TASK 72-42-20-300-015 No. 4 Bearing Compartment Tubes - Related Parts - Nickel Plate The Outer Lands Of The No. 4 Bearing Cooling Tube, Repair-015 (VRS3576)

DMC:V2500-A0-72-42-2000-00A-647A-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 72-42-20-300-015 No. 4 Bearing Compartment Tubes - Related Parts - Nickel Plate The Outer Lands Of The No. 4 Bearing Cooling Tube, Repair-015 (VRS3576)

Effectivity

FIG/ITEM

PART NO.

05-200

2A1044

Material of Component

PART IDENT

SYMBOL

MATERIAL

No. 4 Bearing Cooling Tube

Stainless Steel

General

Price and availability - Refer to IAE.

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Nickel plating eqiupmentLOCALNickel plating equipment

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-20-320-052 Machine the No. 4 Bearing Cooling Tube Outer Surfaces

      1. Machine the No. 4 bearing cooling tube outer surfaces.

      1. Refer to Figure.

      2. Remove the least amount of material. Do not go below 0.676 in. (16.00 mm) diameter.

    2. SUBTASK 72-42-20-330-051 Nickel Plating of the Machined Surface

      1. Nickel plate the machined surface to 0.7165 in. (18.20 mm) diameter.

      1. Refer to SPM TASK 70-33-25-300-503.

        NOTE

        Plating is permitted outside the machined area but must be removed.

    3. SUBTASK 72-42-20-320-053 Machining the Outer Tube Surfaces

      1. Finish machine the outer tube surface to 0.6965 to 0.6995 in. (17.69 to 17.77 mm) diameter.

      1. Refer to Figure.

        NOTE

        Maintain minimum wall thickness of 0.072 in. (1.83 mm).

    4. SUBTASK 72-42-20-320-054 Machine the No. 4 Bearing Cooling Tube Outer Surfaces

      1. Machine the No. 4 bearing cooling tube outer surfaces.

      1. Refer to Figure.

      2. Remove the least amount of material.

      3. Do not go below 0.6755 in. (17.16 mm) diameter.

    5. SUBTASK 72-42-20-330-052 Nickel Plating of Machined Surfaces

      1. Nickel plate the machined surface up to 0.7175 in. (18.22 mm) diameter.

      1. Refer to Figure.

        NOTE

        Plating is permitted outside the machined area but must not be removed.

    6. SUBTASK 72-42-20-320-055 Machining Outer Tube Surfaces

      1. Finish machine the outer tube surface to 0.6955 to 0.6975 in. (17.67 to 17.72 mm) diameter.

      1. Refer to Figure.

        NOTE

        Maintain minimum wall thickness of 0.072 in. (1.83 mm).

    7. Figure: No. 4 Bearing Cooling Tube Outer Land Wear Dimensions

    No. 4 Bearing Cooling Tube Outer Land Wear Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Nickel plating equipment
Tool Name:Nickel plating eqiupment