TASK 72-00-00-200-012 Engine General - Examine (Borescope) The Hydraulic Pump Drive Gear Shroud, Inspection-012

DMC:V2500-A0-72-00-0000-02A-312A-B|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 72-00-00-200-012 Engine General - Examine (Borescope) The Hydraulic Pump Drive Gear Shroud, Inspection-012

General

This TASK gives the procedure for the borescope inspection of the hydraulic pump drive gear shroud. For the other inspections of the engine, refer to TASK 72-00-00-200-000 (INSPECTION/CHECK-000).

For standard torque data and procedure refer to TASK 70-41-00-400-501 and TASK 70-41-02-400-501.

Lubricate all threads and abutment faces of nuts and bolts with CoMat 10-077 APPROVED ENGINE OILS, unless other lubricants are referred to in the procedure.

For lockwire data and procedures, refer to TASK 70-42-05-400-501.

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variants refer to the IPC.

For all parts identified in a different Chapter/Section/Subject, the applicable Chapter/Section/Subject comes before the Fig/item number.

References

Refer to the SPM for data on these items.

Definition of Damage, TASK 70-02-02-350-501

Record and Control of the Lives of the Parts, TASK 70-05-00-220-501

Inspection of Parts, TASK 70-20-00-200-501

Some data on these is contained in this TASK. For more data on these items refer to the SPM.

Surface protection

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Flexible borescope (probe dia. 0.24 to 0.31 in. (6.0 to 8.0 mm) with view capability of 180 degrees up and down)LOCALFlexible Borescope

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-126 LOCKWIRELOCALCoMat 02-126
CoMat 10-077 APPROVED ENGINE OILSLOCALCoMat 10-077

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-00-00-610-051 Drain the External Gearbox

    1. Refer to Figure.

    2. Put a clean container below the external gearbox to catch the drained oil.

    3. Remove the magnetic chip detector (MCD). Refer to TASK 72-00-00-050-001 (REMOVAL-001).

      4. Remove the MCD housing Magnetic Chip Detector (79-22-45, 01-020).

      1. Remove and discard the lockwire.

      2. Unscrew and remove the MCD housing. Let the oil drain into a container.

      3. Remove and discard the seal ring Magnetic Chip Detector (79-22-45, 01-040) from the MCD housing.

    5. Remove the container and discard the drained oil.

    2. SUBTASK 72-00-00-040-051 Remove the Oil Nozzle

    1. Refer to Figure.

    2. Remove the nut and the washer which attach the oil nozzle Main Gearbox Assembly (72-60-10, 01-310) to the gearbox casing. Remove the oil nozzle from the seal below the mounting flange of the fuel pump. Remove and discard the packings.

    3. SUBTASK 72-00-00-220-051 Do a Borescope Inspection of the Hydraulic Pump Gear Shroud

    1. Refer to Figure.

      3. Examine the hydraulic shroud at the attaching flange for distortions and cracks.

        1. Distorted or cracked

        1. Replace the shroud

      4. Examine the shroud and the gear for clearance.

        1. The shroud is evenly centered on the gear

        1. Accept

        2. Uneven clearance, less than 1/4 of the cumulative clearance

        1. Replace the shroud

        3. Evidence of interference between the gear and the shroud

        1. Replace the shroud

    5. Remove the borescope equipment.

    4. SUBTASK 72-00-00-220-052 Install the Oil Nozzle

    1. Refer to: Figure.

    2. Install one of each Main Gearbox Assembly (72-60-10, 01-321 and Main Gearbox Assembly 72-60-10, 01-324) packing 1 off into the grooves of the oil nozzle.

    3. Install the oil nozzle into the seat below the mating flange of the fuel pump. Align the hole in the nozzle flange with the adjacent stud.

    4. Install the washer and the nut and torque to between 85 to 95 lbf.in (9.604 to 10.734 Nm).

    5. SUBTASK 72-00-00-440-051 Install the MCD Housing

    1. Refer to Figure.

    2. Install the new sealing ring Magnetic Chip Detector (79-22-45, 01-040) to the MCD housing.

    3. Lubricate the sealing ring, the mating face and the threads of the housing with CoMat 10-077 APPROVED ENGINE OILS.

    4. Install the MCD housing Magnetic Chip Detector (79-22-45, 01-020).

    5. Torque the MCD housing to between 160 to 180 lbf.in (18 to 20 Nm).

    6. Safety the MCD housing with CoMat 02-126 LOCKWIRE.

    7. Install the MCD. Refer to TASK 72-00-00-450-001 (INSTALLATION-001).

    6. SUBTASK 72-00-00-640-052 Fill the Oil Tank

    1. Fill the oil tank. Refer to TASK 71-00-00-600-002 (SERVICING-002).

    7. SUBTASK 72-00-00-790-051 Do a Dry Motor Leak Check

    1. Do a dry motor leak check. Refer to TASK 71-00-00-700-001 (TESTING-001).

    8. Figure: Magnetic chip detector

    Magnetic chip detector

    Figure: Oil nozzle

    Oil nozzle

    Figure: Inspect the hydraulic pump gear shroud

    Inspect the hydraulic pump gear shroud

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:K6835
Supply Number:CoMat 02-126
Type:sp01
Supply Short Name:CoMat 02-126 LOCKWIRE
Supply Name:CoMat 02-126 LOCKWIRE
Specification Groups:
Doc NumberType
DTD 189A, 0.028 TO 0.032 IN DIA
Suppliers:
ManufacturerRemarks
K6835
KB362
LOCAL
U06C8
Manufacturer Code:X333X
Supply Number:CoMat 10-077
Type:sp01
Supply Short Name:CoMat 10-077 APPROVED ENGINE OILS
Supply Name:CoMat 10-077 APPROVED ENGINE OILS
Specification Groups:
Doc NumberType
For V2500-A1/A5/D5 models - Refer to V2500 Service Bulletin ENG-79-0108
For V2500-E5 model - Refer to Service Bulletin E5-79-0001
Suppliers:
ManufacturerRemarks
X333X
Manufacturer Code:LOCAL
Tool Number:Flexible Borescope
Tool Name:Flexible borescope (probe dia. 0.24 to 0.31 in. (6.0 to 8.0 mm) with view capability of 180 degrees up and down)