TASK 72-32-21-200-003-B00 No. 3 Bearing Housing - Examine, Inspection-003

DMC:V2500-A0-72-32-2101-00B-300A-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 72-32-21-200-003-B00 No. 3 Bearing Housing - Examine, Inspection-003

Effectivity

FIG/ITEM

PART NO.

01-020

2A1208

General

This TASK gives the procedure for the inspection of the No. 3 bearing housing assembly. For the other parts of the No. 3 bearing housing, refer to TASK 72-32-21-200-000 (INSPECTION-000).

Fig/item numbers in parentheses in the procedure agree with those used in the IPC.

The policy that is necessary for inspection is given in the SPM TASK 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to TASK 72-32-21-100-000 (CLEANING-000).

All parts must be visually examined for damage, corrosion and wear. Any defects that are not identified in the procedure must be referred to IAE.

The procedure for those parts which must have a crack test is given in SUBTASK 72-32-21-230-052. Do the test before the part is visually examined.

A ** following repair referenced in this inspection indicates that the repair is not yet published in the current revision of the manual and the part must be rejected. Contact IAE for additional information concerning FAA approved repair date.

Do not discard any part until you are sure there are no repairs available. Refer to the instructions in Repair before a discarded part is used again or oversize parts are installed.

Parts which should be discarded can be held although no repair is available. The repair of a discarded part could be shown to be necessary at a later date.

All parts must be examined to make sure that all the repairs have been completed satisfactorily.

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

References

Refer to the SPM for data on these items.

Definitions of Damage, SPM TASK 70-02-02-350-501

Inspection of Parts, SPM TASK 70-20-00-200-501

Surface Texture, SPM TASK 70-35-09-350-501

Some data on these items is contained in this TASK. For more data on these items refer to the SPM.

Method of Testing for Crack Indications

Chemical Processes

Surface Protection

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-21-230-054-001 Examine the No. 3 Bearing Housing Assembly (01-020) for Cracks

    1. Clean the Part. Refer to the TASK 72-32-21-100-000 (CLEANING-000).

      2. Do the test for cracks on the part that is given below. Use the applicable penetrant procedure.

        PART IDENT

        TASK/SUBTASK

        No. 3 bearing housing assembly

        (Dip or Spray)

        1. Cracked

        1. Reject

    2. SUBTASK 72-32-21-230-054-002 Examine the No. 3 Bearing Housing Assembly (01-020) for Cracks

    1. Clean the Part. Refer to the TASK 72-32-21-100-000 (CLEANING-000).

      2. Do the test for cracks on the part that is given below. Use the applicable penetrant procedure.

        PART IDENT

        TASK/SUBTASK

        No. 3 bearing housing assembly

        (Dip or Spray)

        1. Cracked

        1. Reject

    3. SUBTASK 72-32-21-220-071 Examine the No. 3 Bearing Housing Assembly (01-020) for Wear, Scores and Surface Damage on all the Surfaces

    1. Refer to Figure.

      2. Examine the bearing housing assembly for wear, scores and surface damage on all the surfaces. Look carefully at the surfaces adjacent to the threaded holes at location 9 and the inner and outer diameters.

        1. Wear (surface damage) at location 6 up to 0.240 in. (6.096 mm) axially, 0.450 in. (11.430 mm) circumferentially and 0.020 in. (0.508 mm) in depth. One location is permitted.

        1. Accept

        2. Worn, scored or surface damage other than (1)

        1. Repair, VRS3369 TASK 72-32-21-300-011 (REPAIR-011)**

    4. SUBTASK 72-32-21-220-072 Examine the No. 3 Bearing Housing Assembly (01-020) for Loose Seal Ring Groove Pins

    1. Refer to Figure.

      2. Examine the bearing housing assembly at location 5 for loose seal ring groove pins (two positions).

        1. Loose pins

        1. Repair, VRS3367 TASK 72-32-21-300-009 (REPAIR-009)

    5. SUBTASK 72-32-21-220-073 Examine the No. 3 Bearing Housing Assembly (01-020) for Wear on the Seal Ring Groove Pins

    1. Refer to Figure.

      2. Examine the seal ring groove pins at location 5 for wear and pin width (two positions).

        1. Wear.

          1. Up to 0.010 in. (0.254 mm) and the wear must be smooth and equal with no high metal

          1. Accept

          2. Other than Step

          1. Repair, VRS3367 TASK 72-32-21-300-009 (REPAIR-009)

        2. Pin width.

          1. Width is a minimum of 0.110 in. (2.79 mm)

          1. Accept

          2. Other than Step

          1. Repair, VRS3367 TASK 72-32-21-300-009 (REPAIR-009)

    6. SUBTASK 72-32-21-220-074 Examine the No. 3 Bearing Housing Assembly (01-020) for Cracks, Voids and Surface Damage on the Nickel Plate of the Seal Ring Grooves

    1. Refer to Figure.

      2. Examine the bearing housing assembly at location 2 for cracks, voids and surface damage on the nickel plate of the seal ring grooves (two locations).

        1. Cracks, voids or surface damage. No plate is permitted at location 1

        1. Repair, VRS3368 TASK 72-32-21-300-010 (REPAIR-010)**

    7. SUBTASK 72-32-21-220-075 Examine the No. 3 Bearing Housing Assembly (01-020) Holes Diameter

    1. Refer to Figure.

      2. Examine the bearing housing assembly holes at location 9 (18 locations).

        1. Diameters.

          1. If the dimensions are between 0.2785 and 0.2795 in. (7.074 and 7.099 mm) for Location 9 distance of 0.130 to 0.150 in (3.30 to 3.81 mm)

          1. Accept

          2. Other than Step

          1. Reject

    8. SUBTASK 72-32-21-220-076 Examine the No. 3 Bearing Housing Assembly (01-020) for the Diameters

    1. Refer to Figure.

      2. Examine the bearing housing assembly at locations 3 and 8 for the front and rear stop diameters.

        1. Diameters.

          1. If the dimension is between 10.775 and 10.779 in. (273.685 and 273.786 mm)

          1. Accept

          2. Other than Step

          1. Reject

      3. Examine the bearing housing assembly at location 2407 for the inner diameter.

        1. Diameter.

          1. If the dimension is between 8.8379 and 8.8389 in. (224.483 and 224.508 mm)

          1. Accept

          2. Other than Step

          1. Repair, VRS3672 TASK 72-32-21-300-014 (REPAIR-014)

    9. SUBTASK 72-32-21-220-077 Examine the No. 3 Bearing Housing Assembly (01-020) for the Width of the Two Seal Ring Grooves

    1. Refer to Figure.

      2. Examine the bearing housing assembly at location 2401 for the width of the two seal ring grooves.

        1. Width.

          1. If the dimension is between 0.152 and 0.155 in. (3.861 and 3.937 mm)

          1. Accept

          2. Other than Step

          1. Repair, VRS3007 TASK 72-32-21-220-005 (REPAIR-005)

    10. SUBTASK 72-32-21-220-078 Examine the No. 3 Bearing Housing Assembly (01-020) for the Surface Finish

    1. Refer to Figure.

      2. Examine the bearing housing assembly at locations 4 and 7 for the surface finish.

        1. The surface finish limit must be as given in the figure

        1. Accept

        2. Other than Step

        1. Repair, VRS3007 TASK 72-32-21-300-005 (REPAIR-005)

    11. Figure: No. 3 bearing housing assembly inspection locations

    No. 3 bearing housing assembly inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE