Removal of the HPC Stage 7 Bleed Valve - Upper Right [IAE]

TASK 75-32-52-000-010-A
Removal of the HPC Stage 7 Bleed Valve - Upper Right

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.

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	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	COVER - BLANKING
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
HP Compressor 7th Stage Bleed Valve - Upper Right

3. Job Set-up
Subtask 75-32-52-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 75-32-52-010-060-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 75-32-52-040-053-A ** ON A/C NOT FOR ALL

C. 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 75-32-52-010-050-A ** ON A/C NOT FOR ALL

D. Open the right thrust reverser half (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
452AR
(2) FOR [1000EM2] (ENGINE-2)
462AR

4. Procedure
Subtask 75-32-52-010-051-A ** ON A/C NOT FOR ALL

A. Removal of the Silencer, the Seal Carrier and the Bleed Valve

PRE SBE 75-0071 and PRE SBE 75-0105

(1) Remove the nuts (3) and the bolts (4) which attach the silencer (5) and the seal carrier (6) to the bleed valve (7).
(2) Remove the silencer (5) and the seal carrier (6).
(3) Cut and discard the wire from the tube (8).
(4) Disconnect the tube (8) from the bleed valve (7).
(5) Hold the bleed valve (7) and remove the nuts (1) and the bolts (4) which attach the bleed valve (7) to the support duct.
(6) Remove the bleed valve (7).

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

Subtask 75-32-52-020-057-A ** ON A/C NOT FOR ALL

B. Removal of the Silencer Assembly and the Bleed Valve

POST SBE 75-0071, PRE SBE 75-0092 and PRE SBE 75-0105

(1) Remove the nuts (9) and the bolts (10) which attach the silencer assembly (11) to the bleed valve (12).
(2) Disconnect the tube (8) from the bleed valve (12).
(3) Remove the silencer assembly (11).
(4) Remove the nuts (51) and the bolts (50) which attach the bleed valve (12) to the support duct.
(5) Remove the bleed valve (12) from the support duct.

END OF POST SBE 75-0071, END OF PRE SBE 75-0092 and END OF PRE SBE 75-0105

Subtask 75-32-52-020-059-A ** ON A/C NOT FOR ALL

C. Removal of the Silencer Assembly, the Spacer and the Bleed Valve

POST SBE 75-0092, PRE SBE 75-0093 and PRE SBE 75-0105

(1) Remove the bolts (15) and the nuts (17) that attach the silencer assembly (14) and the spacer (13) to the bleed valve (16).
(2) Remove the silencer assembly (14) and the spacer (13).
(3) Cut and discard the wire from the tube (8).
(4) Disconnect the tube (8) from the bleed valve (16).
(5) Hold the bleed valve (16) and remove the nuts (49) and the bolts (48) which attach the bleed valve (16) to the support duct.
(6) Remove the bleed valve (16).

END OF POST SBE 75-0092, END OF PRE SBE 75-0093 and END OF PRE SBE 75-0105

Subtask 75-32-52-020-060-A ** ON A/C NOT FOR ALL

D. Removal of the Silencer Assembly and the Bleed Valve

POST SBE 75-0093 and PRE SBE 75-0105

(1) Remove the bolts (19) and the nuts (21) that attach the silencer assembly (18) to the bleed valve (20).
(2) Remove the silencer assembly (18).
(3) Cut and discard the wire from the tube (8).
(4) Disconnect the tube (8) from the bleed valve (20).
(5) Hold the bleed valve (20) and remove the nuts (53) and the bolts (52) which attach the bleed valve (20) to the support duct.
(6) Remove the bleed valve (20).

END OF POST SBE 75-0093 and END OF PRE SBE 75-0105

Subtask 75-32-52-020-061-A ** ON A/C NOT FOR ALL

E. Removal of the Silencer Assembly and the Bleed Valve

POST SBE 75-0092 and POST SBE 75-0105

(1) Remove the bolts (36) and the nuts (40) that attach the silencer assembly (35) and the spacer (37) to the bleed valve (41).
(2) Remove the silencer assembly (35) and the spacer (37).
(3) Cut and discard the wire from the tube (8).
(4) Disconnect the tube (8) from the bleed valve (41).
(5) Hold the bleed valve (41) and remove the nuts (39) and the bolts (38) which attach the bleed valve (41) to the support duct.
(6) Remove the bleed valve (41).

END OF POST SBE 75-0092 and END OF POST SBE 75-0105

Subtask 75-32-52-020-062-A ** ON A/C NOT FOR ALL

F. Removal of the Silencer Assembly and the Bleed Valve

POST SBE 75-0093 and POST SBE 75-0105

(1) Remove the bolts (43) and the nuts (46) that attach the silencer assembly (42) to the bleed valve (47).
(2) Remove the silencer assembly (42).
(3) Cut and discard the wire from the tube (8).
(4) Disconnect the tube (8) from the bleed valve (47).
(5) Hold the bleed valve (47) and remove the nuts (45) and the bolts (44) which attach the bleed valve (47) to the support duct.
(6) Remove the bleed valve (47).

END OF POST SBE 75-0093 and END OF POST SBE 75-0105

Subtask 75-32-52-020-063-A ** ON A/C NOT FOR ALL

G. Removal of the Silencer, the Seal Carrier and the Bleed Valve

PRE SBE 75-0071 and POST SBE 75-0105

(1) Remove the nuts (28) and the bolts (23) which attach the silencer (24) and the seal carrier (25) to the bleed valve (22).
(2) Remove the silencer (24) and the seal carrier (25).
(3) Cut and discard the wire from the tube (8).
(4) Disconnect the tube (8) from the bleed valve (22).
(5) Hold the bleed valve (22) and remove the nuts (27) and the bolts (26) which attach the bleed valve (22) to the support duct.
(6) Remove the bleed valve (22).

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

Subtask 75-32-52-020-064-A ** ON A/C NOT FOR ALL

H. Removal of the Silencer Assembly and the Bleed Valve

POST SBE 75-0105 and POST SBE 75-0071

(1) Remove the bolts (30) and the nuts (33) that attach the silencer assembly (29) to the bleed valve (34).
(2) Remove the silencer assembly (29).
(3) Cut and discard the wire from the tube (8).
(4) Disconnect the tube (8) from the bleed valve (34).
(5) Hold the bleed valve (34) and remove the nuts (32) and the bolts (31) which attach the bleed valve (34) to the support duct.
(6) Remove the bleed valve (34).

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

Subtask 75-32-52-620-050-A ** ON A/C NOT FOR ALL

I. Put the applicable COVER - BLANKING on all the openings.

[Rev.10 from 2021] 2026.04.01 03:12:30 UTC