TASK 72-60-29-200-003 Deoiler Gear - Examine, Inspection-003

DMC:V2500-A0-72-60-2901-00A-300A-C|Issue No:003.00|Issue Date:2019-08-01

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 72-60-29-200-003 Deoiler Gear - Examine, Inspection-003

Effectivity

FIG/ITEM

PART NO.

01-290

4B0004

General

This TASK gives the procedure for the inspection of the deoiler gear. For the other parts of the deoiler gear and impellor assembly, refer to TASK 72-60-29-200-000 (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 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/SUBTASK numbers are in the SPM.

References

Refer to 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 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 72-60-29-240-054 Do a Crack Test on the Deoiler Gear (01-290) (Magnetic)

    1. Clean the parts. Refer to the TASK 72-60-29-100-000 (CLEANING-000).

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

        PART IDENT

        PROCEDURE

        CURRENT/INSPECT

        TASK/SUBTASK

        Deoiler gear

        CF

        1000 Amp

        CF

        2000 Amp

        SUBTASK 70-24-01-240-010

        Coil

        3500 A/T

        SUBTASK 70-24-01-240-014

        1. Cracked

        1. Reject

    2. SUBTASK 72-60-29-220-071 Examine the Deoiler Gear (01-290) 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, VRS5167 TASK 72-60-29-300-025 (REPAIR-025)

      3. Damage on the contact surface.

        1. Superficial damages

        1. Repair, VRS5167 TASK 72-60-29-300-025 (REPAIR-025)

      4. Chips, flakes or fretting

      1. Reject

      5. Wear of teeth.

        1. Measure the dimension over the diametrically opposite 0.1969 in. (5.000 mm) diameter pins:

          1. Between 4.8061 in. and 4.7989 in. (122.076 mm and 121.891 mm)

          1. Accept

          2. Less than 4.7969 in. (121.841 mm)

          1. Reject

      6. 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 2

          1. Less than 56 HRC measured at different locations

          1. Reject

        2. Measure the hardness of gear area adjacent to teeth at location 3

          1. Less than 30 HRC measured at different locations

          1. Reject

    3. SUBTASK 72-60-29-220-072 Examine the Deoiler Gear (01-290) Front 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, VRS5173 TASK 72-60-29-300-019 (REPAIR-019)

    4. SUBTASK 72-60-29-220-073 Examine the Deoiler Gear (01-290) Impellor Journal, Location 5

    1. Refer to Figure.

      2. Diameter.

        1. Between 2.1339 in. and 2.1327 in. (54.200 mm and 54.170 mm)

        1. Accept

        2. Less than 2.1327 in. (54.170 mm)

        1. Repair, VRS5169 TASK 72-60-29-300-015 (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, VRS5169 TASK 72-60-29-300-015 (REPAIR-015)

    5. SUBTASK 72-60-29-220-074 Examine the Deoiler Gear (01-290) Rotating Ring Journal, Location 4004

    1. Refer to Figure.

      2. Diameter.

        1. Between 1.9291 in. and 1.9281 in. (49.000 mm and 48.975 mm)

        1. Accept

        2. Less than 1.9281 in. (48.975 mm)

        1. Repair, VRS5168 TASK 72-60-29-300-014 (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, VRS5168 TASK 72-60-29-300-014 (REPAIR-014)

    6. SUBTASK 72-60-29-220-075 Examine the Deoiler Gear (01-290) Rear and Front Bearing Journals, Locations 4003 and 4001

    1. Refer to Figure.

      2. Damage on the surface.

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

        1. Repair, VRS5167 TASK 72-60-29-300-025 (REPAIR-025)

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

        1. Repair, VRS5170 TASK 72-60-29-300-016 (REPAIR-016) Repair, VRS5171 TASK 72-60-29-300-017 (REPAIR-017)

    7. SUBTASK 72-60-29-220-076 Examine the Deoiler Gear (01-290) Front Bearing Journal, Location 4001

    1. Refer to Figure

      2. Diameter.

        1. Between 2.3634 in. and 2.3626 in. (60.030 mm and 60.011 mm)

        1. Accept

        2. Less than 2.3626 in. (60.011 mm)

        1. Repair, VRS5170 TASK 72-60-29-300-016 (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, VRS5170 TASK 72-60-29-300-016 (REPAIR-016)

    8. SUBTASK 72-60-29-220-077 Examine the Deoiler Gear (01-290) Rear Bearing Journal, Location 4003

    1. Refer to Figure.

      2. Diameter.

        1. Between 1.7726 in. and 1.7720 in. (45.025 mm and 45.009 mm)

        1. Accept

        2. Less than 1.7720 in. (45.009 mm)

        1. Repair, VRS5171 TASK 72-60-29-300-017 (REPAIR-017)

      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, VRS5171 TASK 72-60-29-300-017 (REPAIR-017)

    9. SUBTASK 72-60-29-220-078 Examine the Deoiler Gear (01-290) Rear Bearing Shoulder, Location 6

    1. Refer to Figure.

      2. Runout.

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

        1. Accept

        2. More than Step

        1. Repair, VRS5172 TASK 72-60-29-300-018 (REPAIR-018)

    10. SUBTASK 72-60-29-220-197 Examine the Expansion Plug (01-330), Location 7

    1. Refer to Figure.

      2. Retention.

        1. The Expansion Plug is missing, not properly seated or is able to move.

        1. Repair, VRS5704 TASK 72-60-29-300-043 (REPAIR-043).

        2. Other than Step.

        1. Accept.

    11. Figure: Locations - Deoiler Gear

    Locations - Deoiler Gear

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Fix SUBTASK 72-60-29-220-197 title to Location 7

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