TASK 75-22-41-840-001 No. 4 Bearing Compartment Cooler (ACAC) Air Ducts - Rework The Duct Lugs, Rework-001 - SBE 75-0033

DMC:V2500-A0-75-22-4101-00A-933A-C|Issue No:001.00|Issue Date:2014-05-01

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 75-22-41-840-001 No. 4 Bearing Compartment Cooler (ACAC) Air Ducts - Rework The Duct Lugs, Rework-001 - SBE 75-0033

Effectivity

FIG/ITEM

PART NO.

01-300

5T8199

01-400

5T8128

General

The practices and processes referred to in the procedure by the TASK numbers are in the SPM.

Refer to the indicated Service Bulletin for specific application requirements.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Files, rotating (Silicon carbide)LOCALFiles, rotating (Silicon carbide)
Hand held pneumatic grinderLOCALHand held pneumatic grinder

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 75-22-41-350-052 Rework the Inlet/Outlet Duct Lug, No.4 Bearing Compartment Air Cooler

    1. Refer to Figure and Figure.

      2. Rework the inlet outlet duct lug, no.4 bearing compartment air cooler.

      1. CAUTION

        TITANIUM COMPONENTS
        USE SILICON CARBIDE TYPE ABRASIVE WHEELS, STONES AND PAPERS TO DRESS, BLEND AND POLISH THIS COMPONENT.
        DO NOT USE FORCE WITH MECHANICAL CUTTERS OR THE MATERIAL WILL BECOME TOO HOT.
        THE MATERIAL WILL OXIDIZE AND CRACK IF MECHANICAL CUTTERS ARE USED HEAVILY. THIS HAS OCCURRED IF THE COMPONENT SHOWS DARK. IF ANY TIME THIS COLORATION OCCURS THE COMPONENT MUST BE REJECTED.

        Set-up and machine the inlet/outlet duct lug of no.4 bearing compartment air cooler.

        2. Finish the machine area.

        1. Refer to SPM TASK 70-32-06-320-501.

        2. Use hand pneumatic grinder or equivalent.

    2. SUBTASK 75-22-41-350-053 Reidentify the 5T8199, Inlet Duct Lug of No. 4 Bearing Compartment Air Cooler

      1. Delete current part number with a single line and renumber new part number adjacent to existing part number by electrochemical marking or vibration peening.

      1. Refer to SPM TASK 70-09-00-400-501.

        Current - 5T8199.

        Renumber - 5T0114.

        NOTE

        All raised metal which exceeds 0.0009 in. (0.023 mm) must be removed.

    3. SUBTASK 75-22-41-350-054 Reidentify the 5T8128, Outlet Duct Lug of No.4 Bearing Compartment Air Cooler

      1. Delete current part number with a single line and renumber new part number adjacent to existing part number by electrochemical marking or vibration peening.

      1. Refer to SPM TASK 70-09-00-400-501.

        Current - 5T8128.

        Renumber - 5T0115.

        NOTE

        All raised metal which exceeds 0.0009 in. (0.023 mm) must be removed.

    4. Figure: ACAC Inlet/Outlet Ducts - Location of Alteration

    ACAC Inlet/Outlet Ducts - Location of Alteration

    Figure: ACAC Inlet/Outlet Ducts - Before and After Alteration

    ACAC Inlet/Outlet Ducts - Before and After Alteration

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Link not Found
Manufacturer Code:LOCAL
Tool Number:Hand held pneumatic grinder
Tool Name:Hand held pneumatic grinder