TASK 79-11-41-200-401-B00 Oil Tank - Related Parts - Examine The Deaerator Assembly, Inspection-001

DMC:V2500-A0-79-11-4100-00B-300A-C|Issue No:002.00|Issue Date:2016-11-01

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-B00 Oil Tank - Related Parts - Examine The Deaerator Assembly, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-240

4B7199

01-240

4B7381

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.

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.

References

Refer to 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 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 79-11-41-230-062 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.

            1. Cracked

            1. Reject

            2. Trough porosity

            1. Reject

    2. SUBTASK 79-11-41-220-051 Examine the Deaerator Assembly, All Areas

      1. Evident cracks

      1. Reject

    3. SUBTASK 79-11-41-220-101 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 TASK 79-11-41-300-001 (REPAIR-001).

    4. SUBTASK 79-11-41-220-102 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 TASK 79-11-41-300-001 (REPAIR-001).

    5. SUBTASK 79-11-41-220-103 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, VRS5206 TASK 79-11-41-300-001 (REPAIR-001).

    6. SUBTASK 79-11-41-220-104 Examine the Deaerator Assembly Protective Finish

      1. Light corrosion or pitting.

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

    7. SUBTASK 79-11-41-220-105 Examine the Deaerator Assembly Helicoil Inserts

      1. Loose, missing or internal thread damage.

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

    8. SUBTASK 79-11-41-220-106 Examine the Deaerator Assembly Pressurizing Valve Seat at Location 4

    1. Refer to Figure.

      2. Diameter.

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

        1. Accept

        2. More than Step

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

    9. SUBTASK 79-11-41-220-107 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 TASK 79-11-41-300-009 (REPAIR-009).

    10. SUBTASK 79-11-41-220-108 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 TASK 79-11-41-300-011 (REPAIR-011).

    11. SUBTASK 79-11-41-220-109 Examine the Deaerator Assembly Piloting Diameter at Location 7

    1. Refer to Figure.

      2. Diameter

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

        1. Accept

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

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

    12. SUBTASK 79-11-41-220-110 Examine the Deaerator Assembly Cover Seat at Location 8 (Pre SBE 79-0025)

    1. Refer to Figure.

      2. Diameter

        1. Between 1.3409 in. and 1.3394 in. (34.06 mm and 34.02 mm)

        1. Accept

        2. Less than 1.3394 in. (34.02 mm)

        1. Repair, VRS5425 TASK 79-11-41-300-033 (REPAIR-033).

      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, VRS5425 TASK 79-11-41-300-033 (REPAIR-033).

    13. SUBTASK 79-11-41-220-111 Examine the Deaerator Assembly Tube Seat at Location 10

    1. Refer to Figure.

      2. Diameter

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

        1. Accept

        2. More than 1.46 in. (37.083 mm)

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

    14. SUBTASK 79-11-41-220-112 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 TASK 79-11-41-300-015 (REPAIR-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
Change Type:

Revised the subtask title to add pre SBE 79-0025. (14VF877)