TASK 72-60-42-200-006 Angle Gearbox Radial Gearshaft Coupling - Examine, Inspection-006

DMC:V2500-A0-72-60-4203-00A-300A-C|Issue No:002.00|Issue Date:2015-11-01

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 72-60-42-200-006 Angle Gearbox Radial Gearshaft Coupling - Examine, Inspection-006

Effectivity

FIG/ITEM PART NO.

01-210

4P0198

General

This TASK gives the procedure for the inspection of the coupling. For the other parts of the angle gearbox driving bevel gear assembly, refer to TASK 72-60-42-200-000 (INSPECTION-000).

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variants refer to the IPC. The policy that is necessary for inspection is given in the SPM TASK 70-20-01-200-501.

All the parts must be cleaned before any part is examined. Refer to the SPM TASK 70-11-03-300-503.

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 Step. Do the test before the part is visually examined.

A ** following a 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 the 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 for damage, corrosion and wear. Any defects that are not identified in the procedure must be referred to IAE.

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

References

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.

Method of Testing for Crack Indications

Chemical Processes

Surface protection

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Workshop inspection equipmentLOCALWorkshop inspection equipment
Magnetizing unitLOCALMagnetizing unit
Demagnetizing unitLOCALDemagnetizing unit
Hardness testerLOCALHardness tester

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-42-240-058 Examine the Coupling (01-210) for Cracks (Magnetic)

    1. Clean the parts. Refer to TASK 72-60-42-100-000 (CLEANING-000).

      2. Do the test for cracks on the parts that are given below. Use the applicable magnetic procedure.

        PART IDENT

        PROCEDURE

        CURRENT/INSPECT

        TASK/SUBTASK

        Coupling

        TB

        700 A

        SPM TASK 70-24-01-240-501, SUBTASK 70-24-01-240-011

        Coil

        7000 A/T

        SPM TASK 70-24-01-240-501, SUBTASK 70-24-01-240-014

        1. Cracked

        1. Reject

    2. SUBTASK 72-60-42-220-059 Examine the Coupling (01-210) Gear Teeth at Locations 1, 2 and 3

    1. Refer to Figure.

      2. Nicked on the tip of tooth.

        1. Three for each tooth 0.032 in. (0.80 mm) long, 0.008 in. (0.20 mm) in depth, extended less than 0.016 in. (0.40 mm) onto the face of the tooth. The distance between the nicks must be equal to, or larger than, the length of the longest nick

        1. Accept

        2. More than Step

        1. Reject

      3. Damaged on the surface of ingage.

        1. Superficial damages

        1. Reject

        2. Chipped, flaked or fretted

        1. Reject

      4. Worn.

        1. Measure the dimension over two diametrically opposite 0.1181 in. (3.00 mm) diameter pins:

          1. Between 1.8654 and 1.8588 in. (47.381 and 47.214 mm)

          1. Accept

          2. Less than 1.8588 in. (47.214 mm)

          1. Reject

      5. Hardness.

        1. Measure the hardness of the teeth area at Location 2.

          1. Less than 56 HRC measured at different locations

          1. Reject

        2. Measure the core hardness of coupling at Location 3.

          1. Less than 30 HRC measured at different locations

          1. Reject

    3. SUBTASK 72-60-42-220-060 Examine the Coupling (01-210) Spline at Location 4

    1. Refer to Figure.

      2. Spline teeth.

        1. Superficial damages

        1. Reject

        2. Chipped, flaked or fretted

        1. Reject

      3. Worn.

        1. Measure the dimension between two diametrically opposite 0.072 in. (1.829 mm) diameter pins:

          1. Between 1.0652 and 1.0696 in. (27.056 and 27.167 mm)

          1. Accept

          2. More than 1.0696 in. (27.167 mm)

          1. Reject

    4. Figure: Locations - coupling

    Locations - coupling

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Deleted repair reference for VRS5654. (15VC584)

Change Type:

Reformatted table. (editorial)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Demagnetizing unit
Tool Name:Demagnetizing unit
Link not Found
Manufacturer Code:LOCAL
Tool Number:Magnetizing unit
Tool Name:Magnetizing unit
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment