A320 Trouble Shooting Manual 排故手册 FUEL 燃油1(72)

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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 21QA-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 21QA-A 
R  and the forward face of the cable guide (that shows outside 
R  the wing-skin) is 1345 mm (52.9527 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.
R  m_  Connect the connector 21QA-A to the fuel pump receptacle.
R  n_ Do the test given in Para. 3.B.(2)(b).

 「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 216
 May 01/04 CES

 

R (3) If the fuel transfers:
R (a) During the fuel transfer, disconnect the free connector 23QA-A R from the PRESS SW-FUEL PUMP No. 1, L WING TK (23QA) (Ref. AMM R TASK 28-21-15-000-003).
R (b) If the P/BSW-FUEL/L TK PUMPS/1 (13QA) FAULT legend stays on go to R step (d). If the P/BSW-FUEL/L TK PUMPS/1 (13QA) FAULT legend goes R off: R - do a check of and replace, if necessary, the PRESS SW-FUEL PUMP R NO 1, L WING TK (23QA) (Ref. AMM TASK 28-21-15-000-003) and R (Ref. AMM TASK 28-21-15-400-001).
R NOTE : If an ADAPTOR - SEQUENCE VALVE (99A28404000000) is
____ R available, the fuel pump fuel pressure can be measured at R the sealing valve outlet. This can be installed in place R of the pressure switch 23QA.
R (c) If the fault continues, or if no fuel pressure is shown on the R gage of the ADAPTOR - SEQUENCE VALVE, make sure that these R components are in the correct condition: R - the pressure switch sealing valve R - the pressure switch plug (banjo adaptor attachment bolt) R - the pressure switch fuel supply pipe-line between the fuel pump R canister 1QM and the pressure switch 23QA.
R NOTE : The pressure switch 23QA fuel supply pipe-line is also
____ R connected to the CHECK VALVE (224QM). R The check valve 224QM is in one of the fuel supply R pipe-lines that go to the left wing Integrated Drive R Generator (IDG) cooling system. The fuel in this pipe-line R is at ambient temperature.
R 1_ Repair/replace the components that are unserviceable.
R 2_ Do the test given in Para. 3.B.(2)(b).
R (d) If the P/BSW-FUEL/L TK PUMPS/1 (13QA) FAULT legend stays on, do a R check of the aircraft wiring (low pressure lines) (Ref. ASM 28-R 21/01) between the: R - pressure switch connector 23QA-A, pin C and the FLSCU-1 rack R connector 7QJ-AA, terminal 13C R - pressure switch connector 23QA-A, pin C and the SDAC-1 rack R connector 1WV1-AA, terminal 1D R - pressure switch connector 23QA-A, pin C and the SDAC-2 rack R connector 1WV2-AA, terminal 1D R - pressure switch connector 23QA-A, pin C and the BOARD-ANN LT R TEST & INTFC connector 6LP-A, terminal 14 R - BOARD-ANN LT TEST & INTFC connector 6LP-A, terminal 13 and the R P/BSW-FUEL/L TK PUMPS/1 connector 13QA-A, terminal 7.
R NOTE : A short circuit to ground on one of these lines can cause:
____

 「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 217
　
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