W DOC AIRBUS | AMM A320F

Check of the Green or Yellow Hydraulic System after Engine Pump Failure or Operation in a Possible Cavitation Condition - with Ground Cart Available

TASK 29-00-00-280-006-A
Check of the Green or Yellow Hydraulic System after Engine Pump Failure or Operation in a Possible Cavitation Condition - with Ground Cart Available

1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TASK 12-36-29-170-001-A
Flushing of the Green Hydraulic System of the Engine Driven Pump (EDP)
TASK 12-36-29-170-002-A
Flushing of the Yellow Hydraulic System of the Engine Driven Pump (EDP)
TASK 29-11-00-710-001-A
Operational Test of the Green Hydraulic System
TASK 29-11-43-000-803-A
Removal of the Engine-Pump Case-Drain Filter Assembly
TASK 29-11-43-400-803-A
Installation of the Engine-Pump Case-Drain Filter Assembly
TASK 29-11-43-610-010-A
Servicing of the Engine-Pump Case-Drain Filter
TASK 29-11-43-610-040-A
Servicing of the Engine-Pump Case-Drain Filter
TASK 29-11-43-610-041-A
Servicing the Engine-Pump Case-Drain Filter
TASK 29-11-44-610-001-A
Servicing of the LP-Filter
TASK 29-11-45-610-001-A
Servicing of the HP-Filter
TASK 29-11-51-000-010-A
Removal of the Engine Pump
TASK 29-11-51-000-040-A
Removal of the Green Engine Pump
TASK 29-11-51-000-041-A
Removal of the Green Engine Pump
TASK 29-11-51-000-805-A
Removal of the Green Engine Driven Pump
TASK 29-11-51-400-010-A
Installation of the Engine Pump
TASK 29-11-51-400-040-A
Installation of the Green Engine Pump
TASK 29-11-51-400-041-A
Installation of the Green Engine Pump
TASK 29-11-51-400-805-A
Installation of the Green Engine-Driven Pump
TASK 29-13-00-710-002-A
Operational Test of the Yellow Hydraulic System
TASK 29-13-43-610-010-A
Servicing of the Engine-Pump Case-Drain Filter
TASK 29-13-43-610-040-A
Servicing of the Engine Pump Case-Drain Filter
TASK 29-13-43-610-041-A
Servicing of the Engine Pump Case-Drain Filter
TASK 29-13-44-610-001-A
Servicing of the LP-Filter
TASK 29-13-45-610-001-A
Servicing of the HP-Filter
TASK 29-13-51-000-003-A
Removal of the Yellow Engine Pump
TASK 29-13-51-000-004-A
Removal of the Yellow Engine Pump
TASK 29-13-51-000-010-A
Removal of the Engine Pump
TASK 29-13-51-000-806-A
Removal of the Yellow Engine Driven Pump
TASK 29-13-51-400-003-A
Installation of the Yellow Engine Pump
TASK 29-13-51-400-004-A
Installation of the Yellow Engine Pump
TASK 29-13-51-400-010-A
Installation of the Engine Pump
TASK 29-13-51-400-806-A
Installation of the Yellow Engine-Driven Pump
TASK 78-31-01-000-801-A
Removal of the Thrust Reverser Actuation System (TRAS) Hydraulic Control Unit (HCU)
TASK 78-31-01-400-801-A
Installation of the Thrust Reverser Actuation System (TRAS) Hydraulic Control Unit (HCU)
TASK 78-31-51-000-011-A
Removal of the Thrust Reverser HCU Filter Cartridge
TASK 78-31-51-400-011-A
Installation of the Thrust Reverser HCU Filter Cartridge
TASK 78-31-51-920-001-A
Replacement of the Hydraulic Control Unit Filter
TASK 78-31-51-920-040-A
Replacement of the Hydraulic Control Unit Filter
3. Job Set-up
NOTE: A cavitation condition of the engine pump is possible when the engine pump operates with the engine pump fire-valve closed (if you set the ENG 1 (2) FIRE P/BSW on the Eng/APU fire panel), or with no fluid in the reservoir (ECAM HYD system page). This procedure can also apply if there is a indication of particles (from a defective EDP) released in the system (e.g. indication found during troubleshooting or while examine pump low pressure or overheat).
Subtask 29-00-00-860-078-A
A. There is no special job set-up for this task.
4. Procedure
Subtask 29-00-00-281-051-B ** ON A/C NOT FOR ALL
A. Do a check of the engine pumps for a possible cavitation condition
NOTE: Two procedures are included here to do a check after an engine pump operation for more than 10 minutes in a possible cavitation condition. Each procedure is applicable for a different set of conditions. Only do the procedure that is applicable for the conditions you find.
   (1) Do the subsequent procedure if the engine pump has operated for more than 10 minutes:
  • With a closed engine pump fire valve, or
  • With no fluid in the reservoir (ECAM HYD system page) or RSVR LO LVL warning on the upper ECAM DU and unknown fluid level.
NOTE: There are no time limits if:
  • The engine pump is set to OFF (ENG 1 (2) PUMP FAULT/OFF P/BSW on panel 40VU), with
  • The engine-pump fire valve open and there is fluid in the reservoir.
     (a) Replace the case drain filter (Ref. AMM TASK 29-11-43-610-041) (Ref. AMM TASK 29-13-43-610-041).
     (b) Do a check for metallic particles in the filter bowl and the filter of the hydraulic control unit of the thrust reverser on related unit.
     (c) If you find the DPI extended or abnormal particles in filter or bowl:
       1 Flush the hydraulic control unit line (Ref. AMM TASK 12-36-29-170-001) or (Ref. AMM TASK 12-36-29-170-002).
       2 Replace the filter of the hydraulic control unit of the thrust reverser (Ref. AMM TASK 78-31-51-920-001).
     (d) Check HP filter DPI for extension and do a check for particles in the HP filter bowl and the filter of the related line.
     (e) If you find the DPI extended or abnormal particles in filter or bowl:
       1 Replace the HP filter (Ref. AMM TASK 29-11-45-610-001) or (Ref. AMM TASK 29-13-45-610-001).
       2 Flush the related HP hydraulic lines (Ref. AMM TASK 12-36-29-170-001) or (Ref. AMM TASK 12-36-29-170-002).
     (f) Check LP filter DPI for extension and do a check for particles in the LP filter bowl and the filter of the related line.
     (g) If you find the DPI extended or abnormal particles in filter or bowl:
       1 Replace the LP filter (Ref. AMM TASK 29-11-44-610-001) or (Ref. AMM TASK 29-13-44-610-001).
     (h) Replace the related engine pump (Ref. AMM TASK 29-11-51-000-041) and (Ref. AMM TASK 29-11-51-400-041) or (Ref. AMM TASK 29-13-51-000-004) and (Ref. AMM TASK 29-13-51-400-004).
       1 Do the operational test of the related hydraulic system (Ref. AMM TASK 29-11-00-710-001) or (Ref. AMM TASK 29-13-00-710-002).
       2 Do a check for DPIs extension, filters and filter bowls for abnormal particles.
       3 If you find a DPI extended or abnormal particles:
  • Replace the related filter.
   (2) Do the subsequent procedure, after an engine pump operation for more than 10 minutes:
  • With an open engine pump fire-valve, and
  • With fluid in the reservoir (index above the minimum gageable level on the ECAM HYD system page) although the RSVR LO LVL warning on the upper ECAM DU
     (a) Do a check for particles:
  • In the filter bowl and the filter of the hydraulic control unit of the thrust reverser
  • In the case-drain filter bowl and the filter of the related engine pump
  • In the HP filter bowl and the filter of the related system.
     (b) If you find particles:
       1 Do the steps (1) (a) thru (e) of this procedure.
     (c) If you do not find particles:
       1 Do the operational test of the related hydraulic system (Ref. AMM TASK 29-11-00-710-001) or (Ref. AMM TASK 29-13-00-710-002).
       2 During the test, slowly move one flight control surface at a time.
       3 Make sure that the system pressure is more than 2800 psi (193.1 bar) during the test:
     (d) If the system pressure is less than 2800 psi (193.1 bar) during the test:
       1 Do the steps (1) (a) thru (e) of this procedure.
Subtask 29-00-00-281-051-D ** ON A/C NOT FOR ALL
A. Do a check of the engine pumps for a possible cavitation condition
NOTE: Two procedures are included here to do a check after an engine pump operation for more than 10 minutes in a possible cavitation condition. Each procedure is applicable for a different set of conditions. Only do the procedure that is applicable for the conditions you find.
   (1) Do the subsequent procedure if the engine pump has operated for more than 10 minutes:
  • With a closed engine pump fire valve, or
  • With no fluid in the reservoir (ECAM HYD system page) or RSVR LO LVL warning on the upper ECAM DU and unknown fluid level.
NOTE: There are no time limits if:
  • The engine pump is set to OFF (ENG 1 (2) PUMP FAULT/OFF P/BSW on panel 40VU), with
  • The engine-pump fire valve open and there is fluid in the reservoir.
     (a) Replace the case drain filter (Ref. AMM TASK 29-11-43-610-040) (Ref. AMM TASK 29-13-43-610-040).
     (b) Do a check for metallic particles in the filter bowl and the filter of the hydraulic control unit of the thrust reverser on related unit.
     (c) If you find the DPI extended or abnormal particles in filter or bowl:
       1 Flush the hydraulic control unit line (Ref. AMM TASK 12-36-29-170-001) or (Ref. AMM TASK 12-36-29-170-002).
       2 Replace the filter of the hydraulic control unit of the thrust reverser (Ref. AMM TASK 78-31-51-920-040).
     (d) Check HP filter DPI for extension and do a check for particles in the HP filter bowl and the filter of the related line.
     (e) If you find the DPI extended or abnormal particles in filter or bowl:
       1 Replace the HP filter (Ref. AMM TASK 29-11-45-610-001) or (Ref. AMM TASK 29-13-45-610-001).
       2 Flush the related HP hydraulic lines (Ref. AMM TASK 12-36-29-170-001) or (Ref. AMM TASK 12-36-29-170-002).
     (f) Check LP filter DPI for extension and do a check for particles in the LP filter bowl and the filter of the related line.
     (g) If you find the DPI extended or abnormal particles in filter or bowl:
       1 Replace the LP filter (Ref. AMM TASK 29-11-44-610-001) or (Ref. AMM TASK 29-13-44-610-001).
     (h) Replace the related engine pump (Ref. AMM TASK 29-11-51-000-040) and (Ref. AMM TASK 29-11-51-400-040) or (Ref. AMM TASK 29-13-51-000-003) and (Ref. AMM TASK 29-13-51-400-003).
       1 Do the operational test of the related hydraulic system (Ref. AMM TASK 29-11-00-710-001) or (Ref. AMM TASK 29-13-00-710-002).
       2 Do a check for DPIs extension, filters and filter bowls for abnormal particles.
       3 If you find a DPI extended or abnormal particles:
  • Replace the related filter.
   (2) Do the subsequent procedure, after an engine pump operation for more than 10 minutes:
  • With an open engine pump fire-valve, and
  • With fluid in the reservoir (index above the minimum gageable level on the ECAM HYD system page) although the RSVR LO LVL warning on the upper ECAM DU
     (a) Do a check for particles:
  • In the filter bowl and the filter of the hydraulic control unit of the thrust reverser
  • In the case-drain filter bowl and the filter of the related engine pump
  • In the HP filter bowl and the filter of the related system.
     (b) If you find particles:
       1 Do the steps (1) (a) thru (e) of this procedure.
     (c) If you do not find particles:
       1 Do the operational test of the related hydraulic system (Ref. AMM TASK 29-11-00-710-001) or (Ref. AMM TASK 29-13-00-710-002).
       2 During the test, slowly move one flight control surface at a time.
       3 Make sure that the system pressure is more than 2800 psi (193.1 bar) during the test:
     (d) If the system pressure is less than 2800 psi (193.1 bar) during the test:
       1 Do the steps (1) (a) thru (e) of this procedure.
Subtask 29-00-00-281-051-E ** ON A/C NOT FOR ALL
A. Do a check of the engine pumps for a possible cavitation condition
NOTE: Two procedures are included here to do a check after an engine pump operation for more than 10 minutes in a possible cavitation condition. Each procedure is applicable for a different set of conditions. Only do the procedure that is applicable for the conditions you find.
   (1) Do the subsequent procedure if the engine pump has operated for more than 10 minutes:
  • With a closed engine pump fire valve, or
  • With no fluid in the reservoir (ECAM HYD system page) or RSVR LO LVL warning on the upper ECAM DU and unknown fluid level.
NOTE: There are no time limits if:
  • The engine pump is set to OFF (ENG 1 (2) PUMP FAULT/OFF P/BSW on panel 40VU), with
  • The engine-pump fire valve open and there is fluid in the reservoir.
     (a) Replace the case drain filter (Ref. AMM TASK 29-11-43-610-010) (Ref. AMM TASK 29-13-43-610-010).
     (b) Do a check for metallic particles in the filter bowl and the filter of the hydraulic control unit of the thrust reverser on related unit.
     (c) If you find the DPI extended or abnormal particles in filter or bowl:
       1 Flush the hydraulic control unit line (Ref. AMM TASK 12-36-29-170-001) or (Ref. AMM TASK 12-36-29-170-002).
       2 Replace the filter of the hydraulic control unit of the thrust reverser (Ref. AMM TASK 78-31-51-000-011) and (Ref. AMM TASK 78-31-51-400-011).
     (d) Check HP filter DPI for extension and do a check for particles in the HP filter bowl and the filter of the related line.
     (e) If you find the DPI extended or abnormal particles in filter or bowl:
       1 Replace the HP filter (Ref. AMM TASK 29-11-45-610-001) or (Ref. AMM TASK 29-13-45-610-001).
       2 Flush the related HP hydraulic lines (Ref. AMM TASK 12-36-29-170-001) or (Ref. AMM TASK 12-36-29-170-002).
     (f) Check LP filter DPI for extension and do a check for particles in the LP filter bowl and the filter of the related line.
     (g) If you find the DPI extended or abnormal particles in filter or bowl:
       1 Replace the LP filter (Ref. AMM TASK 29-11-44-610-001) or (Ref. AMM TASK 29-13-44-610-001).
     (h) Replace the related engine pump (Ref. AMM TASK 29-11-51-000-010) and (Ref. AMM TASK 29-11-51-400-010) or (Ref. AMM TASK 29-13-51-000-010) and (Ref. AMM TASK 29-13-51-400-010).
       1 Do the operational test of the related hydraulic system (Ref. AMM TASK 29-11-00-710-001) or (Ref. AMM TASK 29-13-00-710-002).
       2 Do a check for DPIs extension, filters and filter bowls for abnormal particles.
       3 If you find a DPI extended or abnormal particles:
  • Replace the related filter.
   (2) Do the subsequent procedure, after an engine pump operation for more than 10 minutes:
  • With an open engine pump fire-valve, and
  • With fluid in the reservoir (index above the minimum gageable level on the ECAM HYD system page) although the RSVR LO LVL warning on the upper ECAM DU
     (a) Do a check for particles:
  • In the filter bowl and the filter of the hydraulic control unit of the thrust reverser
  • In the case-drain filter bowl and the filter of the related engine pump
  • In the HP filter bowl and the filter of the related system.
     (b) If you find particles:
       1 Do the steps (1) (a) thru (e) of this procedure.
     (c) If you do not find particles:
       1 Do the operational test of the related hydraulic system (Ref. AMM TASK 29-11-00-710-001) or (Ref. AMM TASK 29-13-00-710-002).
       2 During the test, slowly move one flight control surface at a time.
       3 Make sure that the system pressure is more than 2800 psi (193.1 bar) during the test:
     (d) If the system pressure is less than 2800 psi (193.1 bar) during the test:
       1 Do the steps (1) (a) thru (e) of this procedure.
Subtask 29-00-00-281-051-H ** ON A/C NOT FOR ALL
A. Do a check of the engine pumps for a possible cavitation condition
NOTE: Two procedures are included here to do a check after an engine pump operation for more than 10 minutes in a possible cavitation condition. Each procedure is applicable for a different set of conditions. Only do the procedure that is applicable for the conditions you find.
   (1) Do the subsequent procedure if the engine pump has operated for more than 10 minutes:
  • With a closed engine pump fire valve, or
  • With no fluid in the reservoir (ECAM HYD system page) or RSVR LO LVL warning on the upper ECAM DU and unknown fluid level.
NOTE: There are no time limits if:
  • The engine pump is set to OFF (ENG 1 (2) PUMP FAULT/OFF P/BSW on panel 40VU), with
  • The engine-pump fire valve open and there is fluid in the reservoir.
     (a) Replace the case drain filter (Ref. AMM TASK 29-11-43-000-803) and (Ref. AMM TASK 29-11-43-400-803).
     (b) Do a check for metallic particles in the filter bowl and the filter of the hydraulic control unit of the thrust reverser on related unit. If you find the DPI extended or abnormal particles in filter or bowl:
     (c) Check HP filter DPI for extension and do a check for particles in the HP filter bowl and the filter of the related line. If you find the DPI extended or abnormal particles in filter or bowl:
     (d) Check LP filter DPI for extension and do a check for particles in the LP filter bowl and the filter of the related line. If you find the DPI extended or abnormal particles in filter or bowl:
     (e) Replace the related engine pump (Ref. AMM TASK 29-11-51-000-805) and (Ref. AMM TASK 29-11-51-400-805) or (Ref. AMM TASK 29-13-51-000-806) and (Ref. AMM TASK 29-13-51-400-806).
   (2) Do the subsequent procedure, after an engine pump operation for more than 10 minutes:
  • With an open engine pump fire-valve, and
  • With fluid in the reservoir (index above the minimum gageable level on the ECAM HYD system page) although the RSVR LO LVL warning on the upper ECAM DU
     (a) Do a check for particles:
  • In the filter bowl and the filter of the hydraulic control unit of the thrust reverser
  • In the case-drain filter bowl and the filter of the related engine pump
  • In the HP filter bowl and the filter of the related system.
     (b) If you find particles:
       1 Do the steps (1) (a) thru (e) of this procedure.
     (c) If you do not find particles:
       1 Do the operational test of the related hydraulic system (Ref. AMM TASK 29-11-00-710-001) or (Ref. AMM TASK 29-13-00-710-002).
       2 During the test, slowly move one flight control surface at a time.
       3 Make sure that the system pressure is more than 2800 psi (193.1 bar) during the test:
     (d) If the system pressure is less than 2800 psi (193.1 bar) during the test:
       1 Do the steps (1) (a) thru (e) of this procedure.
[Rev.10 from 2021] 2026.04.01 00:13:34 UTC
"Aviabrain" 2025