(a) If necessary:
(6) Clean and dry the fuel pump supply cable and the end connector 37QA-A (38QA-A).
(7) Disconnect the supply cable end connector 37QA-A (38QA-A) from the fuel pump receptacle.
(8) Make sure that good lighting is available. Do a visual inspection and look for distortion (pinched or stretched), damage (chafed or cut), discoloration, overheating (burnt/melted or arcing) liquid contamination or incorrect assembly, of the items that follow:
- the fuel pump receptacle
- the supply cable end connector 37QA-A (38QA-A)
- the supply cable
- the forward and rear sides of the structure of bulkhead FR42 adjacent to the route of the supply cable.
1_ Repair all the leaks:
- (Ref. AMM TASK 51-76-12-300-001)
- (Ref. AMM TASK 51-76-12-300-002).
2_ Clean the area of the fuel spillage.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page B208
201-299, 401-499, Aug 01/05 CES
(9) Repair, replace or make serviceable items found unserviceable in step (8).
(a) If a wire is damaged, the complete section (length) of (each) wire (between the fuel pump connector 37QA-A (38QA-A) and the connector 7612VC-A (7577VC-A) that goes through pressure seal 7611VP (7508VP)) must be replaced (Ref. AWM 28-21-05) ((Ref. AWM 28-21-06)). This is because the wires are located in a fuel and vapour zone (Ref. ESPM 20-31-36).
(b) If the aircraft structure is damaged, refer to the related items
- Allowable Damage, P. Block 101, (Ref. ASRM 53-00-00).
(10) Do an insulation test, with an (intrinsically safe) 500VDC insulation tester, of the fuel pump stator windings as follows:
WARNING : WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE
_______ TEST EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT, E.G. EN50-020, UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
(a) Connect one lead, of the insulation tester, to pin D of the fuel pump receptacle.
(b) Connect the pins A, B and C, of the fuel pump receptacle, together (at the same time).
(c) Connect the other lead, of the insulation tester, to the pins A, B and C that were connected together in the previous step.
(d) If the insulation resistance of the fuel pump stator windings:
1 Is more than 1 Mohm, go to step (11).
_
2 Is less than 1 Mohm, replace the PUMP-FUEL NO 1, CTR TK (37QA)
_ (PUMP-FUEL NO 2, CTR TK (38QA)) (Ref. AMM TASK 28-21-51-000-002) and (Ref. AMM TASK 28-21-51-400-002).
(11) In the cockpit (right rear) do a visual inspection as specified in step (8) of the items that follow, replace if necessary:
(a) The C/B-FUEL/CTR TK/PUMP 1 SPLY (29QA) (C/B-FUEL/CTR TK/PUMP 2 SPLY (30QA)) at the C/B panel 121VU (Ref. AWM 93-01-21).
(b) The connector 2212VC-A and related receptacle at the panel 120VU (Ref. AWM 93-01-20).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page B209
201-299, 401-499, Aug 01/05 CES
(12) In the forward avionics bay, at the contactor box 107VU (Ref. AWM 93-01-07) do a visual inspection as specified in step (8) and replace, if necessary:
(a) The CNTOR-CTR TK PUMP 1 SPLY (35QA) (CNTOR-CTR TK PUMP 2 SPLY (36QA)).
(b) The connectors 1260VC-A (1262VC-A) and 1264VC-A (1266VC-A) and the related receptacles.
(13) Do a test, as detailed in the text that follows, of the aircraft wiring (three phase electrical supply) (Ref. AWM 28-21-05) ((Ref. AWM 28-21-06)) between the:
- C/B-FUEL/CTR TK/PUMP1(2) SPLY 29QA(30QA) and the CNTOR-CTR TK PUMP 1(2) SPLY 35QA(36QA)
- CNTOR-CTR TK PUMP 1(2) SPLY 35QA(36QA) and the connector 7612VC (7577VC).
The test required is as follows:
(a) Continuity test, with a multimeter, of each three phase wire (from end to end) (Ref. ESPM 20-52-21).
(b) Insulation test, with a 500VDC insulation tester, between each phase wire (pole) and ground (Ref. ESPM 20-52-24).
(c) Insulation test, with a 500VDC insulation tester, between each phase wire and the other two wires (pole to pole) (Ref. ESPM 20-52-24).
(14) Repair/replace the unserviceable wiring and connectors.
CAUTION : DO NOT USE IN-LINE SPLICES TO REPAIR SECTIONS OF ELECTRICAL
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本文链接地址：A320 Trouble Shooting Manual 排故手册 FUEL 燃油2(7)
