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R  19__  Set the L TK PUMPS 2 P/BSW (15QA) to ON (push in). This will
R  energize the contactor 19QA and the 115VAC three phases will 
R  be supplied to the fuel pump connector 25QA-A. 
R  20__  Use a multimeter to do a test, to make sure that each of the
R  115VAC three phases are available at the connector 25QA-A 
R  (Ref. ASM 28-21/02). 
R  21__  Set the L TK PUMPS 2 P/BSW (15QA) to OFF (release out). This
R  will de-energize the contactor 19QA. 
R  22__  If the 115VAC is available at the end connector 25QA-A:
R  a_  Install the front cover of the contactor box 107VU.
R  b_  Connect the end connector 25QA-A to the fuel pump
R  receptacle. 
R  c_  Do the test given in Para. 3.B.(2)(b).
R  23__  If the 115VAC is not available at the end connector 25QA-A, do
R  a test of the aircraft wiring (three phase supply) between the 
R  CNTOR-L WING TK PUMP 2 SPLY (19QA) and the PUMP-FUEL No. 2, L 
R  WING TK (25QA) free connector 25QA-A (Ref. ASM 28-21/02). 
R  NOTE : If necessary, you can divide the supply cable between____ 
R  the contactor 19QA and the connector 25QA-A into two 
R  sections at the connector 7117VC (Ref. AWM 28-21-03). 
R  Do the test as follows: 
R  a_  Continuity test, with a multimeter, of each three phase
R  wire (from end to end) (Ref. ESPM 20-52-21). 
R  b_  Insulation test, with a 500VDC insulation tester, between
R  each phase wire (pole) and ground (Ref. ESPM 20-52-24). 
R  c_  Insulation test, with a 500VDC insulation tester, between
R  each phase wire and the other two wires (pole to pole) 
R  (Ref. ESPM 20-52-24). 
R  d_  If during the wiring test in step 23_ the wiring is
R  unserviceable, repair/replace the unserviceable wiring and 
R  connectors.

 「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 : 301-399, ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page 267
 May 01/04 CES

 

R  e_  If the fuel pump supply cable is found to be unserviceable
R  (where it is routed across the lower surface of the wing) 
R  repair as follows: 
R  CAUTION : DO NOT USE IN-LINE SPLICES TO REPAIR SECTIONS OF_______ 
R  ELECTRICAL CABLE THAT ARE BEHIND A FAIRING OR IN 
R  A CONDUIT. 
R  THIS WILL MAKE SURE THAT IT IS POSSIBLE TO SEE 
R  THE REPAIR FOR AN INSPECTION (REF. ESPM 
R  20-53-29). 
R  f_  If necessary, replace the unserviceable:
R  - protective sleeve 
R  - wire(s) 
R  - connector 25QA-A. 
R  g_  Connect the new wire(s) of the fuel pump supply cable where
R  the wiring passes through the junction box (bracket 
R  assembly), by a splice(s) (Ref. ESPM 20-53-21). 
R  h_  Make sure that the length of the new supply cable when
R  assembled, between the front face of the connector 25QA-A 
R  and the forward face of the cable guide (that shows outside 
R  the wing-skin) is 1320 mm (51.9685 in.). 
R  i_  If necessary, make a final adjustment in the length of the
R  supply cable across the lower surface of the wing during 
R  the installation of the rear fairing. 
R  j_  Feed the surplus cable (small amount only) back up the
R  flexible conduit to the junction box (bracket assembly) on 
R  the rear spar. 
R  k_  Make sure that the supply cable is held tight by the P-clip
R  at the cable guide. 
R  NOTE : It is important that the fuel pump supply cable is____ 
R  installed correctly as given in steps g_ thru k_. 
R  Incorrect installation of the cable can cause it to 
R  get damaged. If the cable is too short it will put 
R  tension on the wires and plug. If the cable is too 
R  long you will not be able to install the fairings 
R  correctly. This is because the unwanted cable 
R  (excess length) will become looped and get trapped 
R  during the installation of the intermediate and rear 
R  fairings. 
R  l_  Install the front cover of the contactor box 107VU.
　
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