(7)
 Safety the pipe coupling nut (6) to the tee assembly (1) with MISCELLANEOUS (Material No. 19-010).

 (8)
 Install the bolts (2), the washers (3) and the P-clips (5) that hold the fuel feed pipe (4) in position.

 (9)
 Do the operational test of the APU fuel pump system (Ref. TASK 28-22-00-710-001).

 1EFF : ALL 1 28-21-00Page 590 1 1 Aug 01/05R 1 1 1CES 1

R  Subtask 28-21-00-710-064 
R  D. Procedure B 
R  (1) Do this check for the air-release valve (ARV) on the feed line of the 
R  LH engine: 
R  -------------------------------------------------------------------------------
R  ACTION RESULT 
R  -------------------------------------------------------------------------------
R  1. On the panel 40VU: 
R  - make sure that the X FEED - the ECAM DU shows the crossfeed valve 
R  pushbutton switch is released is closed (cross-line). 
R  (out). 
R  CAUTION : YOU MUST ONLY OPERATE THE APU WITH NO LOAD WHEN YOU DO THE TESTS. 
R 
R  2. Start the APU: 
R  - for the GTCP 36-300 APU 
R  (Ref. TASK 49-00-00-860-003) 
R  - for the APS 3200 APU (Ref. TASK 
R  49-00-00-860-005) 
R  - for the 131-9(A) APU (Ref. TASK 
R  49-00-00-860-008). 
R 
R  3. Monitor the performance of the - the APU must operate correctly. If 
R  APU for eight minutes. the APU fails to start to operate or 
R  does not continue to operate (Auto 
R  shutdown) the LH ARV could be 
R  defective. 
R  NOTE : There will be low fuel pressure warnings if there is a failure.____ 
R  4. Replace the ARV if it does not 
R  operate correctly (Ref. TASK 28-
R  21-41-000-001) (Ref. TASK 28-21-
R  41-400-001) and do the check 
R  again. 

R 1EFF : ALL 1 28-21-00Page 591 1 1 Nov 01/04 1 1 1CES 1R Subtask 28-21-00-710-065

R E. Procedure B
R (1) Do this check for the air-release valves (ARV) on the feed line of R the RH engine:
R -------------------------------------------------------------------------------R ACTION RESULT R -------------------------------------------------------------------------------
R 1. On the panel 40VU:
R - push (in) the X FEED pushbutton R switch. R R
R 2. Monitor the performance of the R APU for eight minutes. R R R
-
the ECAM DU shows the crossfeed valve is open (in-line).

-
the ON and OPEN legends come on.

-
the APU must operate correctly. If the APU fails to start to operate or does not continue to operate (Auto shutdown) the RH ARV could be defective.

R NOTE : There will be low fuel pressure warnings if there is a failure.
____
R 3. Replace the ARV if it does not
R operate correctly (Ref. TASK 28-R 21-41-000-001) (Ref. TASK 28-21-R 41-400-001) and do the check
R again.
R

R 4. Stop the APU:
R - for the GTCP 36-300 APU
R (Ref. TASK 49-00-00-860-004)
R - for the APS 3200 APU (Ref. TASK
R 49-00-00-860-006)
R - for the 131-9(A) APU (Ref. TASK
R 49-00-00-860-009).

R 1EFF : ALL 1 28-21-00Page 592 1 1 Nov 01/04 1 1 1CES 1

 5. Close-up
________ Subtask 28-21-00-410-055
 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.
 (2) If necessary, close the APU access doors 315AL 316AR. Subtask 28-21-00-942-066
 B. Removal of Equipment
 (1)
 Remove the safety barriers.

 (2)
 Remove the warning notice(s).

 (3)
 Remove the access platform(s).

 (4)
 Remove the ground support and maintenance equipment, the special and standard tools and all other items.

R 1EFF : ALL 1 28-21-00Page 593 1 1 May 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,

 TASK 28-21-00-710-005
 Operational Check to Ensure that Both Center Tank Pumps Feed for 2 Minutes After Engine Start
 WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______
 START A TASK ON OR NEAR:

 -
THE FLIGHT CONTROLS

 -
THE FLIGHT CONTROL SURFACES

 -
THE LANDING GEAR AND THE RELATED DOORS

 -COMPONENTS THAT MOVE.
 WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.
　
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