Installation of the Pneumatic System Tubes and Hoses

TASK 36-11-49-400-047-A
Installation of the Pneumatic System Tubes and Hoses

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 1M (3 FT)-ADJUSTABLE
No specific	AR	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )
No specific	Torque wrench: range to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP5063)	silicone lubricant

C. 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

D. 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 24-41-00-862-002-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 36-12-00-860-001-A	Pressurization of the Bleed System with the APU
TASK 36-12-00-860-002-A	Pressurization of the Bleed System through the HP Ground Connector
TASK 49-00-00-860-006-A	APU Shutdown by External Power
TASK 49-00-00-860-006-A-01	APU Shutdown 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 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 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
Pneumatic System Tubes and Hoses

3. Job Set-up
Subtask 36-11-49-860-064-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002) or (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that engine 1(2) is shutdown for a minimum of 5 minutes before you do this procedure.
(3) In the cockpit, on AIR COND panel 30VU:
(a) Make sure that the ENG 1(2) BLEED pushbutton-switch is released (the OFF legend is on).
(b) Make sure that the APU BLEED pushbutton-switch is released (the ON legend is off).
(c) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to operate the pneumatic system.
(4) In the cockpit, On ENG panel 115VU:
(a) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to start engine 1(2).
(5) On the HP ground connector:
(a) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to pressurize the pneumatic system.
(6) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR 1(2) pushbutton-switch is off.
(b) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to energize FADEC 1(2).
(7) Make sure that the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in position below the engine.

Subtask 36-11-49-010-079-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(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 36-11-49-040-066-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-49-865-066-A ** ON A/C NOT FOR ALL

D. 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/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22

4. Procedure
Subtask 36-11-49-420-055-C ** ON A/C NOT FOR ALL

A. Installation of the Pressure Regulator Valve (PRV) to Interface Hose Assembly
(1) If you use the APU to energize the electrical circuits, stop the APU:

For GTCP 36-300 APU (Ref. AMM D/O 49-00-00-86)
For APS 3200 APU (Ref. AMM TASK 49-00-00-860-006)
For 131-9(A) APU (Ref. AMM TASK 49-00-00-860-009).

(2) In the cockpit, on the SD bleed page:
(a) Make sure that the pressure and the temperature of the bleed-air duct system are in ambient conditions.

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

(3) Remove the COVER - PROTECTION from the hose assembly (5), the engine tube and the fitting on the PRV (50).

CAUTION: APPLY ONLY A THIN LAYER OF (CP5063) SILICON LUBRICANT TO THE THREADS OF THE HOSE TUBE ASSEMBLY COUPLING NUTS AND FITTING ON THE VALVES, AND REMOVE UNWANTED LUBRICANT. KEEP LUBRICANT FROM GOING INTO THE HOSE TUBE ASSEMBLY AND VALVES. IF TOO MUCH LUBRICANT IS USED, THEN LUBRICANT MAY CLOG THE HOSE TUBE ASSEMBLY AND ENTER THE VALVES AND DAMAGE THOSE COMPONENTS.

(4) Lubricate the threads of the coupling nut and the fitting threads on the PRV (50) with silicone lubricant (Material No.CP5063) .
(5) Connect the hose assembly (5) to the engine tube.
(6) Connect the hose assembly (5) to the fitting on the PRV (50).

CAUTION: USE A SECOND WRENCH TO HOLD THE FITTINGS WHEN YOU LOOSEN/TIGHTEN THE TUBE COUPLING NUTS. THIS PREVENTS DAMAGE TO THE TUBES.

(7) TORQUE the coupling nut on the two ends of the hose assembly (5) to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

Subtask 36-11-49-420-089-C ** ON A/C NOT FOR ALL

B. Installation of the Mid Stage Tee Duct to Pylon Interface Tube Assembly
(1) Remove the COVER - PROTECTION on the tube assembly (25), the union (35) and the hose assembly (10).
(2) Loosely connect the hose assembly (10) to the tube assembly (25).
(3) If necessary, install the union (35) on the mid stage tee duct. TORQUE the union to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

.
(4) Loosely connect the tube assembly (25) to the union (35) on the mid stage tee duct.
(5) Put the clamps (20) on the tube assembly (25). Use the bolts (15) to attach the clamps to the brackets at engine flange Sta. 221 (B9) (two locations).
(6) Put the clamp (20) on the tube assembly (25). Use the bolts (15) to attach the clamp (20) to the bracket at engine flange Sta. 215 (B8).
(7) Make sure the tube assembly (25) is in the correct position.
(8) TORQUE the hose assembly coupling nuts to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

NOTE: Use a second wrench to hold the tube when you torque the coupling nut on the hose.

(9) TORQUE the tube assembly (25) coupling nuts to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

NOTE: Use a second wrench to hold the union when you torque the coupling nut on the tube.

(10) TORQUE the bolts (15) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

Subtask 36-11-49-420-090-C ** ON A/C NOT FOR ALL

C. Installation of the PRV to HPV Tube Assembly
(1) Remove the COVER - PROTECTION from the hose tube assembly (40) and the fittings on the valves (30) and (50).

(2) Lubricate the threads of the coupling nuts and the fittings with silicone lubricant (Material No.CP5063) .
(3) Loosely connect the hose tube assembly (40) to the bleed pressure regulator valve (50).
(4) Loosely connect the hose tube assembly (40) to the HP regulator valve (30).
(5) Tighten the coupling nuts on the hose tube assembly (40) sufficiently to hold the hose tube assembly in position. Do not torque the coupling nuts at this time.
(6) Put the clamp (20) on the hose tube assembly (40). Attach the clamp to the bracket on the engine flange Sta. 215 (B8) with the bolt (15).
(7) Put the clamps (20) on the hose tube assembly (40). Attach the clamp to the bracket on the engine flange Sta. 215 (B8) with the bolt (15) and the nut (45).
(8) Make sure that the hose tube assembly (40) is in the correct position.
(9) TORQUE the coupling nuts at the two ends of the hose tube assembly (40) to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

NOTE: Use a second wrench to hold the fittings on the valves when you torque the coupling nuts on the hose tube assembly.

(10) TORQUE the bolt (15) and the nut (45) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

Subtask 36-11-49-720-060-A ** ON A/C NOT FOR ALL

D. Do this test:
(1) Pressurize the bleed system through the HP ground connector (Ref. AMM TASK 36-12-00-860-002) or with the APU (Ref. AMM TASK 36-12-00-860-001).
(2) 0n the panel 30VU, put the X-BLEED selector switch in the OPEN position.
(3) If you pressurize the bleed system through the HP ground connector, the supplied pressure 30 psi (2.07 bar) must be stable.
(4) Make sure that there are no leaks at the junctions of the installed duct.

5. Close-up
Subtask 36-11-49-865-067-A ** ON A/C NOT FOR ALL

A. 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/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22

Subtask 36-11-49-410-055-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 thrust reverser cowl doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the access platform(s).

Subtask 36-11-49-440-064-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-49-410-087-A ** ON A/C NOT FOR ALL

D. 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).

Subtask 36-11-49-862-060-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 01:10:37 UTC