 50 LB 30 KG 27 Close P15 Refuel Control Panel 28 Repeat steps 4 C 2 through 4 C 27 for all other tanks to be calibrated CONFIG 4 3 Page 522 April 19 02 Airplanes with Smiths 2307 Model Fuel Quantity Indicators with TSU BARFIELD SYSTEM TESTER EFFECTIVITY ...

Page 145: ...Wet Compensator Capacitance P06 _______________ Valve Anticipation Delay P07 _______________ Refueling Temperature P08 _______________ Calibration Constant 1 Dry Compensator P09 _______________ Calibration Constant 2 Dry Tank P10 _______________ Calibration Constant 3 Wet Compensator P11 _______________ Calibration Constant 4 Wet Tank Calculation of Parameter P4 Step 4 C 2 _______________ Fuel Den...

Page 146: ...00 percent analog display Then the indicator will return to displaying fuel NOTE Error codes will not appear if none are stored 3 To clear error codes the Press to Test switch must be depressed again during the error code display sequence The indicator will initiate the clearing function by restarting the error display cycle through the self test display and display CLr ERR prior to returning to d...

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