TASK 72-50-42-200-003-B00 No. 5 Bearing Seal Front Spacer - Examine, Inspection-003

DMC:V2500-A0-72-50-4203-00B-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 72-50-42-200-003-B00 No. 5 Bearing Seal Front Spacer - Examine, Inspection-003

Effectivity

FIG/ITEM PART NO.

20-160

2A2919

General

This TASK gives the procedure for the inspection of the No. 5 bearing 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.

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, TASK 70-02-02-350-501

Inspection of Parts, 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 72-50-42-230-053-001 Examine the No. 5 Bearing Seal Spacer (20-160) 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 seal spacer

        1. Cracked

        1. Reject

    2. SUBTASK 72-50-42-230-053-002 Examine the No. 5 Bearing Seal Spacer (20-160) 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 seal spacer

        1. Cracked

        1. Reject

    3. SUBTASK 72-50-42-220-076 Examine the No. 5 Bearing Seal Spacer (20-160) 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, VRS3244 TASK 72-50-42-300-014 (REPAIR-014)

    4. SUBTASK 72-50-42-220-077 Examine the No. 5 Bearing Seal Spacer (20-160) for Thickness, Flatness and Surface Finish of the Rubbing Surface on Both Sides

    1. Refer to: Figure

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

        1. Thickness.

          1. The thickness is 0.195 to 0.201in. (4.953 to 5.105 mm) and is the same in 0.0005in. (0.013 mm) total through 360 degrees

          1. Accept

          2. Other than (a)

          1. Reject

        2. Flatness.

          1. The rubbing surfaces are flat in 0.00004in. (0.001 mm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS3205 TASK 72-50-42-300-015 (REPAIR-015)

        3. Surface finish.

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

          1. Accept

          2. Other than (a)

          1. Repair, VRS3205 TASK 72-50-42-300-015 (REPAIR-015)

    5. SUBTASK 72-50-42-220-078 Examine the No. 5 Bearing Seal Spacer (20-160) Inside Diameter for the Diameter and Perphendicularity

    1. Refer to: Figure

      2. Examine the seal spacer inside diameter at location 2 for the inside diameter.

        1. If the inside diameter is 3.744 to 3.745in. (95.098 to 95.123 mm)

        1. Accept

        2. Other than (1)

        1. Repair, VRS3168 TASK 72-50-42-300-016 (REPAIR-016)

    6. SUBTASK 72-50-42-220-079 Examine the No. 5 Bearing Seal Spacer (20-160) 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, VRS3167 TASK 72-50-42-300-017 (REPAIR-017)

    7. Figure: No. 5 bearing seal spacer inspection locations

    No. 5 bearing seal spacer inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE