Installation of the High Pressure Turbine Active Clearance Control (HPTACC) Valve [CFMB]

TASK 75-21-10-400-002-A
Installation of the High Pressure Turbine Active Clearance Control (HPTACC) Valve

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

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

REFERENCE	QTY	DESIGNATION
No specific	AR	PLIERS - JAWED, SOFT
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
No specific	Torque wrench: range to between 85 and 70 lbf.in (0.96 and 0.79 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	graphite grease
(Material No.CP8001)	lockwire 0.032 in. (0.8 mm) dia.
(Material No.CP8002)	lockwire 0.032 in. (0.8 mm) dia

C. Work Zones and Access Panels

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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
30	GASKET	AIPC 75-21-10-01-020
100	GASKET	AIPC 75-21-10-01-060
90	GASKET	AIPC 75-21-10-01-060
155	GASKETS	AIPC 75-21-10-01-090
150	ORIFICE PLATE	AIPC 75-21-10-01-100
170	SEAL RING	AIPC 75-21-10-01-120
280	GASKET	AIPC 75-21-10-01-150

E. 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 71-00-00-710-006-B	Minimum Idle Check
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 73-29-00-710-040-B	Operational Test of the FADEC on the Ground (with Engine Motoring)
TASK 73-29-00-710-040-B-02	Operational Test of the FADEC on the Ground (with Engine Non motoring)
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
HPTACC Valve Location

3. Job Set-up
Subtask 75-21-10-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 75-21-10-865-057-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
FOR FIN: 1000EM1 (ENGINE1)
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
FOR FIN: 1000EM2 (ENGINE2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26

Subtask 75-21-10-010-059-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 75-21-10-040-055-A ** ON A/C NOT FOR ALL

D. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).

4. Procedure
Subtask 75-21-10-420-051-A ** ON A/C NOT FOR ALL

A. Installation of the HPTACC
(1) Install the HPTACC valve on the HPC front case boss as follows:
(a) Clean the component interface and/or the adjacent area.
(b) Do a visual inspection of the component interface and/or the adjacent area.

PRE SB 72-0846

(c) Remove the blanking plugs from:

The 9th-stage outlet port of the HPTACC valve (10)
The 9th-stage air outlet elbow (120)

(d) Put the new AIPC 75-21-10-01-060 GASKET (100) in position on the 9th-stage outlet port of the HPTACC valve (10) and the 9th-stage air-outlet elbow (120).
(e) Install the bolts (110) to assemble the 9th-stage outlet port of the HPTACC valve (10) and the 9th-stage air outlet elbow (120).
(f) TORQUE the bolts (110) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.

END OF PRE SB 72-0846

POST SB 72-0846

(g) Remove the PLUG - BLANKING from:

The High-Pressure Turbine Clearance Control (HPTCC) manifold outlet-port of the HPTACC valve (10)
The HPTCC manifold outlet (2480M87G01)

(h) Put the new AIPC 75-21-10-01-060 GASKET (100) in position on the HPTCC manifold outlet-port of the HPTACC valve (10) and the HPTCC manifold (2480M87G01).
(i) Install the bolts (110) to assemble the HPTCC manifold outlet-port of the HPTACC valve (10) and the HPTCC manifold outlet (2480M87G01).
(j) TORQUE the bolts (110) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.

END OF POST SB 72-0846

(k) Remove the blanking plug from the HPC front case boss (20) and the 4th-stage inlet of the HPTACC (10).
(l) Put the new AIPC 75-21-10-01-020 GASKET (30) in position on the HPC front case boss (20).
(m) Put the HPTACC valve (10) in position on the HPC front case boss (20) and the bracket.
(n) Apply graphite grease (Material No.CP2101) on the bolts (40), the threads and the friction surfaces.
(o) Install the bolts (40) on the 4th-stage inlet of the HPTACC valve (10) and the HPC front case boss (20).
(p) Install the bolts (50) and (60) that attach the HPTACC valve (10) to the bracket.
(q) Lubricate the threads of the bolts (40) with graphite grease (Material No.CP2101) :

TORQUE the bolts (40) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN ) . Install CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.

(r) TORQUE the bolts (50) and (60) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(2) Install the 9th-stage air-inlet tube on the HPTACC valve as follows:
(a) Remove the blanking plugs from the inlet of the 9th-stage port of the HPTACC valve (10) and the outlet of the 9th-stage air-tube (70).
(b) Put the new AIPC 75-21-10-01-060 GASKET (90) in position on the inlet of the 9th-stage port of the HPTACC valve (10) and the 9th-stage air tube (70).
(c) Install the bolts (80) manually to safety the inlet of the 9th-stage port of the HPTACC valve (10) and the 9th-stage air tube (70).
(3) Install the fuel manifold to the HPTACC valve as follows:
(a) Remove the blanking plugs from the inlet port of the HPTACC valve (10) and the fuel manifold (290).
(b) Put the new AIPC 75-21-10-01-150 GASKET (280) in position on the inlet port of the HPTACC valve (10) and the fuel manifold (290).
(c) Tighten the bolts (300) and (310) manually to assemble the fuel manifold (290) and the HPTACC valve (10).
(4) Install the 4th/9th stage air-outlet tube on the HPTACC valve as follows:

PRE SB 72-0846

(a) Remove the blanking plugs from the 4th-stage outlet ports of the HPTACC valve (10) and the outlet port of the 9th-stage elbow (120).
(b) Remove the blanking plugs from the 4th-stage outlet ports of the HPTACC valve (10) and the outlet port of the 9th-stage elbow (140).
(c) Put the new AIPC 75-21-10-01-100 ORIFICE PLATE (150) between two AIPC 75-21-10-01-090 GASKETS (155). Then, put this assembly between the outlet side of the 9th stage of the air outlet elbow (120) and the 4th/9th-stage air-outlet tube (140).
(d) Install the bolts (160) and the nuts (130) manually.
(e) Install the new AIPC 75-21-10-01-120 SEAL RING (170) to the 4th-stage outlet of the HPTACC (10) and the 4th/9th stage air-outlet tube (140).
(f) Safety the 4th-stage outlet of the HPTACC (10) and the 4th/9th stage air-outlet tube (140) with the V-band clamp (190).
(g) Tighten the nut (180) of the V-band clamp (190) manually.

END OF PRE SB 72-0846

POST SB 72-0846

(5) Install the HPTCC manifold outlet-tube on the HPTACC valve as follows:
(a) Install the new AIPC 75-21-10-01-120 SEAL RING (170) to the 4th-stage outlet of the HPTACC (10) and the HPTCC manifold outlet-tube (2480M87G01).
(b) Attach the 4th-stage outlet of the HPTACC (10) and the HPTCC Manifold outlet-tube (2480M87G01) with the V-band clamp (190).
(c) Tighten the nut (180) of the V-band clamp (190) manually.

END OF POST SB 72-0846

(6) Tighten the bolts as follows:
(a) TORQUE the bolts (300) and (310) of the fuel manifold (290) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(b) TORQUE the nut (180) of the V-band clamp (190) to between 85 and 70 lbf.in (0.96 and 0.79 m.daN )

.

PRE SB 72-0846

(c) TORQUE the bolts (160) on the outlet side of the 9th-stage air-outlet elbow (120) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

END OF PRE SB 72-0846

(d) TORQUE the bolts (80) of the 9th-stage air tube (70) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

PRE SB 72-0846

(e) TORQUE the bolts (210) of the retaining strap (200) of the 9th-stage air-outlet tube (140) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

END OF PRE SB 72-0846

POST SB 72-0846

(f) TORQUE the bolts (210) of the retaining strap (200) of the HPTCC manifold outlet tube (2480M87G01) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.

END OF POST SB 72-0846

(g) TORQUE the bolts (220) of the loop clamp (230) of the 9th-stage air tube (70) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

(7) Connect the electrical connectors as follows:
(a) Remove the blanking caps from the electrical connectors, Channel A (260) and Channel B (250).
(b) Remove the blanking caps from the electrical connectors, Channel A (270) and Channel B (240) of the HPTACC valve (10).
(c) Connect the electrical connectors:

Channel A (260) and Channel B (250) to electrical connectors
Channel A (270) and Channel B (240) of the HPTACC valve (10)

1 Tighten the connectors manually plus one-eighth of a turn. If necessary, use the PLIERS - JAWED, SOFT

Subtask 75-21-10-410-056-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the right thrust reverser door: (Ref. AMM TASK 78-36-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
452AR
(b) FOR [1000EM2] (ENGINE-2)
462AR

Subtask 75-21-10-440-052-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 75-21-10-861-051-A ** ON A/C NOT FOR ALL

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

Subtask 75-21-10-869-052-A ** ON A/C NOT FOR ALL

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

Subtask 75-21-10-865-055-A ** ON A/C NOT FOR ALL

F. 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
FOR FIN: 1000EM1 (ENGINE1)
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
FOR FIN: 1000EM2 (ENGINE2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26

Subtask 75-21-10-710-051-A ** ON A/C NOT FOR ALL

G. Do this Test:
(1) Do an operational test of the FADEC on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040)
(2) Do a minimum idle check for leaks (Ref. AMM TASK 71-00-00-710-006). Make sure that on the CFDS no fault is shown related to the HPTACC.

Subtask 75-21-10-862-051-A ** ON A/C NOT FOR ALL

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

5. Close-up
Subtask 75-21-10-869-053-A ** ON A/C NOT FOR ALL

A. Do the EIS Stop Procedure: (Ref. AMM TASK 31-60-00-860-002).

Subtask 75-21-10-410-057-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Close the fan cowl doors: (Ref. AMM TASK 71-13-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:10:04 UTC