TASK 75-24-49-840-001 LPT ACC Connector Air Tube - Install New Angle Brackets, Rework-001 - SBE 75-0051

DMC:V2500-A0-75-24-4901-00A-720A-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 75-24-49-840-001 LPT ACC Connector Air Tube - Install New Angle Brackets, Rework-001 - SBE 75-0051

Effectivity

FIG/ITEM

PART NO.

01-010

3A0494

01-010

3A1549

Material of component

DESCRIPTION

RR SYMBOL

MATERIAL

TiCu2

General

Price and availability - none.

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

NOTE

For equipment and materials necessary to do this rework refer to SPM TASKs given below.
SPM TASK 70-23-05-230-501.
SPM TASK 70-39-03-390-501
SPM TASK 70-11-06-300-503.
SPM TASK 70-11-26-300-503.
SPM TASK 70-09-00-400-501.
Equivalent equipment can be used.

Expendable parts

FIG/ITEM

PART IDENT

QTY

75-24-49, 01-460

Angle bracket

1 off

75-24-49, 01-465

Angle bracket

1 off

75-24-49, 01-470

Self Locking Nut

2 off

75-24-49, 01-475

Blind Rivet

6 off

75-24-49, 01-477

Blind Rivet

6 off

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Hand held grinderLOCALHand held grinder

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-24-49-320-054 Remove the Clamps

    1. Refer to Figure.

    2. Put the connector tube on a suitable workbench.

      3. Grind off (01-400 or 01-401) carefully.

    4. Remove the rivets and the clamps.

    2. SUBTASK 75-24-49-230-164 Do a Crack Test at the ACC Connector Tube

      1. Examine the local surface for cracks.

      1. Refer to SPM TASK 70-23-05-230-501.

      2. No cracks are permitted.

      3. Repair the cracks.

      4. Refer to Repair, VRS4251 (Repair-007) TASK 75-24-49-300-007.

    3. SUBTASK 75-24-49-110-138-001 Clean the Connector Tube

      1. Clean the surfaces around the rivet holes.

      1. Refer to SPM TASK 70-11-06-300-503.

    4. SUBTASK 75-24-49-110-138-002 Clean the Connector Tube

      1. Clean the surfaces around the rivet holes.

      1. Refer to SPM TASK 70-11-26-300-503.

    5. SUBTASK 75-24-49-220-231 Examine the Rivet Holes

      1. Dimensionally examine the rivet hole dimensions.

      1. Not more than 0.103 in. (2.62 mm) continue with Step

      2. If the hole diameter is more than above continue with Step

    6. SUBTASK 75-24-49-390-051 Blank off the Existing Rivet Holes

    1. Refer to Figure.

      2. Blank off the six existing rivet holes with blind rivets (01-477). Use replacement blind rivets with part number ST1086-01 or AN123168.

      1. Refer to SPM TASK 70-39-03-390-501. The rivets must be tight.

    7. SUBTASK 75-24-49-390-053 Blank off the Existing Rivet Holes with Oversize Rivets

    1. Refer to Figure.

      2. Drill initial rivet holes to oversize diameter.

      1. Oversize diameter must be between 0.1275 to 0.1315 in. (3.24 to 3.34 mm).

      3. Blank off the oversize rivet holes with blind rivets (01-477). Use replacement blind rivets with part number AN123184 or NAS1398C4-1.

      1. Refer to SPM TASK 70-39-03-390-501. The rivet holes must be tight.

    8. SUBTASK 75-24-49-320-055 Prepare the Connector Tube for Installation of the Angle Brackets

      CAUTION

      KEEP MATERIAL REMOVAL TO THE MINIMUM TO AVOID DAMAGE TO THE CONNECTOR TUBE.

    1. Refer to Figure.

      2. Remove the weld build up at the weld seams.

    9. SUBTASK 75-24-49-230-077 Do a Crack test at the ACC Connector Tube

      1. Do the test for cracks at the dressed areas.

      1. Refer to SPM TASK 70-23-05-230-501.

      2. Cracks are not permitted except linear indications not more than 0.008 in. (0.2 mm) in weld seams

    10. SUBTASK 75-24-49-390-052 Install the Angle Brackets

    1. Refer to Figure, Figure, and Figure.

      2. Install the angle brackets with six rivets (01-475).

      1. Refer to SPM TASK 70-39-03-390-501.

    3. Install the self locking nuts (01-470).

    11. SUBTASK 75-24-49-220-232 Examine the Rivets

      1. Examine the quality of the machine riveting and safety of joints.

      1. Refer to SPM TASK 70-39-03-390-501 for acceptance standards.

    12. SUBTASK 75-24-49-430-001 Install the Self Locking Nuts

      1. Install the self locking nuts.

      1. Refer to Figure.

    13. SUBTASK 75-24-49-320-056 Identify the ACC Connector Tube (01-010) with the New Part Number

      1. Identify the connector tube with the new part number.

      1. Use shallow electrochemical marking method. Refer to SPM TASK 70-09-00-400-501.

      2. NUMBER BEFORE - 3A0494

      3. NEW NUMBER - 3A2335

      4. NUMBER BEFORE - 3A1549

      5. NEW NUMBER - 3A2316

    14. Figure: Rework of the ACC Connector Tube

    Rework of the ACC Connector Tube

    Rework of the ACC Connector Tube

    Rework of the ACC Connector Tube

    Rework of the ACC Connector Tube

    Rework of the ACC Connector Tube

    Rework of the ACC Connector Tube

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Hand held grinder
Tool Name:Hand held grinder