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
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Description
TASK 72-50-50-100-000 Turbine Exhaust Case (TEC) Unit - The Table Of Part Numbers/Task Numbers, Cleaning-000
General
This TASK gives the procedures to clean the Turbine Exhaust Case (TEC) Assembly parts.
The practices and processes referred to in the procedure by the TASK number are in the SPM.
Part numbers with more REACh (Registration, Evaluation, Authorization, and Restriction of Chemicals) information are listed below:
2A2229-01
2A2230-01
2A2233-01
2A2234-01
Refer to How To Use (Engine Manual) Substances of Very High Concern and Safe Use Information.
References
Refer to SPM TASK 70-10-00-100-501 for important cleaning information that supplements the TASKs.
When more than one TASK is specified for a part, refer to SPM TASK 70-10-00-100-501 for selection of the applicable cleaning TASK.
Refer to SPM TASK 70-10-00-100-501 for the TASK numbers given below.
Procedure
The parts in the Table are listed in numerical order by ATA number.
The TASK numbers in Table are listed in sequential numerical orded.
Table 1. ATA
PART NAME.
ITEM PART NO.
TASK
72-50-52
No. 5 Bearing Retaining Plate (ST)
4P8075
72-50-52
No. 5 Bearing Retaining Plate (ST)
2A1213
72-50-52
No. 5 Roller Bearing (ST)
2A2136, 2A2255
72-50-52
No. 5 Bearing Strainer Element (ST)
2A1264
72-50-52
No. 5 Bearing Deaerator (ST)
4P8097, 4P8098
72-50-53
No. 5 Bearing Oil Feed Tube (ST)
4P8088
72-50-53
Turbine Exhaust Case (TEC) (ST)
4A8014, 4A8014-001, 4A8025, 4A8025-001, 4B8060, 4B8068
TASK 70-11-03-300-503 (See note)
TASK 70-11-13-300-503 (See note)
TASK 70-11-54-300-503 (See note)
TASK 70-12-09-120-501 (See note)
NOTE
Ensure that the No. 5 bearing heatshield and the carbon seal housing has been removed.NOTE
Pressure flush with water all cavities and tubes.NOTE
If TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating or chrome plate applied in previous repairs of case.NOTE
If necessary, abrasive blast by TASK 70-12-09-120-501 only after chemical cleaning by TASK 70-11-54-300-503. Mask all openings prior to blasting per TASK 70-12-09-120-501.72-50-53
Turbine Exhaust Case (TEC) (ST)
2A1209-01, 2A2620-01, 2A3111-01, 2A3183-01, 2A3183-101, 2A3455-01, 2A4258-01, 2A4263-01
TASK 70-11-03-300-503 (See note)
TASK 70-11-13-300-503 (See note)
TASK 70-11-54-300-503 (See note)
TASK 70-12-09-120-501 (See note)
NOTE
Pressure flush with water all cavities and tubes.NOTE
If TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating or chrome plate applied in previous repairs of case.NOTE
If necessary, abrasive blast by TASK 70-12-09-120-501 only after chemical cleaning by TASK 70-11-54-300-503. Mask all openings prior to blasting per TASK 70-12-09-120-501.72-50-53
No. 5 Bearing Carbon Seal Housing (ST)
4P8036
TASK 70-12-07-120-501 (See note)
NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 only after chemical cleaning by TASK 70-11-13-300-503.72-50-53
No. 5 Bearing Carbon Seal Housing (ST)
2A1365
TASK 70-12-07-120-501 (See note)
NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 only after chemical cleaning by TASK 70-11-13-300-503.72-50-53
No. 5 Bearing Pressure And Scavenge Tube Heat Shields (ST)
2A2171-01, 2A2174-01, 2A2206-01, 2A2208-01, 2A2229-01, 2A2230-01, 2A2233-01, 2A2234-01
TASK 70-11-26-300-503 (See note)
TASK 70-11-03-300-503 (See note)
TASK 70-12-07-120-501 (See note)
NOTE
For TASK 70-11-26-300-503 or TASK 70-11-03-300-503 use wipe method.NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 only after chemical cleaning by TASK 70-11-26-300-503 or TASK 70-11-03-300-503.72-50-53
Bulkhead Tube Nipple (ST)
2A2175
TASK 70-12-07-120-501 (See note)
NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 only after chemical cleaning by TASK 70-11-13-300-503.72-50-53
TEC Brackets (Steel) (NI)
2A2176, 2A2177, 2A2212, 2A2232
TASK 70-12-07-120-501 (See note)
NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 only after chemical cleaning by TASK 70-11-13-300-503.72-50-53
No. 5 Bearing Front Thermal Heat Shield Segments (ST)
2A1768-01, 2A1769-01
TASK 70-11-03-300-503 (See note)
TASK 70-12-07-120-501 (See note)
NOTE
For TASK 70-11-26-300-503 or TASK 70-11-03-300-503 use wipe method.NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 only after chemical cleaning by TASK 70-11-26-300-503 or TASK 70-11-03-300-503.72-50-53
No. 5 Bearing Rear Thermal Heat Shields (Steel) (Foil inside of sheet metal )
2A1766-01, 2A2104-01
TASK 70-11-26-300-503 (See note)
TASK 70-11-03-300-503 (See note)
TASK 70-12-07-120-501 (See note)
NOTE
For TASK 70-11-26-300-503 or TASK 70-11-03-300-503 use wipe method.NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 with low pressure only after chemical cleaning by TASK 70-11-26-300-503 or TASK 70-11-03-300-503.72-50-53
No. 5 Bearing Front Heat Shield (ST)
2A1354
72-58-01
No. 5 Bearing Cover (with insulation installed) (ST)
4B8050
TASK 70-11-26-300-503 (See note)
TASK 70-11-03-300-503 (See note)
TASK 70-12-07-120-501 (See note)
NOTE
For TASK 70-11-26-300-503 or TASK 70-11-03-300-503 use wipe method.NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 with low pressure only after chemical cleaning by TASK 70-11-26-300-503 or TASK 70-11-03-300-503.72-58-01
No. 5 Bearing Cover (with insulation removed) (ST)
2A1219
TASK 70-12-07-120-501 (See note)
NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 only after chemical cleaning by TASK 70-11-13-300-503.72-58-01
No. 5 Bearing Thermal Shield (insulated) (ST)
2A1353-01
TASK 70-11-26-300-503 (See note)
TASK 70-11-03-300-503 (See note)
TASK 70-12-07-120-501 (See note)
NOTE
For TASK 70-11-26-300-503 or TASK 70-11-03-300-503 use wipe method.NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 with low pressure only after chemical cleaning by TASK 70-11-26-300-503 or TASK 70-11-03-300-503.72-58-01
No. 5 Bearing Thermal Shield (insulation removable) (ST)
2A2099-01
TASK 70-11-26-300-503 (See note)
TASK 70-11-03-300-503 (See note)
TASK 70-11-13-300-503 (See note)
TASK 70-12-07-120-501 (See note)
NOTE
For TASK 70-11-26-300-503 or TASK 70-11-03-300-503 use wipe method.NOTE
TASK 70-11-13-300-503 only if insulation is removed.NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 with low pressure only after chemical cleaning by TASK 70-11-26-300-503, TASK 70-11-03-300-503 or TASK 70-11-13-300-503.72-58-01
No. 5 Bearing Shield (ST)
2A1355
72-58-02
No. 5 Bearing Oil Transfer Tube (ST)
2A1212
TASK 70-12-07-120-501 (See note)
NOTE
If necessary, abrasive blast by TASK 70-12-07-120-501 only after chemical cleaning by TASK 70-11-13-300-503.72-58-02
No. 5 Bearing Oil Nozzle (ST)
2A1211
72-58-02
TEC Module Remaining Parts- non-ATA numbered parts
Various