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 79-21-41-300-027 Oil Pressure Pump/Filter Housing - Related Parts - Repair The Surfaces Of The Oil Pressure Pump Drive Gear, Repair-027 (VRS5297)
General
Price and availability - none.
The practices and processes referred to in the procedure by the TASK numbers are in the SPM.
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
NONEConsumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 02-140 TRIANGULAR INDIA STONE, FINE GRIT | LOCAL | CoMat 02-140 | ||
| CoMat 05-020 WATERPROOF SILICON CARBIDE | LOCAL | CoMat 05-020 |
Spares
NONESafety Requirements
NONEProcedure
Refer to Figure.
Refer to SPM TASK 70-35-03-300-501.
The maximum permitted number of nicks is 3 per tooth, 0.04 in. (1.02 mm) long, not extended more than 0.02 in. (0.51 mm) onto the surface that engages.
The maximum permitted depth of blended nicks is 0.01 in. (0.25 mm).
The minimum distance between the nicks must be equal to or more than the length of the longest nick.
Blend the gear tip of tooth and tooth area at location 1 and 3.
Refer to SPM TASK 70-35-03-300-501.
The maximum permitted blend depth is 0.0014 in. (0.035 mm).
The maximum permitted damaged area of each tooth is 10 percent of the face surface.
It is not necessary to polish the repair surfaces.
Blend the face surface of the gear tooth at location 2.
Refer to SPM TASK 70-35-03-300-501.
The maximum permitted depth of the blending is 0.008 in. (0.20 mm).
Blend the gear surfaces at location 4.
SUBTASK 79-21-41-350-055 Blend Repair the Drive Gear (01-080) Surfaces
Figure: Locations on the drive gear
Locations on the drive gear
