TASK 72-00-60-050-004External Gearbox Components - Remove The No.4 Bearing Compartment Scavenge Valve, Removal-008

DMC:V2500-A0-72-00-6050-05A-520A-B|Issue No:002.00|Issue Date:2021-02-01

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 72-00-60-050-004External Gearbox Components - Remove The No.4 Bearing Compartment Scavenge Valve, Removal-008

General

This TASK gives the procedure to remove the No.4 bearing compartment scavenge valve from the engine.

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.

Discard all rubber seal rings removed in this procedure.

Remove and discard the lockwire before the tubes are disconnected.

The engine must be isolated from starting air supply, fuel supply and electrical power source while you do this procedure.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Container - minimum capacity one US galLOCALContainer - minimum capacity one US gal
IAE 1R18003 Wrench0AM53IAE 1R180031

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-00-60-050-081 Disconnect the Electrical Connector and the Air Tube from the No.4 Bearing Compartment Scavenge Valve

    1. Refer to Figure.

    2. Disconnect the electrical connector 4006EN-A from the valve.

    3. NOTE

      Carefully cut the lockwire not to loosen the bolts of the valve.

      Cut and discard the lockwire which is used to safety the air tube AIR-BEARING COMPARTMENT COOLING & SEALING TUBES (75-22-49, 07-100) and the oil tube Engine Scavenge Oil Tubes (79-22-49, 04-500) to the two bolts of the valve.

    4. Disconnect the air tube AIR-BEARING COMPARTMENT COOLING & SEALING TUBES (75-22-49, 07-100) from the valve.

    2. SUBTASK 72-00-60-050-082 Disconnect the Oil Tube from the Valve

    1. Refer to Figure.

    2. WARNING

      DO NOT LET ENGINE OIL STAY ON YOUR SKIN FOR A LONG TIME. FLUSH THE OIL FROM YOUR SKIN WITH WATER. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND IN TO YOUR BODY.

      CAUTION

      DO NOT LET THE ENGINE OIL FALL ON THE ENGINE. UNWANTED OIL MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE OIL CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.
      DO NOT PUT OIL THAT HAS BEEN DRAINED FROM THE ENGINE BACK IN TO THE OIL SYSTEM.

      Disconnect the oil tube OIL-SCAVENGE OIL TUBES-ENGINE (79-22-49, 05-100) from the oil tube Engine Scavenge Oil Tubes (79-22-49, 04-500) and drain oil in to the container.

    3. Loosen all the bolts and the nuts of the clips on the oil tube Engine Scavenge Oil Tubes (79-22-49, 04-500) to make the oil tube moveable.

    4. Disconnect the oil tube Engine Scavenge Oil Tubes (79-22-49, 04-500) from the oil tube Engine Scavenge Oil Tubes (79-22-49, 04-100) with IAE 1R18003 Wrench 1 off and drain oil in to the container.

    5. Disconnect the oil tube Engine Scavenge Oil Tubes (79-22-49, 04-500) from the valve with IAE 1R18003 Wrench 1 off.

    3. SUBTASK 72-00-60-050-083 Remove the Valve

    1. Refer to Figure.

    2. NOTE

      Hold the weight of the valve before the bolts are released.

      Remove the three bolts which attach the valve to the de-oiler case and remove the valve. Drain the oil in to the container.

    3. Remove and discard the sealing ring.

    4. Install the applicable covers/caps/plugs to all the openings.

    4. Figure: Disconnect the electrical connector and the air tube

    Disconnect the electrical connector and the air tube

    Figure: Disconnect the electrical connector and the air tube

    Disconnect the electrical connector and the air tube

    Figure: Disconnect the oil tube

    Disconnect the oil tube

    Figure: Disconnect the oil tube

    Disconnect the oil tube

    Figure: Remove the No.4 bearing compartment scavenge valve

    Remove the No.4 bearing compartment scavenge valve

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Corrected task title to reflect procedure. (CAS-89761-L8B9Q4)

Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Container - minimum capacity one US gal
Tool Name:Container - minimum capacity one US gal
Manufacturer Code:0AM53
Tool Number:IAE 1R18003
Tool Name:IAE 1R18003 Wrench