Export Control
EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.Copyright
© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).Applicability
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Common Information
TASK 71-52-43-700-302 EEC Core Harness And Voltage Divider Harness Assembly - Test The Voltage Divider Harness, Testing-002
General
Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig./item numbers are used. For the Service Bulletin alpha variants refer to the IPC.
If the voltage supplied is in the limit of 24 volts DC, you can use the alternative procedures for the continuity test.
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Multimeter | LOCAL | Multimeter | ||
| Lamp and battery teter | LOCAL | Lamp and battery tester | 4.5 volts |
Consumables, Materials and Expendables
NONESpares
NONESafety Requirements
NONEProcedure
Refer to Figure.
Connect the Lamp and battery teter - 4.5 volts DC to the contact at the ends of each wire in turn.
Make sure the lamp comes on which shows continuity.
Reject the cable, if the lamp does not come on. This shows no continuity.
Lightly bend or pull the cable.
Reject the cable, if the lamp goes off.
SUBTASK 71-52-43-750-056 Do the Continuity Test between the Terminal Lugs D and A1 of the Voltage Divider Harness Assembly
Refer to Figure.
Connect the Lamp and battery teter - 4.5 volts DC to the contact at the ends of each wire in turn.
Make sure the lamp comes on which shows continuity.
Reject the cable, if the lamp does not come on. This shows no continuity.
Lightly bend or pull the cable.
Reject the cable, if the lamp goes off.
SUBTASK 71-52-43-750-057 Do the Continuity Test between the Terminal Lugs D and B1 of the Voltage Divider Harness Assembly
Refer to Figure.
Connect a Multimeter across the terminal lugs D and A1 of the voltage divider harness assembly.
Measure the insulation resistance.
The resistance must be in between 7425 and 7575 ohms.
If the resistance is not in between 7425 and 7575 ohms, replace the voltage divider harness assembly.
Disconnect the Multimeter from the terminal lugs D and A1 of the voltage divider harness assembly.
SUBTASK 71-52-43-750-058 Do the Insulation Resistance Test between the Terminal Lugs D and A1 of the Voltage Divider Harness Assembly
Refer to Figure.
Connect a Multimeter across the terminal lugs D and B1 of the voltage divider harness assembly.
Measure the insulation resistance.
The resistance must be in between 3564 and 3636 ohms.
If the resistance is not in between 3564 and 3636 ohms, replace the voltage divider harness assembly.
Disconnect the Multimeter from the terminal lugs D and B1 of the voltage divider harness assembly.
SUBTASK 71-52-43-750-059 Do the Insulation Resistance Test between the Terminal Lugs D and B1 of the Voltage Divider Harness Assembly
Figure: Voltage Divider Harness Assembly
Voltage Divider Harness Assembly
