Removal of the Pressure Indicating Tubes

TASK 36-21-49-000-010-B
Removal of the Pressure Indicating Tubes

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 - PROTECTION
No specific	AR	WARNING NOTICE(S)

B. 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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
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 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
Pressure Indicating Tubes and Hoses
Pressure Indicating Tubes and Hoses (PRE SB36-1040, PRE SBN36-0007)
Pressure Indicating Tubes and Hoses (POST SB36-1040, POST SBN36-0007)

3. Job Set-up
Subtask 36-21-49-861-051-A ** ON A/C NOT FOR ALL

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

Subtask 36-21-49-941-059-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) Make sure that the engine 1(2) shut down occured not less than 5 minutes before you do this procedure.
(2) On the AIR COND panel 30VU:

make sure that the ENG 1(2) BLEED pushbutton switch is released (the OFF legend is on),
make sure that the APU BLEED pushbutton switch is released (the ON legend is off),
put a WARNING NOTICE(S) to tell persons not to operate the pneumatic system.

(3) On the ENG panel 115VU:

put a WARNING NOTICE(S) to tell persons not to start the engine 1(2).

(4) On the HP ground connector:

Put a WARNING NOTICE(S) to tell persons not to pressurize the pneumatic system.

(5) On the ENG section of the maintenance panel 50VU:

make sure that the ON legend of the ENG/FADEC GND PWR 1(2) pushbutton switch is off,
put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 36-21-49-010-055-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the fan cowl doors (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 below the engine.

Subtask 36-21-49-040-053-A ** ON A/C NOT FOR ALL

D. Deactivate the Thrust Reverser Hydraulic Control Unit

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 36-21-49-010-053-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

4. Procedure
Subtask 36-21-49-020-051-C ** ON A/C NOT FOR ALL

A. Removal of the Pressure Indicating Tubes
(1) Remove the support clips, the bolts and the spacers from the tubes (4) and (5). Write the positions where the removed items were installed. They must be installed in the same positions.
(2) Cut and discard the lockwire which safeties the tube connections.
(3) Disconnect and remove the tubes (4) and (5).
(4) Put applicable COVER - PROTECTION on all disconnected tube ends.

Subtask 36-21-49-020-052-A ** ON A/C NOT FOR ALL

B. Removal of the Pressure Indicating Tubes (PRE SB36-1040, PRE SBN36-0007)

Pressure Indicating Tubes and Hoses (PRE SB36-1040, PRE SBN36-0007) ** ON A/C NOT FOR ALL

(1) Remove the support clips, bolts, nuts, spacers, sleeve and washers from the tubes (3), (4), (5), (6) and (8). Write the positions where the removed items were installed. They must be installed in the same positions.
(2) Cut and discard the lockwire which safeties the tube connections.
(3) Disconnect and remove the tubes (3), (4), (5), (6) and (8).
(4) Put an applicable COVER - PROTECTION on all the disconnected tube ends.

Subtask 36-21-49-020-054-A ** ON A/C NOT FOR ALL

C. Removal of the Pressure Indicating Tubes (POST SB36-1040, POST SBN36-0007)

Pressure Indicating Tubes and Hoses (POST SB36-1040, POST SBN36-0007) ** ON A/C NOT FOR ALL

(1) Remove the support clips, the bolts and the spacers from the tubes (4) and (5). Write the positions where the removed items were installed. They must be installed in the same positions.
(2) Cut and discard the lockwire which safeties the tube connections.
(3) Disconnect and remove the tubes (4) and (5).
(4) Put an applicable COVER - PROTECTION on all the disconnected tube ends.

[Rev.10 from 2021] 2026.04.01 01:16:17 UTC