TASK 72-00-60-050-003 External Gearbox Components - Remove The Oil Pressure Pump And Filter Assembly, Removal-007

DMC:V2500-A0-72-00-6050-04A-520A-B|Issue No:002.00|Issue Date:2019-11-01

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 72-00-60-050-003 External Gearbox Components - Remove The Oil Pressure Pump And Filter Assembly, Removal-007

General

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.

Discard all rubber seal rings, cotter pins and seal washers removed in this procedure.

Apply the approved penetrating oil before the removal of the threaded parts. Let the parts soak before removal. For approved oils and procedures, refer to SPM TASK 70-64-00-640-501.

Remove and discard the lockwire before parts are disconnected or removed.

Transportation covers/blanks must be installed immediately after the removal of components.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Container - Minimum capacity of about 10 USgal (38 l)LOCAL

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-00-60-050-098 Drain the Engine Oil System

    1. Refer to Figure.

      2. WARNING

        DO NOT GET ENGINE OIL ON YOUR SKIN FOR LONG PERIODS. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND IN TO YOUR BODY.
        TO LET THE TANK PRESSURE BLEED OFF, DO NOT REMOVE THE OIL TANK CAP FOR FIVE MINUTES AFTER THE ENGINE STOPS. THE HOT OIL IS DANGEROUS.

        CAUTION

        DO NOT LET THE ENGINE MOTOR WHEN THE OIL IS DRAINED.

        Drain the oil tank.

      1. Loosen the oil filler cap.

      2. Release and remove the drain oil plug ENGINE-MAIN GEARBOX CASE AND FITTINGS (72-60-21, 01-120) from the front flange of the main gearbox casing, below the oil pressure pump. Discard the packing from the plug.

      3. NOTE

        Let the engine oil drain for a minimum of 10 minutes.

        Drain the oil in to a container.

      3. Drain the external gearbox.

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

      2. Remove the Left-Hand Gearbox magnetic chip detector (MCD). Refer to TASK 72-00-00-050-001 (REMOVAL-001).

      3. Remove the MCD housing Magnetic Chip Detector (79-22-45, 01-120).

      4. Unscrew and remove the MCD housing. Discard the lockwire. Let the oil drain into a container.

      5. Remove and discard the seal ring Magnetic Chip Detector (79-22-45, 01-140) from the MCD housing.

      6. Repeat Step thru Step for the Right-Hand Gearbox magnetic chip detector and the Angle Gearbox magnetic chip detector.

      4. Drain the pressure oil filter.

      1. Release and remove the plugs from the bottom of the pressure filter. Drain the oil in to a container.

      2. Discard the packing from the plug.

    2. SUBTASK 72-00-60-050-099 Disconnect the Air Cooler (ACOC) Oil Supply Tube

    1. Refer to Figure.

    2. Remove the three bolts and disconnect the ACOC oil supply tube from the oil pressure pump.

    3. Drain the oil into a container.

    4. Discard the packing.

    3. SUBTASK 72-00-60-050-100 Remove the Oil Pressure Pump and Filter Assembly

    1. Refer to Figure.

    2. CAUTION

      HOLD THE WEIGHT OF THE OIL PRESSURE PUMP AND FILTER ASSEMBLY DURING THE REMOVAL OF THE NUTS.

      CAUTION

      MAKE SURE THAT THE SLEEVE AND THE STRAINER DO NOT FALL DURING THE REMOVAL OF THE OIL PRESSURE PUMP.

      Remove the six nuts and washers which attach the oil pressure pump to the front flange of the gearbox casing.

    3. CAUTION

      USE A DULL EDGE TOOL (IE. SMOOTH PUTTY KNIFE) TO SEPARATE THE PUMP FROM THE GEARBOX FLANGE. PAY ATTENTION TO THE PILOTING DIAMETER OF THE PUMP IN ORDER TO AVOID DAMAGE TO THE SEALING SURFACES.

      Remove the pressure pump and filter assembly from the gearbox casing.

    4. Remove the sleeve and the strainer.

    5. NOTE

      The parts of the oil pressure pump and filter assy must have their maintenance completed, as given in Component Maintenance Manual, Pub.ref. CMM-MECH V2500-1IA.

      Discard the packings.

    4. Figure: Drain oil plugs

    Drain oil plugs

    Figure: Oil pressure pump and filter assembly

    Oil pressure pump and filter assembly

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised drain procedure for external gearbox. (19VC301)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
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