28-41-21
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
C98337
A 737-300/400/500MAINTENANCE MANUAL
COMPONENT PIN NO. EMPTY CAPACITANCE pf
____________________NO. 1 OR 2 FUEL TANK
COMP UNITF2 11S AND C 39.0 |1.2
TANK UNITF4 2S AND 2 72.5 |1.2
TANK UNITF6 4S AND 4 41.8 |1.2
TANK UNITF8 6S AND 6 66.2 |1.2
TANK UNITF21 6S AND 6 66.2 |1.2
TANK UNITF9 7S AND 7 29.7 |1.2
TANK UNITF18 12S AND 12 31.1 |1.2
TANK UNITF12 10S AND 10 26.0 |1.2
TANK UNITF11 9S AND 9 34.8 |1.2
TANK UNITF10 8S AND 8 30.0 |1.2
TANK UNITF7 5S AND 5 23.0 |1.2
TANK UNITF5 3S AND 3 64.4 |1.2
TANK UNITF3 1S AND 1 71.2 |1.2
AIRPLANES WITH A CENTER TANK
BUSSING PLUG ON THE REAR SPAR;
CENTER TANK___________
COMP UNITF14 11S AND C 39.0 |1.2
TANK UNITF17 8S AND 8 85.6 |1.2
TANK UNITF16 9S AND 9 78.6 |1.2
AIRPLANES WITHOUT A CENTER TANK
BUSSING PLUG ON THE REAR SPAR;
1
CENTER TANK___________
COMP UNITF14 1 AND 3 39.0 |1.2
TANK UNITF17 1 AND 2 164.2 |1.2
TANK UNITF16 1 AND 2 164.2 |1.2
TABLE B
____NOTE: THE TANK UNITS NO. F8 AND F21 ARE WIRED IN PARALLEL.
PIN NUMBERS CORRESPOND TO NUMBERS ON THE TEST HARNESS AND PIN NUMBERS ON THE AIRPLANE
CONNECTOR RECEPTACLE.
1 THE TANK UNITS NO. F17 AND F16 ARE WIRED IN PARALLEL. THE TANK UNITS AND THE COMPENSATOR HAVE A COMMON HI-Z WIRE.
Tank and Compensator Unit Capacitance and Resistance Values
Figure 502 (Sheet 3)
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28-41-21
ALL ú ú 01 Page 507 ú Nov 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
C98338
A
737-300/400/500MAINTENANCE MANUAL
S 715-010
(11) Measure the capacitance of each tank unit and compensator unit. NOTE: The capacitance must be as shown in Fig. 502, Table B.
____
S 085-012
(12)
Remove the bolts from the adapter plug. S 085-019
(13)
Remove the adapter plug. S 485-024
(14)
Connect the bussing plug to the receptacle (AMM 28-41-41/401).
S 715-014
(15)
Do the procedure again for the other fuel tanks.
S 865-015
(16)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
CAUTION:_______ BE CAREFUL WITH THE CONNECTOR PINS AND SOCKETS. THE CONNECTOR
RECEPTACLE IS PART OF THE TANK WIRE HARNESS. IF THERE IS
DAMAGE TO THE RECEPTACLE, IT IS NECESSARY TO REMOVE THE
ASSEMBLY.
(a) P6 Main Power Distribution Panel 1) EP GND FUELING 2) QTY
S 095-021
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT REMOVE THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(17) Remove the leading edge flap locks if you installed them before (AMM 27-81-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 865-042 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAPS. THE FLAPS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(18) Retract the leading edge flaps if they are extended (AMM 27-81-00/201).
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