TASK 72-60-42-200-003 Angle Gearbox Driving Bevel Radial Gearshaft - Examine, Inspection-003

DMC:V2500-A0-72-60-4201-00A-300A-C|Issue No:002.00|Issue Date:2019-05-01

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 72-60-42-200-003 Angle Gearbox Driving Bevel Radial Gearshaft - Examine, Inspection-003

Effectivity

FIG/ITEM PART NO.

01-400

4B0196

General

This TASK gives the procedure for the inspection of the bevel radial gearshaft. For the other parts of the angle gearbox driving 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.

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 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 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,

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

Inspection of Parts, SPM 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 equipmentLOCAL
Magnetizing unitLOCAL
Demagnetizing unitLOCAL
Hardness TesterLOCAL

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-42-240-051 Do a Crack Test on the Bevel Radial Gearshaft (01-400) (Magnetic)

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

      2. Do the test for cracks on the parts that are given below.

        PART IDENT

        PROCEDURE

        CURRENT/INSPECT

        TASK/SUBTASK

        Bevel radial

        TB

        800 amps

        gearshaft

        SUBTASK 70-24-01-240-011

        TB

        1600 amps

        SUBTASK 70-24-01-240-011

        Coil

        7000 A/T

        SUBTASK 70-24-01-240-014

        1. Cracked

        1. Reject

    2. SUBTASK 72-60-42-220-068 Examine the Bevel Radial Gearshaft (01-400) Gear Teeth, Location 1

    1. Refer to Figure.

      2. Nicks 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 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 Step.

        1. Repair VRS5193, TASK 72-60-42-300-002 (REPAIR-002)

      3. Damage on the contact surface.

        1. Superficial damages

        1. Repair VRS5193, TASK 72-60-42-300-002 (REPAIR-002)

      4. Chips, flakes or fretting

      1. Reject

      5. NOTE

        Do this check only if overheating or some other condition makes it necessary. A blue discoloration of the part is an indication of overheating.

        Hardness of teeth.

        1. Measure the hardness of teeth area at location 5.

          1. Less than 56 HRC measured at different locations.

          1. Reject

        2. Measure the hardness of gear area adjacent to teeth at location 6.

          1. Less than 30 HRC measured at different locations.

          1. Reject

    3. SUBTASK 72-60-42-220-069 Examine the Bevel Radial Gearshaft (01-400) Spline, Location 2

    1. Refer to Figure.

      2. Spline teeth.

        1. Superficial damages

        1. Repair VRS5193, TASK 72-60-42-300-002 (REPAIR-002)

      3. Chips, flakes or fretting.

      1. Reject

      4. Wear of teeth.

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

          1. Between 1.5750 and 1.5794 in. (40.01 and 40.12 mm)

          1. Accept

          2. More than 1.5814 in. (40.16 mm)

          1. Reject

    4. SUBTASK 72-60-42-220-070 Examine the Bevel Radial Gearshaft (01-400) Bearing Journals, Location 4073, 4074 and 4076

    1. Refer to Figure.

      2. Damage on the surface.

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

        1. Repair VRS5193, TASK 72-60-42-300-002 (REPAIR-002)

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

        1. Repair VRS5195, TASK 72-60-42-300-014 (REPAIR-014) Repair VRS5196, TASK 72-60-42-300-015 (REPAIR-015) Repair VRS5197, TASK 72-60-42-300-016 (REPAIR-016)

    5. SUBTASK 72-60-42-220-101 Examine the Bevel Radial Gearshaft (01-400) Gear area, Location 6

    1. Refer to Figure.

      2. Damage on the surface.

        1. Nicks not more than 0.008 in. (0.20 mm) in depth if the damage is not on the edges

        1. Repair VRS5193, TASK 72-60-42-300-002 (REPAIR-002)

        2. Nicks not more than 0.004 in. (0.10 mm) in depth if the damage is on the edges.

        1. Repair VRS5193, TASK 72-60-42-300-002 (REPAIR-002)

        3. Nicks more than 0.008 in. (0.20 mm) in depth if the damage is not on the edges.

        1. Reject.

        4. Nicks more than 0.004 in. (0.10 mm) in depth if the damage is on the edges.

        1. Reject.

    6. SUBTASK 72-60-42-220-102 Examine the Bevel Radial Gearshaft (01-400) Gearshaft surface, Location 7

    1. Refer to Figure.

      2. Damage on the surface.

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

        1. Repair VRS5193, TASK 72-60-42-300-002 (REPAIR-002)

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

        1. Reject.

    7. SUBTASK 72-60-42-220-071 Examine the Bevel Radial Gearshaft (01-400) Upper Bearing Shoulder, Location 3

    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. Repair VRS5194, TASK 72-60-42-300-013 (REPAIR-013)

    8. SUBTASK 72-60-42-220-072 Examine the Bevel Radial Gearshaft (01-400) Upper Bearing Journal, Location 4073

    1. Refer to Figure.

      2. Diameter.

        1. Between 2.3811 and 2.3806 in. (60.479 and 60.466 mm).

        1. Accept

        2. Less than 2.3806 in. (60.466 mm).

        1. Repair VRS5195, TASK 72-60-42-300-014 (REPAIR-014)

      3. Runout.

        1. In 0.001 in. (0.025 mm) in relation to surfaces A and B.

        1. Accept

        2. More than Step.

        1. Repair VRS5195, TASK 72-60-42-300-014 (REPAIR-014)

    9. SUBTASK 72-60-42-220-073 Examine the Bevel Radial Gearshaft (01-400) Lower Ball Bearing Journal, Location 4074

    1. Refer to Figure.

      2. Diameter.

        1. Between 2.3915 and 2.3910 in. (60.745 and 60.732 mm).

        1. Accept

        2. Less than 2.3910 in. (60.732 mm).

        1. Repair VRS5196, TASK 72-60-42-300-015 (REPAIR-015)

      3. Runout.

        1. In 0.001 in. (0.025 mm) in relation to surfaces A and B.

        1. Accept

        2. More than Step.

        1. Repair, VRS5196 TASK 72-60-42-300-015 (REPAIR-015)

    10. SUBTASK 72-60-42-220-074 Examine the Bevel Radial Gearshaft (01-400) Lower Roller Bearing Journal, Location 4076

    1. Refer to Figure.

      2. Diameter.

        1. Between 2.3811 and 2.3806 in. (60.479 and 60.466 mm).

        1. Accept

        2. Less than 2.3806 in. (60.466 mm).

        1. Repair VRS5197, TASK 72-60-42-300-016 (REPAIR-016)

      3. Runout.

        1. In 0.001 in. (0.025 mm) in relation to surfaces A and B.

        1. Accept

        2. More than Step.

        1. Repair VRS5197, TASK 72-60-42-300-016 (REPAIR-016)

    11. SUBTASK 72-60-42-220-075 Examine the Bevel Radial Gearshaft (01-400) Lower Bearing Shoulder, Location 4

    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. Repair VRS5198, TASK 72-60-42-300-017 (REPAIR-017).

    12. Figure: Locations - Bevel Radial Gearshaft

    Locations - Bevel Radial Gearshaft

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Incorporate Location 7 info to task (16VF824)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
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