TASK 79-21-41-200-405 Oil Pressure Pump/Filter Housing - Related Parts - Examine The Casing Assembly, Inspection-005

DMC:V2500-A0-79-21-4100-04A-300A-C|Issue No:002.00|Issue Date:2015-02-01

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 79-21-41-200-405 Oil Pressure Pump/Filter Housing - Related Parts - Examine The Casing Assembly, Inspection-005

Effectivity

FIG/ITEM

PART NO.

01-750

4A7083

01-750

4A7089

01-750

4A7304

01-750

4A7304A

General

CAUTION

THE TWO ITEMS (COVER ASSEMBLY AND CASING ASSEMBLY) THAT SHAPE THE OIL PUMP CASING ASSEMBLY MUST NOT BE SEPERATED. MAKE SURE THAT THE TWO ITEMS HAVE IDENTICAL SERIAL NUMBERS BEFORE AND AFTER INSPECTION.

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

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 parts must be visually examined for damage, corrosion and wear. Any defects that are not identified in the procedure must be referred to IAE.

Do dimensional checks only if the visual checks or some other condition makes it necessary.

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 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 equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 79-21-41-230-052 Do a Crack Test on the Casing Assembly (01-750) (Fluorescent Penetrant)

    1. Clean the parts. Refer to Cleaning-000 TASK 79-21-41-100-400.

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

        1. Casing Assembly. Refer to SPM TASK 70-23-01-230-501.

          1. Cracked.

          1. Reject.

          2. Through porosity.

          1. Reject.

    2. SUBTASK 79-21-41-220-058 Examine the Casing Assembly (01-750) All Areas

      1. Evident cracks.

      1. Reject.

    3. SUBTASK 79-21-41-220-059 Examine the Casing Assembly (01-750) Rough Surfaces at Location 1

    1. Refer to Figure.

      2. Nicked, scored, dented or scratched.

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

        1. Accept.

        2. More than Step.

        1. Repair VRS5305, (Repair-003) TASK 79-21-41-300-003.

    4. SUBTASK 79-21-41-220-060 Examine the Casing Assembly (01-750) Machined not Seal Surfaces at Location 2

    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 VRS5305, (Repair-003) TASK 79-21-41-300-003.

    5. SUBTASK 79-21-41-220-061 Examine the Casing Assembly (01-750) Machined Seal Surfaces at Location 3

    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 surfaces.

        1. Accept.

        2. More than Step.

        1. Repair VRS5305, (Repair-003) TASK 79-21-41-300-003.

    6. SUBTASK 79-21-41-220-062 Examine the Casing Assembly (01-750) Protective Finish

      1. Light corrosion or pitting.

      1. Repair VRS5306, (Repair-004) TASK 79-21-41-300-004.

    7. SUBTASK 79-21-41-220-063 Examine the Casing Assembly (01-750) Studs/Lock-Rings

      1. Perpendicularity.

        1. More than 0.0138 in. (0.350 mm) each 3.937 in. (100 mm).

        1. Repair VRS5307, (Repair-007) TASK 79-21-41-300-007.

        2. Thread damage or missing.

        1. Repair VRS5307, (Repair-007) TASK 79-21-41-300-007.

    8. SUBTASK 79-21-41-220-064 Examine the Casing Assembly (01-750) Helicoil Insert

      1. No movement is permitted. Loose, missing or internal thread damage.

      1. Repair VRS5308, (Repair-008) TASK 79-21-41-300-008.

    9. SUBTASK 79-21-41-220-066-A00 Examine the Casing Assembly (01-750) Bush A at Location 1 (Pre SBE 79-0071)

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 0.8673 and 0.8679 in. (22.030 and 22.045 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41- 300-010**.

      3. Perpendicularity.

        1. Not more than 0.0010 in. (0.025 mm) FIR in relation to surface F.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      4. Concentricity.

        1. Not more than 0.0004 in. (0.01 mm) FIR in relation to surface G.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

    10. SUBTASK 79-21-41-220-066-B00 Examine the Casing Assembly (01-750) Bush A at Location 1 (SBE 79-0071)

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 0.8871 and 0.8876 in. (22.530 and 22.545 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      3. Perpendicularity.

        1. Not more than 0.0010 in. (0.025 mm) FIR in relation to surface F.

        1. Accept.

        2. More than Step.

        1. Repair , (Repair-010) 79-21-41-300-010.

      4. Concentricity.

        1. Not more than 0.0004 in. (0.010 mm) FIR in relation to surface G.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41- 300-010**.

    11. SUBTASK 79-21-41-220-067-A00 Examine the Casing Assembly (01-750) Bush B at Location 2 (Pre SBE 79-0071)

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 0.8673 and 0.8679 in. (22.030 and 22.045 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      3. Perpendicularity.

        1. Not more than 0.0010 in. (0.025 mm) FIR in relation to surface F.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      4. True position.

        1. In a diameter of 0.0010 in. (0.025 mm) FIR in relation to points X and Y.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

    12. SUBTASK 79-21-41-220-067-B00 Examine the Casing Assembly (01-750) Bush B at Location 2 (SBE 79-0071)

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 0.8871 and 0.8876 in. (22.530 and 22.545 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      3. Perpendicularity.

        1. Not more than 0.0010 in. (0.025 mm) FIR in relation to surface F.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      4. True position.

        1. In a diameter of 0.0010 in. (0.025 mm) FIR in relation to points X and Y.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

    13. SUBTASK 79-21-41-220-068-A00 Examine the Casing Assembly (01-750) Bush C at Location 3 (Pre SBE 79-0071)

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 0.8673 and 0.8679 in. (22.030 and 22.045 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      3. Perpendicularity.

        1. Not more than 0.0010 in. (0.025 mm) FIR in relation to surface F.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      4. True position.

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

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-31-300-010**.

    14. SUBTASK 79-21-41-220-068-B00 Examine the Casing Assembly (01-750) Bush C at Location 3 (SBE 79-0071)

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 0.8871 and 0.8876 in. (22.530 and 22.545 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      3. Perpendicularity.

        1. Not more than 0.0010 in. (0.025 mm) FIR in relation to surface F.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      4. True position.

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

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-31-300-010**.

    15. SUBTASK 79-21-41-220-069-A00 Examine the Casing Assembly (01-750) Bush D at Location 4 (Pre SBE 79-0071)

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 0.8673 and 0.8679 in. (22.030 and 22.045 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      3. Perpendicularity.

        1. Not more than 0.0010 in. (0.025 mm) FIR in relation to surface F.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      4. Concentricity.

        1. Not more than 0.0004 in. (0.010 mm) FIR in relation to surface E.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

    16. SUBTASK 79-21-41-220-069-B00 Examine the Casing Assembly (01-750) Bush D at Location 4 (SBE 79-0071)

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 0.8871 and 0.8876 in. (22.530 and 22.545 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      3. Perpendicularity.

        1. Not more than 0.0010 in. (0.025 mm) FIR in relation to surface F.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

      4. Concentricity.

        1. Not more than 0.0004 in. (0.010 mm) FIR in relation to surface E.

        1. Accept.

        2. More than Step.

        1. Repair VRS5310, (Repair-010) 79-21-41-300-010**.

    17. SUBTASK 79-21-41-220-079 Examine the Casing Assembly (01-750) Cover Seat at Location 10

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 1.4173 and 1.4189 in. (36.000 and 36.040 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5320, (Repair-020) TASK 79-21-41-300-020.

    18. SUBTASK 79-21-41-220-134 Examine the Casing Assembly (01-750) Support Filter on Not Seal Surfaces Location 11

    1. Refer to Figure.

      2. Nicked, scored, dented or scratched.

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

        1. Accept.

        2. More than Step.

        1. Repair VRS5620, (Repair-034) TASK 79-21-41-300-034.

    19. SUBTASK 79-21-41-220-135 Examine the Casing Assembly (01-750) Support Filter Mating Surface at Location 12

    1. Refer to Figure.

      2. Wear.

        1. All quantity all length not more than 0.004 in. (0.10 mm) in depth.

        1. Accept.

        2. More than Step.

        1. Repair VRS5620, (Repair-034) TASK 79-21-41-300-034.

    20. SUBTASK 79-21-41-220-136 Examine the Casing Assembly (01-750) Support Filter On Seal Surface at Location 13

    1. Refer to Figure.

      2. Nicked, scored, dented or scratched.

        1. All quantity all length not more than 0.004 in. (0.1 mm) in depth.

        1. Accept.

        2. More than Step.

        1. Repair VRS5620, (Repair-034) TASK 79-21-41-300-034.

    21. SUBTASK 79-21-41-220-082 Examine the Casing Assembly (01-750) Oil Filter Cover Seat at Location 14

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 3.9768 and 3.9768 in. (101.010 and 101.050 mm).

        1. Accept.

        2. More than Step

        1. Repair VRS5323, (Repair-023) TASK 79-21-41-300-023.

    22. SUBTASK 79-21-41-220-083 Examine the Casing Assembly (01-750) Oil Pump Mating Surface at Location 15

    1. Refer to Figure.

      2. Parallelism.

        1. Not more than 0.0010 in. (0.025 mm) FIR in relation to surface K.

        1. Accept.

        2. More than Step.

        1. Repair VRS5324, (Repair-024) TASK 79-21-41-300-024.

      3. Nicked, scored, dented or scratched.

        1. Not more than 0.008 in. (0.20 mm) in depth.

        1. Accept.

        2. More than Step.

        1. Repair VRS5305, (Repair-003) TASK 79-21-41-300-003.

      4. Nicked, dented corners.

        1. Any quantity, any length not more than 0.10 in. (2.5 mm) in depth after removal of high metal.

        1. Accept.

        2. More than Step.

        1. Reject.

    23. SUBTASK 79-21-41-220-084 Examine the Casing Assembly (01-750) Strainer Seat at Location 16

    1. Refer to Figure.

      2. Inner diameter.

        1. Between 1.7327 and 1.7343 in. (44.010 and 44.050 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5325, (Repair-025) TASK 79-21-41-300-025.

    24. SUBTASK 79-21-41-220-085 Examine the Casing Assembly (01-750) Piloting Diameter at Location 17

    1. Refer to Figure.

      2. Diameter.

        1. Between 5.0378 and 5.0362 in. (127.960 and 127.920 mm).

        1. Accept.

        2. More than Step.

        1. Repair VRS5326, (Repair-026) TASK 79-21-41-300-026.

      3. Nicked, scored, dented or scratched.

        1. Not more than 0.008 in. (0.20 mm) in depth.

        1. Accept.

        2. More than Step.

        1. Repair VRS5305, (Repair-003) TASK 79-21-41-300-003.

    25. SUBTASK 79-21-41-220-187 Examine the Casing Assembly (01-750) Gear Seats at Location 18

    1. Refer to Figure

      2. Cavitation damage.

        NOTE

        Usually the cavitation damage on the flat surfaces is found near the oil inlet port.The damage is an erosion or missing material in the bottom corners of the gear seats and the cover surface.

        1. Not more than 0.07 in. (1.8 mm) in depth.

        1. Repair VRS5686, (Repair-035) 79-21-41-300-035**.

        2. More than Step.

        1. Reject.

      3. Scored or nicked.

        NOTE

        Usually scores are found on the cylindrical surfaces of the gear seats.

        1. Any quantity, not more than 0.008 in. (0.20 mm) in depth.

        1. Accept.

        2. Any quantity between 0.008 in. (0.20 mm) and 0.07 in. (1.8 mm) in depth.

        1. Repair VRS5686, (Repair-035) 79-21-41-300-035**.

        3. More than Step.

        1. Reject.

    26. SUBTASK 79-21-41-220-189 Examine the Casing Assembly (01-750) Relief Valve Port at Location 19

    1. Refer to Figure.

      2. Cavitation damage.

        NOTE

        Usually the cavitation damage is found on the bottom surface of the port. The damage is an erosion or missing material.

        1. Not more than 0.040 in. (1.02 mm) in depth.

        1. Repair VRS5686, (Repair-035) 79-21-41-300-035**.

        2. More than Step

        1. Reject.

    27. Figure: Locations on the Oil Pump Casing Assembly

    Locations on the Oil Pump Casing Assembly

    Figure: Locations on the Oil Pump Casing Assembly

    Locations on the Oil Pump Casing Assembly

    Figure: Locations on the Oil Pump Casing Assembly

    Locations on the Oil Pump Casing Assembly

    Figure: Locations on the Oil Pump Casing Assembly

    Locations on the Oil Pump Casing Assembly

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Update PN (EC 14VF868)

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