TASK 79-22-41-300-043 Oil Scavenge Pump - Related Parts - Repair The Strainer Seat By Bushing In The Oil Scavenge Pump, Repair-043 (VRS5380)

DMC:V2500-A0-79-22-4100-05A-664A-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 79-22-41-300-043 Oil Scavenge Pump - Related Parts - Repair The Strainer Seat By Bushing In The Oil Scavenge Pump, Repair-043 (VRS5380)

Effectivity

FIG/ITEM

PART NO.

01-690

4B7107

01-690

4B7349

Material of component

PART IDENT

SYMBOL

MATERIAL

Oil scavenge pump

A357-T61 (AMS 4219)

Bushing

AA2024-T3 (AMS 4152K)

General

Price and availability - none

The practices and processes referred to in the procedure by the TASK number are in the SPM.

To identify the consumable materials, refer to the PCI.

Repair parts

FIG/ITEM

PART NO

PART IDENT

QTY

01-708

4L7014

Bushing

1

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Workshop Inspection EquipmentLOCALWorkshop Inspection Equipment
Grinding MachineLOCALGrinding Machine
Magnifying glassLOCALMagnifying glass
OvenLOCALOven
FreezerLOCALFreezer
Arbor PressLOCALArbor press
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 79-22-41-320-083 Machine the Strainer Seat in the Oil Scavenge Pump

    1. Refer to Figure.

      2. Machine the gearbox scavenge tube seat.

      1. The diameter of the bore must be between 1.4157 and 1.4173 in. (35.960 and 36.000 mm) after removal of the damage.

      2. The true position of the bore must be within 0.0400 in. (0.1000 mm) FIR in relation to holes C index 1.

      3. Bore surface rough must be 63 microin. (1.6 micron).

    2. SUBTASK 79-22-41-220-177 Examine the Oil Scavenge Pump

      1. Inspect the scavenge pump for cracks in locality of the gearbox scavenge tube seat.

    3. SUBTASK 79-22-41-330-085 Apply the Chromate Conversion Coating

    1. Apply the chromate conversion coating to the machined surfaces. Refer to SPM TASK 70-38-02-300-503.

    4. SUBTASK 79-22-41-350-088 Install the Bushing

    1. Refer to Figure.

    2. CAUTION

      MAKE SURE THAT THE LEAD IN CHAMFER OF THE BUSHING POINTS AWAY FROM THE DRIFT.

      Install the bushing to drift

      3. WARNING

        DO NOT TOUCH THE HOT PARTS WITHOUT PROTECTIVE GLOVES.

        WARNING

        HOT PARTS CAN CAUSE REDDENING AND BLISTERING OF THE SKIN IF THE HANDS ARE NOT PROTECTED.

        WARNING

        IMMERSE THE CONTACTED AREA IN COLD WATER FOR 10 MINUTES IF THE SKIN IS BURNED. IMMEDIATELY GET THE MEDICAL ATTENTION IF PAIN OR BLISTERING PERSISTS.

        Increase the temperature of the scavenge pump and/or decrease the temperature of the assembled drift and bushing.

      1. Use an Oven and/or a Freezer.

      2. Do not increase the temperature of the scavenge pump above 284 deg F (140 deg C)

      3. Do not increase the temperature of the assembled drift and bushing below minus 58 deg F (minus 50 deg C).

      4. NOTE

        The difference in temperature between the parts must be 248 deg F (120 deg C).

        Remove the scavenge pump from the Oven and/or the assembled drift and bushing from Freezer.

      1. Use protective gloves.

      5. CAUTION

        INSTALL BUSHING IN MACHINED BORE IMMEDIATELY AFTER REMOVAL FROM FREEZER, OTHERWISE BUSHING CANNOT BE CORRECTLY INSTALLED

        Install the bushing into machined bore.

      1. Use drift and an Arbor Press.

      2. Give sufficient back-up support at bushing bore area to prevent scavenge pump distortion when you install the bushing.

    6. Let the parts get the room temperature

    7. Remove the drift.

    5. SUBTASK 79-22-41-320-084 Machine the Inner Diameter of the Bushing

    1. Refer to Figure.

      2. Machine the inner diameter of the bushing.

      1. The last dimension of the inner diameter must be between 1.2618 and 1.2638 in. (32.0500 and 32.1000 mm).

      2. The true position of the diameter must be within 0.0200 in. (0.500 mm) FIR in relation holes C, index 1.

      3. Bore surface rough must be 63 microin. (1.6 micron). Chamfer where necessary.

    6. SUBTASK 79-22-41-330-087 Apply the Chromate Conversion Coating

    1. Apply the chromate conversion coating to the machined surface of the bushing. Refer to SPM TASK 70-38-02-300-503.

    7. SUBTASK 79-22-41-350-089 Record the Repair

      1. Vibroengrave 'VRS5380' adjacent to the part number.

      1. Remove the metal lifted by marking.

    8. Figure: Repair details and dimension

    Repair details and dimension

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Arbor press
Tool Name:Arbor Press
Manufacturer Code:LOCAL
Tool Number:Freezer
Tool Name:Freezer
Manufacturer Code:LOCAL
Tool Number:Grinding Machine
Tool Name:Grinding Machine
Link not Found
Manufacturer Code:LOCAL
Tool Number:Oven
Tool Name:Oven
Link not Found
Link not Found