TASK 72-45-11-100-001 HPT Stage 1 Hub - Clean, Cleaning-002

DMC:V2500-A0-72-45-1100-00A-251A-C|Issue No:001.00|Issue Date:2013-11-01

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 72-45-11-100-001 HPT Stage 1 Hub - Clean, Cleaning-002

Effectivity

FIG/ITEM PART NO.

01-010

2A1121

01-010

2A2021

01-010

2A2221

01-011

2A1101

01-011

2A1801

01-011

2A1901

01-011

2A2201

01-011

2A2801

01-011

2A5001

General

This TASK gives the procedure to clean the stage 1 turbine hub assembly. For the other parts of the stage 1 turbine hub, refer to TASK 72-45-11-100-000 (CLEANING-000).

The practices and processes referred to in the procedure by the TASK numbers are in the SPM.

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variants, refer to the IPC.

Reference

Refer to General Cleaning, Section 70-10-00, in the Standard Practices Manual (SPM) for important cleaning information that supplements the TASKs

When more than one TASK or SUBTASK is specified for a part, refer to Section 70-10-00 in the SPM for selection of the applicable cleaning TASK or SUBTASK.

Refer to Section 70-11-00 and 70-12-00 in the SPM for the TASK numbers given below.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-45-11-110-052-001 Remove the Grease and Oil

      1. Remove the grease and oil. Refer to the SPM TASK 70-11-03-300-503

      1. Degrease parts by aqueous cleaning.

    2. SUBTASK 72-45-11-110-053-001 Remove the Rust, Carbon and Scale

      1. Remove the rust, carbon and scale. Refer to the SPM TASK 70-11-54-300-503

      1. Heavy duty scale removal from a component (stainless steel, cobalt and nickel base material).

    3. SUBTASK 72-45-11-120-052 Remove Heat Scale by one of the Methods that Follow

      1. Remove heat scale. Refer to the SPM TASK 70-12-13-300-503

      1. Wet abrasive grit blast (500 grit aluminium oxide). Abrasive blast is permitted in the blade slot area and any area of the part to remove scale or corrosion that stays after chemical cleaning by the SPM TASK 70-11-54-300-503.

      2. Remove heat scale. Refer to the SPM TASK 70-12-08-300-503

      1. Wet abrasive 200 or 325 grit novaculite blast. Abrasive blast is permitted in the blade slot area and any area of the part to remove scale or corrosion that stays after chemical cleaning by the SPM TASK 70-11-54-300-503.

Requirements After Job Completion

Follow-On Conditions

NONE