(k) If the 115VAC three phase supply voltage measured in step (h) is not correct, (no voltage, incorrect voltage or a phase is missing) do all the sub-steps that follow:
1 Make sure that good lighting is available.
_ Do a visual inspection and look for distortion (pinched or streched) damage (chafed or cut), discoloration, overheating (burnt/melted or arcing) liquid contamination, loose electrical connection or incorrect assembly, of the items that follow:
- the fuel pump receptacle
- the fuel pump supply cable end connector 37QA-A
- the fuel pump supply cable
- the forward and rear sides of the structure of bulkhead FR42 adjacent to the route of the supply cable.
2 Repair, replace or make serviceable items found unserviceable
_
in step (k)1_.
a If a wire is damaged, the complete section (length) of
_ (each) wire (between the fuel pump connector 37QA-A and the connector 7612VC-A that goes through pressure seal 7611VP) must be replaced (Ref. AWM 28-21-05). This is because the wires are located in a fuel and vapour zone (Ref. ESPM 20-31-36).
「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 A232
201-299, 401-499, Aug 01/05 CES 3 If the aircraft structure is damaged, refer to Allowable
_
Damage, P. Block 101, (Ref. ASRM 53-00-00) for the related
type of damage in the Table of Contents.
4 In the cockpit (right rear) do a visual inspection as
_ specified in step (k)1_ of the items that follow, replace if necessary:
a The C/B-FUEL/CTR TK/PUMP1 SPLY (29QA) 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).
5 Release the front face of the C/B panel 121VU and lower to the
_
open (horizontal) position.
6 Use a multimeter and make sure that each of the 115VAC three
_
phases are available at the C/B-29QA input and output
terminals (Ref. ASM 28-21/03).
7 If the 115VAC supply to the C/B-29QA, is not available at
_ terminals A1, B1 and C1 trouble shoot the AC supply (Ref. TSM 24 PB 101).
8 If, with the C/B-29QA closed, the 115VAC supply is not
_ available at terminals A2, B2 and C2, replace the C/B-FUEL/CTR TK/PUMP1 SPLY (29QA).
9 Raise the front face of the C/B panel 121VU to the closed
_
(vertical) position and secure.
10 In the forward avionics bay, remove the front cover of the
__ contactor box 107VU (Ref. AWM 93-01-07).
11 Do a visual inspection as specified in step (k)1_ and replace,
__ if necessary:
a The CNTOR-CTR TK PUMP 1 SPLY (35QA).
_ b The connectors 1260VC-A and 1264VC-A and the related
_
receptacles.
12 Remove the contactor 35QA.
__
13 Use a multimeter and make sure that each of the 115VAC three
__ phases are available at the contactor base input sockets (8, 6 and 2) (Ref. ASM 28-21/03).
「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 A233
201-299, 401-499, Aug 01/05 CES
14__ If the 115VAC supply to the contactor 35QA is not available, do a test of the aircraft wiring (three phase supply) between the C/B-FUEL/CTR TK/PUMP1 SPLY (29QA) and the CNTOR-CTR TK PUMP 1 SPLY (35QA) (Ref. ASM 28-21/03). Do the test 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).
d_ Repair, replace the unserviceable wiring and connectors.
CAUTION : DO NOT USE IN-LINE SPLICES TO REPAIR SECTIONS OF_______ ELECTRICAL CABLE THAT ARE BEHIND A FAIRING OR IN A CONDUIT. THIS WILL MAKE SURE THAT IT IS POSSIBLE TO SEE THE REPAIR FOR AN INSPECTION (REF. ESPM 20-53-29).
e_ Install the contactor 35QA.
f_ Install the front cover of the contactor box 107VU.
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