Installation of the Load Control Valve (131-9(A))

TASK 49-51-51-400-004-A
Installation of the Load Control Valve (131-9(A))

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.56 and 0.46 m.daN (49.56 and 40.71 lbf.in )
98L12003001000	1	HARNESS,SAFETY

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
315AL, 316AR

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
5	SEAL	AIPC 49-51-09-01-090
5	SEAL	AIPC 49-51-84-30-090

D. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 31-32-00-860-001-A	Procedure to Get Access to the SYSTEM REPORT/TEST Menu Page
TASK 49-00-00-790-006-A	Air Leak Test with closed APU Doors
TASK 49-00-00-860-008-A	APU Start by External Power
TASK 49-00-00-860-008-A-01	APU Start by Batteries
TASK 49-00-00-860-009-A	APU Shutdown by External Power (131-9(A))
TASK 49-00-00-860-009-A-01	APU Shutdown by Batteries (131-9(A))
TASK 52-41-00-010-001-A	Open the APU Doors for Access
TASK 52-41-00-410-001-A	Close the APU Doors after Access
Load Control Valve

3. Job Set-up
Subtask 49-51-51-860-054-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) On the overhead panel 25VU, make sure that the APU MASTER SW pushbutton switch is released (ON legend is off).
(3) On the APU section of overhead panel 25VU, make sure that the WARNING NOTICE(S) is in position to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).

Subtask 49-51-51-865-060-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR BLEED/X FEED/VALVE/BAT	2HV	D13
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 49-51-51-010-057-A ** ON A/C NOT FOR ALL

C. Get Access

WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

(1) Make sure that the 98L12003001000 HARNESS,SAFETY is put and attached before you start work in the work area.
(2) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is in position below the APU compartment.
(3) Make sure that APU access doors 315AL and 316AR are open (Ref. AMM TASK 52-41-00-010-001).
(4) Make sure that the light switch 11LJ is in the ON position.

4. Procedure
Subtask 49-51-51-420-051-A ** ON A/C NOT FOR ALL

A. Installation of the Load Control Valve
(1) Remove the blanking covers from the ducts.
(2) Position the AIPC 49-51-09-01-090 SEAL (5) or AIPC 49-51-84-30-090 SEAL (5) on valve (4).
(3) Hold the valve (4) in position and attach the clamp (6). Do not fully tighten the clamp at this time.

NOTE: Make sure that the arrow on the valve points in the same direction as the system air flow.

(4) Install the duct (1) to the valve (4) with the clamp (2).
(5) Apply the TORQUE value shown in the clamp (6).
(6) TORQUE the clamp (2) to between 0.56 and 0.46 m.daN (49.56 and 40.71 lbf.in )

.
(7) Remove the CAP-BLANKING from each electrical connector and receptacle.
(8) Connect the electrical connector (3) to the valve (4).

Subtask 49-51-51-865-061-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR BLEED/X FEED/VALVE/BAT	2HV	D13
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 49-51-51-740-051-A ** ON A/C NOT FOR ALL

C. BITE Test the APU Bleed Air System.
(1) Energize the CFDS to get the SYSTEM REPORT/TEST page for the APU (Ref. AMM TASK 31-32-00-860-001).
(2) Set the APU MASTER SW 14KD to ON.
(3) Do this Test.

ACTION	RESULT
1.On the MCDU: push the pushbutton adjacent to the APU indication.	On the MCDU: the APU menu page comes on.
push the pushbutton adjacent to the SYSTEM SELF-TEST indication.	the APU SYSTEM SELF-TEST page comes on and shows the message IN PROGRESS. if the test is satisfactory, the message TEST OK comes on.
2.On the MCDU: push the pushbutton adjacent to the RETURN display until the CFDS page comes on.

Subtask 49-51-51-710-054-A ** ON A/C NOT FOR ALL

D. Test the APU Bleed Air System.
(1) Start and operate the APU (Ref. AMM TASK 49-00-00-860-008).

(2) On the AIR COND panel 30VU, make sure that the X-BLEED switch is in the AUTO position.
(3) Do these steps:

ACTION	RESULT
1.On the ECAM control panel 11VU: push the BLEED pushbutton switch.	On the ECAM lower display unit: the BLEED page comes on.
2.On the AIR COND panel 30VU: push the APU BLEED switch to the ON position.	On the AIR COND panel 30VU: the blue ON light in the APU BLEED switch comes on. On the ECAM lower display unit: the X-BLEED valve indication shows open. the APU BLEED valve indication shows open.
3.On the AIR COND panel 30VU: push the PACK 1 and PACK 2 pushbutton switches to the ON position.	On the ECAM lower display unit: the system operation pressure is displayed. (It must be between 0.689 bar (9.9931 psi) and 2.068 bar (29.9938 psi)).
4.On the AIR COND panel 30VU: push the PACK 1 and the PACK 2 pushbutton switches to the OFF position.	On the AIR COND panel 30VU: the OFF lights in the PACK 1 and PACK 2 pushbutton switches come on.
5.On the AIR COND panel 30VU: push the APU BLEED switch to the off position.	On the AIR COND panel 30VU: the blue ON light goes off in the APU BLEED switch. On the ECAM lower display unit: the APU BLEED valve indication shows closed. the X-BLEED valve indication shows closed.

(4) Examine the bleed load control valve connections for leaks (Ref. AMM TASK 49-00-00-790-006). There must be no air leakage. The position indicator on the valve must indicate closed.
(5) Shut-down the APU (Ref. AMM TASK 49-00-00-860-009).

5. Close-up
Subtask 49-51-51-410-054-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Set the light switch 11LJ to the OFF position.
(3) Close APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
(5) Remove the safety harness.

Subtask 49-51-51-860-055-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Put the related hydraulic system in the pressurized configuration (Ref. AMM TASK 29-00-00-864-001).
(2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 01:31:14 UTC