TASK 72-50-42-200-005 No. 5 Bearing Seal Front Spacer - Examine, Inspection-005

DMC:V2500-A0-72-50-4203-01A-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 72-50-42-200-005 No. 5 Bearing Seal Front Spacer - Examine, Inspection-005

Effectivity

FIG/ITEM PART NO.

01-144

4T8037

General

This TASK gives the procedure for the inspection of the No. 5 bearing front seal spacer. For other parts of the No. 5 bearing assembly and seal, refer to TASK 72-50-42-200-000 (INSPECTION/CHECK-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 the TASK 72-50-42-100-000 (CLEANING-000).

All parts must be cleaned before any part is examined. Refer to the SPM TASK 70-10-00-100-501.

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

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 72-50-42-230-052-001 Examine the No. 5 Bearing Front Seal Spacer (01-144) for Cracks

    1. Clean the part. Refer to TASK 72-50-42-100-000 (CLEANING-000).

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

        PART IDENT TASK/SUBTASK

        No. 5 bearing front seal spacer

        1. Cracked

        1. Reject

    2. SUBTASK 72-50-42-230-052-002 Examine the No. 5 Bearing Front Seal Spacer (01-144) for Cracks

    1. Clean the part. Refer to TASK 72-50-42-100-000 (CLEANING-000).

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

        PART IDENT TASK/SUBTASK

        No. 5 bearing front seal spacer

        1. Cracked

        1. Reject

    3. SUBTASK 72-50-42-220-067 Examine the No. 5 Bearing Front Seal Spacer (01-144) for Scratches, Nicks, Chips and Pits

    1. Refer to Figure.

      2. Examine the seal spacer on all surfaces for scratches and nicks.

        1. Any amount with no high metal

        1. Accept

        2. Other than (1)

        1. Repair, VRS5643 TASK 72-50-42-300-026 (REPAIR-026)**

      3. Examine the hardcoated surface of the seal spacer at location 1 for chips and pits.

        1. Chips on the inner and outer edges.

          1. There is a maximum of 10 chips. Chips have a maximum dimension of 0.020 in. (0.51 mm) in any direction and are a minimum of 0.125 in. (3.18 mm) apart

          1. Accept

          2. Other than (a)

          1. Repair, VRS5617 TASK 72-50-42-300-025 (REPAIR-025)

        2. Pits.

          1. There is a maximum of six pits. Three pits have a maximum dimension of 0.010 in. (0.25 mm) and are a minimum of 0.125 in. (3.18 mm) from another pit

          1. Accept

          2. There is a maximum of six pits. One pit has a maximum dimension of 0.030 in. (0.76 mm) and is a minimum of 1.00 in. (25.4 mm) from another pit

          1. Accept

          3. Other than (a) or (b)

          1. Repair, VRS5617 TASK 72-50-42-300-025 (REPAIR-025)

    4. SUBTASK 72-50-42-220-068 Examine the No. 5 Bearing Front Seal Spacer (01-144) for Parallelism, Flatness, Surface Finish and Axial Length of the Rubbing Surface

    1. Refer to Figure.

      2. Examine the rubbing surface of the seal spacer at location 1 for parallelism, flatness, surface finish and axial length.

        1. Parallelism.

          1. The rubbing surface is parallel with surface B in 0.0005 in. (0.013 mm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS5617 TASK 72-50-42-300-025 (REPAIR-025)

        2. Flatness.

          1. The rubbing surface is flat in 0.00004 in. (0.001 mm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS5617 TASK 72-50-42-300-025 (REPAIR-025)

        3. Surface finish.

          1. If the surface finish is in the limits given in the figure

          1. Accept

          2. Other than (a)

          1. Repair, VRS5617 TASK 72-50-42-300-025 (REPAIR-025)

        4. Axial length at location 2.

          1. If the axial length is 0.756 to 0.758 in. (19.20 to 19.25 mm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS5617 TASK 72-50-42-300-025 (REPAIR-025)

    5. SUBTASK 72-50-42-220-070 Examine the No. 5 Bearing Front Seal Spacer (01-144) for Parallelism, Flatness and Surface Finish of the Mating Surface

    1. Refer to: Figure

      NOTE

      The following conditions apply between the edge of the ID chamfer and a diameter of 5.151 to 5.153in (130.85 to 130.90 mm).

      2. Examine the mating surface of the seal spacer at location 3 for parallelism, flatness and surface finish.

        1. Parallelism.

          1. The mating surface is parallel with Surface C in 0.0005in. (0.013 mm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS5644 TASK 72-50-42-300-027 (REPAIR-027)**

        2. Perpendicularity.

          1. The mating surface is perpendicular in 0.0005in. (0.013 mm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS5644 TASK 72-50-42-300-027 (REPAIR-027)**

        3. Surface finish.

          1. If the surface finish is in the limits given in the figure

          1. Accept

          2. Other than (a)

          1. Repair, VRS5644 TASK 72-50-42-300-027 (REPAIR-027)**

    6. SUBTASK 72-50-42-220-071 Examine the No. 5 Bearing Front Seal Spacer (01-144) Outside Diameter for the Diameter and Concentricity

    1. Refer to: Figure

      2. Examine the seal spacer outside diameter at location 4 for the diameter and concentricity.

        1. If the outside diameter is 5.152 to 5.154in. (130.861 to 130.911 mm)

        1. Accept

        2. If the outside diameter is concentric with the inside diameter at location 2 in 0.001in. (0.025 mm)

        1. Accept

        3. Other than (1) and (2)

        1. Repair, VRS5645 TASK 72-50-42-300-028 (REPAIR-028)**

    7. Figure: No. 5 Bearing Front Seal Spacer Inspection Locations

    No. 5 Bearing Front Seal Spacer Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE