DMC:V2500-A0-72-41-3426-00A-720A-B|Issue No:002|Issue Date:2021-02-01

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

V2500-A1

Common Information

TASK 72-41-34-300-021 HPC Stage 6 Unison Rings - Replace The Bushes And Bracket Assemblies, Repair-021 (VRS6232)

Effectivity

FIG/ITEM PART NO.
06-440	6A3551 Assembly A
06-540	6A3553 Assembly B

Material of component

RR
DESCRIPTION SYMBOL MATERIAL
Ring	TAB	Titanium alloy
Bush	VEB	Graphite filled polymide resin

General

This Repair must only be done when the instruction to do so is given in TASK 72-41-34 (INSPECTION).

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

Price and availability

Refer to International Aero Engines AG

Related repairs

HP Compressor Actuating Ring and Associated Housings - Replacement of the Inserts. Refer to TASK 72-41-34-300-013 (VRS6155)

NOTE

Equivalent materials or equipment can be used.
More equipment and materials necessary to do this Repair are in the SPM TASK given below:
TASK 70-23-01-230-501

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

Name	Manufacturer	Part Number / Identification	Remark
Drilling machine	LOCAL	Drilling machine
Drill	LOCAL	Drill	0.307 in. (7.8 mm) dia
Standard Workshop Equipment	LOCAL	Standard Workshop Equipment
Penetrant Crack Test Equipment	LOCAL	Penetrant crack test equipment

Consumables, Materials and Expendables

NONE

Spares

Name	Part Number / Identification	Quantity
Bush - assy A	UP10815	A/R
Bush - assy B	UP10815	A/R
Bracket assy - assy A	6A2899	A/R
Bracket assy - assy B	6A2899	A/R
Bracket assy - assy A	6A2903	A/R
Bracket assy - assy B	6A3683	A/R

Safety Requirements

NONE

Procedure

1. Refer to: Figure and Figure
2. 1. Use a drilling machine and a drill 0.307in. (7.8 mm) dia.
3. 1. Use a round bar. Make sure the bush is removed from the channel.
    NOTE
    Pushing the bushing from the hole using a round bar, and on its own is sufficient to remove the bushings when needed.
4. Remove the brackets from the channel.
5. 1. Use a soft clean cloth and air blast, remove the sharp edges around the hole.
    Use standard workshop equipment.
1. Refer to: Figure, Figure and Figure
2. 1. Reject if the location hole is oversize.
1. 1. Replace brackets if damaged.
2. 1. Refer to VRS6155.
1. 1. Refer to the SPM TASK 70-23-01-230-501.
    Use penetrant crack test equipment.
    Cracks are not permitted.
1. Refer to: Figure, Figure, Figure, Figure, Figure, Figure, Figure, Figure and Figure
2. 1. Use 6A2899 bracket assembly 06-470 A/R, 6A2899 bracket assembly 06-570 A/R or 6A2903 bracket assembly 06-480 A/R as necessary. Use 0.190 in. (4.82 mm) diameter No. 10 UNF bolts to hold brackets. Tighten with your hand.
3. 1. Use UP10815 bush 06-460 A/R or UP10815 bush 06-560 A/R. Push bush into the hole until the safety feature is engaged.
    Use standard workshop equipment.
4. Remove the bolts which hold the brackets.
1. Refer to: Figure, Figure, Figure, Figure, Figure, Figure, Figure, Figure and Figure
2. 1. Make sure the safety feature is engaged.