TASK 72-60-33-200-002 PMA Rotor Shaft - Examine, Inspection-002

DMC:V2500-A0-72-60-3301-00A-300A-C|Issue No:002.00|Issue Date:2018-02-01

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 72-60-33-200-002 PMA Rotor Shaft - Examine, Inspection-002

Effectivity

FIG/ITEM

PART NO.

01-180

4B0254

General

This TASK gives the procedure for the inspection of the PMA shaft and rotor. For the other parts of the PMA drive gear assembly, refer to TASK 72-60-33-200-000.

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 70-20-01-200-501.

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 defect 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 the SPM TASK 70-23-00-230-501. Do the test before the part is visually examined. Limits for cracks are given in the SUBTASK for each part.

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 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.

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

Inspection of Parts, TASK 70-20-20-200-501.

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

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

CAUTION

THE REPAIR LISTED IN THIS INSPECTION CAN BE CARRIED OUT ONLY AFTER THE REMOVAL OF THE PMA ROTOR. REFER TO THE REPAIR VRS5327 TASK 72-60-33-300-020 FOR THE REMOVAL OF THE ROTOR FROM THE SHAFT.

Procedure

    1. SUBTASK 72-60-33-220-055 Examine the PMA Shaft and Rotor (01-180) Gear Teeth at Location 1

    1. Refer to Figure.

      2. Nicks on the tip of tooth.

        1. Three for each tooth 0.032 in. (0.813 mm) long, 0.008 in. (0.20 mm) in depth, extended less than 0.016 in. (0.40 mm) onto face of tooth. The distance between nicks must be equal to, or larger than the length of the longest nick

        1. Accept

        2. More than in Step

        1. Repair, VRS5177 TASK 72-60-33-300-004

      3. Damage on the engagement surface.

        1. Superficial damage

        1. Repair. VRS5177 TASK 72-60-33-300-004

      4. Chips, flakes or fretting

      1. Reject

      5. Wear of teeth.

        1. Measure the dimension over the diametrically opposite 0.080 in. (2.032 mm) diameter pins.

          1. Between 0.7039 in. and 0.7021 in. (17.880 mm and 17.833 mm).

          1. Accept.

          2. Less than 0.7021 in. (17.833 mm).

          1. Reject.

    2. SUBTASK 72-60-33-220-056 Examine the PMA Shaft and Rotor (01-180) Rear and Front Bearing Journals at Location 4058 and 4060

    1. Refer to Figure.

      2. Damage on the surface.

        1. Scratches not more than 0.008 in. (0.20 mm) in depth

        1. Repair, VRS5177 TASK 72-60-33-300-004

        2. Scratches more than 0.008 in. (0.20 mm) in depth

        1. Reject

    3. SUBTASK 72-60-33-220-057 Examine the PMA Shaft and Rotor (01-180) Rear Bearing Journal at Location 4058

    1. Refer to Figure.

      2. Diameter.

        1. Between 0.9456 and 0.9452 in. (24.018 and 24.008 mm)

        1. Accept

        2. Less than 0.9452 in. (24.008 mm)

        1. Reject

      3. Concentricity.

        1. In 0.0004 in. (0.010 mm) in relation to surfaces A and B

        1. Accept

        2. More than Step

        1. Reject

    4. SUBTASK 72-60-33-220-058 Examine the PMA Shaft and Rotor (01-180) Front Bearing Journal at Location 4060

    1. Refer to Figure.

      2. Diameter.

        1. Between 0.9456 and 0.9452 in. (24.018 and 24.008 mm)

        1. Accept

        2. Less than 0.9452 in. (24.008 mm)

        1. Reject

      3. Concentricity.

        1. In 0.0004 in. (0.010 mm) in relation to surfaces A and B

        1. Accept

        2. More than in Step

        1. Reject

    5. SUBTASK 72-60-29-220-060 Examine the PMA Shaft and Rotor (01-180) Front Bearing Shoulder at Location 2

    1. Refer to Figure.

      2. Runout.

        1. In 0.0006 in. (0.015 mm) in relation to Surfaces A and B

        1. Accept

        2. More than Step

        1. Reject

    6. SUBTASK 72-60-33-220-061 Examine the PMA Shaft and Rotor (01-180) Drive Gear Mating Diameter at Location 4061

    1. Refer to Figure.

      2. Diameter.

        1. Between 0.4724 and 0.4720 in. (12.000 and 11.989 mm)

        1. Accept

        2. Less than 0.4720 in. (11.989 mm)

        1. Reject

      3. Concentricity.

        1. In 0.0006 in. (0.015 mm) in relation to surfaces A and B

        1. Accept

        2. More than Step

        1. Reject

    7. SUBTASK 72-60-33-220-098 Examine the PMA Shaft and Rotor (01-180) Rotor Surface at Location 3

    1. Refer to Figure.

      2. Scores.

        1. Circumferential scores.

          1. If more than 0.013 in. (0.330 mm) in depth

          1. Reject

        2. Axial scores.

          1. If more than 0.003 in. (0.080 mm) in depth

          1. Reject

      3. Discoloration.

        1. Evident blue discolouration

        1. Reject

    8. Figure: Locations - PMA shaft and rotor

    Locations - PMA shaft and rotor

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure to correct PMA shaft and rotor gear teeth dimension. (17VC177)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Demagnetizing unit
Tool Name:Demagnetizing unit
Manufacturer Code:LOCAL
Tool Number:Magnetizing unit
Tool Name:Magnetizing unit
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment