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 72-31-11-100-002-A00 LPC Fan Blade - Clean The LPC Fan Blade (Non-METCO 58 Coated Root) (Pre SB 72-0375/Pre SB 72-0384)
Effectivity
FIG/ITEM | PART NO. |
|---|---|
01-300 | 6A3971 |
01-300 | 6A3494 |
01-300 | 6A4700 |
01-300 | 6A5485 |
01-300 | 6A6519 |
01-300 | 6A6521 |
01-300 | 6A7403 |
01-300 | 6A7656 |
General
This TASK gives the procedure to clean the Pre SB 72-0375/Pre SB 72-0384 LP compressor fan blade assembly.
The practices and processes referred to in the procedure by the TASK/SUBTASK number are in the SPM.
References
Refer to the SPM for data on these items.
Cleaning - General Information the SPM TASK 70-10-00-100-501
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Cleaning equipment | LOCAL | Cleaning equipment |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 01-145 ALKALINE RUST REMOVER | 71410 | CoMat 01-145 | ||
| CoMat 01-339 ALKALI CLEANER (GENERAL PURPOSE) | LOCAL | CoMat 01-339 | ||
| CoMat 02-001 ADHESIVE TAPE (MASKING) | LOCAL | CoMat 02-001 | ||
| CoMat 02-099 LINT-FREE CLOTH | LOCAL | CoMat 02-099 |
Spares
NONESafety Requirements
NONEProcedure
Remove the soft dirt and the dust. Refer to the SPM TASK 70-11-26-300-503.
Use clean dry air blast or CoMat 02-099 LINT-FREE CLOTH.
Dry.
SUBTASK 72-31-11-110-055 Remove the Soft Dirt and the Dust
NOTE
Do this procedure only if more cleaning is required to complete the inspection requirement.Remove the grease. Refer to the SPM TASK 70-11-03-300-503.
SUBTASK 72-31-11-110-096 Clean the LP Compressor Fan Blade Assembly
Use method 2, low concentration, long soak. Use CoMat 01-145 ALKALINE RUST REMOVER.
NOTE
Do this procedure only if more cleaning is required to complete the inspection requirement.Clean the part. Refer to the SPM TASK 70-11-06-300-503 SUBTASK 70-11-06-300-002.
SUBTASK 72-31-11-110-097 Clean the LP Compressor Fan Blade Assembly

CAUTION
DO NOT APPLY THIS SUBTASK TO THE POST SB 72-0375 AND POST SB 72-0384 METCO 58 COATED FAN BLADES. REFER TO TASK 72-31-11-100-002-B00 FOR THEM.NOTE
This SUBTASK and Step are alternatives.Remove the dry film lubricant. Refer to the SPM TASK 70-11-29-300-503.
SUBTASK 72-31-11-110-057 Remove the Dry Film Lubricant

CAUTION
DO NOT APPLY THIS SUBTASK TO THE POST SB 72-0375 AND POST SB 72-0384 METCO 58 COATED FAN BLADES. REFER TO TASK 72-31-11-100-002-B00 FOR THEM.NOTE
This SUBTASK and Step are alternatives.Remove the anti-frettage lubricant from the blade dovetails. Refer to the SPM TASK 70-12-07-120-501.
SUBTASK 72-31-11-120-051 Remove the Dry Film Lubricant
Remove the polyurethane paint. Refer to the SPM TASK 70-11-29-300-503.
SUBTASK 72-31-11-110-068 Remove the Polyurethane Paint
