TASK 72-50-00-100-000 Clean the LP Turbine Assembly Parts (Cleaning)

DMC:V2500-A0-72-50-0000-00A-207A-C|Issue No:003.00|Issue Date:2018-08-01

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

All

Common Information

TASK 72-50-00-100-000 Clean the LP Turbine Assembly Parts (Cleaning)

General

This TASK gives the procedure to clean Low Pressure Turbine (LPT) Assembly parts. The practices and processes referred to in the procedure by TASK number are in the SPM.

Reference

Refer to the SPM for data on these items

Cleaning, Policy and Methods, SPM TASK 70-10-00-100-501

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

CAUTION

DO NOT CLEAN THE PARTS IF THERE ARE SIGNS OF UNUSUAL RUNNING CONDITIONS LIKE OIL FIRE OR TITANIUM FIRE BEFORE AGREED WITH THE IAE TECHNICAL SERVICES. REFER TO TASK 72-00-50-220-001 (INSPECTION/CHECK-001).

Procedure

    Table 1. Cleaning Procedures

    ATA

    PART NAME

    PART NO.

    SPM TASK

    72-50-00

    LPT Stage 6 Inner Air Seal

    3A0078, 3A3047, 3A3063

    72-50-00

    LPT Remaining Parts

    4W0002, 4W0587 (Bolts), 4W0590, AS42915 (Nuts), 662138

    72-50-00

    LPT Inner Damper Ring

    3A2981

    72-50-10

    LPT Counter balance Weight

    3A0708

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-07-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    72-50-10

    LPT Flanged Sleeve Bushing

    3A0156

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-07-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    72-50-10

    LPT Blanking Plug

    3A0801

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-07-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    72-50-10

    Sleeve Flanged Bushing And Blanking Plug - Clean Before And After Borescope Inspection

    3A0156, 3A0801

    72-50-10

    LPT Stage 3, 4, 5, 6, 7 (Bladed) Rotor Assemblies

    (See Note)

    72-50-10

    LPT Stage 3, 4, 5, 6, 7 (Bladed) Rotor Assemblies

    (See Note)

    NOTE

    Spray and thoroughly rinse after TASK TASK 70-11-03-300-503.

    72-50-10

    LPT Remaining Parts

    4W0101, MS9566-05 (Bolts),

    3A0155 (Spacer Plate)

    72-50-21

    LPT Case

    3A0807, 3A0990, 3A0991, 3A1908, 3A2183, 3A2265, 3A2447, 3A2533

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK 70-12-08-300-503 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    NOTE

    Mask all cooling holes, stop drill holes and coated areas before blasting.

    NOTE

    After wet blast, blow out holes with compressed air to remove remaining blasting media.

    72-50-21

    LPT Stage 5 Front Heat Shield

    3A0152, 3A1964, 3A1968

    72-50-21

    LPT Stage 4 Rear Heat Shield

    3A0150, 3A1956, 3A1962

    72-50-21

    LPT Stage 4 Front Heat Shield

    3A0148, 3A1945, 3A1949

    72-50-21

    LPT Stage 3 Rear Heat Shield

    3A0859, 3A1937, 3A1943

    72-50-21

    LPT Stage 3 Front Heat Shield

    3A0143, 3A1922, 3A1926, 3A1928, 3A1930

    72-50-21

    LPT Case Clean Before And After Borescope Inspection

    3A0807, 3A0990, 3A0991, 3A1908, 3A2183, 3A2265, 3A2447, 3A2533

    NOTE

    MAKE SURE THAT NO DIRT OR FOREIGN OBJECTS ENTER IN TO THE BORESCOPE LOCATION HOLE OR SCREW HOLES.

    72-50-21

    LPT Stage 5 Rear Heat Shield

    3A1975, 3A1981

    72-50-21

    LPT Stage 3 Seal Segment

    3A1932, 3A1935

    72-50-21

    LPT Stage 4 Seal Segment

    3A1951, 3A1954

    72-50-21

    LPT Stage 5 Seal Segment

    3A1970, 3A1973

    72-50-22

    LPT Stage 7 Vane

    3A0487CL50, 3A1783CL50, 3A1827, 3A2307, 3A2497, 3A3130

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    NOTE

    Do not blast the honeycomb seal.

    72-50-22

    LPT Stage 6 Vane

    3A0026CL50, 3A1780CL50, 3A1826, 3A2057CL50, 3A2306, 3A2486, 3A3127

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    NOTE

    Do not blast the honeycomb seal.

    72-50-22

    LPT Stage 5 Vane

    3A0025CL45

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    NOTE

    Do not blast the honeycomb seal.

    72-50-22

    LPT Stage 5 Vane

    3A1825, 3A2305, 3A3120, 3A3122, 3A3123

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    NOTE

    Do a heat tint test by TASK TASK 70-28-01-280-501 after abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501.

    NOTE

    Do not blast the honeycomb seal.

    72-50-22

    LPT Stage 4 Vane

    3A0637CL45, 3A2131, 3A2244, 3A2274, 3A2284, 3A2417, 3A2898, 3A3097, 3A3101, 3A3105, 3A3112, 3A3113, 3A3114, 3A3119

    (See Note)

    (See Note)

    (See Note)

    Do not blast the honeycomb seal.

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    NOTE

    Do a heat tint test by TASK TASK 70-28-01-280-501 after abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501.

    NOTE

    Do not blast the honeycomb seal.

    72-50-22

    LPT Stage 3 Vane

    3A0641CL45, 3A0645CL45, 3A1729CL45, 3A1733CL45, 3A2073CL33, 3A2077CL33, 3A2243CL33, 3A2245CL33, 3A2412, 3A2415, 3A2926, 3A2929

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    NOTE

    Do a heat tint test by TASK TASK 70-28-01-280-501 after abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501.

    72-50-23

    LPT Stage 7 Outer Shroud Seal Segment

    3A0666, 3A2956

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-06-120-501only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Do not blast the honeycomb seal.

    72-50-23 LPT

    Stage 5 Outer Shroud Seal Segment

    3A0727, 3A1920, 3A2953, 3A3093

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Do not blast the honeycomb seal.

    72-50-23

    LPT Stage 4 Outer Shroud Seal Segment

    3A0723, 3A1918, 3A2950, 3A3090

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Do not blast the honeycomb seal.

    72-50-23

    LPT Stage 3 Outer Shroud Seal Segment

    3A0719, 3A1916, 3A2050, 3A2234, 3A2947, 3A3087, 3A3102, 3A3104

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Do not blast the honeycomb seal.

    72-50-24

    LPT Inner Diffuser Duct Segment

    3A0108, 3A0771, 3A2493

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Do a heat tint test by TASK TASK 70-28-01-280-501 after abrasive blast by TASK TASK 70-12-06-120-501.

    NOTE

    Do not blast the honeycomb seal.

    72-50-24

    LPT Inner Diffuser Duct Support

    3A0104, 3A1564, 3A2201, 3A2202, 3A2525, 3A2529

    72-50-24

    LPT Inner Diffuser Duct Support Ring

    3A0113, 3A1560, 3A2523, 3A2527

    72-50-24

    LPT Stage 3 Inner Air Seal Ring

    3A0961, 3A1566, 3A3108, 3A3109

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-08-300-503, TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Do not blast the honeycomb seal.

    72-50-24

    LPT Inner Diffuser Duct Remaining Parts

    ST1449-06

    72-50-25

    LPT Outer Diffuser Support

    3A0084, 3A1907

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Remove nuts before abrasive blast.

    72-50-25

    LPT Outer Diffuser Segment

    3A0090, 3A0958

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Do a heat tint test by TASK TASK 70-28-01-280-501 after abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-06-120-501.

    72-50-25

    LPT Outer Diffuser Segment

    3A1791, 3A2482

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    72-50-25

    LPT Outer Diffuser Support Remaining Parts

    ST1449-03

    72-50-31

    LPT Stage 7 Disk

    3A0717, 3A1987, 3A2424, 3A2512, 3A2514

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-08-300-503 only after chemical cleaning TASK TASK 70-11-54-300-503.

    NOTE

    If the component is not clean, then do TASK TASK 70-11-54-300-503 again one time only but after wet abrasive blast.

    NOTE

    Mask the coated areas before blasting.

    72-50-31

    LPT Stage 6 Disk

    3A0066, 3A1986, 3A2996

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-08-300-503 only after chemical cleaning TASK TASK 70-11-54-300-503.

    NOTE

    If the component is not clean, then do TASK TASK 70-11-54-300-503 again one time only but after wet abrasive blast.

    NOTE

    Mask the coated areas before blasting.

    72-50-31

    LPT Stage 5 Disk

    3A0795, 3A1665, 3A2153, 3A2430

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-08-300-503 only after chemical cleaning TASK TASK 70-11-54-300-503.

    NOTE

    If the component is not clean, then do TASK TASK 70-11-54-300-503 again one time only but after wet abrasive blast.

    NOTE

    Mask the coated areas before blasting.

    72-50-31

    LPT Stage 4 Disk

    3A0794, 3A1984

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-08-300-503 only after chemical cleaning TASK TASK 70-11-54-300-503.

    NOTE

    If the component is not clean, then do TASK TASK 70-11-54-300-503 again one time only but after wet abrasive blast.

    NOTE

    Mask the coated areas before blasting.

    72-50-31

    LPT Stage 3 Disk

    3A0713, 3A2151, 3A2428, 3A2508, 3A2513

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If TASK TASK 70-11-54-300-503 is used, it is necessary to replace the thermal spray coating on the part.

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-13-300-503 or TASK TASK 70-12-08-300-503 only after chemical cleaning TASK TASK 70-11-54-300-503.

    NOTE

    If the component is not clean, then do TASK TASK 70-11-54-300-503 again one time only but after wet abrasive blast.

    NOTE

    Mask the coated areas before blasting.

    72-50-32

    LPT Stage 7 Blade

    3A0887, 3A1807, 3A2477

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    72-50-32

    LPT Stage 6 Blade

    3A0886, 3A1806, 3A2704

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    72-50-32

    LPT Stage 5 Blade

    3A0885, 3A1805, 3A2475

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    72-50-32

    LPT Stage 4 Blade

    3A0884, 3A2923

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    72-50-32

    LPT Stage 4 Blade

    3A1804, 3A2374

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    NOTE

    Do a heat tint test by TASK TASK 70-28-01-280-501 after abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501.

    72-50-32

    LPT Stage 3 Blade

    3A0883, 3A2053, 3A2055, 3A2373

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503 or TASK TASK 70-11-54-300-503.

    NOTE

    Do a heat tint test by TASK TASK 70-28-01-280-501 after abrasive blast by TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501.

    72-50-33

    LPT Stage 7 Rotating Airseal

    3A0797, 3A1741, 3A2522

    (See Note)

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-08-300-503, TASK TASK 70-12-13-300-503, TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Mask the coated areas before blasting.

    NOTE

    Blasting of bolt hole area and snap diameter area (A3.1, A3.2 and A4 of Repair, VRS4212, TASK 72-50-33-300-001 and Repair and Repair, VRS4060, TASK 72-50-33-300-039) is not permitted.

    72-50-33

    LPT Stage 6 Rotating Airseal

    3A0796, 3A1988

    (See Note)

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-08-300-503, TASK TASK 70-12-13-300-503, TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Mask the coated areas before blasting.

    NOTE

    Blasting of bolt hole area and snap diameter area (A3.1, A3.2 and A4 of Repair, VRS4219, TASK 72-50-33-300-008) is not permitted.

    72-50-33

    LPT Stage 5 Rotating Airseal

    3A0793, 3A1985

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-08-300-503, TASK TASK 70-12-13-300-503, TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Mask the coated areas before blasting.

    NOTE

    Blasting of bolt hole area and snap diameter area (A3.1, A3.2 and A4 of Repair, VRS4226, TASK 72-50-33-300-015) is not permitted.

    72-50-33

    LPT Stage 5 Rotating Airseal

    3A2423

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-08-300-503, TASK TASK 70-12-13-300-503 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Mask the coated areas before blasting.

    NOTE

    Blasting of bolt hole area and snap diameter area (A3.1, A3.2 and A4 of Repair, VRS4389, TASK 72-50-33-300-048) is not permitted.

    72-50-33

    LPT Stage 4 Rotating Airseal

    3A0792, 3A1983

    (See Note)

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-08-300-503, TASK TASK 70-12-13-300-503, TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Mask the coated areas before blasting.

    NOTE

    Blasting of bolt hole area and snap diameter area (A3.1, A3.2 and A4 of Repair, VRS4233, TASK 72-50-33-300-022) is not permitted.

    72-50-33

    LPT Stage 4 Rotating Airseal

    3A2422

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-08-300-503, TASK TASK 70-12-13-300-503 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Mask the coated areas before blasting.

    NOTE

    Blasting of bolt hole area and snap diameter area (A3.1, A3.2 and A4 of Repair, VRS4461, TASK 72-50-33-300-053) is not permitted.

    72-50-33

    LPT Stage 3 Rotating Airseal

    3A0963

    (See Note)

    (See Note)

    (See Note)

    (See Note)

    NOTE

    If necessary, abrasive blast by TASK TASK 70-12-08-300-503, TASK TASK 70-12-13-300-503, TASK TASK 70-12-09-120-501 or TASK TASK 70-12-06-120-501 only after chemical cleaning TASK TASK 70-11-13-300-503.

    NOTE

    Mask the coated areas before blasting.

    NOTE

    Blasting of bolt hole area and snap diameter area (A3.1, A3.2 and A4 of Repair, VRS4240, TASK 72-50-33-300-029) is not permitted.

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Update Task to make Master Cleaning Task per EC17VM518