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 79-22-41-300-032 Oil Scavenge Pump - Related Parts - Nickel Plate The Mounting Face Of The Oil Casing Assembly, Repair-032 (VRS5369)
General
Price and availability - none
The practices and processes referred to in the procedure by the TASK numbers are in the SPM.
NOTE
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 | ||
| Fluorescent Penetrant Inspection Equipment | LOCAL | Fluorescent Penetrant Inspection Equipment | ||
| Basket | LOCAL | Basket | ||
| Process Plating Tanks | LOCAL | Process Plating Tanks | ||
| Oven | LOCAL | Oven | ||
| Magnifying glass | LOCAL | Magnifying glass | ||
| 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 0.1400 and 0.1486 in. (3.555 and 3.775 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 79-22-41-320-061 Machine the Mounting Face of the Casing Assembly
Refer to SPM TASK 70-23-01-230-501.
Cracks are not permitted.
Do the fluorescent penetrant inspection for cracks
SUBTASK 79-22-41-230-162 Examine the Casing Assembly
Refer to Figure.
Apply masking to the areas of the casing 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 an air blast.
Clean and dry the casing assembly
SUBTASK 79-22-41-330-070 Nickel Plate the Mounting Face of the Casing Assembly
Do this procedure as soon as possible, in less than 4 hours, after plating
Put the casing assembly into an Oven at 241 to 260 deg F (116 to 127 deg C) for 60 to 90 minutes
SUBTASK 79-22-41-370-056 De-embrittle the Casing 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 79-22-41-220-215 Examine the Casing Assembly
Refer to Figure.
The dimension must be between 0.1368 to 0.1388 in. (3.475 to 3.525 mm).
Chamfer, where necessary
Machine the mounting face
SUBTASK 79-22-41-320-062 Machine the Mounting Face of the Casing Assembly
Refer to Figure.
Use a 4X Magnifying glass. The natural network crack, shown by grinding is permitted
Do a visual inspection of the plated area for cracks and adhesion
Do not accept 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 79-22-41-220-167 Examine the Nickel Plated Area
Refer to Figure.
Remove the metal lifted by marking.
Vibro-engrave VRS5369 adjacent to the part number
SUBTASK 79-22-41-350-074 Record the Repair
Figure: Repair Details And Dimensions
Repair Details And Dimensions
