TASK 72-60-28-200-007-A00 Generator Drive Gear Carbon Seal - Examine, Inspection-007

DMC:V2500-A0-72-60-2806-00A-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 72-60-28-200-007-A00 Generator Drive Gear Carbon Seal - Examine, Inspection-007

Effectivity

FIG/ITEM

PART NO.

01-310

7T0476

General

This TASK gives the procedure for the inspection of the carbon seal.

For other parts of the IDG Drive Gear Assembly refer to TASK 72-60-28-200-000 (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 the SPM TASK 70-10-00-100-501.

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.

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

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

Reference

Refer to the SPM for data on these items.

Definition of Damage, TASK 70-02-02-350-501

Record and Control of the Lives of the Parts, TASK 70-05-00-220-501.

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.

Surface protection

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

CAUTION

HANDLE THE PART CAREFULLY. CARBON DETAIL IS FRAGILE.

Procedure

    1. SUBTASK 72-60-28-220-152 Examine the Carbon Seal (01-310) Nose at Location 1

    1. Refer to Figure.

      2. Cracks.

        1. Evident cracks

        1. Reject

      3. Nicks and scratches.

        1. Not detectable with a 0.015 to 0.020 in. (0.381 to 0.508 mm) radius style

        1. Accept

        2. More than Step

        1. Reject

      4. Chipped edges.

        1. No greater than 25 percent of original sealing surface width and 25 percent of seal face circumference, no longer than 0.20in. (5.08 mm)

        1. Accept

        2. More than Step

        1. Reject

    2. SUBTASK 72-60-28-220-153 Examine the Carbon Seal (01-310) Face at Location 2

    1. Refer to Figure.

      2. Cracks.

        1. Evident cracks

        1. Reject

      3. Nicks and scratches.

        1. Not detectable with a 0.015 to 0.020 in. (0.381 to 0.508 mm) radius style

        1. Accept

        2. More than Step

        1. Reject

      4. Chipped edges.

        1. No greater than 25 percent of original sealing surface width and 25 percent of seal face circumference, no longer than 0.20in. (5.08 mm)

        1. Accept

        2. More than Step

        1. Reject

      5. Freedom of movement.

      1. No sticking of details is permitted.

      6. Flatness.

        1. Flat within 3 helium light bands

        1. Accept

        2. More than Step

        1. Reject

      7. Free length.

        1. Less than 0.716 in. (18.20 mm)

        1. Reject

    3. SUBTASK 72-60-28-220-154 Examine the Carbon Seal (01-310) Outer Diameter at Location 3

    1. Refer to Figure.

      2. Diameter.

        1. Between 2.878 and 2.876 in. (73.101 and 73.050 mm)

        1. Accept

        2. Less than 2.876 in. (73.050 mm)

        1. Reject

    4. Figure: Locations - Carbon Seal

    Locations - Carbon Seal

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment