TASK 79-11-41-200-401-A00 Oil Tank - Related Parts - Examine The Deaerator Assembly, Inspection-001

DMC:V2500-A0-79-11-4100-00A-300A-C|Issue No:001.00|Issue Date:2014-05-01

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 79-11-41-200-401-A00 Oil Tank - Related Parts - Examine The Deaerator Assembly, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-240

4B7109

General

This TASK gives the procedure for the inspection of the deaerator assembly. For the other parts of the oil tank assembly, refer to (Inspection-000) TASK 79-11-41-200-400.

The policy that is necessary for inspection is given in SPM TASK 70-20-01-200-501.

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 not discard any part until you are sure there are no repairs available. Refer to the instructions in the 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 the SPM for data on these items.

Definitions of Damage SPM TASK 70-02-02-350-501.

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

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 79-11-41-230-051 Do a Crack Test on the Deaerator Assembly (Fluorescent Penetrant)

    1. Clean the parts. Refer to Cleaning-000 TASK 79-11-41-100-400.

      2. Do the test for cracks on the part that is given below.

        1. Deaerator Assembly.

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

        2. Cracked.

        1. Reject.

        3. Trough porosity.

        1. Reject.

    2. SUBTASK 79-11-41-220-137 Examine the Deaerator Assembly, All Areas

      1. Evident cracks.

      1. Reject.

    3. SUBTASK 79-11-41-220-052 Examine the Deaerator Assembly Machined Seal Surfaces at Location 1

    1. Refer to Figure.

      2. Nicked, scored, dented or scratched.

        1. 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, VRS5206 (Repair-001) TASK 79-11-41-300-001.

    4. SUBTASK 79-11-41-220-053 Examine the Deaerator Assembly Machined Surfaces at Location 2

    1. Refer to Figure.

      2. 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, VRS5206 (Repair-001) TASK 79-11-41-300-001.

    5. SUBTASK 79-11-41-220-054 Examine the Deaerator Assembly Rough Surfaces at Location 3

    1. Refer to Figure.

      2. Nicked, scored, dented or scratched.

        1. Not more than 0.0138 in. (0.35 mm) in depth.

        1. Accept.

        2. More than Step.

        1. Repair, VRS52060 (Repair-001) TASK 79-11-41-300-001.

    6. SUBTASK 79-11-41-220-055 Examine the Deaerator Assembly Protective Finish

      1. Light corrosion or pitting.

      1. Repair, VRS5207 (Repair-002) TASK 79-11-41-300-002.

    7. SUBTASK 79-11-41-220-056 Examine the Deaerator Assembly Helicoil Inserts

      1. Loose, missing or internal thread damage.

      1. Repair, VRS5208 (Repair-007) TASK 79-11-41-300-007.

    8. SUBTASK 79-11-41-220-057 Examine the Deaerator Assembly Pressurizing Valve Seat at Location 4

    1. Refer to Figure.

      2. Diameter.

        1. Between 1.208 and 1.21 in. (30.684 and 30.734 mm).

        1. Accept.

        2. More than Step.

        1. Repair, VRS5209 (Repair-008) TASK 79-11-41-300-008.

      3. True position.

        1. Not more than 0.0295 in. (0.75 mm) in relation to planes A, B, C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5209 (Repair-008) TASK 79-11-41-300-008.

    9. SUBTASK 79-11-41-220-058 Examine the Deaerator Assembly Pressurizing Valve Mating Surface at Location 5

    1. Refer to Figure.

      2. Perpendicularity.

        1. Not more than 0.002 in. (0.05 mm) FIR in relation to surface D.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5210 (Repair-009) TASK 79-11-41-300-009.

    10. SUBTASK 79-11-41-220-059 Examine the Deaerator Assembly Mounting Face at Location 6

    1. Refer to Figure.

      2. Perpendicularity.

        1. Not more than 0.002 in. (0.05 mm) FIR in relation to surface B.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5216 (Repair-011) TASK 79-11-41-300-011.

    11. SUBTASK 79-11-41-220-060 Examine the Deaerator Assembly Piloting Diameter at Location 7

    1. Refer to Figure.

      2. Diameter.

        1. Between 6.498 and 6.496 in. (165.05 and 165 mm).

        1. Accept.

        2. Less than 6.496 in. (165 mm).

        1. Repair, VRS5215 (Repair-010) TASK 79-11-41-300-010.

    12. SUBTASK 79-11-41-220-138 Examine the Deaerator Assembly Prismalite Seat at Location 8

    1. Refer to Figure.

      2. Diameter.

        1. Between 1.258 and 1.254 in. (31.953 and 31.852 mm).

        1. Accept.

        2. Less than 1.254 in. (31.852 mm).

        1. Repair, VRS5213 (Repair-012) TASK 79-11-41-300-012.

      3. True position.

        1. Not more than 0.0295 in. (0.75 mm) in relation to planes A, B, C.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5213 (Repair-012) TASK 79-11-41-300-012.

    13. SUBTASK 79-11-41-220-063 Examine the Deaerator Assembly Tube Seat at Location 9

    1. Refer to Figure.

      2. Diameter.

        1. Between 1.458 and 1.46 in. (37.033 and 37.083 mm).

        1. Accept.

        2. More than 1.46 in. (37.083 mm).

        1. Repair, VRS5211 (Repair-014) TASK 79-11-41-300-014.

    14. SUBTASK 79-11-41-220-064 Examine the Deaerator Assembly Tube Mating Surfaces at Location 11

    1. Refer to Figure.

      2. Perpendicularity.

        1. Not more than 0.002 in. (0.05 mm) FIR in relation to surface L.

        1. Accept.

        2. More than Step.

        1. Repair, VRS5212 (Repair-015) TASK 79-11-41-300-015.

    15. Figure: Locations On The Deaerator Assembly

    Locations On The Deaerator Assembly

    Locations On The Deaerator Assembly

    Locations On The Deaerator Assembly

Requirements After Job Completion

Follow-On Conditions

NONE