TASK 72-00-42-220-003 Combustion System - Examine The Outer Combustion Chamber Assembly Front Face at Interface J-42/60, Inspection-003

DMC:V2500-A0-72-00-4200-02A-300A-B|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 72-00-42-220-003 Combustion System - Examine The Outer Combustion Chamber Assembly Front Face at Interface J-42/60, Inspection-003

General

The word 'reject' after an interface inspection statement requires that further detailed inspection or repair as applicable, of the affected area be accomplished using data in the applicable ATA section of the part in question. Contact IAE for FAA approved data if the referenced TASK is not in the manual.

Refer to TASK 72-00-00-200-001 (examine the modular/non-modular interfaces) before you do this TASK.

The policy that is necessary for inspection is given in the SPM TASK 70-20-01-200-501.

You can do the inspections that follow if the outer combustion chamber is removed (Refer to TASK 72-00-42-020-001-001).

Use a bright light and a 3X magnifying glass to find surface cracks.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 2P16148 Check and correct fixture0AM53IAE 2P161481
IAE 2P16192 Plug gage0AM53IAE 2P161921
IAE 2P16458 Length gage0AM53IAE 2P164581
IAE 2P16193 Length gage0AM53IAE 2P161931

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-00-42-220-070 Visually Examine the Shell of the Outer Combustion Chamber Assembly at Location 1

    1. Refer to Figure.

      2. Dents less than 0.010 in (0.254 mm) in depth and 1.000 sq in. (645.000 sq mm) in area

      1. Accept

      3. Burn holes, cracks or blocked holes

      1. Reject

    2. SUBTASK 72-00-42-220-071 Visually Examine the Segment Nuts and Washers of the Outer Combustion Chamber Assembly at Location 2

    1. Refer to Figure.

      2. Nuts that are not there or loose washers

      1. Reject

    3. SUBTASK 72-00-42-220-072 Visually Examine the Rear Outside Diameter Seal of the Outer Combustion Chamber Assembly at Location 4

    1. Refer to Figure.

      2. Local wear if the base metal does not show. If base metal does show, it must be less than 20 percent of the total coated area and less than 20 percent of the total axial width of the coated area.

      1. Accept

      3. Chipped or spalled hardface is less than 20 percent of the total coated area. Chipped or spalled hardface must be less than 20 percent of the width of the coated area.

      1. Accept

      4. Other than Step or Step

      1. Reject

    4. SUBTASK 72-00-42-220-088 Visually Examine the Outer Combustion Chamber Segments at Location 6

    1. Refer to Figure.

      2. There are segment cracks less than 1.000 in. (25.400 mm). All cracks must be more than 0.700 in. (17.780 mm) from a circumferential edge

      1. Accept

      3. There is edge burnback of less than 0.400 in. (10.160 mm) in row 1 or less than 0.200 in. (5.080 mm) in rows 2, 3, 4, or 5. There can be no damage to the rails around the igniter holes in the igniter segment or no attachment post can be seen

      1. Accept

      4. There is no limit of surface burns

      1. Accept

      5. There are up to three burn holes for each outer combustion chamber liner assembly that are less than 0.200 in. (5.080 mm) long. There can be no more than one burn hole for each segment, no damage to the rails around the igniter holes in the igniter segment, no combustion hole rim damage or no attachment post can be seen

      1. Accept

      6. There is spalled, chipped or cracked ceramic coating

      1. Accept

      7. There is a segment that shows cracks, burns or the two that can possibly cause a piece of segment metal more than 0.500in. (12.700 mm) long to break off

      1. Reject

      8. Other than Step, Step, Step, Step or Step

      1. Reject

    5. SUBTASK 72-00-42-220-089 Visually Examine the Outer Combustion Chamber Bulkhead Segments at Location 7

    1. Refer to Figure.

      2. There are cracks less than 0.100 in. (2.540 mm)

      1. Accept

      3. There are cracks up to 0.500 in. (12.700 mm) long that are at least 90 degrees apart. Cracks can not go through each other or be possible for this to occur

      1. Accept

      4. There is no limit of surface burns

      1. Accept

      5. There is a maximum of two segments that have one burn hole up to 0.200 in. (5.080 mm) long. One burn hole for each segment maximum

      1. Accept

      6. There is a bulkhead segment that has cracks, burns or the two that can possibly cause a piece of segment metal more than 0.500 in. (12.700 mm) long to break off

      1. Reject

      7. Other than Step, Step, Step or Step

      1. Reject

    6. SUBTASK 72-00-42-220-074 Visually Examine the Hood of the Outer Combustion Chamber Assembly at Location 9

    1. Refer to Figure.

      2. Dents that are less than 0.010 in. (0.254 mm) deep

      1. Accept

      3. Cracks or dents that are more than 0.010 in. (0.254 mm) deep

      1. Reject

    7. SUBTASK 72-00-42-220-075 Visually Examine the Fuel Nozzle Guide Deflectors at Location 10

    1. Refer to Figure.

      2. Ceramic coat spalling, chipping or surface burns

      1. Accept

      3. Any length cracks that do not intersect or look like they will intersect

      1. Accept

      4. Burnback of the outside edge diameter of less than 0.150 in. (3.81 mm)

      1. Accept

      5. Other than Step, Step or Step

      1. Reject

    8. SUBTASK 72-00-42-220-076 Visually Examine the Access Cover of the Outer Combustion Chamber Assembly at Location 11

    1. Refer to Figure.

      2. Loose cover or rivets that are gone

      1. Reject

    9. SUBTASK 72-00-42-220-090 Install the Outer Combustion Chamber Liner on the Check and Correct Fixture

    1. Refer to Figure.

    2. Remove the swing arm from the IAE 2P16148 Check and correct fixture 1 off.

    3. Install the combustion chamber outer liner with the front end up in to the fixture. One igniter boss of the combustion chamber must be near the shortest post with one bushing. The other igniter boss must be near the adjacent post with two bushings.

    4. Install the four pins in to the four posts.

    10. SUBTASK 72-00-42-220-091 Examine the Combustion Chamber Outer Liner for the Diameter and the Clearance Envelope of the Bushings at Location 12

    1. NOTE

      Use IAE 2P16192 Plug gage 1 off to examine the diameter and clearance envelope of the bushings.

      Refer to Figure.

      2. Diameter, up to 0.453 in. (11.506 mm)

      1. Accept

      3. Other than Step

      1. Reject

      4. Clearance envelope a minimum of 0.442 in. (11.227 mm)

      1. Accept

      5. Other than Step

      1. Reject

    11. SUBTASK 72-00-42-220-092 Examine the Combustion Chamber Outer Liner for the Length at Location 3

    1. Refer to Figure.

      2. NOTE

        Use IAE 2P16458 Length gage length gage (supersedes IAE 2P16193 Length gage) 1 off to examine the combustion chamber length.

        If the length is between 8.335 and 8.475 in. (211.71 and 215.27 mm)

      1. Accept

      3. Other than Step

      1. Reject

    12. SUBTASK 72-00-42-220-093 Examine the Combustion Chamber Outer Liner for the Out-of-Roundness and the Diameter of the Rear Outside Diameter Seal at Location 5

    1. Refer to Figure.

      2. If the out-of-roundness is not more than 0.120 in. (3.048 mm)

      1. Accept

      3. Other than Step

      1. Reject

      4. If the diameter is not less than 26.100 in. (662.94 mm)

      1. Accept

      5. Other than Step

      1. Reject

    13. SUBTASK 72-00-42-220-094 Examine the Combustion Chamber Outer Liner for the Diameter of the Front Inside Diameter Seal at Location 8

    1. Refer to Figure.

      2. If the diameter is between 16.620 in. and 16.640 in. (422.148 and 422.656 mm)

      1. Accept

      2. Write down the dimension of the diameter and identify as location 2265.

      3. Other than Step

      1. Reject

    14. Figure: Locations at Interface J-42/60

    Locations at Interface J-42/60

    Figure: Install the Combustion Chamber Outer Liner into IAE 2P16148 Fixture

    Install the Combustion Chamber Outer Liner into IAE 2P16148 Fixture

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:0AM53
Tool Number:IAE 2P16148
Tool Name:IAE 2P16148 Check and correct fixture
Manufacturer Code:0AM53
Tool Number:IAE 2P16192
Tool Name:IAE 2P16192 Plug gage
Manufacturer Code:0AM53
Tool Number:IAE 2P16193
Tool Name:IAE 2P16193 Length gage
Manufacturer Code:0AM53
Tool Number:IAE 2P16458
Tool Name:IAE 2P16458 Length gage