TASK 72-43-20-200-001 No. 4 Bearing Seal Ring Holder - Examine, Inspection-001

DMC:V2500-A0-72-43-2001-00A-310A-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 72-43-20-200-001 No. 4 Bearing Seal Ring Holder - Examine, Inspection-001

Effectivity

FIG/ITEM PART NO.

01-060

2A0847

01-060

2A3543

General

This TASK gives the procedure for the inspection of the No. 4 bearing seal ring holder.

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 SPM TASK 70-10-00-100-501.

This procedure for those parts which must have a crack test is given in SUBTASK 72-43-20-230-051. Do the test before the part is visually examined.

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 70-20-01-200-501

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

NameManufacturerPart Number / IdentificationQuantityRemark
StylusLOCALStylus

0.032 in. (0.813 mm) diameter ball tip

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-43-20-230-051-001 Examine the No. 4 Bearing Seal Ring Holder (01-060) for Cracks

    1. Clean the part. Refer to TASK 72-43-20-100-000 (CLEANING-000).

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

        PART IDENT

        TASK/SUBTASK

        No. 4 bearing seal ring holder

        SPM TASK 70-23-01-230-501 (Dip or spray)

        1. Cracked

        1. Reject

    2. SUBTASK 72-43-20-230-051-002 Examine the No. 4 Bearing Seal Ring Holder (01-060) for Cracks

    1. Clean the part. Refer to TASK 72-43-20-100-000 (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. 4 bearing seal ring holder

        SPM TASK 70-23-02-230-501 (Dip or spray)

        1. Cracked

        1. Reject

    3. SUBTASK 72-43-20-220-058 Examine the No. 4 Bearing Seal Ring Holder (01-060) for Damage on the Outer Flange Threads

    1. Refer to: Figure

      2. Examine the seal ring holder at location 1 for damage on the outer flange threads (seven locations).

        1. Damage

        1. Repair, VRS3122 TASK 72-43-20-300-005 (REPAIR-005)

    4. SUBTASK 72-43-20-220-059 Examine the No. 4 Bearing Seal Ring Holder (01-060) for Bent, Loose, or Carbon Build-Up on the No. 4 Bearing Seal Pins

    1. Refer to: Figure

      2. Examine the seal ring holder at location 3 for bent, loose or carbon build-up on the pins (four locations).

        1. Bent, loose or carbon build-up

        1. Repair, VRS3110 TASK 72-43-20-300-001 (REPAIR-001)

    5. SUBTASK 72-43-20-220-060 Examine the No. 4 Bearing Seal Ring Holder (01-060) for Wear on Each Side of the Seal Ring Groove

    1. Refer to: Figure

      2. Examine the seal ring holder at locations 6 and 7 for wear on each side of the groove.

        1. Wear.

          1. Light and equal wear when it does not change the surface finish requirement

          1. Accept

          2. Other than (a)

          1. Repair, VRS3118 TASK 72-43-20-300-003 (REPAIR-003)

    6. SUBTASK 72-43-20-220-061 Examine the No. 4 Bearing Seal Ring Holder (01-060) for the Width of the Seal Ring Groove

    1. Refer to: Figure

      2. Examine the seal ring holder at location 2 for the width of the groove.

        1. Width.

          1. If the width is between 0.124 and 0.127 in. (3.150 and 3.225 mm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS3118 TASK 72-43-20-300-003 (REPAIR-003)

    7. SUBTASK 72-43-20-220-062 Examine the No. 4 Bearing Seal Ring Holder (01-060) for the Surface Finish and the Parallelism of the Seal Ring Groove Rear Face

    1. Refer to: Figure

      2. Examine the seal ring holder at location 6 between locations 5 and 8 for the surface finish of the seal ring rear face. Refer to the SPM TASK 70-35-09-350-501.

        1. Surface finish of the groove over the surface covered by the 0.090in. (2.286 mm) dimension.

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

          1. Accept

          2. Other than (a)

          1. Repair, VRS3118 TASK 72-43-20-300-003 (REPAIR-003)

      3. Examine the seal ring holder for the parallelism of the seal ring groove rear face at location 6 to be parallel with the face at location 4.

        1. Parallelism of the groove at the 0.090in. (2.286 mm) dimension.

          1. If the parallelism is 0.002in. (0.051 mm) or less

          1. Accept

          2. Other than (a)

          1. Repair, VRS3118 TASK 72-43-20-300-003 (REPAIR-003)

    8. SUBTASK 72-43-20-220-063 Examine the No. 4 Bearing Seal Ring Holder (01-060) for the Inner Diameters

    1. Refer to: Figure.

      NOTE

      If the measured diameter in a free condition is not satisfactory, a held condition is permitted. All dimensions apply when Surface Y is flat by 0.002 in. (0.051 mm) and Diameters AA and U maintain a clearance envelope of 10.887 in. (276.53 mm) and 6.050 in. (153.67 mm) respectively in a free or held condition. Hold the seal ring holder only on surfaces Y and V and Diameters AA and U.

      2. Examine the seal ring holder at location 2235 for the front flange inner diameter.

        1. Front flange inner diameter.

          1. If the dimension is between 10.880 and 10.900 in. (276.35 and 276.86 mm) in a free condition or 10.888 and 10.892 in. (276.556 and 276.656 mm) in a held condition

          1. Accept

          2. Other than (a)

          1. Repair, VRS3795 TASK 72-43-20-300-019 (REPAIR-019)

      3. Examine the seal ring holder at location 2240 for the rear inner diameter.

        1. Rear inner diameter.

          1. If the dimension is between 6.043 and 6.063 in. (153.49 and 154 mm) in a free condition or 6.051 and 6.055 in. (153.70 and 153.80 mm) in a held condition

          1. Accept

          2. Other than (a)

          1. Repair, VRS3797 TASK 72-43-20-300-018 (REPAIR-018)

    9. SUBTASK 72-43-20-220-064 Examine the No. 4 Bearing Seal Support Assembly (01-060) for the Diameter

    1. Refer to: Figure.

      2. Examine the seal support assembly at location 5 for the piston ring groove land.

        1. Diameter.

          1. If the dimension is between 6.529 and 6.531 in. (165.84 and 165.89 mm), measured at 6 equally spaced locations, in true position as shown in the figure, and has VRS3629

          1. Accept

          2. Other than (a)

          1. Repair, VRS3629 TASK 72-43-20-300-012 (REPAIR-012) or Repair, VRS3662 TASK 72-43-20-300-014 (REPAIR-014)

    10. SUBTASK 72-43-20-220-087 Examine the No. 4 Bearing (Rear) Seal Ring Holder (01-060) for Damage

    1. Refer to: Figure

      2. Use a stylus with a 0.032 in. (0.813 mm) diameter ball tip to examine the seal ring holder for burrs, nicks, dents and scratches.

        1. Stylus passes over damaged areas without hesitation.

        1. Accept.

        2. Stylus hesitates on the areas with damage.

        1. Repair, VRS3667 TASK 72-43-20-300-015 (REPAIR-015).

    11. Figure: No. 4 Bearing Seal Ring Holder Inspection Locations

    No. 4 Bearing Seal Ring Holder Inspection Locations

    Figure: No. 4 Bearing Seal Ring Holder Inspection

    No. 4 Bearing Seal Ring Holder Inspection

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Stylus
Tool Name:Stylus