TASK 72-00-32-220-003-B00 LPC/Intermediate Case Module - Examine The Module Rear Face At Interface C-32, Inspection-003

DMC:V2500-A5-72-00-3200-02C-310A-B|Issue No:002.00|Issue Date:2017-11-01

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

V2500-A5

Common Information

TASK 72-00-32-220-003-B00 LPC/Intermediate Case Module - Examine The Module Rear Face At Interface C-32, Inspection-003

General

The word Reject is used after an interface inspection statement to show that a higher level inspection and possible repair to the damaged part is necessary.

Do the higher level inspection procedure as found in the applicable Chapter/Section/Subject of this manual on the damaged part(s). It is not necessary to do the higher level inspection on parts that are serviceable to the interface inspection standard.

Refer to TASK 72-00-00-200-000 (Examine the modular/non-modular interfaces), (INSPECTION-000) before you do this TASK.

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

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Portable MultimeterLOCALPortable Multimeter

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-019 WATERPROOF SILICON CARBIDELOCALCoMat 05-019

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-00-32-220-112 Visually Examine the Front Engine Mount Tube at Location 1

    1. Refer to Figure.

      2. Scored.

      1. Reject.

      3. Cracked.

      1. Reject.

    2. SUBTASK 72-00-32-220-113 Visually Examine the Thrust Mount Brackets at Location 2

    1. Refer to Figure.

      2. Scored

      1. Reject

      3. Cracked

      1. Reject

    3. SUBTASK 72-00-32-220-114 Visually Examine the Oil/Air Transfer Tube Connections at location 3

    1. Refer to Figure.

      2. Burrs

      1. Reject

      3. Blockage in oil passageway

      1. Reject

    4. SUBTASK 72-00-32-220-115 Examine the Fan Speed/Trim Balance Harness Terminal Block at Location 4 (Pre SBE 72-0508 and SBE 72-0508)

    1. Refer to Figure.

      2. Loose

      1. Reject

      3. Cracked

      1. Reject

      4. Do the loop resistance check between terminal number 1 and 2, 3 and 4, 5 and 6, 7 and 8.

      1. Measure each resistance and room temperature using multimeter.

      2. Calculate the corrected resistance by the subsequent formula.

        Rc = (234.5 + 20)/(234.5 + T) x Rm.

        Rc: Corrected Resistance (ohms).

        T: Measured Room Temperature (deg C).

        Rm: Measured Resistance (ohms).

        3. NOTE

          Polish the measure point of the terminals to remove oxide on the terminals before the loop resistance check is examined. Use CoMat 05-019 WATERPROOF SILICON CARBIDE .

          Pre SBE 72-0508: Check the resistance.

          1. Loop resistance between terminal number 1 and 2, 3 and 4, 5 and 6.

            1. If the corrected resistance Rc is between 75.0 and 101.0 ohms

            1. Accept

            2. Other than Step

            1. Reject

          2. Loop resistance between terminal number 7 and 8.

            1. If the corrected resistance Rc is between 75.0 and 96.0 ohms

            1. Accept

            2. Other than Step

            1. Reject

        4. NOTE

          Polish the measure point of the terminals to remove oxide on the terminals before the loop resistance check is examined. Use CoMat 05-019 WATERPROOF SILICON CARBIDE .

          SBE 72-0508: Check the resistance.

          1. Loop resistance between terminal number 1 and 2, 3 and 4, 5 and 6.

            1. If the corrected resistance Rc is between 37.0 and 57.0 ohms

            1. Accept

            2. Other than Step

            1. Reject

          2. Loop resistance between terminal number 7 and 8.

            1. If the corrected resistance Rc is between 25.0 and 45.0 ohms

            1. Accept

            2. Other than Step

            1. Reject

    5. SUBTASK 72-00-32-220-116 Visually Examine the Bleed Valve Actuator Rods at Location 5

    1. Refer to Figure.

      2. Rear end holes.

        1. Scored

        1. Reject

    6. SUBTASK 72-00-32-220-117 Visually Examine the Fan Frame Inner Struts at Location 6

    1. Refer to Figure.

      2. Welding line or heat damaged area on the trailing edge sheet metal.

        1. Cracked.

        1. Reject.

      3. Transverse to the trailing edge.

        1. Cracked.

        1. Reject.

    7. SUBTASK 72-00-32-220-118 Visually Examine the Brush Seal at Location 7

    1. Refer to Figure.

      2. Frayed.

      1. Reject.

    8. SUBTASK 72-00-32-220-119 Visually Examine the HP Compressor Front Shaft Curvic Teeth at Location 8

    1. Refer to Figure.

      2. Examine the HP compressor front shaft.

        1. Curvic teeth.

          1. Galled or damaged.

          1. Reject.

    9. SUBTASK 72-00-32-220-120 Visually Examine the Fan Case Rear Panel at Location 9

    1. Refer to Figure and Figure.

      2. Examine the fan case liner panels for cracks, nicks, scores, scratches and damage holes (material that is not there).

        1. If they are cracked, not more than 6 in. (152.4 mm) in length.

        1. Repair, VRS1809 TASK 72-32-87-300-003 (REPAIR-003).

        2. If they have nicks, scores, scratches, not more than 0.20 in. (0.5 mm) in depth.

        1. Accept.

        3. If they have nicks, scores or scratches more than in Step.

        1. Repair, VRS1809 TASK 72-32-87-300-003 (REPAIR-003).

        4. If they have damaged holes (material that is not there), not more than 2.0 in. (50.8 mm) diameter.

        1. Repair, VRS1809 TASK 72-32-87-300-003 (REPAIR-003).

        5. If they have damages that are not repairable.

        1. Reject.

      3. Examine the inner surface of the fan case liner front panels for erosion.

        1. Not more than 0.0098 in. (0.25 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Repair, VRS1804 TASK 72-32-87-300-004 (REPAIR-004).

      4. Examine the inner surface of the fan case liner rear panels for erosion.

        1. Not more than 0.0098 in. (0.25 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Repair, VRS1803 TASK 72-32-87-300-005 (REPAIR-005).

    10. SUBTASK 72-00-32-220-121 Dimensionally Examine the Fan Exit Guide Vane at Location 10

    1. Refer to Figure.

      2. Step.

        1. Not more than 0.10 in. (2.54 mm).

        1. Accept.

        2. More than in Step.

        1. Reject.

    11. SUBTASK 72-00-32-220-122 Visually Examine the Screen at Location 11

      CAUTION

      IF THE SCREEN HAS A HOLE IN IT, A PLASTIC COVER MUST BE INSTALLED OVER THE DUCT INLET WHEN MAINTENANCE WORK IS BEING PERFORMED IN THE SURROUNDING AREA. A FLAG MUST BE USED WHEN THE PLASTIC COVER IS USED TO REMIND MAINTENANCE PERSONNEL TO REMOVE THE COVER BEFORE ATTEMPTING TO START THE ENGINE.

    1. Refer to Figure and Figure.

      2. Visually examine the net.

        1. Torn

        1. Accept, provided all loose fibers are removed.

      3. Visually examine the frame.

        1. Scattered damage.

        1. Accept.

        2. Cracked.

        1. Reject.

    12. SUBTASK 72-00-32-220-123 Visually Examine the Mount Tube Stopper at Location 12

    1. Refer to Figure.

      2. Any damage.

      1. Reject.

    13. SUBTASK 72-00-32-220-187 Visually Examine the Sealing Strip at Location 13

      1. Refer to Figure and Figure.

        1. Crack or tear.

          1. Circumferential crack or tear not more than total accumulative length 1.00 in. (25.4 mm).

          1. Accept.

          2. If the number of cracks or tears in radial direction are not more than 2.

          1. Accept.

          3. More than in Step and/or Step.

          1. Reject.

    14. SUBTASK 72-00-32-220-016 Visually Examine the Thrust Mount Bracket Bolts at Location 14

    1. Refer to Figure.

      2. Corroded.

      1. Reject.

    15. Figure: Locations at Interface C-32

    Sheet 1

    Legend
    Locations at Interface C-32

    Sheet 1

    Close

    Figure: Locations at Interface C-32

    Sheet 2

    Legend
    Locations at Interface C-32

    Sheet 2

    Close

    Figure: Locations at Interface C-32

    Locations at Interface C-32

    Figure: Inspection of the Screen

    Inspection of the Screen

    Figure: Fan Case Liner Panel and Panel Rubber Seal

    Fan Case Liner Panel and Panel Rubber Seal

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure to correct limits and added new subtask. (97VJ801H and 97VJ801I)

Change Type:

Corrected subtask information from 72-32-03 to 72-00-32. (Editorial)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:1E1X8
Supply Number:CoMat 05-019
Type:sp01
Supply Short Name:CoMat 05-019 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-019 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/31 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 400 (ANSI B74.18)
JCR-184 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
LOCAL
K6835
Manufacturer Code:LOCAL
Tool Number:Portable Multimeter
Tool Name:Portable Multimeter