TASK 72-60-21-200-002 Main Gearbox Casing - Examine, Inspection-002

DMC:V2500-A0-72-60-2101-00A-300A-C|Issue No:009.00|Issue Date:2021-08-01

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 72-60-21-200-002 Main Gearbox Casing - Examine, Inspection-002

Effectivity

FIG/ITEM

PART NO.

02-050

4B0053

02-050

4B0054

02-050

4B0055

02-050

4B0057

02-050

4B0400

02-050

4B0402

02-050

4B0423

General

This TASK gives the procedure for the inspection of the gearbox casing.

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 SPM TASK 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to TASK 72-60-21-100-000.

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. Limits for cracks are given in the SUBTASK for each part.

A ** following 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 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 SPM.

References

Refer to SPM for data on these items.

Definition of damage, SPM TASK 70-02-02-350-501 and SPM TASK 70-02-00-350-501.

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 SPM.

Method of testing for crack Indications,

Chemical processes,

Surface protection.

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
FPI Inspection stationLOCALFPI Inspection station

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-001 SOLVENT, DELETEDX111XCoMat 01-001
CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)X222XCoMat 06-063

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-21-230-052 Do a Crack Test on the Gearbox Casing (02-050) (Fluorescent Penetrant)

    1. Clean the parts. Refer to the TASK 72-60-21-100-000.

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

        PART IDENT

        TASK/OP

        Gearbox casing

        1. Cracks.

        1. Reject.

        2. Through porosity.

        1. Reject.

    2. SUBTASK 72-60-21-220-053 Visually Examine the Gearbox Casing (02-050) Bores at Locations 3, 6, 10, 13, 15, 28, 4054, 4015, 4032, 4002 and 4007, 4010 and 4014, 4018 and 4022, 4025 and 4027, 4030 and 4033, 4036 and 4038, 4041 and 4045, 4049 and 4053

    1. Refer to Figure, Figure, Figure, Figure and Figure.

      2. Damages that can be related to important deformation of the casing as oil leaks, high looseness between gears, unusual bearings wear or similar operational issues.

        1. Damages are not found.

        1. Accept. Do not do SUBTASKS 72-60-21-220-061, 72-60-21-220-062, 72-60-21-220-063, 72-60-21-220-064, 72-60-21-220-065, 72-60-21-220-066, 72-60-21-220-067, 72-60-21-220-068, 72-60-21-220-069, 72-60-21-220-070, 72-60-21-220-071, 72-60-21-220-072, 72-60-21-220-073, 72-60-21-220-074, 72-60-21-220-075, 72-60-21-220-076, 72-60-21-220-077, 72-60-21-220-078, 72-60-21-220-079, 72-60-21-220-080, 72-60-21-220-081, 72-60-21-220-082, 72-60-21-220-083, 72-60-21-220-084, 72-60-21-220-085, 72-60-21-220-086, 72-60-21-220-087, 72-60-21-220-088, 72-60-21-220-089, 72-60-21-220-090, 72-60-21-220-091, 72-60-21-220-092, 72-60-21-220-093, 72-60-21-220-094, 72-60-21-220-095, 72-60-21-220-096, 72-60-21-220-097, 72-60-21-220-098, 72-60-21-220-099, 72-60-21-220-100, 72-60-21-220-101, 72-60-21-220-102, 72-60-21-220-103, 72-60-21-220-104, 72-60-21-220-175.

        2. Damages are found.

        1. Do SUBTASKS 72-60-21-220-061, 72-60-21-220-062, 72-60-21-220-063, 72-60-21-220-064, 72-60-21-220-065, 72-60-21-220-066, 72-60-21-220-067, 72-60-21-220-068, 72-60-21-220-069, 72-60-21-220-070, 72-60-21-220-071, 72-60-21-220-072, 72-60-21-220-073, 72-60-21-220-074, 72-60-21-220-075, 72-60-21-220-076, 72-60-21-220-077, 72-60-21-220-078, 72-60-21-220-079, 72-60-21-220-080, 72-60-21-220-081, 72-60-21-220-082, 72-60-21-220-083, 72-60-21-220-084, 72-60-21-220-085, 72-60-21-220-086, 72-60-21-220-087, 72-60-21-220-088, 72-60-21-220-089, 72-60-21-220-090, 72-60-21-220-091, 72-60-21-220-092, 72-60-21-220-093, 72-60-21-220-094, 72-60-21-220-095, 72-60-21-220-096, 72-60-21-220-097, 72-60-21-220-098, 72-60-21-220-099, 72-60-21-220-100, 72-60-21-220-101, 72-60-21-220-102, 72-60-21-220-103, 72-60-21-220-104, 72-60-21-220-175.

    3. SUBTASK 72-60-21-220-054 Examine the Gearbox Casing (02-050) Rough Surfaces at Location 1

    1. Refer to Figure.

      2. Nicks, scores, dents or scratches.

        1. All quantity, all length not more than 0.035 in. (0.90 mm) in depth.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5253 TASK 72-60-21-300-002 (REPAIR-002).

    4. SUBTASK 72-60-21-220-055 Examine the Gearbox Casing (02-050) Machined Seal Surface at Location 2

    1. Refer to Figure.

      2. Nicks, scores, dents or scratches.

        1. All quantity, all length, not more than 0.004 in. (0.10 mm) in depth not extended across the seal surface.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5253 TASK 72-60-21-300-002 (REPAIR-002).

    5. SUBTASK 72-60-21-220-056 Examine the Gearbox Casing (02-050) Machined not Seal Surface at Location 3

    1. Refer to Figure.

      2. Nicks, scores, dents or scratches.

        1. All quantity, all length, not more than 0.008 in. (0.20 mm) in depth.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5253 TASK 72-60-21-300-002 (REPAIR-002).

    6. SUBTASK 72-60-21-220-057 Examine the Gearbox Casing (02-050) Protective Finish

      1. Light corrosion or pitting.

      1. Repair, VRS5254 TASK 72-60-21-300-003 (REPAIR-003).

    7. SUBTASK 72-60-21-220-058 Examine the Gearbox Casing (02-050) Studs/Lockrings

      1. Perpendicularity.

        1. More than 0.0138 in. (0.35 mm) each 3.937 in. (100.00 mm).

        1. Repair, VRS5255 TASK 72-60-21-300-004 (REPAIR-004).

      2. Loose or damaged.

      1. Repair, VRS5255 TASK 72-60-21-300-004 (REPAIR-004).

    8. SUBTASK 72-60-21-220-215 Examine the Gearbox Casing (02-050) Crank Cover Stud Holes at Location 25, if Accessible.

    1. Refer to Figure.

      2. Damaged threads.

      1. Repair, VRS5713 TASK 72-60-21-300-060 (REPAIR-060). If the damage is such that it cannot be repaired with an oversize stud, do bushing repair by Repair, VRS5679 TASK 72-60-21-300-053 (REPAIR-053).

    9. SUBTASK 72-60-21-220-059 Examine the Gearbox Casing (02-050) Threaded Inserts/Lockrings

      1. Loose or damaged.

      1. Repair, VRS5256 TASK 72-60-21-300-005 (REPAIR-005).

    10. SUBTASK 72-60-21-220-060 Examine the Gearbox Casing (02-050) Helicoil Inserts

      1. Loose or damaged inserts.

      1. Repair, VRS5345 TASK 72-60-21-300-006 (REPAIR-006).

    11. SUBTASK 72-60-21-220-199 Examine the Gearbox Casing (02-050) Helical Insert Holes at Location 27, if Exposed

    1. Refer to Figure.

      2. Damaged threads in parent material.

      1. Repair, VRS5711 TASK 72-60-21-300-059 (REPAIR-059).

    12. SUBTASK 72-60-21-220-061 Examine the Gearbox Casing (02-050) IDG Bearing Bore at Location 4010

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 2.7553 in. and 2.7569 in. (69.985 mm and 70.025 mm).

        1. Accept.

        2. More than Step.

        1. Repair, VRS5288 TASK 72-60-21-300-007 (REPAIR-007).

      3. True position.

        1. In a diameter of 0.0016 in. (0.040 mm) FIR with nominal bore location: x = -14.788 in. (-375.626 mm), y = -5.472 in. (-139.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5288 TASK 72-60-21-300-007 (REPAIR-007).

    13. SUBTASK 72-60-21-220-062 Examine the Gearbox Casing (02-050) IDG Bearing Mating Face at Location 1

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.002 in. (0.050 mm) FIR in relation to Surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5289 TASK 72-60-21-300-008 (REPAIR-008).

    14. SUBTASK 72-60-21-220-063 Examine the Gearbox Casing (02-050) Starter Idler Bearing Bore at Location 4025

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 3.0309 in. and 3.0328 in. (76.985 mm and 77.035 mm).

        1. Accept.

        2. More than 3.0328 in. (77.035 mm).

        1. Repair, VRS5280 TASK 72-60-21-300-009 (REPAIR-009).

      3. True position.

        1. In a diameter of 0.0016 in. (0.040 mm) FIR with nominal bore location: x = -4.425 in. (-112.391 mm), y = -7.913 in. (-201.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5280 TASK 72-60-21-300-009 (REPAIR-009).

    15. SUBTASK 72-60-21-220-064 Examine the Gearbox Casing (02-050) Starter Idler Bearing Mating Face at Location 2

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to Surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5281 TASK 72-60-21-300-010 (REPAIR-010).

    16. SUBTASK 71-60-21-220-065 Examine the Gearbox Casing (02-050) Starter Idler Cover Bore at Location 3

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 1.3799 in. and 1.3839 in. (35.050 mm and 35.150 mm).

        1. Accept.

        2. More than 1.3839 in. (35.150 mm).

        1. Repair, VRS5278 TASK 72-60-21-300-011 (REPAIR-011).

      3. True position.

        1. In a diameter of 0.010 in. (0.250 mm) FIR with nominal bore location: x = -4.425 in. (-112.391 mm), y = -7.913 in. (-201.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5278 TASK 72-60-21-300-011 (REPAIR-011).

      4. Perpendicularity.

        1. In 0.0020 in. (0.05 mm) FIR in relation to surface D.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5278 TASK 72-60-21-300-011 (REPAIR-011).

    17. SUBTASK 72-60-21-220-066 Examine the Gearbox Casing (02-050) Starter Idler Cover Mating Face at Location 4

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to Surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5279 TASK 72-60-21-300-012 (REPAIR-012).

      3. Planarity.

        1. In 0.0008 in. (0.020 mm) FIR.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5279 TASK 72-60-21-300-012 (REPAIR-012).

    18. SUBTASK 72-60-21-220-067 Examine the Gearbox Casing (02-050) Starter Housing Mating Face at Location 5

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to Surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5283 TASK 72-60-21-300-013 (REPAIR-013).

      3. Planarity.

        1. In 0.0008 in. (0.020 mm).

        1. Accept.

        2. More than Step.

        1. Repair, VRS5283 TASK 72-60-21-300-013 (REPAIR-013).

    19. SUBTASK 72-60-21-220-068 Examine the Gearbox Casing (02-050) Starter Housing Bore at Location 4022

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 7.4016 in. and 7.4059 in. (188.000 mm and 188.110 mm).

        1. Accept.

        2. More than 7.4059 in. (188.110 mm).

        1. Repair, VRS5282 TASK 72-60-21-300-014 (REPAIR-014).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR with nominal bore location: x = -9.582 in. (-243.372 mm), y = -7.244 in. (-184.000 mm) in relation to the system W.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5282 TASK 72-60-21-300-014 (REPAIR-014).

    20. SUBTASK 72-60-21-220-069 Examine the Gearbox Casing (02-050) Oil Nozzle Bore at Location 6

    1. Refer to Figure.

      2. Inner diameter A.

        1. Between 0.5925 in. and 0.5965 in. (15.050 mm and 15.150 mm).

        1. Accept.

        2. More than 0.5965 in. (15.150 mm).

        1. Repair, VRS5296 TASK 72-60-21-300-015 (REPAIR-015).

      3. Concentricity.

        1. In a diameter of 0.002 in. (0.05 mm) FIR in relation to Surface B.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5296 TASK 72-60-21-300-015 (REPAIR-015).

      4. Inner diameter B.

        1. Between 0.750 and 0.7539 in. (19.050 and 19.150 mm).

        1. Accept.

        2. More than 0.7539 in. (19.150 mm).

        1. Repair, VRS5420 TASK 72-60-21-300-048 (REPAIR-048).

      5. True position.

      1. Deleted.

    21. SUBTASK 72-60-21-220-070 Examine the Gearbox Casing (02-050) Deoiler Housing Bore at Location 4007

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 6.9291 in. and 6.9330 in. (176.000 mm and 176.100 mm).

        1. Accept.

        2. More than 6.9330 in. (176.100 mm).

        1. Repair, VRS5292 TASK 72-60-21-300-016 (REPAIR-016).

      3. True position.

        1. In a diameter of 0.0016 in. (0.040 mm) FIR with nominal bore location: x = -19.165 in. (-486.781 mm), y = -4.055 in. (-103.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5292 TASK 72-60-21-300-016 (REPAIR-016).

    22. SUBTASK 72-60-21-220-071 Examine the Gearbox Casing (02-050) Deoiler Housing Mating Face at Location 7

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to Surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5293 TASK 72-60-21-300-017 (REPAIR-017).

      3. Planarity.

        1. In 0.0008 in. (0.020 mm).

        1. Accept.

        2. More than Step.

        1. Repair, VRS5293 TASK 72-60-21-300-017 (REPAIR-017).

    23. SUBTASK 72-60-21-220-072 Examine the Gearbox Casing (02-050) PMA Housing Mating Face at Location 8

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to Surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5275 TASK 72-60-21-300-018 (REPAIR-018).

      3. Planarity.

        1. In 0.0008 in. (0.020 mm) FIR.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5275 TASK 72-60-21-300-018 (REPAIR-018).

    24. SUBTASK 72-60-21-220-073 Examine the Gearbox Casing (02-050) Oil Scavenge Pump Bearing Bore at Location 4036

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 2.9522 in. and 2.9539 in. (74.985 mm and 75.030 mm).

        1. Accept.

        2. More than 2.9539 in. (75.030 mm).

        1. Repair, VRS5272 TASK 72-60-21-300-019 (REPAIR-019).

      3. True position.

        1. In a diameter of 0.0016 in. (0.040 mm) FIR with nominal bore location: x = 4.439 in. (112.746 mm), y = -7.756 in. (-197.000 mm) in relation to the system W.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5272 TASK 72-60-21-300-019 (REPAIR-019).

    25. SUBTASK 72-60-21-220-074 Examine the Gearbox Casing (02-050) Oil Scavenge Pump Bearing Mating Face at Location 9

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to Surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5273 TASK 72-60-21-300-020 (REPAIR-020).

    26. SUBTASK 72-60-21-220-075 Examine the Gearbox Casing (02-050) PMA Oil Tube Bore at Location 10

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 0.8281 in. and 0.8321 in. (21.035 mm and 21.135 mm).

        1. Accept.

        2. More than 0.8321 in. (21.135 mm).

        1. Repair, VRS5294 TASK 72-60-21-300-021 (REPAIR-021).

      3. True position.

        1. In a diameter of 0.0020 in. (0.050 mm) FIR with nominal bore location: x = -1.220 in. (-31.000 mm), y = -10.157 in. (-258.000 mm) in relation to the system W.

        1. Accept.

        2. More than Step.

        1. Repair VRS5294 TASK 72-60-21-300-021 (REPAIR-021).

    27. SUBTASK 72-60-21-220-076 Examine the Gearbox Casing (02-050) Fuel Pump Bearing Bore at Location 4049

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 2.9522 in. and 2.9539 in. (74.985 mm and 75.030 mm).

        1. Accept.

        2. More than 2.9539 in. (75.030 mm).

        1. Repair, VRS5260 TASK 72-60-21-300-022 (REPAIR-022).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR in relation to system W for the following nominal bore locations:

          For PN 4B0053, 4B0054, 4B0055: x = 14.139 in. (359.123 mm), y = -5.472 in. (-139.000 mm).

          For PN 4B0400, 4B0402, 4B0423: x = 13.955 in. (354.461 mm), y = -5.552 in. (-141.018 mm).

        1. Accept.

        2. More than Step.

        1. Repair, VRS5260 TASK 72-60-21-300-022 (REPAIR-022).

    28. SUBTASK 72-60-21-220-077 Examine the Gearbox Casing (02-050) Fuel Pump Bearing Mating Face at Location 11

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to Surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5261 TASK 72-60-21-300-023 (REPAIR-023).

    29. SUBTASK 72-60-21-220-078 Examine the Gearbox Casing (02-050) Oil Tank Mating Face at Location 12

    1. Refer to Figure.

      2. Perpendicularity.

      1. Deleted.

    30. SUBTASK 72-60-21-220-079 Examine the Gearbox Casing (02-050) Oil Tank Bore at Location 13

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 7.0866 in. and 7.0891 in. (180.000 mm and 180.063 mm).

        1. Accept.

        2. More than 7.0891 in. (180.063 mm).

        1. Repair, VRS5258 TASK 72-60-21-300-025 (REPAIR-025).

      3. True position.

      1. Deleted.

    31. SUBTASK 72-60-21-220-080 Examine the Gearbox Casing (02-050) Oil Pressure Pump Mating Face at Location 14

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5265 TASK 72-60-21-300-026 (REPAIR-026).

      3. Planarity.

        1. In 0.0008 in. (0.020 mm) FIR.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5265 TASK 72-60-21-300-026 (REPAIR-026).

    32. SUBTASK 72-60-21-220-081 Examine the Gearbox Casing (02-050) Oil Pressure Pump Bore at Location 15

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 5.0394 in. and 5.0425 in. (128.000 mm and 128.080 mm).

        1. Accept.

        2. More than 5.0425 in. (128.080 mm).

        1. Repair, VRS5264 TASK 72-60-21-300-027 (REPAIR-027).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR with nominal bore location: x = 16.406 in. (416.702 mm), y = -4.882 in. (-124.000 mm) in relation to the system W.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5264 TASK 72-60-21-300-027 (REPAIR-027).

    33. SUBTASK 72-60-21-220-082 Examine the Gearbox Casing (02-050) Hydraulic Pump Housing Bore at Location 4045

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 6.9685 in. and 6.9728 in. (177.000 mm and 177.110 mm).

        1. Accept.

        2. More than 6.9728 in. (177.110 mm).

        1. Repair, VRS5266 TASK 72-60-21-300-028 (REPAIR-028).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR with nominal bore location: x = 9.137 in. (232.088 mm), y = -7.638 in. (-194.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5266 TASK 72-60-21-300-028 (REPAIR-028).

    34. SUBTASK 72-60-21-220-083 Examine the Gearbox Casing (02-050) Hydraulic Pump Housing Mating Face at Location 16

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5267 TASK 72-60-21-300-029 (REPAIR-029).

      3. Planarity.

        1. In 0.0008 in. (0.020 mm) FIR.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5267 TASK 72-60-21-300-029 (REPAIR-029).

    35. SUBTASK 72-60-21-220-084 Examine the Gearbox Casing (02-050) Support Gearbox Bushes at Location 17

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 0.6256 in. and 0.6263 in. (15.890 mm and 15.908 mm).

        1. Accept.

        2. More than 0.6263 in. (15.908 mm).

        1. Repair, VRS5295 TASK 72-60-21-300-030 (REPAIR-030).

    36. SUBTASK 72-60-21-220-085 Examine the Gearbox Casing (02-050) PMA Housing Bore at Location 4033

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 4.3307 in. and 4.3334 in. (110.000 mm and 110.070 mm).

        1. Accept.

        2. More than 4.3334 in. (110.070 mm).

        1. Repair, VRS5274 TASK 72-60-21-300-031 (REPAIR-031).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR with nominal bore location: x = 0 in. (0 mm), y = -7.441 in. (-189.000 mm) in relation to the system W.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5274 TASK 72-60-21-300-031 (REPAIR-031).

    37. SUBTASK 72-60-21-220-086 Examine the Gearbox Casing (02-050) Fuel Pump Housing Bore at Location 4053

    1. Refer to Figure.

      2. Inner diameter a.

        1. Between 5.0394 in. and 5.0425 in. (128.000 mm and 128.080 mm).

        1. Accept.

        2. More than 5.0425 in. (128.080 mm).

        1. Repair, VRS5262 TASK 72-60-21-300-032 (REPAIR-032).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR in relation to system W for the following nominal bore locations:

          For PN 4B0053, 4B0054, 4B0055: x = 14.139 in. (359.123 mm), y = -5.472 in. (-139.000 mm).

          For PN 4B0400, 4B0402, 4B0423: x = 13.955 in. (354.461 mm), y = -5.552 in. (-141.018 mm).

        1. Accept.

        2. More than Step.

        1. Repair, VRS5262 TASK 72-60-21-300-032 (REPAIR-032).

    38. SUBTASK 72-60-21-220-087 Examine the Gearbox Casing (02-050) Hydraulic Pump Bearing Bore at Location 4041

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 2.7553 in. and 2.7568 in. (69.985 mm and 70.025 mm).

        1. Accept.

        2. More than 2.7568 in. (70.025 mm).

        1. Repair, VRS5268 TASK 72-60-21-300-033 (REPAIR-033).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR with nominal bore location: x = 9.137in. (232.088 mm), y= -7.638in. (-194.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5268 TASK 72-60-21-300-033 (REPAIR-033).

    39. SUBTASK 72-60-21-220-088 Examine the Gearbox Casing (02-050) Hydraulic Pump Bearing Mating Face at Location 18

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5269 TASK 72-60-21-300-034 (REPAIR-034).

    40. SUBTASK 72-60-21-220-089 Examine the Gearbox Casing (02-050) Pin (2 off) at Location 4055

      1. Damaged or loose.

      1. Repair, VRS5257 TASK 72-60-21-300-035 (REPAIR-035).

    41. SUBTASK 72-60-21-220-090 Examine the Gearbox Casing (02-050) Fuel Pump Housing Bore at Location 4054

    1. Refer to Figure.

      2. Inner diameter b.

        1. Between 5.1201 in. and 5.1248 in. (130.050 mm and 130.170 mm).

        1. Accept.

        2. More than 5.1248 in. (130.170 mm).

        1. Repair, VRS5421 TASK 72-60-21-300-049 (REPAIR-049).

      3. Concentricity.

        1. In a diameter of 0.0020 in. (0.05 mm) FIR in relation to surface M.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5421 TASK 72-60-21-300-049 (REPAIR-049).

    42. SUBTASK 72-60-21-220-091 Examine the Gearbox Casing (02-050) Fuel Pump Housing Mating Face at Location 19

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5263 TASK 72-60-41-300-036 (REPAIR-036).

      3. Planarity.

        1. In 0.0008 in. (0.020 mm) FIR.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5263 TASK 72-60-21-300-036 (REPAIR-036).

    43. SUBTASK 72-60-21-220-092 Examine the Gearbox Casing (02-050) Lay Shaft Bearing Bore at Location 4030

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 3.5426 in. and 3.5444 in. (89.982 mm and 90.030 mm).

        1. Accept.

        2. More than Step.

        1. Repair, VRS5276 TASK 72-60-21-300-037 (REPAIR-037).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR with nominal bore location: x = 0 in. (0 mm), y = -7.441 in. (-189.000 mm) in relation to the system W.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5276 TASK 72-60-21-300-037 (REPAIR-037).

    44. SUBTASK 72-60-21-220-093 Examine the Gearbox Casing (02-050) Lay Shaft Bearing Mating Face at Location 20

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5277 TASK 72-60-21-300-038 (REPAIR-038).

    45. SUBTASK 72-60-21-220-094 Examine the Gearbox Casing (02-050) Starter Bearing Bore at Location 4018

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 2.9522 in. and 2.9539 in. (74.985 mm and 75.030 mm).

        1. Accept.

        2. More than 2.9539 in. (75.030 mm).

        1. Repair, VRS5284 TASK 72-60-21-300-039 (REPAIR-039).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR with nominal bore location: x = -9.582 in. (-243.372 mm), y = -7.244 in. (-184.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5284 TASK 72-60-21-300-039 (REPAIR-039).

    46. SUBTASK 72-60-21-220-095 Examine the Gearbox Casing (02-050) Starter Bearing Mating Face at Location 21

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5285 TASK 72-60-21-300-040 (REPAIR-040).

    47. SUBTASK 72-60-21-220-096 Examine the Gearbox Casing (02-050) Deoiler Bearing Bore at Location 4002

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 2.7553 in. and 2.7568 in. (69.985 mm and 70.025 mm).

        1. Accept.

        2. More than 2.7568 in. (70.025 mm).

        1. Repair, VRS5290 TASK 72-60-21-300-041 (REPAIR-041).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR with nominal bore location: x = -19.165 in. (-486.781 mm), y = -4.055 in. (-103.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5290 TASK 72-60-21-300-041 (REPAIR-041).

    48. SUBTASK 72-60-21-220-097 Examine the Gearbox Casing (02-050) Deoiler Bearing Mating Face at Location 22

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5291 TASK 72-60-21-300-042 (REPAIR-042).

    49. SUBTASK 72-60-21-220-098 Examine the Gearbox Casing (02-050) IDG Housing Bore at Location 4014

    1. Refer to Figure.

      2. Inner diameter a.

        1. Between 7.0079 in. and 7.0118 in. (178.000 mm and 178.100 mm).

        1. Accept.

        2. More than 7.0118 in. (178.100 mm).

        1. Repair, VRS5286 TASK 72-60-21-300-043 (REPAIR-043).

      3. True position.

        1. In a diameter of 0.0016 in. (0.04 mm) FIR with nominal bore location: x = -14.788 in. (-375.626 mm), y = -5.472 in. (-139.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5286 TASK 72-60-21-300-043 (REPAIR-043).

    50. SUBTASK 72-60-21-220-099 Examine the Gearbox Casing (02-050) IDG Housing Bore at Location 4015

    1. Refer to Figure.

      2. Inner diameter b.

        1. Between 7.0886 in. and 7.0933 in. (180.050 mm and 180.170 mm).

        1. Accept.

        2. More than 7.0933 in. (180.170 mm).

        1. Repair, VRS5422 TASK 72-60-21-300-050 (REPAIR-050).

      3. Concentricity.

        1. In a diameter of 0.0010 in. (0.025 mm) FIR in relation to the surface O.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5422 TASK 72-60-21-300-050 (REPAIR-050).

    51. SUBTASK 72-60-21-220-100 Examine the Gearbox Casing (02-050) IDG Housing Mating Face at Location 23

    1. Refer to Figure.

      2. Parallelism.

        1. In 0.0020 in. (0.050 mm) FIR in relation to surface C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5287 TASK 72-60-21-300-044 (REPAIR-044).

      3. Planarity.

        1. In 0.0008 in. (0.020 mm).

        1. Accept.

        2. More than Step.

        1. Repair, VRS5287 TASK 72-60-21-300-044 (REPAIR-044).

    52. SUBTASK 72-60-21-220-101 Examine the Gearbox Casing (02-050) Angle Gearbox Support Mating Face at Location 24

    1. Refer to Figure.

      2. Planarity.

        1. In 0.0004 in. (0.010 mm) each 3.9370 in. (100.000 mm).

        1. Accept.

        2. More than Step.

        1. Repair, VRS5271 TASK 72-60-21-300-045 (REPAIR-045).

      3. Dimension P.

        1. Between 0.4508 in. and 0.4429 in. (11.45 mm and 11.25 mm).

        1. Accept.

        2. Less than 0.4429 in. (11.25 mm).

        1. Repair, VRS5271 TASK 72-60-21-300-045 (REPAIR-045).

    53. SUBTASK 72-60-21-220-102 Examine the Gearbox Casing (02-050) Angle Gearbox Support Bore at Location 4027

    1. Refer to Figure.

      2. Inner diameter b.

        1. Between 6.8524 in. and 6.8578 in. (174.050 mm and 174.190 mm).

        1. Accept.

        2. More than 6.8578 in. (174.190 mm).

        1. Repair, VRS5270 TASK 72-60-21-300-046 (REPAIR-046).

      3. True position.

        1. In a diameter of 0.0020 in. (0.05 mm) FIR with nominal bore location: x = -5.709 in. (-145.000 mm), y = -7.244 in. (-184.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5270 TASK 72-60-21-300-046 (REPAIR-046).

    54. SUBTASK 72-60-21-220-103 Examine the Gearbox Casing (02-050) Angle Gearbox Support Bore at Location 4032

    1. Refer to Figure.

      2. Inner Diameter c.

        1. Between 3.3091 in. and 3.3129 in. (84.050 mm and 84.150 mm).

        1. Accept.

        2. More than 3.3129 in. (84.15 mm).

        1. Repair, VRS5423 TASK 72-60-21-300-051 (REPAIR-051).

      3. Concentricity.

        1. If in a diameter of 0.0020 in. (0.05 mm) FIR in relation to the surface Q.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5423 TASK 72-60-21-300-051 (REPAIR-051).

    55. SUBTASK 72-60-21-220-104 Examine the Gearbox Casing (02-050) Angle Gearbox Support Bore at Location 4038

    1. Refer to Figure.

      2. Inner diameter a.

        1. Between 6.8524 in. and 6.8578 in. (174.050 mm and 174.190 mm).

        1. Accept.

        2. More than 6.8578 in. (174.190 mm).

        1. Repair, VRS5424 TASK Fig. 72-60-21-300-052 (REPAIR-052).

      3. True position.

        1. In a diameter of 0.0020 in. (0.05 mm) FIR with normal bore location: x = 5.709 in. (145.000 mm), y = -7.244 in. (-184.000 mm) in relation to the W system.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5424 TASK 72-60-21-300-052 (REPAIR-052).

    56. SUBTASK 72-60-21-220-170 Examine the Gearbox Casing (02-050) Hydraulic Pump, Fuel Pump and IDG Drain Ports at Location 25

    1. Refer to Figure and Figure.

      2. Thread damage.

        1. Less than one half of one full thread.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5706 TASK 72-60-21-300-055 (REPAIR-055).

        3. Loose missing or damaged bushing(s), if present.

        1. Repair, VRS5706 TASK 72-60-21-300-055 (REPAIR-055).

    57. SUBTASK 72-60-21-220-174 Examine the Gearbox Casing (02-050) Oil Nozzle Bore at Location 26

    1. Refer to Figure.

      2. Inner diameter A.

        1. For PNs 4B0053, 4B0054, 4B0055 and 4B0057:

          1. Between 0.5925 in. and 0.5965 in. (15.050 mm and 15.150 mm).

          1. Accept.

          2. More than 0.5965 in. (15.150 mm).

          1. Repair, VRS5296 TASK 72-60-21-300-015 (REPAIR-015).

        2. For PNs 4B0400, 4B0402 and 4B0423:

          1. Between 0.6319 in. and 0.6358 in. (16.050 mm and 16.150 mm).

          1. Accept.

          2. More than 0.6358 in. (16.150 mm).

          1. Reject.

        3. Concentricity.

          1. For PNs 4B0053, 4B0054, 4B0055 and 4B0057:

            1. In a diameter of 0.002 in. (0.05 mm) FIR in relation to Surface B.

            1. Accept.

            2. More than Step.

            1. Repair, VRS5296 TASK 72-60-21-300-015 (REPAIR-015).

          2. For PNs 4B0400, 4B0402 and 4B0423:

            1. In a diameter of 0.002 in. (0.05 mm) FIR in relation to Surface B.

            1. Accept.

            2. More than Step.

            1. Reject.

        4. Inner diameter B.

          1. For PNs 4B0053, 4B0054, 4B0055, and 4B0057:

            1. Between 0.750 in. and 0.7539 in. (19.050 mm and 19.150 mm).

            1. Accept.

            2. More than 0.7539 in. (19.150 mm).

            1. Repair, VRS5420 TASK 72-60-21-300-048 (REPAIR-048).

          2. For PNs 4B0400, 4B0402 and 4B0423:

            1. Between 0.7894 in. and 0.7933 in. (20.050 mm and 20.150 mm).

            1. Accept.

            2. More than 0.7933 in. (20.150 mm).

            1. Reject.

    58. SUBTASK 72-60-21-220-175 Examine the Gearbox Casing (02-050) Oil Scavenge Tube Bore at Location 28

    1. Refer to Figure.

      2. Diameter E.

        1. Between 1.4580 in. to 1.4600 in. (37.033 mm to 37.084 mm).

        1. Accept.

        2. More than Step.

        1. Repair, VRS5710 TASK 72-60-21-300-058 (REPAIR-058).

    59. Figure: Locations - Gearbox Casing Surfaces

    Locations - Gearbox Casing Surfaces

    Figure: Locations - Gearbox Casing

    Locations - Gearbox Casing

    Figure: Locations - Gearbox Casing

    Locations - Gearbox Casing

    Figure: Locations - Gearbox Casing

    Locations - Gearbox Casing

    Figure: Locations - Gearbox Casing

    Locations - Gearbox Casing

    Figure: Gearbox Casing W System

    Gearbox Casing W System

    Figure: Oil Nozzle Bore Locations - Gearbox Casing

    Oil Nozzle Bore Locations - Gearbox Casing

    Figure: Location of Crank Cover Studs/Holes

    Location of Crank Cover Studs/Holes

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedural step. (20VF829)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:X111X
Enterprise Name:N/A – DELETED CONSUMABLE MATERIAL
Manufacturer Code:X222X
Enterprise Name:N/A – REFER TO APPLICABLE COMAT SUFFIX
Manufacturer Code:X111X
Supply Number:CoMat 01-001
Type:sp01
Supply Short Name:CoMat 01-001 SOLVENT, DELETED
Supply Name:CoMat 01-001 SOLVENT, DELETED
Specification Groups:
Doc NumberType
wiring harnesses. Where CoMat 01‐001 is specified to clean mechanical components, use one or more of the solvents that SPM TASK 70‐11‐26‐300‐503 specifies as applicable.DELETED. Where CoMat 01‐001 is specified to clean electrical contacts or wiring harnesses, use one or more of the solvents that SPM TASK 70‐11‐57‐110‐501 specifies to clean electrical contacts or
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:X222X
Supply Number:CoMat 06-063
Type:sp01
Supply Short Name:CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)
Supply Name:CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐063 letter suffix material with other CoMat 06‐063 letter suffix materials. Where CoMat 06‐063 is specified with no suffix, use one of the CoMat 06‐063 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:FPI Inspection station
Tool Name:FPI Inspection station