TASK 72-44-10-100-002-B00 HPT Stage 1 Support Assembly - Clean the Stage 1 HPT Support Pre SBE 72-0562 (With Brush Seal), Cleaning-002

DMC:V2500-A5-72-44-1001-00A-250A-C|Issue No:001.00|Issue Date:2014-05-01

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 72-44-10-100-002-B00 HPT Stage 1 Support Assembly - Clean the Stage 1 HPT Support Pre SBE 72-0562 (With Brush Seal), Cleaning-002

Effectivity

FIG/ITEM

PART NO.

01-010

2A4084 (Detail of 2A4085)

01-010

2A4085

General

This TASK gives the procedure to clean the post SBE 72-0562 Stage 1 HPT support which has a brush seal. For the other parts of the Stage 1 HPT support assembly, refer to TASK 72-44-10-100-000 (CLEANING-000). For pre SBE 72-0562 (no brush seal) Stage 1 HPT supports. refer to TASK 72-44-10-100-002-B00 (Cleaning-002).

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.

For some ofthe SUBTASKs in this TASK, the brush seal (FIg/Item 01-025) must be disassembled from the support assembly (Fig/ltem 01-010) before you do the specified chemical cleaning that Is specified In the subtask. Refer to Repair, VRS3771 TASK 72-44-10-300-027 SUBTASK 72-44-10-350- 067, SUBTASK 72-44-10-350-068, and SUBTASK 72-44-10-320-065 for removing the brush seal.

Reference

Refer to General Cleaning, Section 70-10-00, in the Standard Practices and Processes 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 Section 70-12-00 in the SPM for the SPM 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 72-44-10-110-001 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 72-44-10-110-002 Remove the Rust and Carbon

      1. If part has brush seal installed, remove brush seal from support assembly. Refer to Repair, VRS3771 TASK 72-44-10-300-027 SUBTASK 72- 44-10-350-067, SUBTASK 72-44-10- 350-068, and SUBTASK 72-44-10- 320-065.

      1. Remove the rivets from the brush seal supports and support assembly, remove the brush seal supports, and remove the brush seal assembly.

      2. Remove the rust and carbon. Refer to the SPM TASK 70-11-13-300-503.

      1. Cleaning of components (long soak, for cobalt and nickel base alloys and heat and non-corrosion resistant steels).

    3. SUBTASK 72-44-10-110-003 Remove the Rust. Carbon and Scale

      1. If part has brush seal installed, remove brush seal from support assembly. Refer to Repair, VRS3771 TASK 72-44-10-300-027 SUBTASK 72- 44-10-350-067, SUBTASK 72-44-10- 350-068, and SUBTASK 72-44-10- 320-065.

      1. Remove the rivets from the brush seal supports and support assembly, remove the brush seal supports, and remove the brush seal assembly.

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

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

    4. SUBTASK 72-44-10-120-001 Remove Remaining Corrosion by One of the Procedures that Follow

      1. Remove corrosion remaining after SUBTASK 72-44-10-110- 065 or SUBTASK 72-44- 10-110-055 chemical cleaning. Refer to SPM TASK 70-12-08-300-503.

      1. Wet abrasive Novaculite blast.

      2. Remove corrosion remaining after SUBTASK 72-44-10-110- 065 or SUBTASK 72-44- 10-110-055 chemical cleaning. Refer to SPM TASK 70-12-13-300-503.

      1. Wet abrasive 500 grit blast.

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

EA 13VC328 incorporated