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 79-11-41-300-018 Oil Tank - Related Parts - Nickel Plate The Mounting Face Of The Cover Assembly, Repair-018 (VRS5219)
General
NOTE
Price and availability - none.
The practices and processes referred to in the procedure by the TASK number are in the SPM.
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Workshop Inspection Equipment | LOCAL | Workshop Inspection Equipment | ||
| Grinding Machine | LOCAL | Grinding Machine | ||
| FPI inspection station | LOCAL | FPI inspection station | ||
| Basket | LOCAL | Basket | ||
| Process Plating Tanks | LOCAL | Process Plating Tanks | ||
| Oven | LOCAL | Oven | ||
| Magnifying glass | LOCAL | Magnifying glass | 4X | |
| Vibrating marking pencil | LOCAL | Vibrating marking pencil |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 02-067 STRIPPABLE COATING | 71410 | CoMat 02-067 |
Spares
NONESafety Requirements
NONEProcedure
Refer to Figure.
Remove all damage and wear. The pre-plating dimension must be between 0.1388 and 0.1407 in. (3.525 and 3.575 mm) after the removal of the damage.
Keep the removal of the material to the minimum necessary to remove the damage.
Machine the mounting face.
SUBTASK 79-11-41-320-056 Machine the Mounting Face of the Cover Assembly
Refer to SPM TASK 70-23-01-230-501.
Cracks are not permitted.
Do the fluorescent penetrant inspection for cracks.
SUBTASK 79-11-41-230-067 Examine the Cover Assembly
Refer to Figure.
Apply masking to the areas of the cover assembly not to be plated.
Refer to SPM TASK 70-33-08-300-503. Plate to a sufficient thickness to permit machining to the last dimensions indicated in the reference figure.
Plating external to the piloting diameter area is permitted, but must be removed.
Do the nickel plating.
Remove the mask.
Flush with cold water.
Flush with hot water.
Dry with air blast.
Clean and dry the cover assembly.
SUBTASK 79-11-41-330-065 Nickel Plate the Mounting Face of the Cover Assembly
Do this procedure as soon as possible, in less than 4 hours, after plating.
Put the cover assembly into an oven at 241 to 260 deg F (116 to 127 deg C) for 60 to 90 minutes.
SUBTASK 79-11-41-370-054 De-embrittle the Cover Assembly
Plating must have a constant color. No circumferential cracks are permitted.
No roughness or blistering is permitted.
Do a visual inspection of the plating for finish, cracks and adhesion.
SUBTASK 79-11-41-220-120 Examine the Cover Assembly
Refer to Figure.
The dimension must be between 0.1506 to 0.1419 in. (3.825 to 3.605 mm).
Chamfer, where necessary.
Machine the mounting face.
SUBTASK 79-11-41-320-057 Machine the Mounting Face of the Cover Assembly
Refer to Figure.
Use a 4X Magnifying glass.
The natural network crack, shown by grinding is permitted.
Do the visual inspection of the plated area for cracks and adhesion.
A thickness of less than 0.0006 in. (0.015 mm), after the last machining is not permitted.
Measure the thickness of the plating.
SUBTASK 79-11-41-220-121 Examine the Nickel Plated Area
Refer to Figure.
Remove the metal lifted by marking.
Vibro-engrave VRS5219 adjacent to the part number.
SUBTASK 79-11-41-350-070 Record the Repair
Figure: Repair details and Dimensions
Repair details and Dimensions

