TASK 72-42-20-300-026 No. 4 Bearing Compartment Cooling Air Tube - Machine The Connector Spherical Seat, Repair-026 (VRS3798)

DMC:V2500-A0-72-42-2051-00A-659A-C|Issue No:001.00|Issue Date:2013-11-01

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 72-42-20-300-026 No. 4 Bearing Compartment Cooling Air Tube - Machine The Connector Spherical Seat, Repair-026 (VRS3798)

Effectivity

FIG/ITEM

PART NO.

05-020

2A1031-01

05-020

2A3187-01

Material of component

PART IDENT

SYMBOL

MATERIAL

No. 4 bearing outer cooling tube

Nickel alloy

General

Price and availability - none.

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Machining equipmentLOCALMachining equipment

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-20-350-075 Remove the Thrust Wire and Tube Nut from the No.4 Bearing Outer Cooling Tube Assembly

      1. Remove the thrust wire and tube nut.

      1. Repair, VRS3435 (Repair-006) TASK 72-42-20-300-006.

    2. SUBTASK 72-42-20-220-130 Examine the No.4 Bearing Cooling Tube Assembly, Tube Connector Spherical Seat

    1. Refer to Figure.

      2. Examine the spherical seat for scratches or damages.

      1. Scratches or damage must not be more than 0.005 in. (0.13 mm) in depth.

    3. SUBTASK 72-42-20-320-093 Machine the Connector Spherical Seat

    1. Refer to Figure.

      2. Machine the spherical seat to remove scratches or damage to the dimensions given in the figure.

      1. Keep material removal to a minimum necessary to remove the damage.

    4. SUBTASK 72-42-20-110-201 Clean the No.4 Bearing Outer Cooling Tube

      1. Clean the tube

      1. Refer to SPM TASK 70-11-03-300-501.

    5. SUBTASK 72-42-20-230-077 Do a Fluorescent Penetrant Inspection of the Repaired Area of the No.4 Bearing Outer Cooling Tube

      1. Do a fluorescent penetrant inspection of the repaired area.

      1. Refer to SPM TASK 70-23-05-230-501.

      2. No cracks are permitted.

    6. SUBTASK 72-42-20-350-076 Replace the Thrust Wire and Tube Nut from the No.4 Bearing Outer Cooling Tube Assembly

      1. Install the thrust wire and tube nut.

      1. Repair, VRS3435 (Repair-006) TASK 72-42-20-300-006.

    7. SUBTASK 72-42-20-220-131 Examine the No.4 Bearing Outer Cooling Tube Assembly

    1. Refer to Figure.

      2. Examine the connector spherical seat surface.

      1. Refer to Inspection-000 TASK 72-42-20-200-100.

    8. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Machining equipment
Tool Name:Machining equipment