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 79-21-49-300-014 Engine Pressure Oil Tubes - Blend Repair, Repair-014 (VRS1689)
General
The practices and processes referred to in the procedure by the TASK number are in the SPM.
This Repair scheme gives the procedure for blending the Tube.
Price and availability
Refer to IAE for any of the following:
Tools
Engine parts
Repair of spares
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Grinder, Hand held pneumatic | LOCAL | Grinder, Hand held pneumatic | ||
| Files, rotating (Silicon carbide) | LOCAL | Files, rotating (Silicon carbide) | ||
| Fluorescent Penetrant Inspection Equipment | LOCAL | Fluorescent Penetrant Inspection Equipment |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 05-020 WATERPROOF SILICON CARBIDE | LOCAL | CoMat 05-020 | ||
| CoMat 05-021 WATERPROOF SILICON CARBIDE | 44197 | CoMat 05-021 |
Spares
NONESafety Requirements
NONEProcedure
Dress until all damage is removed.
WARNING
TITANIUM COMPONENTSSILICON CARBIDE TYPE WHEELS, STONES AND ABRASIVE PAPERS ARE TO BE USED FOR THIS REPAIR.ALUMINUM OXIDE TYPES MUST NOT BE USED.THE MATERIAL WILL OXIDIZE AND CRACK IF MECHANICAL CUTTERS ARE USED HEAVILY. THIS HAS OCCURRED IF THE COMPONENT SHOWS DARK STRAW TO BLUE DISCOLORATION. IF AT ANY TIME THIS COLORATION OCCURS THE COMPONENT MUST BE REJECTED.Dress to remove damage.
Refer to SPM TASK 70-35-03-300-501.
Maximum blend limit is 0.004 in. (0.10 mm) in depth.
Use CoMat 05-020 WATERPROOF SILICON CARBIDE abrasive paper or CoMat 05-021 WATERPROOF SILICON CARBIDE.
Blend dressed area and polish out scores. Refer to SPM TASK 70-35-03-300-501.
SUBTASK 79-21-49-350-052 Dress to Remove Damage
Flatten with hand tools.
Repair the distortions.
SUBTASK 71-21-49-350-053 Repair of the Distortion
Refer to Inspection-000 TASK 79-21-49-200-101.
Do a visual inspection.
SUBTASK 71-21-49-220-091 Examine the Tubes
Refer to SPM TASK 70-23-01-230-501.
Make sure there is no cracks in repaired area.
Do a penetrant crack test for the dressed area..
SUBTASK 79-21-49-230-059 Examine the Tube for Cracks
Refer to Testing-000 TASK 79-21-49-700-100.
Do a pressure test on the parts.
SUBTASK 79-21-49-230-060 Examine the Tubes for Leaks