Installation of the HPC Stage 7 Bleed Valve - Lower Left [IAE]

TASK 75-32-52-400-012-A
Installation of the HPC Stage 7 Bleed Valve - Lower Left

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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )
No specific	Torque wrench: range to between 177 and 159 lbf.in (2.00 and 1.80 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V02-126)	lockwire

C. Work Zones and Access Panels

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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 71-00-00-710-017-B	Ground Test Requirements after Power Plant Module/Component Repair or Replacement Procedures
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 75-32-52-700-011-A	Functional Test of the HPC Stage 7 Bleed Valve with Test Set IAE2R19437
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
HP Compressor 7th Stage Bleed Valve - Lower Left

3. Job Set-up
Subtask 75-32-52-860-052-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 75-32-52-010-059-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the left thrust reverser door is open (Ref. AMM TASK 78-32-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL
(b) FOR [1000EM2] (ENGINE-2)
461AL

Subtask 75-32-52-040-052-A ** ON A/C NOT FOR ALL

C. Make sure that the thrust reverser Hydraulic Control Unit (HCU) is deactivated (Ref. AMM TASK 78-30-00-040-012).

4. Procedure
Subtask 75-32-52-630-052-A ** ON A/C NOT FOR ALL

A. Remove all the covers/caps/plugs from the openings.

Subtask 75-32-52-160-052-A ** ON A/C NOT FOR ALL

B. Make sure all the mating faces are clean.

Subtask 75-32-52-410-054-A ** ON A/C NOT FOR ALL

C. Attach the Seal Carrier and the Silencer

PRE SBE 75-0071

(1) Put the seal carrier (1) in position on the bottom face of the bleed valve (5) top flange.
(2) Put the silencer (4) in position on the top face of the bleed valve top flange.
(3) Attach the valve and the silencer to the seal carrier with the bolts (3).

NOTE: Do not fully tighten the bolts at this step of the procedure.

END OF PRE SBE 75-0071

Subtask 75-32-52-420-054-A ** ON A/C NOT FOR ALL

D. Attach the silencer assembly

HP Compressor 7th Stage Bleed Valve - Lower Left ** ON A/C NOT FOR ALL

POST SBE 75-0071 and PRE SBE 75-0105

(1) Put the silencer assembly (10) in position on the top face of the bleed valve (9) top flange.
(2) Attach the silencer assembly (10) to the bleed valve (9) with the bolts (8) and the nuts (7).

NOTE: Do not fully tighten the nuts at this step of the procedure.

END OF POST SBE 75-0071 and END OF PRE SBE 75-0105

POST SBE 75-0105

(3) Put the silencer assembly (14) in position on the top face of the bleed valve (12) top flange.
(4) Attach the silencer assembly (14) to the bleed valve (12) with the bolts (13) and the nuts (16).

END OF POST SBE 75-0105

NOTE: Do not fully tighten the nuts at this step of the procedure.

Subtask 75-32-52-420-052-A ** ON A/C NOT FOR ALL

E. Installation of the Bleed Valve

PRE SBE 75-0071

(1) Put the valve (5) in position on the support duct flange.
(2) Align the air operation connector on the valve with the air operation tube (6).
(3) Attach the valve to the support duct flange with the bolts (2).
(4) TORQUE the bolts to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

END OF PRE SBE 75-0071

POST SBE 75-0071 and PRE SBE 75-0105

(5) Put the valve (9) in position on the support duct flange.
(6) Align the air operation connector on the valve with the air operation tube (6).
(7) Attach the valve to the support duct flange with the bolts (11).
(8) TORQUE the bolts to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

END OF POST SBE 75-0071 and END OF PRE SBE 75-0105

POST SBE 75-0105

(9) Put the valve (12) in position on the support duct flange.
(10) Align the air operation connector on the valve with the air operation tube(6).
(11) Attach the valve (12) to the support duct flange with the bolts (15).
(12) TORQUE the bolts (15) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

END OF POST SBE 75-0105

(13) Connect the air operation tube.

HP Compressor 7th Stage Bleed Valve - Lower Left ** ON A/C NOT FOR ALL

(a) Attach the tube (6) to the bleed valve connector.
(b) TORQUE the connector to between 177 and 159 lbf.in (2.00 and 1.80 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(c) Safety the connector with the lockwire (Material No.V02-126) .

PRE SBE 75-0071

(14) TORQUE the bolts (3) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

HP Compressor 7th Stage Bleed Valve - Lower Left ** ON A/C NOT FOR ALL

END OF PRE SBE 75-0071

POST SBE 75-0071 and PRE SBE 75-0105

(15) TORQUE the nuts (7) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

HP Compressor 7th Stage Bleed Valve - Lower Left ** ON A/C NOT FOR ALL

END OF POST SBE 75-0071 and END OF PRE SBE 75-0105

POST SBE 75-0105

(16) TORQUE the nuts (16) to between 105 and 85 lbf.in (1.19 and 0.96 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

HP Compressor 7th Stage Bleed Valve - Lower Left ** ON A/C NOT FOR ALL

END OF POST SBE 75-0105

5. Close-up
Subtask 75-32-52-410-058-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) Close the left thrust reverser half (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL
(b) FOR [1000EM2] (ENGINE-2)
461AL

Subtask 75-32-52-440-053-A ** ON A/C NOT FOR ALL

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

Subtask 75-32-52-410-055-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).

Subtask 75-32-52-720-052-C ** ON A/C NOT FOR ALL

D. Do a test of the HPC stage 7 bleed valve (Ref. AMM TASK 75-32-52-700-011) or (Ref. AMM TASK 71-00-00-710-017).

[Rev.10 from 2021] 2026.04.01 13:00:40 UTC