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 72-32-25-300-017 No. 3 Bearing Seal Seat - Restore The Hardface On The Seal Seat, Repair-017 (VRS3476)
General
Price and availability - refer to IAE
The practices and processes referred to in the procedure by the TASK number are in the SPM.
Repair Facilities
The Source Demonstration requirements of this repair requires that any facility not authorized to accomplish this repair either utilize the Authorized Repair Vendors listed below or contact IAE Repair Development Group to determine if a qualification program can be initiated at their facility.
IAE - INTERNATIONAL AERO ENGINES AG
400 Main Street
East Hartford, CT 06108 USA
ATTN: Manager, Repair Development Engineering
Authorized repair vendors for VRS3476 are listed below:
WGI, Inc. (formerly Westfield Gage Company, Inc.)
34 Hudson Drive
Southwick, MA 01077
Tel: (413) 569-0444
PRAXAIR SURFACE TECHNOLOGIES
1234 Atlantic Street
North Kansas City, MO 64116
USA
The designation by IAE of an authorized repair vendor indicates that the repair vendor has demonstrated the necessary capability to enable it to carry out the listed repair work. However, IAE makes no warranties or representations concerning the qualifications or quality standards of the repair vendors to carry out the repair work, and accepts no responsibility whatsoever for any work that may be carried out by a vendor, other than when IAE is listed as the repair vendor. Authorized repair vendors do not act as agents or representatives of IAE.
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Workshop Inspection Equipment | LOCAL | Workshop Inspection Equipment |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 02-047 TAPE, HEAT REFLECTIVE | 52152 | CoMat 02-047 |
Spares
NONESafety Requirements
NONEProcedure
Refer to: Figure
Refer to the SPM TASK 70-33-78-300-503.
Use CoMat 02-047 TAPE, HEAT REFLECTIVE to mask the areas around the hardface.
The coating pocket must go from the inside diameter to the outside diameter of the seal face.
Remove the hardface or by chemical stripping.
SUBTASK 72-32-25-330-051 Remove the Hardface by Chemical from the No. 3 Bearing Seal Seat
NOTE
This procedure is an alternative to removing the hardface by machine given in Step.Refer to: Figure
Refer to Figureand SPM TASK 70-34-02-340-501.
The coating thickness must be 0.004 to 0.006 in. (0.102 to 0.152 mm).
The hardness of the coating must be 35 to 40 HRC or equivalent.
Apply hardface to the seal seat.
SUBTASK 72-32-25-340-051 Apply New Hardface to the No. 3 Bearing Seal Seat
Refer to Figure.
Finish machine or lap the hardface area.
SUBTASK 72-32-25-320-060 Finish Machine or Lap the Hardface Area
Refer to: Figure
Refer to TASK 72-32-25-200-000 (INSPECTION/CHECK-000).
Examine the face seal for the finish and flatness.
SUBTASK 72-32-25-220-088 Examine the No. 3 Bearing Face Seal after Repair
Figure: No. 3 bearing seal seat hardface repair
No. 3 bearing seal seat hardface repair
