Test No.14 : Pressure Raising Valve Operational Check (POST SBE 73-1098) [IAE]

TASK 71-00-00-710-016-A
Test No.14 : Pressure Raising Valve Operational Check (POST SBE 73-1098)

WARNING: DO NOT DO AN ENGINE RUN-UP WITH THE THRUST REVERSER COWLS OPEN. IF YOU OPERATE THE ENGINE AT MORE THAN IDLE, THE FAN COWLS MUST NOT BE OPEN. IF YOU DO NOT OBEY THESE INSTRUCTIONS, INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.

1. Reason for the Job
Refer to the MPD TASK: 753200-I2
PRESSURE RAISING VALVE OPERATIONAL CHECK
This task is for V2500-A5 engines that are POST SB 73-1098.
You can use this test to make sure that the pressure raising valve is operating correctly. Measure the extension of the variable stator vane actuator rod after an engine run and shutdown to make sure the pressure raising valve is operating correctly.
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 71-00-00-710-018-A	Discontinued Start, Restart and Shutdown Procedures
TASK 71-00-00-710-043-A	Normal Engine Automatic-Start Procedure
TASK 71-00-00-710-047-A	Normal Engine Manual-Start Procedure
TASK 71-00-00-860-010-B	Engine Operation Limits, Guidelines and Special Procedures
TASK 71-00-00-860-011-C	Table of Idle Indications
TASK 71-00-00-860-011-C-01	Table of Idle Indications
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 73-11-47-000-012-A	Removal of the Pressure Raising Valve (PRV) and Tubes
TASK 73-11-47-400-012-A	Installation of the Pressure Raising Valve (PRV) and Tubes
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
Variable Stator Vane Actuator - Pressure Raising Valve Operational Check

3. Job Set-up
Subtask 71-00-00-861-098-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 71-00-00-860-170-A ** ON A/C NOT FOR ALL

B. Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).

4. Procedure
Subtask 71-00-00-710-217-A ** ON A/C NOT FOR ALL

A. Do this test:

NOTE: For general information, refer to engine operation limits, guidelines and special procedures (Ref. AMM TASK 71-00-00-860-010).

NOTE: The measurement of dimension A must be done after the engine idle run. Other engine cranking procedures can put the variable stator vane actuator ram in an incorrect position for this test.

NOTE: If the engine is shutdown without aircraft tank pump pressure, the variable stator vane actuator ram can be in an incorrect position for this test.

(1) If the previous engine shutdown was completed in accordance with the discontinued start, restart and shutdown procedure (Ref. AMM TASK 71-00-00-710-018) and the criteria that follow are satisfied, then it is not necessary to do the engine run given in step 4.A (2) to step 4.A (5) and step 4.B.
(a) During the previous engine shutdown, the fuel tank engine feeding pumps were ON and the circuit breaker for the LP fuel valve was CLOSED.
(b) No maintenance work that could have affected the position of the variable stator vane actuator ram position was done since the previous engine shutdown.
(2) Operate the engine at MIN IDLE only for this test.
(3) Start the engine with the normal engine automatic start procedure (Ref. AMM TASK 71-00-00-710-043) or the normal engine manual start procedure (Ref. AMM TASK 71-00-00-710-047). Make sure the fuel tank engine feeding pumps are ON and the circuit breaker for the LP fuel valve is CLOSED.
(4) Make sure that the indications of operation are in the limits (Ref. AMM TASK 71-00-00-860-011).
(5) Run the engine at MIN IDLE for five minutes.

NOTE: Make sure that you obey the precautions that are given for persons to operate an engine safely. If you do not obey these precautions it can cause injury.

Subtask 71-00-00-710-218-A ** ON A/C NOT FOR ALL

B. Do a shutdown with the discontinued start, restart and shutdown procedure (Ref. AMM TASK 71-00-00-710-018).

Subtask 71-00-00-010-159-A ** ON A/C NOT FOR ALL

C. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

Subtask 71-00-00-040-093-A ** ON A/C NOT FOR ALL

D. Deactivate the thrust reverser:

WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Deactivate the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 71-00-00-010-160-A ** ON A/C NOT FOR ALL

E. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 71-00-00-220-051-A ** ON A/C NOT FOR ALL

F. Measure dimension A:

Variable Stator Vane Actuator - Pressure Raising Valve Operational Check ** ON A/C NOT FOR ALL

(1) Replace the pressure raising valve if dimension A is not between 39,00 mm (1.53 in.) and 41.50 mm (1.63 in.) (Ref. AMM TASK 73-11-47-000-012) and (Ref. AMM TASK 73-11-47-400-012).

NOTE: If you replace the pressure raising valve, remove only the minimum necessary number of parts to be able to remove and install the pressure raising valve.

5. Close-up
Subtask 71-00-00-942-075-A ** ON A/C NOT FOR ALL

A. Make sure that the work area is clean and clear of tools and other items.

Subtask 71-00-00-410-150-A ** ON A/C NOT FOR ALL

B. Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 71-00-00-440-089-A ** ON A/C NOT FOR ALL

C. Activate the thrust reverser HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 71-00-00-410-151-A ** ON A/C NOT FOR ALL

D. Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

Subtask 71-00-00-860-171-A ** ON A/C NOT FOR ALL

E. Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).

Subtask 71-00-00-862-089-A ** ON A/C NOT FOR ALL

F. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 02:28:26 UTC