Export Control
EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.Copyright
© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).Applicability
V2500-A1
Common Information
TASK 71-00-02-000-015-A00 (A1-PPBU) - Remove The Cabin Bleed Air System Ducts, Valves And Air System Sense Tubes, Removal-015
General
Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variants refer to the IPC.
For all parts identified in a different Chapter/Section/Subject the applicable Chapter/Section/Subject comes before Fig/item number.
Apply the approved CoMat 10-058 PENETRATING OIL before the removal of threaded parts. Let the parts soak before removal.
Remove and discard the lockwire before the tube or connector is disconnected.
When electrical connections are disconnected special plastic caps must be installed.
All the tubes, hoses and ducts removed in this procedure must have their maintenance completed, as given in the Component Maintenance Manual (CMM-THD-V2500-1IA).
Seal all openings to prevent contamination from unwanted materials.
Discard all rubber seal rings removed in this procedure.
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
NONEConsumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 10-058 PENETRATING OIL | 0AM53 | CoMat 10-058 |
Spares
NONESafety Requirements
NONEProcedure
Disconnect tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-100) from the HP bleed valve PNEUMATIC-HP BLEED VALVE (36-11-51, 01-050) and tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-500). Remove the attaching parts at clip positions 5862 and 5863 and remove the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-100).
Pre SBN 71-0272.
Disconnect tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-100) from the HP bleed valve PNEUMATIC-HP BLEED VALVE (36-11-51, 01-050) and tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-500). Remove the attaching parts at clip positions 5862 and 5931 and remove the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-100).
Disconnect the tubes PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-500) and PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-110) from the pressure regulator valve.
Remove the cabin bleed air system sense tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-100).
Remove the nut, the bolt and the washer that attach the connecting rod to the bracket ENGINE-SECURING FEATURES-HP COMPRESSOR CASES (72-41-00, 03-770).
Remove the nut, the bolt and the washer that attach the link to the brackets HPC Module - Attaching Parts (72-40-00, 01-760) and HPC Module - Attaching Parts (72-40-00, 01-770).
Remove the upper duct assembly.
Loosen the applicable clip positions to give sufficient clearance for tubes PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-500) and PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-110).
Remove the pressure regulator valve PNEUMATIC-BLEED PRESSURE REGULATOR VALVE (36-11-52, 01-050).
Disconnect the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-500) from the union PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-650). Loosen the applicable clip positions to give sufficient clearance for tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-500).
Remove the union and the K-seal from the duct PNEUMATIC-BLEED AIR DUCTS (36-11-49, 01-300).
Remove the Y-duct.
SUBTASK 71-00-02-020-036 Remove the Cabin Bleed Air System Ducts, Valves and Sense Tubes (Pre SBN 71-0272 and SBN 71-0272)
Disconnect and remove the hose PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-200) from the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-110).
NOTE
The hoses PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-200) and PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-700) must have their maintenance completed, as given in the Marston Palmer Ltd. Component Maintenance Manual (36-21-49).Disconnect and remove the hose PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-700) from the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-500).
Remove the attaching parts at clip positions 5907 and 5864, remove tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-500).
Remove the attaching parts at the clip positions 5865, 5494 and 5495, remove the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-500).
NOTE
The cabin bleed air system sense tubes must have their maintenance completed, as given in the B.F. Goodrich Component Maintenance Manual (36-21-49).Remove the attaching parts at the clip positions 5866 and 5871, remove the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-110).
Remove the cabin bleed air system sense tubes (36-21-49).
SUBTASK 71-00-02-020-038-A00 Remove the Remaining Cabin Bleed System Sense Tubes (Pre SBN 36-0001)
Disconnect and remove the hose PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-200) from the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-110).
NOTE
The hoses PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-200) and PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-700) must have their maintenance completed, as given in the Marston Palmer Ltd. Component Maintenance Manual (36-21-49).Disconnect and remove the hose PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-700) from the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-500).
Remove the attaching parts at clip positions 5907 and 5864, remove tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-500).
Remove the attaching parts at the clip positions 5865 and 5495, remove the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 01-500).
NOTE
The cabin bleed air system sense tubes must have their maintenance completed, as given in the B.F. Goodrich Component Maintenance Manual (36-21-49).Remove the attaching parts at the clip positions 5866 and 5871, remove the tube PNEUMATIC-PRESSURE INDICATING TUBES (36-21-49, 02-110).
Remove the cabin bleed air system sense tubes (36-21-49).
SUBTASK 71-00-02-020-038-B00 Remove the Remaining Cabin Bleed System Sense Tubes (SBN 36-0001)
Figure: Remove the Cabin Bleed Air System Ducts and Valves
Sheet 1

Figure: Remove the Cabin Bleed Air System Ducts and Valves
Sheet 2

Figure: Remove the Cabin Bleed Air System Sense Tubes
Sheet 1

Figure: Remove the Cabin Bleed Air System Sense Tubes
Sheet 2

Figure: Remove the Cabin Bleed Air System Sense Tubes
Sheet 3

