EMAIL: adrian.paramanov@dedalustech.

eu
LETTER OF TRANSMITTAL
FOR
PERMANENT REVISION NO. 14
TO
COMPONENT MAINTENANCE MANUAL
32-43-11

FAN AND TRANSDUCER INSTALLATION P/N AHA1130, AHA1162, AHA1577,

AHA1578 AND AC65934

AIRCRAFT APPLICABILITY - BAe146 AND AVRO146/RJ

ISSUED BY
MEGGITT AIRCRAFT BRAKING SYSTEMS
HOLBROOK LANE, COVENTRY CV6 4AA, ENGLAND.
COPYRIGHT  2014 MEGGITT AIRCRAFT BRAKING SYSTEMS

1. Revision Highlights

A. Updated MIL specification MIL-C-83723 to MIL-DTL-83723.

B. Deleted the hydrocarbon cleaning fluid specification Evolve (Class II).
C. Replaced specification MIL-T-5544B to SAE AMS2518.
D. Minor editorial changes.

DEDALUS TECH
CO: 9466

SEE EXPORT COMPLIANCE PARAGRAPH REVERSE SIDE.

 EMAIL: adrian.paramanov@dedalustech.eu
EXPORT COMPLIANCE
These commodities, technology or software were exported from the United States in accordance with the Export
Administration Regulations. Diversion contrary to U.S. law is prohibited.

DEDALUS TECH
CO: 9466
 EMAIL: adrian.paramanov@dedalustech.eu
2. Revision Procedure
A. Remove and discard the specified pages from Meggitt Aircraft Braking Systems
component maintenance manual 32-43-11 and insert the new and revised pages
supplied:

Pages to be Removed and Discarded New and Revised Pages

Title Page - Title Page -

List of Effective Pages Page 1 and 2 List of Effective Pages Page 1 and 2

Description and Operation Pages 1 thru Description and Operation Pages 1 thru
4 4

Cleaning Page 401 and Cleaning Page 401 and

402 402

Repair No. 3 Page 601 and Repair No. 3 Page 601 and
602, Pages 602, Pages
607 thru 612 607 thru 612

Repair No. 4 Page 601 and Repair No. 4 Page 601 and
602 602

Assembly Page 701 and Assembly Page 701 and

(Including Storage) 702 (Including Storage) 702

DEDALUS TECH
CO: 9466
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 EMAIL: adrian.paramanov@dedalustech.eu
B. Make the necessary entry in the record of permanent revisions of component
maintenance manual 32-43-11 to certify the incorporation of this revision.

C. File this letter of transmittal.

D. STATEMENT OF CERTIFICATION

This Technical content of the revision to this document is approved under the authority of
DOA Nr. EASA.21J.047.

Signed:
G Percival
Chief Airworthiness Engineer
Date: Jan 16/14

DEDALUS TECH
CO: 9466
CO: 9466 DEDALUS TECH EMAIL: adrian.paramanov@dedalustech.eu
 EMAIL: adrian.paramanov@dedalustech.eu
LETTER OF TRANSMITTAL
FOR
PERMANENT REVISION NO. 13
TO
COMPONENT MAINTENANCE MANUAL
32-43-11

FAN AND TRANSDUCER INSTALLATION P/N AHA1130, AHA1162, AHA1577,

AHA1578 AND AC65934

AIRCRAFT APPLICABILITY - BAe146 AND AVRO146/RJ

ISSUED BY
MEGGITT AIRCRAFT BRAKING SYSTEMS
HOLBROOK LANE, COVENTRY CV6 4AA, ENGLAND.
COPYRIGHT  2012 MEGGITT AIRCRAFT BRAKING SYSTEMS

1. Revision Highlights

A. Nomenclature of Item 10 has been corrected to Circlip wire at Check page block.
B. Item 120 reference has been deleted for transducer housing assembly at Check page block.
C. Emery cloth has been replaced by Norton R222 J weight P100 cloth.
D. Reference to Tool No.8 has been deleted at Assembly and Special Tools, Fixtures and
Equipment page block.
E. Item 410 reference has been deleted for transducer at Assembly page block.
F. Equipment list has been added at Special Tools, Fixtures and Equipment page block.
G. Minor editorial changes.

DEDALUS TECH
CO: 9466
 EMAIL: adrian.paramanov@dedalustech.eu
2. Revision Procedure
A. Remove and discard the specified pages from Meggitt Aircraft Braking Systems
component maintenance manual 32-43-11 and insert the new and revised pages
supplied:

Pages to be Removed and Discarded New and Revised Pages

Title Page - Title Page -

List of Effective Pages Page 1 and 2 List of Effective Pages Page 1 and 2

Cleaning Page 401 and Cleaning Page 401 and

402 402

Check Page 501 and Check Page 501 and

502 502

Repair No. 1 Page 601 and Repair No. 1 Page 601 and
602 602
Repair No. 3 Pages 601 Repair No. 3 Pages 601
thru 610 thru 612

Repair No. 4 Page 601 and Repair No. 4 Page 601 and
602 602

Repair No. 5 Page 601 and Repair No. 5 Page 601 and
602 602

Repair No. 8 Page 601 and Repair No. 8 Page 601 and
602 602

Assembly Pages 701 Assembly Pages 701

(Including Storage) thru 704 (Including Storage) thru 704

Special Tools, Fixtures and Page 901 and Special Tools, Fixtures and Page 901 and
Equipment 902 Equipment 902

DEDALUS TECH
CO: 9466
 EMAIL: adrian.paramanov@dedalustech.eu
B. Make the necessary entry in the record of permanent revisions of component
maintenance manual 32-43-11 to certify the incorporation of this revision.

C. File this letter of transmittal.

D. STATEMENT OF CERTIFICATION

This revision is approved under the authority of DOA Nr EASA. 21J.047 and approved for
publication under the delegated authority of BAe SYSTEMS Letter of Authorisation
RALOA/00402/DDA.

Signed:
G Percival
Chief Airworthiness Engineer
Date: Nov 13/12

DEDALUS TECH
CO: 9466
CO: 9466 DEDALUS TECH EMAIL: adrian.paramanov@dedalustech.eu
 EMAIL: adrian.paramanov@dedalustech.eu
LETTER OF TRANSMITTAL
FOR
PERMANENT REVISION NO. 12
TO
COMPONENT MAINTENANCE MANUAL
32-43-11

FAN AND TRANSDUCER INSTALLATION P/N AHA1130, AHA1162, AHA1577,

AHA1578 AND AC65934

AIRCRAFT APPLICABILITY - BAe146 AND AVRO146/RJ

ISSUED BY
MEGGITT AIRCRAFT BRAKING SYSTEMS
HOLBROOK LANE, COVENTRY CV6 4AA, ENGLAND.
COPYRIGHT  2011 MEGGITT AIRCRAFT BRAKING SYSTEMS

1. Revision Highlights
A. Updated MIL specification MIL-C-5541 to MIL-DTL-5541.
B. Replaced Carborundum cloth with Norton R222 J weight P 100 cloth.
C. Minor editorial changes.

2. Revision Procedure
A. Remove and discard the specified pages from Meggitt Aircraft Braking Systems
component maintenance manual 32-43-11 and insert the new and revised pages
supplied:

Pages to be Removed and Discarded New and Revised Pages

Title Page - Title Page -

List of Effective Pages Page 1 and 2 List of Effective Pages Page 1 and 2

Introduction Page 1 and 2 Introduction Pages 1 thru

4

Description and Operation Page 3 and 4 Description and Operation Page 3 and 4
DEDALUS TECH

Cleaning Page 401 and Cleaning Page 401 and

402 402

Repair No. 1 Page 601 and Repair No. 1 Page 601 and
602 602
Continued...
CO: 9466
 EMAIL: adrian.paramanov@dedalustech.eu
Pages to be Removed and Discarded New and Revised Pages

Repair No. 4 Page 601 and Repair No. 4 Page 601 and
602 602

Repair No. 5 Page 601 and Repair No. 5 Page 601 and
602 602

Repair No. 8 Page 601 and Repair No. 8 Page 601 and
602 602

Illustrated Parts List Page 1003 Illustrated Parts List Page 1003
and 1004 and and 1004 and
Pages 1009 Pages 1009
thru 1012 thru 1012

B. Make the necessary entry in the record of permanent revisions of Meggitt Aircraft Braking
Systems component maintenance manual 32-43-11 to certify the incorporation of this
revision.

C. File this letter of transmittal.

D. STATEMENT OF CERTIFICATION

This revision is approved under the authority of DOA Nr EASA. 21J.047 and approved for
publication under the delegated authority of BAe SYSTEMS Letter of Authorisation
RALOA/00402/DDA.

Signed:
G Percival
DEDALUS TECH

Chief Airworthiness Engineer

Date: Dec 15/11
CO: 9466
 EMAIL: adrian.paramanov@dedalustech.eu
LETTER OF TRANSMITTAL
FOR
PERMANENT REVISION NO. 11
TO
COMPONENT MAINTENANCE MANUAL
32-43-11

FAN AND TRANSDUCER INSTALLATION P/N AHA1130, AHA1162, AHA1577,

AHA1578 AND AC65934

AIRCRAFT APPLICABILITY - BAe146 AND AVRO146/RJ

ISSUED BY
MEGGITT AIRCRAFT BRAKING SYSTEMS
HOLBROOK LANE, COVENTRY CV6 4AA, ENGLAND.
COPYRIGHT  2010 MEGGITT AIRCRAFT BRAKING SYSTEMS

1. Revision Highlights
A. Updated the Title Page.
B. Revised Repair No. 3 due to FSE 66/2 paint is no longer available and updated removal
of paint protection procedure (Ref. Repair No. 3).
C. Updated Vendor code and address (Ref. Illustrated Parts List).
D. Updated IPL Fig. 2 item 360A to show POST MOD and SUPSDS 360. Corrected the
Figure title to Figure IPL 1. (Ref. Illustrated Parts List).
E. Minor editorial changes (Ref. Illustrated Parts List).

2. Revision Procedure
A. Remove and discard the specified pages from Meggitt Aircraft Braking Systems
component maintenance manual 32-43-11 and insert the new and revised pages
supplied:

Pages to be Removed and Discarded New and Revised Pages

Title Page - Title Page -

List of Effective Pages Page 1 and 2 List of Effective Pages Page 1 and 2
DEDALUS TECH

Repair No. 3 Pages 601 Repair No. 3 Pages 601

thru 604 thru 610

Illustrated Parts List Pages 1003 Illustrated Parts List Pages 1003
thru 1012 thru 1012
CO: 9466
 EMAIL: adrian.paramanov@dedalustech.eu
B. Make the necessary entry in the record of permanent revisions of Meggitt Aircraft Braking
Systems component maintenance manual 32-43-11 to certify the incorporation of this
revision.

C. File this letter of transmittal.

D. STATEMENT OF CERTIFICATION

This revision is approved under the authority of DOA Nr EASA. 21J.047 and approved for
publication under the delegated authority of BAe SYSTEMS Letter of Authorisation
RALOA/00402/DDA.

Signed:
G Percival
Chief Airworthiness Engineer
Date: Nov 26/10

DEDALUS TECH
CO: 9466
 EMAIL: adrian.paramanov@dedalustech.eu
LETTER OF TRANSMITTAL
FOR
PERMANENT REVISION NO. 10
TO
COMPONENT MAINTENANCE MANUAL
32-43-11

FAN AND TRANSDUCER INSTALLATION P/N AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

AIRCRAFT APPLICABILITY - BAe146 & AVRO146/RJ

ISSUED BY
DUNLOP AEROSPACE BRAKING SYSTEMS
HOLBROOK LANE, COVENTRY CV6 4AA, ENGLAND.
COPYRIGHT © 2007 DUNLOP AEROSPACE LIMITED

1. Revision Highlights

A. Title page changed to show currently correct data.

B. Added Record of Temporary Revisions page.

C. Introduction page revised to show correct data (Ref. Introduction).

D. Deleted the reference of tool item no. 8 and revised para 3.B.(4) to show
correct data (Ref. Disassembly).

E. Added a note for lifed items and revised para 1.C.(1) to show correct item
no. for drive spring (Ref. Check).

F. Replaced trichloroethane with hydrocarbon cleaning fluid (Ref. Cleaning

and Repair No. 3 and Repair No. 4).

G. Added 2-Butanone to Methyl Ethyl Ketone (MEK) (Ref. Repair No. 5).

H. Added Repair procedure RP1213 (Ref. Repair No. 8).

I. Replaced Alocrom specification MIL-C-5541 with MIL-DTL-5541 (Ref. Repair

No. 8).
DEDALUS TECH

J. Revised para 3.G.(2) to show correct item no. for bolt housing
(Ref. Assembly (Including Storage)).

K. Revised Illustrated Parts List to show correct company name and address
and revised IPL to show correct item no. (Ref. Illustrated Parts List).
CO: 9466
 EMAIL: adrian.paramanov@dedalustech.eu
2. Revision Procedure

A. Remove and discard the specified pages from Dunlop Aerospace component
maintenance manual 32-43-11 and insert the new and revised pages supplied:

Pages to be Removed and Discarded New and Revised Pages

Title - Title -

- - Record of Temporary Page 1/2

Revisions

Service Bulletin List Page 1/2 Service Bulletin List Page 1 and
2

List of Effective Pages Page 1/2 List of Effective Pages Page 1 and
2

Table of Contents Pages 1 Table of Contents Pages 1

thru 4 thru 4

Introduction Page 1/2 Introduction Page 1/2

Disassembly Page 301 Disassembly Page 301

and 302 and 302

Cleaning Page Clean Page 401

401/402 and 402

Check Page 501 Check Page 501

and 502 and 502

Repair No. 3 Pages 601 Repair No. 3 Pages 601

thru 604 thru 604

Repair No. 4 Page 601 Repair No. 4 Page 601

and 602 and 602

Repair No. 5 Page Repair No. 5 Page 601

601/602 and 602

- - Repair No. 8 Pages 601

thru 606
DEDALUS TECH

Assembly (Including Page 703 Assembly (Including Page 703

Storage) and 704 Storage) and 704

Continued...
CO: 9466
 EMAIL: adrian.paramanov@dedalustech.eu
Pages to be Removed and Discarded New and Revised Pages

Illustrated Parts List Pages 1001 Illustrated Parts List Pages 1001
thru 1004 thru 1004
and Page and Page
1011 and 1011 and
1012 1012

B. Make the necessary entry in the record of permanent revisions of component

maintenance manual 32-43-11 to certify the incorporation of this revision.

C. File this letter of transmittal.

D. STATEMENT OF CERTIFICATION

This revision is approved under the authority of DOA Nr. EASA.21J.047 and
approved for publication under the delegated authority of BAE SYSTEMS
Letter of Authorisation LOA/0002/REG.

Signed:
G Percival
Chief Airworthiness Engineer
Date: Aug 31/07

DEDALUS TECH
CO: 9466
CO: 9466 DEDALUS TECH EMAIL: adrian.paramanov@dedalustech.eu
 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
WITH ILLUSTRATED PARTS LIST
For
FAN AND TRANSDUCER
INSTALLATION
PART No. AHA1130, AHA1162,
AHA1577, AHA1578 AND AC65934

STATEMENT OF CERTIFICATION
This Technical content of the revision to this document is approved
under the authority of DOA Nr. EASA.21J.047.

DEDALUS TECH

All Rights Reserved

Copyright © 2014
Meggitt Aircraft Braking Systems
This document is the property of Meggitt Aircraft Braking Systems and shall not be copied or used, either in whole or part, for any
purpose other than that for which it is supplied, without the express written authority of Meggitt Aircraft Braking Systems.

PUB. NO: AP-2114 32-43-11 Rev 14, Jan 16/14

CO: 9466
CO: 9466 DEDALUS TECH EMAIL: adrian.paramanov@dedalustech.eu
 EMAIL: adrian.paramanov@dedalustech.eu
10 INCORPORATED BY DUNLOP

11 INCORPORATED BY MABS

12 INCORPORATED BY MABS
DEDALUS TECH

13 INCORPORATED BY MABS

14 INCORPORATED BY MABS
CO: 9466
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 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

RECORD OF TEMPORARY REVISIONS

Inserted Removed
Temporary Issue
Rev. No. Date Page No.
Date By Date By

DEDALUS TECH

Record of Temporary Revisions

CO: 9466

Page 1/2 Blank

32-43-11 Rev 10, Aug 31/07
COPYRIGHT © 2007 DUNLOP AEROSPACE LIMITED
CO: 9466 DEDALUS TECH EMAIL: adrian.paramanov@dedalustech.eu
 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

SERVICE BULLETIN LIST

Service Unit Mod.State Incorporated in

Bulletin Part Modification or Manual
No. No. No. New Part No. Rev. Date

- AC65934 C.10574(0) 2 Initial August.27/81

Issue

C.2210 3 1 Jan.28/83

- AHA1130 C.10533(0) 1C Initial August.27/81

Issue

- AHA1130 C.10538(0) 1D Initial August.27/81

Issue

- AHA1130 C.10556(0) 2 Initial August.27/81

Issue

- AHA1130 C.10561(0) 2A Initial August.27/81

Issue

- AHA1130 C.2099 3 Initial August.27/81

Issue

- AHA1130 C.2115 4 Initial August.27/81

Issue

- AHA1130 C.10611(0) 4C 1 Jan.28/83

32-955 AHA1130 C.2308 5 2 June 28/84

32-966 AHA1130 C.2351 AHA1577 3 May 2/85

AHA1130 C.2404 6 5 April 25/86

AHA1130 C.2427 7 6 June 19/86

- AHA1130 C.10819(0) 7A 10 Aug 31/07

- AHA1162 C.10534(0) 1C Initial August.27/81

Issue
DEDALUS TECH

- AHA1162 C.10538(0) 1D Initial August.27/81

Issue

Service Bulletin List

Page 1
32-43-11
CO: 9466

Rev 10, Aug 31/07

COPYRIGHT © 2007 DUNLOP AEROSPACE LIMITED
 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

Service Unit Mod.State Incorporated in

Bulletin Part Modification or Manual
No. No. No. New Part No. Rev. Date

- AHA1162 C.10556(0) 2 Initial August.27/81

Issue

- AHA1162 C.10561(0) 2A Initial August.27/81

Issue

- AHA1162 C.2100 3 Initial August.27/81

Issue

- AHA1162 C.2116 4 Initial August.27/81

Issue

- AHA1162 C.10611(0) 4C 1 Jan.28/83

32-955 AHA1162 C.2308 5 2 June 28/84

32-966 AHA1162 C.2351 AHA1578 3 May 2/85

AHA1162 C.2404 6 5 April 25/86

AHA1162 C.2427 7 6 June 19/86

- AHA1162 C.10819(0) 7A 10 Aug 31/07

- AHA1577 C.10725(0) 2 3 May 2/85

AHA1577 C.10750(0) 3 5 April 25/86

AHA1577 C.2404 4 5 April 25/86

AHA1577 C.2427 5 6 June 19/86

- AHA1577 C.10819(0) 5B 10 Aug 31/07

- AHA1578 C.10725(0) 2 3 May 2/85

AHA1578 C.10750(0) 3 5 April 25/86

DEDALUS TECH

AHA1578 C.2404 4 5 April 25/86

AHA1578 C.2427 5 6 June 19/86

- AHA1578 C.10819(0) 5B 10 Aug 31/07

Service Bulletin List

Page 2
32-43-11
CO: 9466

Rev 10, Aug 31/07

COPYRIGHT © 2007 DUNLOP AEROSPACE LIMITED
 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934
LIST OF EFFECTIVE PAGES

SUBJECT PAGE DATE SUBJECT PAGE DATE

Title Page - Jan 16/14 Repair No. 2 601 Jan.28/83

602 Blank
Record of Permanent 1 August 27/81
Revisions 2 Blank Repair No. 3 601 Nov 13/12
602 Jan 16/14
Record of Temporary 1 Aug 31/07 603 Nov 13/12
Revisions 2 Blank 604 Nov 13/12
605 Nov 13/12
Service Bulletin 1 Aug 31/07 606 Nov 13/12
List 2 Aug 31/07 607 Jan 16/14
608 Jan 16/14
List of Effective 1 Jan 16/14 609 Jan 16/14
Pages 2 Jan 16/14 610 Jan 16/14
611 Jan 16/14
Table of Contents 1 Aug 31/07 612 Jan 16/14
2 Aug 31/07
3 Aug 31/07 Repair No. 4 601 Jan 16/14
4 Blank 602 Dec 15/11

Introduction 1 Dec 15/11 Repair No. 5 601 Nov 13/12

2 Dec 15/11 602 Dec 15/11
3 Dec 15/11
4 Blank Repair No. 6 601 April 22/86
602 April 22/86
Description and 1 August 27/81
Operation 2 Jan 16/14 Repair No. 7 601 Nov 14/01
3 May 2/85 602 Nov 14/01
4 Jan 16/14
Repair No. 8 601 Nov 13/12
Disassembly 301 May 2/85 602 Aug 31/07
302 Aug 31/07 603 Aug 31/07
303 May 2/85 604 Aug 31/07
304 May 2/85 605 Aug 31/07
305 Jul 02/03 606 Aug 31/07
306 Nov 14/01
Assembly 701 Jan 16/14
Cleaning 401 Jan 16/14 (Including 702 Jan 16/14
402 Aug 31/07 Storage) 703 Nov 13/12
704 Nov 13/12
Check 501 Nov 13/12 705 May 2/85
DEDALUS TECH

502 Aug 31/07 706 Blank

Repair No. 1 601 Nov 13/12

602 Dec 15/11

List of Effective Pages

Page 1
32-43-11 Rev 14, Jan 16/14
CO: 9466

COPYRIGHT  2014 MEGGITT AIRCRAFT BRAKING SYSTEMS

 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

SUBJECT PAGE DATE

Fits and 801 May 2/85

Clearances 802 Blank

Special Tools, 901 Nov 13/12

Fixtures and 902 Nov 13/12
Equipment

Illustrated 1001 Feb 08/02

Parts List 1002 Aug 31/07
1003 Dec 15/11
1004 Dec 15/11
1005 Nov 26/10
1006 Nov 26/10
1007 Nov 26/10
1008 Jul 02/03
1009 Nov 26/10
1010 Dec 15/11
1011 Dec 15/11
1012 Dec 15/11

DEDALUS TECH

List of Effective Pages

Page 2
32-43-11 Rev 14, Jan 16/14
CO: 9466

COPYRIGHT  2014 MEGGITT AIRCRAFT BRAKING SYSTEMS

 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

TABLE OF CONTENTS
PAGE

DESCRIPTION AND OPERATION

Description and Operation 1

Transducer Installation Only

Fan and Transducer Installation

Leading Particulars 2

Transducer Installation Only

Fan and Transducer Installation

DISASSEMBLY

Special Tools and Materials 301

Removal from Aircraft 301

Transducer Installation (AC65934)

Fan and Transducer Installations (AHA1130, AHA1162)
Fan and Transducer Installations (AHA1577, AHA1578)

Disassembly Procedure 302

Transducer Installation (AC65934)

Transducer and Fan Installations (AHA1130, AHA1162, AHA1577, AHA1578)

Disassembly of Impeller 306

CLEANING

Equipment and Materials 401

Equipment
Materials

Cleaning Procedure 402

Transducer and Fan Motor

Other Metallic Components
DEDALUS TECH

CHECK

Check Procedure 501

Transducer
Fan Motor

Table of Contents
Page 1
32-43-11
CO: 9466

Rev 10, Aug 31/07

COPYRIGHT © 2007 DUNLOP AEROSPACE LIMITED
 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

PAGE

Transducer Installation Components

Fan and Transducer Installation Components

REPAIR

Repair No. 1 - Repair of Damage to Aluminium Alloy Components R1-601

Repair No. 2 - Renewal of Wire Threads R2-601

Repair No. 3 - Repair of Paint Finish R3-601

Repair No. 4 - Renewal of Motor Mount Rubber Pads R4-601

Repair No. 5 - Renewal of Duct Assembly Sealing Ring R5-601

Repair No. 6 - Repair of Duct Assembly Support Webs - RP1168 R6-601

Repair No. 7 - Impeller Key Removal and Assembly R7-601

Repair No. 8 - Repair of Cooling Fan Motor Mount - RP1213 R8-601

ASSEMBLY (INCLUDING STORAGE)

Special Tools and Materials 701

Special Tools
Materials

Transducer Installation Only 702

Preparation
Transducer
Drive Cover Assembly

Fan and Transducer Installation 702

Preparation
Fan Motor
Impeller Assembly
Transducer Drive Shaft Assembly
Transducer
Duct Assembly
DEDALUS TECH

Final Assembly

Storage After Assembly 705

Packing Materials
Storage Conditions

Table of Contents
Page 2
32-43-11
CO: 9466

Rev 10, Aug 31/07

COPYRIGHT © 2007 DUNLOP AEROSPACE LIMITED
 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

PAGE

FITS AND CLEARANCES

Torque Values 801

SPECIAL TOOLS, FIXTURES AND EQUIPMENT 901

ILLUSTRATED PARTS LIST

INTRODUCTION

Purpose 1001

To Use this Section 1001

Figure and Item Column

Part Number Column
Airline Part Number Column
Nomenclature Column
Effectivity Column
Units per Assembly Column

Vendor Code List 1004

ILLUSTRATIONS

FIGURE PAGE

1 Transducer Installation Only 1

2 Fan and Transducer Installations 3
301 Exploded View of Transducer Installation (AC65934) 303
302 Exploded View of Transducer and Fan Installations
(AHA1130, AHA1162, AHA1577, AHA1578) 305
601 Stiffening Plate Manufacture and Fitting Details R6-602
601 Machining Details of the Slots R8-603
602 Machining Details of Motor Mount R8-604
603 Installation of Wire Thread Inserts R8-604
604 Assembly Data of Shims R8-606
IPL 2 Transducer Installation Only (AC65934) 1006
IPL 2 Fan and Transducer Installations 1008

ASSOCIATED PUBLICATIONS
Title Dunlop CMM
DEDALUS TECH

Component Maintenance Manual (Transducer ACM28076) 32-41-44

Plessey CMM.
Component Maintenance Manual (Fan Motor AHM8077) 32-43-01
Airscrew Howden CMM
Component Maintenance Manual (Fan Motor AHM9050) 32-43-05

Table of Contents
CO: 9466

Page 3/4 Blank

32-43-11 Rev 10, Aug 31/07
COPYRIGHT © 2007 DUNLOP AEROSPACE LIMITED
CO: 9466 DEDALUS TECH EMAIL: adrian.paramanov@dedalustech.eu
 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

INTRODUCTION

This manual is written according to Air Transport Association Specification No. 100 for the overhaul
and/or maintenance of the Meggitt Aircraft Braking Systems (MABS) (MABS® is the registered
trademark of Meggitt Aircraft Braking Systems) assembly(ies) included. THIS MANUAL IS
APPLICABLE ONLY FOR THE OVERHAUL OF THE INCLUDED MABS PRODUCT(S) WITH
ONLY MABS PRODUCED OR APPROVED PARTS AND APPROVED PROCEDURES. THE USE
OF UNAPPROVED PARTS OR THE OMISSION OR ALTERATION OF APPROVED
PROCEDURES NEGATES THE VALIDITY OF THIS MANUAL.

The person or facility that uses unapproved procedures or omits recommended procedures to do
an overhaul or maintenance to MABS products may not rely on this manual, must do so at their
own risk and must assume product liability. All torque values and specific limits apply only to MABS
approved parts/products and must be obeyed. Any alternative procedures, limits, or materials (if
consented to in writing by MABS) must not decrease the performance of the assembly.

The Illustrated Parts List of this manual lists and illustrates only the approved parts required to do
maintenance to the assemblies in this manual. The use of unapproved parts in these assemblies
may change the product's performance capability and will nullify the product warranty. The person
or facility that puts unapproved parts in the assemblies may not utilize this manual, must do so at
their own risk and must assume product liability.

All dimensions and other values are in English units followed by the SI (International System) units.
Illustration dimensions are in inches with millimeter conversions in parentheses unless specified.
Dimensions of standard tools or parts are in English units where there are no equivalent metric
tools or parts. Illustrations are for reference only and are not to scale.

Meggitt Aircraft Braking Systems represents that the information contained in this manual is valid
only for use with MABS approved parts and procedures and was current at the time of publication
and verified by comparison to engineering documentation.

The user should make sure that this is the most recent publication before overhaul or maintenance
is performed. A dealer, distributor or Customer Support Department can tell the user if this is the
most recent manual. You may make direct inquires to the Distributor Representative-Marketing,
Meggitt Aircraft Braking Systems, Holbrook Lane, Coventry – CV6 4AA, United Kingdom or to the
Technical Publication Department on e-mail at pubs-support@meggitt.com.

If this manual and the aircraft maintenance manual do not agree on the aircraft interface
connections, use the aircraft maintenance manual. This manual may give component functions that
may or may not be used when installed on the aircraft. DEDALUS TECH

Introduction
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COPYRIGHT  2011 MEGGITT AIRCRAFT BRAKING SYSTEMS
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

NOTICE

MEGGITT AIRCRAFT BRAKING SYSTEMS (MABS) ASSUMES NO CONTRACTUAL,

WARRANTY, PRODUCT LIABILITY OR OTHER OBLIGATION FOR ANY SUBSTITUTION OF OR
ALTERATION TO ANY PART CONTAINED IN ANY MABS WHEEL OR BRAKE ASSEMBLY
INCLUDING ACCESSORIES NOT SPECIFICALLY AUTHORIZED BY MABS OR FOR ANY
OVERHAUL OR MAINTENANCE NOT PERFORMED IN ACCORDANCE WITH MABS
APPROVED PROCEDURES.

TYPE CERTIFICATE NOTICE

This assembly for commercial transport usage has been fully laboratory tested and qualified to the
specification requirements of the applicable airframe manufacturer and is certified on the applicable
aircraft.

The use of parts manufactured by sources other than MABS and not approved by MABS in any
assembly that has the MABS name and TSO marking will relieve MABS of any warranty obligation
relating to the assembly upon which the unapproved part has been installed and will relieve MABS
of all product liability responsibility for that assembly or any other assemblies on the aircraft and the
aircraft it may be used on.

EASA regulations subject Meggitt Aircraft Braking Systems, the airframe manufacturer and the
operator to constant surveillance to assure that proper Quality Assurance materials and processing
controls are maintained in order to provide replacement parts that are the same quality as the parts
originally certified in this assembly.

DATA RIGHTS

The cost for this manual includes printing and shipping costs only and does not include purchase of
the data or design. It does not give the purchaser any rights or patent to print or make parts from
this data.

SAFETY SUMMARY

Obey all manufacturer's Warnings and Cautions for all materials specified in this manual. In this
manual, Warnings and Cautions come before the procedure to which they apply. Failure to obey a
Warning may cause personal injury. Failure to obey a Caution may cause damage to equipment or
components. Wear protective clothing approved for the materials and tools being used.

DEDALUS TECH

Introduction
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

ON-CONDITION MAINTENANCE

Each operator must schedule maintenance based on the condition of his equipment. Meggitt
Aircraft Braking Systems recommends that on-condition maintenance be performed.

ATA Common Support Data Dictionary (CSDD) defines on-condition maintenance as

follows:

A primary maintenance process having repetitive inspections or tests to determine the condition of
units, systems or portions of structure with regard to continued serviceability (corrective action is
taken when required by item condition).

MABS CUSTOMER SUPPORT LOCATIONS

To locate your dedicated field customer support representative, go to www.meggitt-mabs.com and

click on the Field support link.

DEDALUS TECH

Introduction
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

(3) Electrical connection to the transducer is by a mating plug on an extended cable

located inside the axle.

(4) The wheel rotational movement is transmitted to the transducer via a drive coupling,
secured to the transducer splined shaft; engaging with the drive spring of the cover
assembly which is bolted to the wheel.

B. Fan and Transducer Installation (Ref. Figure 2)

(1) A fan and transducer installation comprises an electric motor driving a brake cooling
fan, a protective debris guard which is secured to the wheel drives the transducer via
a shaft passing through the fan motor.

(2) The transducer is held in its housing by a spring and circlip; the complete assembly is
then bolted to the rear of the motor mount. The bearing, installed between the
transducer housing and the motor mount, supports the drive shaft and prevents end
loads being transmitted to the transducer splined shaft. A socket head screw,
installed in the front face of the transducer, engages a recess in the transducer
housing to prevent the body of the transducer rotating during operation.

(3) The fan motor is secured in the motor mount by an ‘O’ ring at the transducer end and
by the three attachment screws at the impeller end. The motor is mounted in such a
manner as to allow a flow of air past the motor body.

(4) The impeller, keyed to the motor shaft, is secured by a spring washer and hollow bolt.
The impeller is protected by a fan duct assembly bolted to the main wheel hub and
debris guard assembly secured to the fan duct assembly with a circlip.

(5) Main wheel drive is transmitted to the transducer via the fan duct assembly, the
debris guard splined driver and the drive shaft assembly.

2. Leading Particulars

A. Transducer Installation Only

Transducer Electrical Connection

Part No.
Part No. Mating Plug

AC65934 ACM28076 Matrix Corporation

MT36K-0803S6
(M83723/95K0803N)
MIL-DTL-83723 Series 3
DEDALUS TECH

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

B. Transducer and Fan Installations

Transducer Electrical Connection

Part No.
Part No. Mating Plug

AHA1130 (100 Series) ACM28076 Matrix Corporation

AHA1162 (200 Series) MT36K-0803S6
AHA1577 (100 Series) (M83723/95K0803N)
AHA1578 (200 Series) MIL-DTL-83723 Series 3

Motor Electrical Connection

Part No.
Part No. Mating Plug

AHA1130 (100 Series) AHM8077 Matrix Corporation

AHA1162 (200 Series) (Plessey No. M422M15) (M83723/83K0803N)
AHA1577 (100 Series) MIL-DTL-83723 Series 3
AHA1578 (200 Series)

Part No. Estimated Weight

AHA1130 (100 Series) 12.625 lbs

AHA1162 (200 Series) (5,74 kg)

AHA1577 (100 Series) 12.75 lbs

AHA1578 (200 Series) (5,78 kg)

DEDALUS TECH

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

C. Transducer and Fan Installations (AHA1577, AHA1578 Figure 302)

(1) Remove three screws (10A) and remove the debris guard assembly (20A)
from the duct assembly (210A).

(2) Using the special tool (Item No.6) remove the impeller bolt housing
(160) together with the impeller assembly (90) from the motor drive
shaft (360).

(3) Using the special tool (Item No.2) remove the duct assembly from the
wheel.

CAUTION: TO OBVIATE POSSIBILITY OF DAMAGE TO THE DUCT ASSEMBLY, THE

ASSEMBLY MUST BE REMOVED.

(4) Remove installations as detailed in the Aircraft Maintenance Manual.

3. Disassembly Procedure

A. Transducer Installation (AC65934 Figure 301)

(1) Using the special tool (Item No.4) remove the drive coupling
attachment bolt (80) and shakeproof washer (90), together with the
drive coupling (100) from the splined shaft.

(2) Remove the three transducer attachment bolts (110) and remove the
transducer from the mounting sleeve (120).

B. Transducer and Fan Installations (AHA1130, AHA1162, AHAl577, AHA1578

Figure 302)

(1) Using the special tool (Item No.9) remove the two transducer housing
screws (380) and washers (390) together with the housing (400) from
the motor mount assembly (250).

(2) Remove the circlip (320) from the transducer housing (400) and
withdraw spring retainer (330), spring (340) and transducer from the
housing.

(3) Gain access through the motor mount aperture and remove the circlip
(350) from the drive shaft housing and remove the drive shaft (360)
from the fan motor (300) and motor mount bearing (370).
DEDALUS TECH

(4) Remove the bearing (370) from the recess at the rear of the motor
mount assembly (250) and discard the bearing (370).
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COMPONENT MAINTENANCE MANUAL
PART NOS.AC65934, AHA1130, AHA1162

10 WIRE C I RC LIP (A HA 1130, A HA 1162 )

10A SCREW (AHA1577, AHA1578)
20 DEBRIS GUARD ASSY (AHA1130, AHA1162)
20A DEBRIS GUARD ASSY (AHA1577, AHA1578)
30 SELF ADHESIVE LABEL
40 RIVET
50 PLATE RETAINING
60 SPLINED SLEEVE
70 RIVET (AHA1130, AHA1162)
75 LOCATION PEG (AHA1130, AHA1162)
80 DEBRIS GUARD SUB-ASSY
90 IMPELLER ASSY
100 CIRCLIP
110 BOLT HOUSING ASSY
120 CIRCLIP
130 WASHER
140 SPRING PLATE
150 SEAL
160 BOLT HOUSING
170 SPRING WASHER
180 IMPELLER
190 DUCT ASSY ATTACHMENT BOLT
200 WASHER
210 DUCT ASSY (AHA1130, AHA1162)
210A DUCT ASSY (AHA1577, AHA1578)

I
220 SEALING RING
222 DUCT SUB-ASSY
224 RIVET
226 ANCHOR NUT
230 MOTOR ATTACHMENT SCREW
240 WASHER
250 MOTOR MOUNT ASSY
260 RUBBER PAD
270 SUPPORT PLATE
290 MOTOR MOUNT
300 MOTOR
310 SEALING RING
320 CIRCLIP
330 SPRING RETAI NER
340 SPRING
350 CIRCLIP
360 DRIVE SHAFT ASSY
370 BEARING
380 TRANSDUCER HOUSING ATTACHMENT
SCREW
390 WASHER
DEDALUS TECH

400 TRANSDUCER HOUS I NG

I Key to Figure 302

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

DEDALUS TECH

Exploded View of
Transducer and Fan Installations (AHA1130, AHA1162, AHA1577, AHA1578)
Figure 302

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

(7) Using the special tool (Item No. 9) remove the three motor
attachment screws (230) and washers (240) from the motor mount
assembly (250).

(8) Slide the fan motor (300) out of the motor mount assembly (250) and
remove the ’O’ ring (310) from the groove in the fan motor.

4. Disassembly of Impeller

A. Remove the circlip (100) holding the bolt housing assembly (110) in the
impeller (180). Remove the bolt housing assembly with the spring washer
(170).

B. Remove the circlip (120) from the bolt housing assembly (110). Remove the
washer (130), spring plate (140) and seal (150) from the impeller bolt
housing. Discard the removed seal which is to be replaced on assembly.

DEDALUS TECH

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934

CLEANING

1. Equipment and Materials

NOTE: Equivalent alternatives can be used for listed items.

A. Equipment

(1) Vacuum cleaner, fitted with a small nozzle.

B. Materials

Material Specification Supplier

Hydrocarbon Class III blend of hydrocarbons: Local supply, or

cleaning fluid
- Lotoxane Reabrook Limited
(Class III) T/A Arrow Chemicals
Rawdon Road
Moira Swadlincote
Derbyshire
DE12 6DA
United Kingdom
(Vendor Code U0698)
- Multisol Multisol Limited
(Class III) Welsh House
83 Welsh Row
NANTWICH
Cheshire
CW5 5ET
United Kingdom
(Vendor Code KCVF8)

Soft Lint-free cloth - Local supply

Low pressure, - Local supply

clean, dry air
supply

DEDALUS TECH

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

2. Cleaninq Procedure

WARNING: YOU MUST OBEY THE HEALTH AND SAFETY INSTRUCTIONS OF THE
MANUFACTURER AND YOUR LOCAL INSTRUCTIONS WHEN YOU USE THE
CONSUMABLE MATERIALS.

CAUTION: DO NOT LET HYDROCARBON CLEANING FLUID, OR OTHER CLEANING MATERIALS,

COME INTO CONTACT WITH RUBBER COMPONENTS.

A. Transducer and Fan Motor

(1) Clean the transducer in accordance with the instructions given in

Component Maintenance Manual 32-41-44.

(2) Clean the fan motor in accordance with the instructions given in
Plessey Component Maintenance Manual 32-43-01.

B. Other Metallic Components

(1) Remove any accumulations of dust from the installation components

using a small nozzled vacuum cleaner.

(2) Clean the components externally with a soft lint free cloth,
moistened if necessary with hydrocarbon cleaning fluid. Fully dry
the components after cleaning, using a low pressure, clean, dry air
supply.

DEDALUS TECH

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934
CHECK

1. Check Procedure

A. Transducer

Examine the transducer as detailed in Component Maintenance Manual 32-41-44.

B. Fan Motor

Examine the fan motor as detailed in the manufacturer’s manual, Plessey Component
Maintenance Manual 32-43-01.

C. Transducer Installation Components (Figure 301)

(1) Examine drive cover assembly (30) for damage and corrosion, paying particular
attention to the drive spring (60).

(2) Examine drive coupling (100) and mounting sleeve (120) for damage and corrosion,
paying particular attention to the splined hole of the drive coupling.

(3) Examine all other components for damage or corrosion. Renew defective
components.

D. Fan and Transducer Installation Components (Figure 302)

(1) Examine impeller assembly (90) for surface damage, corrosion and cleanliness of
the bore. Renew a defective impeller.

(2) Examine debris guard assembly (20, AHA1130 and AHA1162 or 20A, AHA1577
and AHA1578), circlip wire (10, AHA1130 and AHA1162) and duct assembly
(210, AHA1130 and AHA1162 or 210A, AHA1577 and AHA1578) for damage and
distortion paying particular attention to the security and cleanliness of the splined
sleeve (60). Renew defective components.

(3) Examine motor mount assembly (250) and transducer housing assembly (400) for
surface damage or corrosion, paying particular attention to the cleanliness of the
mounting surfaces and the serviceability of the thread inserts.

(4) Examine rubber pads (260) at the rear of the fan motor mount for damage paying
particular attention to the security of the rubber pads. Renew a defective rubber
pad.

(5) Examine sealing ring (220) on the duct assembly for damage and security. Renew
DEDALUS TECH

a defective sealing ring.

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

(6) Examine all other components for damage or corrosion. Renew

defective components.

NOTE: Refer to Repair; for repair procedures to various

installation components.

NOTE: The splined sleeve and drive shaft assembly are ’lifed
items’. Refer to the Aircraft Maintenance Manual.

DEDALUS TECH
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934
REPAIR

Repair No. 1 - Repair of Damage to Aluminium Alloy Components

1. Materials

NOTE: Equivalent substitutes may be used for listed items.

Material Specification Supplier

Alocrom 1200 powder DEF STAN 03-18 ICI Paints

(MIL-DTL-5541) Wexham Road
Slough
Berkshire
SL2 5DS
United Kingdom
(Vendor Code K2054)
Nitric acid - Local supply
(specific gravity 1.42)
Norton R222 J weight - Saint-Gobain Abrasives Limited
P100 cloth Doxey Road
Stafford
ST16 1EA
United Kingdom
(Vendor code KC1D9)
Nylon brush - Local supply
or
Cotton swabs

2. Repair Procedures

A. Removal of Damage

(1) Carefully dress out superficial cuts and abrasions with a smooth file and
Norton R222 J weight P100 cloth or finer as necessary blending any sharp edges to
maintain the essential curvature (where applicable) as far as possible. The
maximum permitted depth of dressing is 0.020 in. (0,50 mm), components
damaged or corroded beyond the stated limit must be rejected.

B. Cleaning
DEDALUS TECH

(1) Thoroughly clean the dressed areas as detailed in Cleaning, Para. 2.B.

C. Restoration of Protective Treatment

(1) Mask off areas not requiring anti-corrosive treatment.

Repair No. 1
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

(2) Prepare the Alocrom 1200 solution and treat the dressed areas as follows:

WARNING: DO NOT ALLOW ALOCROM 1200 SOLUTION TO COME INTO

CONTACT WITH THE SKIN. OPERATORS USING THIS SOLUTION
MUST WEAR EYE SHIELDS, RUBBER GLOVES AND APRON.

(a) Prepare the Alocrom 1200 solution in the proportions of:

Alocrom 1200 powder 2.25 oz. (64 g)

Nitric acid (specific gravity 1.42) 7 ml

Water 3.52 pints (2 litres)

Dissolve the Alocrom 1200 powder in water, then add the nitric acid. Finally
top up with water to the required volume and stir well.

CAUTION: COTTON WOOL SWABS CONTAMINATED WITH ALOCROM 1200

SOLUTION MUST NOT BE ALLOWED TO DRY OUT AS THEY WILL
CONSTITUTE A FIRE HAZARD. THOROUGHLY WASH THEM IN
COLD WATER BEFORE DISCARDING.

(b) Apply the Alocrom 1200 solution liberally to the dressed area using a nylon
brush or cotton wool swab, until an iridescent or light brown film is formed.

(c) Thoroughly rinse with cold water, then dry with warm air.

(3) If applicable, repair surface paint finish as detailed in Repair No.3.

DEDALUS TECH

Repair No. 1
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COMPONENT MAINTENANCE MANUAL
PART NOS.AC65934, AHA1130, AHA1162

Repair No.2 - Renewal of Wire Threads

1. Special Tools and Equipment

NOTE: Equivalent substitutes may be used for listed items.

A. Special Tools

Tool List
Item No. Description Remarks

10 Extractor Tool For renewal of wire

thread insert

11 I nsertion Tool )
) For fitting of wire
12 Tang Break-off Tool ) thread insert

2. Repair Procedure

A. Removal of Damaged Insert

(1) Remove the unserviceable wire thread insert using Tool Item No.
10.

B. Inspection of Bore Threads

(1) Visually inspect the bore for thread damage and burrs. Renew
a component if damaged.

C. Replacement of Insert

(1) Fit a new wire thread insert using Tool Item No.11.

(2) Using Tool Item No.12, bread off and discard the wire thread
insert.

DEDALUS TECH

REPAIR

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

REPAIR
Repair No. 3 – Repair of Paint Finish

1. Special Tools, Equipments and Materials

NOTE: Equivalent alternatives can be used for listed items.

A. Equipment
(1) An air circulating oven which can give a controlled temperature of 90 deg. C
(194 deg. F).
(2) Paint spray equipment and room.

(3) Immersion stripper tank (only necessary for paint stripper and peachstone blast
system).
B. Materials

Material Specification Supplier (Vendor Code)

Paint stripper Ardrox 2320 Chemetall plc

(SAE AMS1375) Denbigh Road
Bletchley
Milton Keynes, MK1 1PB
United Kingdom
Peachstone blast DASIC D103 DASIC International Limited
Winchester Hill
ROMSEY
Hampshire SO51 7YD
United Kingdom
(Vendor Code U3984)
Plastic bead blast MIL-P-85891 Use any approved supplier
(Type I and II)
Norton R222 J weight P100 - Saint-Gobain Abrasives
cloth Limited
Doxey Road
Stafford
ST16 1EA
United Kingdom
(Vendor Code KC1D9)
Epoxy primer PR143 PPG Industries (UK) Ltd
DEDALUS TECH

Darlington Road
SHILDON
DL4 2QP
United Kingdom
Continued...

Repair No. 3
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

Material Specification Supplier (Vendor Code)

Activator No. 143 As above

Thinner T17 (TH84) As above

Epoxy finish silver EC75 As above

Activator No. 65 As above

Polyurethane finish FE93 As above

Activator No. 93 As above

Thinner T115 As above

2-pack low VOC polyurethane IP6-C9031 Indestructible Paint Limited

topcoat 19-25 Pentos Drive
(Color: Silver) Sparkhill
Birmingham
NOTE: Color Silver is also referred as Light Grey by B11 3TA
the paint manufacturer’s. United Kingdom
(Vendor Code K3504)

2-pack low VOC polyurethane IP6-CAT As above

catalyst

Reducer/Thinner IP-MEG-REDUCER As above

2-Butanone (Methyl-Ethyl- - Federal Specifications

Ketone (MEK)) Promulgated By General
Services Administration
Washington DC
100 Bureau DR
Natl Institute Stds & Tech
MD 20899
Montgomery
USA
(Vendor Code 81348)

Cloth, lint-free - Local Supply

DEDALUS TECH

2. References and General Instructions

A. References

(1) Disassembly.

Repair No. 3
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FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

(2) Cleaning.

(3) Repair No. 1.

B. General Instructions

(1) Complete your selection of paint removal procedure to cause minimum damage to
the impeller.

(2) Meggitt Aircraft Braking Systems do not give approval to procedures that use
chemicals to fully remove paint protection from an aluminium alloy impeller.

CAUTION: SOLVENT TYPE PAINT REMOVERS THAT IS TOO COARSE WILL

DECREASE THE FATIGUE STRENGTH OF THE IMPELLER AND WILL
REMOVE THE PRE-PAINT CONVERSION TREATMENT
(REF. REPAIR No. 1).

CAUTION: ABRASIVE BLAST MATERIAL (PLASTIC BEAD AND PEACHSTONE)

MUST BE FREE OF CONTAMINATION AND PARTICLES THAT CAN
CAUSE ELECTROLYTIC ACTION.

(3) Make sure that all threads and other areas where paint removal is not necessary
have masking protection (or are sealed with a plug).

(4) Limit the time of paint removal to the minimum necessary.

(5) After paint removal, use a spray of filtered air to remove all unwanted material from
the impeller.

(6) Examine the impeller. Repair all damage (Ref. Repair No. 1).

(7) Do all paint procedures in an area with a good flow of air.

(8) Prepare materials and complete the paint protection in an area that has a
temperature of between 15,5 deg. C and 21,0 deg. C (60 deg. F and 70 deg. F).
Humidity must be less than 75%.

(9) Air drying must be carried out in a clean, dust free area, with the temperature
maintained above 15,5 deg. C (60 deg. F) and relative humidity below 75%.

(10) Force drying or stoving must be carried out in air-circulated oven. The impeller
should be allowed to reach oven temperature slowly to prevent blistering, and
maintained at the specified temperature for the time required.
DEDALUS TECH

(11) Make sure that the impeller is clean.

(12) Make sure that the impeller is serviceable. Do repairs as necessary.

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FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

(13) Make sure that all threads and other areas, where paint is not necessary, have
protection.

(14) Always let a force dried impeller cool to a temperature of 21,0 deg. C to
15,5 deg. C (70 deg. F to 60 deg. F) before you apply more paint.

(15) It is recommended not to use the repaired impeller for the first week after a paint
protection repair (maximum solvent resistance occurs after seven days).

3. Removal of Protective Treatment

A. Procedure Selection
(1) Procedures used to remove paint protection can cause damage to the metal of the
impeller. Removal procedures permitted by Meggitt Aircraft Braking Systems (in the
order of preference) for the impeller of aluminium alloy are:

Order of Ref.
Procedure Comments
Preference (para)

1 Plastic bead blast 3.B.(1)

2 Paint stripper and 3.B.(2)

peachstone blast

3 Localised removal 3.B.(3)

by dressing

NOTE: Localised removal by dressing must be done after consultation with the
MABS Laboratory.
(2) The cause to do paint removal, the shape of area and the type of impeller can all
effect which procedure you use. This repair does not give the full instructions for
paint removal. Procedures included are:
- Plastic bead blast
- Paint stripper and peachstone blast
- Localised removal by dressing.

(3) Immersion in solvent based paint removers for long periods can decrease the
fatigue resistance of a metal impeller and thus, immersion time should be kept to a
minimum.

(4) Blasting a surface for long periods can cause some damage to any surface
DEDALUS TECH

treatments, thus blasting times must be kept to a minimum.

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

B. Paint Removal Procedures

(1) Plastic Bead Blast
WARNING: OBEY THE INSTRUCTIONS SPECIFIED BY THE MAKER OF THE
BLAST EQUIPMENT AND PLASTIC BEAD MATERIAL THAT YOU
USE. THE USE OF BLAST EQUIPMENT CAN BE DANGEROUS.
CAUTION: TO DO BEAD BLAST FOR TOO MUCH TIME (IN ONE AREA) CAN
DAMAGE THE SURFACE TREATMENT AND THEN THE BARE
METAL.

(a) The plastic media must meet the requirements of MIL-P-85891 (Type I or II)
and have a maximum hardness of 3.5 MOH or 62 Barcol.

(b) The plastic media must have a size of US screen 20 to 40 mesh (0.033 to
0.017 in. or 841 to 400 µm).

(c) Blasting parameters are dependent on the hardness of the plastic media
used for paint removal. Plastic bead blast as per para 1 or 2 described below:

1 If the plastic media is MIL-P-85891 Type I with 34 - 42 Barcol hardness,

then plastic bead blast as follows:

a Hold the spray head of the blast machine at a distance of 12 to 24 in.

(305 to 610 mm) from the surface to be blasted.

b Hold at an angle of about 45 degrees.

c Plastic bead blast at a pressure of 40 to 60 psi (2,76 to 4,14 bar).

2 If the plastic media used is MIL-P-85891 Type II with 54 - 62 Barcol

hardness, then plastic bead blast as follows:

a Hold the spray head of the blast machine at a distance of 18 to 24 in.

(457 to 610 mm) from the surface to be blasted.

b Hold at an angle of about 45 degrees.

c Plastic bead blast at a pressure of less than 40 psi (2,76 bar).

(d) The blasting time must be restricted to the minimum required to remove the
paint. Excessive blasting can damage or remove the protective surface
pre-treatment or cause damage to the underlying metal.
DEDALUS TECH

Repair No. 3
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FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

(2) Paint Stripper and Peachstone Blast

WARNING: CHEMICALS USED IN THIS PROCESS ARE HAZARDOUS.

BEFORE USE, MAKE SURE THAT YOU KNOW THE SAFETY
PRECAUTIONS AND FIRST AID INSTRUCTIONS ON:
- THE LABEL ON THE CONTAINER IT WAS SUPPLIED IN
- ITS MATERIAL SAFETY DATA SHEET
- YOUR LOCAL SAFETY REGULATIONS.

NOTE: This procedure has two stages. During stage 1 (immersion), the impeller is
fully below stripper liquid (in the stripper tank) for sufficient time to make
the paint layers soft. During stage 2 (peachstone blast), the soft paint
layers are removed with a blast of peachstone.

(a) Do stage 1 (Immersion)

1 The solution must be heated to a temperature of between 35 and

45 deg. C (95 and 113 deg. F).
2 Put the painted impeller below the stripper solution (in tank) to make the
paint soft.
3 The impeller must be immersed for less than four hours.
4 After immersing for minimum time necessary, remove the impeller from
the stripper tank and rinse fully in an adjoining tank containing water at 40
to 50 deg. C (104 to 122 deg. F).

(b) Do stage 2 (Peachstone blast).

1 After rinsing fully, the impeller must be placed in a blasting chamber.

2 Hold the spray head of the blast machine at a distance of 4 to 12 in.

(102 to 305 mm) from the surface to be blasted. Remove the paint layers.

3 Peachstone blast at a pressure of 30 to 45 psi (2 to 3 bar).

(3) Localised Removal by Dressing

NOTES: 1. Localised Removal by Dressing must be done after consultation with

the MABS Laboratory.

2. This method must be used to remove paint from small areas (not
larger than 2 in2.) where masking has failed.
DEDALUS TECH

(a) Use 400 grit SiC paper to carefully remove the paint out.

NOTE: Make sure that the underlying surface treatment is not damaged
while removing the paint.

Repair No. 3
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

(b) If there is any damage on the surface treatment, then repair the surface finish
of the impeller and apply Alocrom 1200 solution (Ref. Repair No. 1).

4. To Prepare Paint Materials

WARNING: OBEY THE HEALTH AND SAFETY INSTRUCTIONS OF THE MANUFACTURER

AND YOUR LOCAL INSTRUCTIONS WHEN YOU USE A CONSUMABLE
MATERIAL.
A. Mixing Instructions for Epoxy Primer PR143

(1) You must follow the applicable paint manufacturer’s instructions for mixing paint
material epoxy primer PR143.

B. Mixing Instructions for Epoxy Finish EC75 Silver

(1) You must follow the applicable paint manufacturer’s instructions for mixing paint
material Epoxy Finish EC75 Silver.

C. Mixing Instructions for Polyurethane Finish FE93

NOTE: If polyurethane finish FE93 is not available, use 2-Pack low VOC Polyurethane
Topcoat IP6-C9031 (Ref. Para 4.D.).

(1) You must follow the applicable paint manufacturer’s instructions for mixing paint
material Polyurethane Finish FE93.

D. Mixing Instructions for 2-Pack Low VOC Polyurethane Topcoat IP6-C9031

(1) You must follow the applicable paint manufacturer’s instructions for mixing paint
material 2-Pack Low VOC Polyurethane Topcoat IP6-C9031.

5. To Prepare the Impeller

A. For a General Repair

(1) Fully disassemble the impeller assembly (Ref. Disassembly).
(2) Clean the impeller (Ref. Cleaning).
(3) Remove unwanted paint material from the impeller (Ref. para. 3).

(4) Repair the surface finish of the impeller and apply alocrom 1200 solution
(Ref. Repair No. 1).
DEDALUS TECH

(5) Apply masking protection to the periphery of blades and bore where paint
protection is unwanted.

Repair No. 3
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FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

B. For Touch-up Repair (Less than 5% of Total Surface Area)

(1) Clean the impeller (Ref. Cleaning).
(2) Make sure the surface of the paint damaged area is satisfactory for paint repair
(Ref. Repair No. 1).

(3) Use Norton R222 J weight P100 cloth or finer as necessary to remove damage or
corrosion. Make sure that there are no sharp edges and that the surface of the
repair has a smooth contour.

WARNING: OBEY THE HEALTH AND SAFETY INSTRUCTIONS OF THE

MANUFACTURER AND YOUR LOCAL INSTRUCTIONS WHEN YOU USE A
CONSUMABLE MATERIAL.

(4) Use a lint-free cloth made moist with 2-Butanone (Methyl-Ethyl-Ketone (MEK)) to
clean the area of repair. Let the surface dry.

(5) Repair the surface finish of the impeller and apply alocrom 1200 solution
(Ref. Repair No. 1).

(6) Apply masking protection to the periphery of blades and bore where paint
protection is unwanted.

6. To Apply Paint Protection

NOTES: 1. Method II is an alternative for Method I.

2. If polyurethane finish FE93 (Ref. Para 6.A. and 6.C.) is not available, use
2-Pack low VOC Polyurethane Topcoat IP6-C9031 (Ref. Para 6.B. and 6.D.).

A. General Repair – Method I (Polyurethane Finish FE93)

WARNING: OBEY THE HEALTH AND SAFETY INSTRUCTIONS OF THE

MANUFACTURER AND YOUR LOCAL INSTRUCTIONS WHEN YOU USE A
CONSUMABLE MATERIAL.

NOTES: 1. Make sure that too much paint is not applied in circlip grooves.

2. There must be no runs in this area. A light overspray is permitted in hole

for bolt, where there is usually no paint.

(1) Apply one double track spray coat of epoxy primer PR143. Apply the paint to give a
minimum dry thickness of 0.0005 in. (13 μm).
DEDALUS TECH

(2) Air dry for four hours or force dry at 90 deg. C (194 deg. F) for one hour.

(3) Apply one double track spray coat of epoxy finish EC75 silver. Apply the paint to
give a minimum dry thickness of 0.0005 in. (13 μm).

Repair No. 3
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FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

(4) Air dry for four hours or force dry at 90 deg. C (194 deg. F) for one hour.

(5) Apply one double track spray coat of epoxy primer PR143. Apply the paint to give a
minimum dry thickness of 0.0005 in. (13 μm).

(6) Air dry for four hours or force dry at 90 deg. C (194 deg. F) for one hour.

(7) Mask the areas of the impeller that do not require polyurethane finish FE93.

(8) Apply one double track spray coat of polyurethane finish FE93.

(9) Allow polyurethane finish FE93 to air dry for one hour.

(10) Apply second or more double track coat of polyurethane finish FE93.
Do this until there is sufficient coats (minimum of two) to give a minimum dry
thickness of 0.0015 in. (38 μm).

(11) Air dry the last layer of polyurethane finish FE93 for six hours (or more) or flash-off
for 15 minutes at an ambient temperature and force dry at 90 deg. C (194 deg. F)
for one hour.

(12) Make sure that the paint protection:

- Has a satisfactory finish (some orange peel effect is permitted, but no
runs, sags, pinholes, streaks, blisters, lifting or other damage)
- Has a minimum total thickness of 0.003 in. (76 μm).
The dry thickness of the system must be as follows:

Epoxy Primer PR143 (1 coat) 0.0005 in. (13 μm) min

Epoxy Finish EC 75 Silver (1 coat) 0.0005 in. (13 μm) min
Epoxy Primer PR143 (1 coat) 0.0005 in. (13 μm) min
Polyurethane Finish FE 93 0.0015 in. (38 μm) min
(2 coats min)
Total film thickness 0.003 to 0.0045 in. (76 to 114 μm)

(13) Remove the masking protection from the periphery of blades and bores.

DEDALUS TECH

Repair No. 3
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

B. General Repair – Method II (2-Pack Low VOC Polyurethane Topcoat IP6-C9031)

WARNING: OBEY THE HEALTH AND SAFETY INSTRUCTIONS OF THE

MANUFACTURER AND YOUR LOCAL INSTRUCTIONS WHEN YOU USE A
CONSUMABLE MATERIAL.

NOTES: 1. Make sure that too much paint is not applied in circlip grooves.

2. There must be no runs in this area. A light overspray is permitted in hole

for bolt, where there is usually no paint.

(1) Apply one double track spray coat of epoxy primer PR143. Apply the paint to give a
minimum dry thickness of 0.0005 in. (13 μm).

(2) Air dry for four hours or force dry at 90 deg. C (194 deg. F) for one hour.

(3) Apply one double track spray coat of epoxy finish EC75 silver. Apply the paint to
give a minimum dry thickness of 0.0005 in. (13 μm).

(4) Air dry for four hours or force dry at 90 deg. C (194 deg. F) for one hour.

(5) Apply one double track spray coat of epoxy primer PR143. Apply the paint to give a
minimum dry thickness of 0.0005 in. (13 μm).

(6) Air dry for four hours or force dry at 90 deg. C (194 deg. F) for one hour.

(7) Mask the areas of the impeller that do not require 2-pack low VOC polyurethane
topcoat IP6-C9031.

(8) Apply one double track spray coat of 2-pack low VOC polyurethane topcoat
IP6-C9031.

(9) Allow 2-pack low VOC polyurethane topcoat IP6-C9031 to air dry for
15 minutes.

(10) Apply second or more double track coat of 2-pack low VOC polyurethane topcoat
IP6-C9031. Do this until there is sufficient coats (minimum of two) to give a
minimum dry thickness of 0.0015 in. (38 μm).

(11) Air dry the last layer of 2-pack low VOC polyurethane topcoat IP6-C9031 for
24 hours (or more) or flash off for 30 minutes minimum at ambient temperature and
force dry at 90 deg. C (194 deg. F) for 90 minutes.
DEDALUS TECH

(12) Allow 2-pack low VOC polyurethane topcoat IP6-C9031 to cool for 30 minutes in
ambient temperature before touching.

Repair No. 3
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

(13) Make sure that the paint protection:

- Has a satisfactory finish (some orange peel effect is permitted, but no
runs, sags, pinholes, streaks, blisters, lifting or other damage)
- Has a minimum total thickness of 0.003 in. (76 μm).

The dry thickness of the system must be as follows:

Epoxy Primer PR143 (1 coat) 0.0005 in. (13 μm) min

Epoxy Finish EC 75 Silver (1 coat) 0.0005 in. (13 μm) min
Epoxy Primer PR143 (1 coat) 0.0005 in. (13 μm) min
2-pack low VOC polyurethane topcoat 0.0015 in. (38 μm) min
IP6-C9031 (2 coats min)
Total film thickness 0.003 to 0.0045 in. (76 to 114 μm)
(14) Remove the masking protection from the periphery of blades and bores.

C. Touch-up Repair – Method I (Polyurethane Finish FE93)

WARNING: OBEY THE HEALTH AND SAFETY INSTRUCTIONS OF THE
MANUFACTURER AND YOUR LOCAL INSTRUCTIONS WHEN YOU USE A
CONSUMABLE MATERIAL.

(1) Apply a thin layer of epoxy primer PR143 to the area of repair. Make sure that the
edges of the epoxy primer PR143 overlap the edges of the serviceable paint.

(2) Allow to air dry for four hours.

(3) Apply one layer of epoxy finish EC75 silver.

(4) Allow to air dry for four hours.

(5) Apply a thin layer of epoxy primer PR143.

(6) Allow to air dry for four hours.

(7) Mask the areas of the impeller that do not require polyurethane finish FE93.

(8) Apply one layer of polyurethane finish FE93. Make sure that the contours of the
repair and the serviceable paint are smooth.
NOTE: If it is necessary to apply two or more layers of polyurethane finish FE93,
then let the paint dry in air for 15 minutes between applications.
DEDALUS TECH

(9) Let the polyurethane finish FE93 paint to air dry for more than six hours.

(10) Remove the masking protection from the periphery of blades and bores.

Repair No. 3
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

D. Touch-up Repair – Method II (2-Pack Low VOC Polyurethane Topcoat IP6-C9031)

WARNING: OBEY THE HEALTH AND SAFETY INSTRUCTIONS OF THE
MANUFACTURER AND YOUR LOCAL INSTRUCTIONS WHEN YOU USE A
CONSUMABLE MATERIAL.

(1) Apply a thin layer of epoxy primer PR143 to the area of repair. Make sure that the
edges of the epoxy primer PR143 overlap the edges of the serviceable paint.

(2) Allow to air dry for four hours.

(3) Apply one layer of epoxy finish EC75 silver.

(4) Allow to air dry for four hours.

(5) Apply a thin layer of epoxy primer PR143.

(6) Allow to air dry for four hours.

(7) Mask the areas of the impeller that do not require 2-pack low VOC polyurethane
topcoat IP6-C9031.

(8) Apply one layer of 2-pack low VOC polyurethane topcoat IP6-C9031. Make sure
that the contours of the repair and the serviceable paint are smooth.
NOTE: If it is necessary to apply two or more layers of 2-pack low VOC
polyurethane topcoat IP6-C9031 then let the paint dry in air for 15 minutes
between applications.
(9) Let the 2-pack low VOC polyurethane topcoat IP6-C9031 to air dry for
24 hours.
(10) Remove the masking protection from the periphery of blades and bores.

DEDALUS TECH

Repair No. 3
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934
REPAIR

Repair No. 4 - Renewal of Motor Mount Rubber Pads

1. Materials

NOTE: Equivalent alternatives can be used for listed items.

Material Specification Supplier

Dow Corning 3145 RTV MIL-A-46146 TYPE 1 Dow Corning Ltd

Adhesive/Sealant Meriden Business Park
Copse Drive
Primer Dow Corning 1204 Allesley Coventry
Warks CV5 9RG United Kingdom
(Vendor code K7750)

Hydrocarbon cleaning Class III blend of Local supply, or

fluid hydrocarbons:

- Lotoxane Reabrook Limited

(Class III) T/A Arrow Chemicals
Rawdon Road
Moira Swadlincote
Derbyshire DE12 6DA
United Kingdom
(Vendor code U0698)

- Multisol Multisol Ltd

(Class III) Welsh House
83 Welsh Row
NANTWICH
Cheshire CW5 5ET
United Kingdom
(Vendor code KCVF8)

Acetone - Local Supply

Norton R222 J weight - Saint-Gobain Abrasives Limited

P100 Cloth Doxey Road
Stafford ST16 1EA
United Kingdom
(Vendor code KC1D9)
DEDALUS TECH

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AHA1578 AND AC65934
2. Repair Procedure

A. Removal of Defective Pads

(1) Remove the defective rubber pad together with the support plate from the motor
mount.

B. Cleaning

WARNING: YOU MUST OBEY THE HEALTH AND SAFETY INSTRUCTIONS OF THE
MANUFACTURER AND YOUR LOCAL INSTRUCTIONS WHEN YOU USE
THE CONSUMABLE MATERIALS.

(1) Clean and degrease the motor mount fixing holes with hydrocarbon cleaning fluid
ensuring that all adhesive/sealant is removed.

(2) If the support plate is not damaged, then use hydrocarbon cleaning fluid to clean
the support plate. Make sure that all of the old sealant/adhesive is removed.

(3) Rinse cleaned components in water and dry using acetone. The rubber pad
mounting faces must be roughened with Norton R222 J weight P100 cloth and
wiped with acetone.

C. Replacement of Pads

(1) Apply Dow Corning 1204 Prime Coat to the metal surface of the motor mount and
allow to dry for one hour at room temperature.

(2) Apply a layer of Dow Corning 3145 RTV adhesive to the primed surface in a
uniform thickness of 0.010 to 0.030 in. (0,25 to 0,75 mm).

(3) Press the rubber pad into the adhesive with sufficient pressure to displace excess
adhesive.

(4) Allow adhesive/sealant to cure for 24-72 hours at room temperature and 20%, or
higher, relative humidity before use.

(5) Optimum physical and electrical properties are reached after a cure period of 7
days at room temperature.

(6) Remove any excess adhesive/sealant with a sharp knife after curing.
DEDALUS TECH

Repair No. 4
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934
REPAIR
Repair No. 5 - Renewal of Duct Assembly Sealing Ring

1. Materials

NOTE: Equivalent alternatives can be used for listed items.

Material Specification Supplier

Boscoprene 2402 Bostik Findley Limited

Ulverscroft Road
Leicester
LE4 6BW
United Kingdom
(U2215)

2-Butanone - Federal Specifications

(Methyl-Ethyl-Ketone Promulgated By General Services
(MEK)) Administration Washington DC
100 Bureau DR
Natl Institute Stds & Tech
MD 20899
Montgomery
USA
(81348)

Norton R222 J weight - Saint-Gobain Abrasives Limited

P100 Cloth Doxey Road
Stafford
ST16 1EA
United Kingdom
(KC1D9)

2. Repair Procedure

A. Removal of Defective Sealing Ring

(1) Remove the defective sealing ring from the duct assembly and remove any
remaining adhesive.

B. Cleaning

WARNING: YOU MUST OBEY THE HEALTH AND SAFETY INSTRUCTIONS OF THE
DEDALUS TECH

MANUFACTURER AND YOUR LOCAL INSTRUCTIONS WHEN YOU USE

THE CONSUMABLE MATERIALS.

(1) Clean the mating faces of the duct assembly, to remove all adhesive deposits from
the surface, with 2-Butanone (Methyl-Ethyl-Ketone (MEK)).
Repair No. 5
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934

(2) Clean the inside mating faces of the new sealing ring extrusion with 2-Butanone
(Methyl-Ethyl-Ketone (MEK)).

C. Replacement of Sealing Ring

(1) Roughen the cleaned areas of the new sealing ring with Norton R222 J weight
P100 cloth.

(2) Paint the prepared surfaces with Boscoprene 2402 and allow to dry for 15 minutes
to 1 hour. Paint a further coat of Boscoprene 2402 to the duct assembly and allow
to dry for 10 minutes.

(3) Assemble the sealing ring to the duct assembly and allow to cure for 72 hours.
Maximum strength is reached in 5 to 7 days.

DEDALUS TECH

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COMPONENT MAINTENANCE MANUAL
PART NOS. AC65934, AHA1130, AHA1162

Repair No.6 - Repair o f D u c t Assembly S u p p o r t Webs - RP1168

1. Special Tools a n d Materials

-
NOTE: Equivalent s u b s t i t u t e s may b e used f o r l i s t e d items.

A. Sheet steel t o BSS511, BS1449 Grade CSA 2/3/4 o r A I S I 1010/1012/1015

x 18 swg (0.048 in. t h i c k ) .

6. Welding f i l l e r w i r e t o 652901 Grade A15 o r A17.

C. Temporary p r o t e c t i v e PX 24 (DEF S T A N 68-10/2) o r PX 10 (DEF

S T A N 68-11/1).

Repair Procedure

A. Manufacture s t i f f e n i n g plates as shown in F i g u r e 601.

6. If plates a r e n o t t o b e used immediately p r o t e c t plates w i t h t e m p o r a r y

protective.

C. Clamp plates o n each of s i x equally spaced d u c t s u p p o r t webs as

shown in F i g u r e 601.

D. Weld a l l r o u n d u s i n g f i l l e r w i r e t o BS2901 Grade A15 o r A17 p a y i n g

p a r t i c u l a r a t t e n t i o n t o webs w i t h c r a c k s running between v e n t slots.
F i l l c r a c k s by running t h e weld up t h e sides o f slot flange as shown
in F i g u r e 601.

E. U s i n g e x i s t i n g d u c t attachment holes as a guide, drill t h r e e e q u a l l y

spaced holes 0.265/0.268 i n c h (6,73/6,80 mm) .
F. Prime r e p a i r e d areas w i t h Primer PR103.

G. Repair p a i n t f i n i s h o f welded areas as detailed in Repair No.3.

H. M a r k RP1168 following d u c t assembly p a r t number.

DEDALUS TECH

REPAIR
CO: 9466

Repair N0.6
Page 601
PRINTED IN ENGLAND Rev.4, A p r i l 22/86
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COMPONENT MAINTENANCE MANUAL
P A R T NOS.AC65934, AHA1130, AHA1162

"i3
VIEW ON'A'
'A'

- 6 2 5 IN115,87rnm)

SECTION'B B'
DIMENSIONAL TOLERANCE t-005IN(0,25mrnl ANGULAR TOLERANCE
MANUFACTURING DETAILS

CONTINUOUS DR~LLa265 1.268 IN.DIA

WELD 16,73 I.6.80mm)

C 10099.1
F ITTlNG DETAILS

DEDALUS TECH

Stiffening Plate Manufacture and Fitting Details

Figure 601
REPAIR
CO: 9466

Repair No.6
Page 602
PRINTED IN ENGLAND
Rev.4, April 22/86
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION
PART NOS. AHA1130, AHA1162,AHA1577, AHA1578 AND AC65934

REPAIR

ReDair No. 7 - I m o e l l e r Key Removal and Asse rnb 1Y

1. Parts, ECIuiDment and M a t e r i a l s

A. Parts
-

P a r t No. Description Quantity

AH0871 29 I m p e l l e r Key One

B. Equipment

NOTE: A l t e r n a t i v e s can be used.

(1> Hand brace.

(21 D r i l l bit, 2,5 mm (0.098 in.).

(3) Punch, 2,5 mm (0.098 in.) d i a m e t e r t o remove key.

(4) Centre punch, 4,76 mm ( 3 / 1 6 i n . ) d i a m e t e r t o open o u t t h e end o f

t h e i m p e l l e r key s t u d i n t o t h e c o u n t e r s i n k .

C. Materials

-
NOTE: A l t e r n a t i v e s can be used.

Material Specification Supplier

L o c a l Supply
J o i n t i n g Compound Hylomar PL32M (DTD900/4586)

(Supersedes: JC5A (DTD900/4488>

2. References

( 1 ) Cleaning.
DEDALUS TECH

32-43-1I Repai r NO. 7

Page 601
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION
PART NOS. AHA1130, AHA1162,AHA1577, AHA1578 AND AC65934
3. Repair Procedures

A. Removal

CAUTION: TO PREVENT DAMAGE TO THE IMPELLER, BE CAREFUL DURING REMOVAL

OF THE PEENED END OF THE KEY STUD.

(1) Use the hand brace and drill bit to remove the peened end of the
impeller key stud.

(2) Use the 2,5 mm (0.098 in.) punch to remove the stud from the
impeller.

(3) CLean the impeLLer (Ref. CLeaning).

B. AssembLy

(1) AppLy a thin layer of jointing compound to the new impeller key
stud and the impeller keyway.

(2) InstaLL the impeLLer key into the keyway.

(3) Put a support through the impeLler to heLp peening.

(4) Use the 4.76 mm (3/16 in.) centre punch to open out the end of the
impeLler key stud into the countersunk hole.

C. Completi on

(1) Remove unwanted jointing compound.

(2) Make sure that the impeller key is tight.

DEDALUS TECH

32-43-11 Repair No.7

CO: 9466

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

REPAIR

Repair No. 8 - Repair of Cooling Fan Motor Mount - RP1213

1. Materials

Material Specification Supplier

Alocrom 1200 powder DEF STAN 03-18 ICI Paints

(MIL-DTL-5541) Wexham Road
SLOUGH
Berkshire
SL2 5DS
United Kingdom
(K2054)

Araldite 2011 The same supplier (Hexcel

Resin AW106 Composites) can provide Araldite
Hardener HW953U materials.

OPT: Hexcel Composites

Araldite Resin MY753 DUXFORD
With Cambridge
Araldite Hardener HY951 CB2 4QD
United Kingdom
OPT:
Araldite Resin AV100 (K5066)
With
Araldite Hardener HV100
North American supplier:
Ciba Geigy Corporation
Polymers and Additives Division
7 Skyline Drive
HAWTHORN
NY 10532-2188

DEDALUS TECH

Repair No. 8
Page 601
32-43-11
CO: 9466

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

2. New Parts and Referenced Data

A. New Parts

Part No. Description Quantity

AH089708-1 )
or )
AH089708-2 ) Shim 3
or )
AH089708-3 )

DSR1002-3 Wire Thread Insert 3

B. Referenced Data

(1) CMM 32-43-11 Disassembly.

(2) CMM 32-43-11 Repair No. 1.

(3) CMM 32-43-11 Assembly.

3. Repair Procedure

A. First repair

(1) Remove the motor/motor mount assembly from the axle and disassemble
the motor from the motor mount (Ref. Disassembly).

(2) Remove the three wire thread inserts from the motor mount and
discard them.

(3) Measure the depth of the damaged slot.

(a) If the slot depth of the parent metal is more than 2.195 in.
(55,753 mm), do Stage 1 repair.

(b) If the slot depth of the parent metal is more than 2.215 in.
(56,261 mm), do Stage 2 repair.

(c) If the slot depth of the parent metal is more than 2.235 in.
(56,769 mm), do Stage 3 repair.
DEDALUS TECH

(4) Machine all the three slots to the dimensions given for the
applicable stage (Ref Figure 601 and Table 601).

(5) Drill and tap the three holes (Ref. Figure 602).

Repair No. 8
CO: 9466

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32-43-11 Rev 10, Aug 31/07
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

Stage No. Dimension A Shim Thickness

1 2.200 - 2.206 in. 0.0197 in. (0,5 mm)

(55,880 - 56,032 mm)
2 2.220 - 2.226 in. 0.0394 in. (1,0 mm)
(56,388 - 56,540 mm)
3 2.240 - 2.246 in. 0.0591 in. (1,5 mm)
(56,896 mm - 57,048 mm)

Machining Details of Slots

Table 601

DIMENSION A
SLOT DEPTH (REFER TABLE)

100267-1c

Machining Details of the Slots

Figure 601

(6) Alocrom the bare metal (Ref. Repair No. 1).

(7) Install the new wire thread inserts (Ref. Figure 603 and Table 602).

(8) Mix Araldite AV100 and Hardener HV100 in the proportion of 100 - 80
parts by weight and 100 - 100 parts by volume.
DEDALUS TECH

(9) Apply Araldite to shim.

(10) Install the shim to the requirements of the appropriate stage

(Ref Figure 604 and Table 603).

Repair No. 8
CO: 9466

Page 603
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FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

(11) Let the adhesive to cure for 18 hours at 20 deg C (68 deg F) or
one hour at 60 deg C (140 deg F) or 10 minutes at 100 deg C
(212 deg F).

(12) Check the depth of slot dimension with shim installed is within
2.177 - 2.187 in. (55,295 - 55,549 mm).

B. Repair Subsequent to First Repair

(1) Remove the motor/motor mount assembly as Para A.(1).

2.84 in (72,136 mm)

2.67 in (67,818 mm)

TO MINIMUM FULL THREAD

100268-1c

Machining Details of Motor Mount

Figure 602

B (REFER TABLE)

DEDALUS TECH

WIRE INSERT
100269-1d

Installation of Wire Thread Inserts

Figure 603

Repair No. 8
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FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

Stage No. B

1 0.08 in. (2,03 mm)

2 0.06 in. (1,52 mm)
3 0.04 in. (1,02 mm)

Details of Wire Thread Inserts

Table 602

Repair Stage No. Shim Part Number

1 AH089708-1
2 AH089708-2
3 AH089708-3

Assembly Data of Shims

Table 603

(2) Remove the shims and araldite fitted at the previous repair stage.

(3) If the parent metal is not damaged then install a new set of equal
thickness shims (Ref. Figure 604).

(4) Check the depth of slot with shim installed is within

2.177 - 2.187 in. (55,295 - 55,549 mm).

(5) Subsequent to removing the shims at Para B.(2) if the parent metal
shows any sign of damage proceed by machining to the next repair
stage.

(6) Alocrom the bare metal (Ref. Repair No. 1).

(7) Apply the alocrom by brush, do not allow alocrom to penetrate the
tapped hole.

(8) Install the applicable thickness shim (Ref. Figure 603).

(9) Check the depth of slot dimension with shim installed is within
2.177 - 2.187 in. (55,295 - 55,549 mm).
DEDALUS TECH

C. Identification

(1) Use 1/8 in. (3,2 mm) metal stamps and mark RP1213 Stage 1, 2 or 3
according to repair stage incorporated adjacent to the motor mount
Part number AHM8094.

(2) Apply alocrom 1200 solution to the bare metal (Ref. Repair No. 1).
Repair No. 8
CO: 9466

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

(3) Apply touch-up paint finish (Ref. Repair No. 3).

D. Assembly

(1) Assemble the motor into the mount and the motor/motor mount
(Ref. Assembly).
REFER MACHINING DETAILS OF SLOTS
IN TABLE 601
A

ARALDITE
WIRE INSERT
SHIM (TRIM EDGES TO ACHIEVE
SNUG FIT IN SLOT)

DETAIL A

DEDALUS TECH

100270-1b

Assembly Data of Shims

Figure 604
Repair No. 8
CO: 9466

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934

ASSEMBLY (INCLUDING STORAGE)

1. Special Tools and Materials

NOTE: Equivalent substitutes may be used for listed items.

A. Special Tools

Tool Item Description Remarks

No.

1 Torque Spanner, Used with Tool No. 2

0.375 in. sq drive
2 Adapter Used to torque load drive cover
attachment bolts and duct assembly
attachment bolts
3 Torque spanner, Used with Tool No. 4
0.25 in. sq drive
4 Adapter Used to torque load drive coupling
attachment bolt
5 Torque spanner, Used with Tool No. 6
0.5 in. sq drive
6 Adapter Used to torque load impeller bolt housing
7 Torque driver, Used with Tool No. 9
0.25 in. sq drive
9 Adapter, hexagon key Used to torque load motor and transducer
housing attachment screws

B. Materials

(1) Anti-seize grease SAE AMS2518 (DEF STAN 80-80)

OPT. MIL-PRF-83483

(2) Grease Dow Corning Molykote III

(3) Locking wire 22 swg (21 awg) DTD 189A DEDALUS TECH

Page 701
32-43-11
CO: 9466

Rev 14, Jan 16/14

COPYRIGHT  2014 MEGGITT AIRCRAFT BRAKING SYSTEMS
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934
2. Transducer Installation Only (Ref. Figure 301)

NOTE: Details of all special tools quoted will be found in Special Tools, Fixtures and
Equipment.

A. Preparation

(1) Ensure that the splines of the transducer and the mating splined bore of the drive
coupling are clean.

(2) Lightly coat all splined surfaces, threaded areas, drive coupling to drive cover
mating surfaces with anti-seize grease SAE AMS2518 (DEF STAN 80-80) or
MIL-PRF-83483.

B. Transducer

(1) Install the transducer in the mounting sleeve (120) and secure with three
screws (110); using special tools (Item Nos. 7 and 9) torque load to 13 Ibf.in.
(1,47 Nm).

(2) Install the drive coupling (100) to the transducer splined shaft and secure with
shakeproof washer (90) and bolt (80) using special tools (Item Nos. 3 and 4) torque
load to 13 Ibf.in. (1,47 Nm).

C. Drive Cover Assembly

(1) Engage drive cover spring (60) to drive coupling (100).

(2) Rotate drive cover assembly (30) to align attachment holes with corresponding
wheel holes and secure with washers (20) and bolts (10).

(3) Using special tools (Item Nos. 1 and 2) torque load attachment bolts (10) to
75 Ibf.in. (8,48 Nm).

3. Fan and Transducer Installations (Ref. Figure 302)

NOTE: Details of all special tools quoted will be found in Special Tools, Fixtures and
Equipment.

A. Preparation

(1) Ensure that all splined drives, screw threads and mating surfaces are clean and
free from damage.
DEDALUS TECH

(2) Lightly coat splined drives, screw threads and mating surfaces with anti-seize
grease SAE AMS2518 (DEF STAN 80-80) or MIL-PRF-83483.

(3) Lightly lubricate 'O' ring seal, drive shaft seal and motor mount rubber pads with
grease Dow Corning Molykote III.

Page 702
32-43-11
CO: 9466

Rev 14, Jan 16/14

COPYRIGHT  2014 MEGGITT AIRCRAFT BRAKING SYSTEMS
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934

B. Fan Motor

(1) Locate ‘o’ ring (310) in groove on motor body and slide motor (300) into
mount (250).

(2) Rotate motor to align receptacle with access aperture in motor mount

(3) Secure motor in mount using washer (240) and screws (230). Using special tools
(Item Nos. 7 and 9); torque load to 35 lbf.in. (4,0 Nm).

C. Impeller Assembly

(1) Insert seal (150), spring plate (140) and washer (130) into impeller bolt housing
assembly (110) and then install the circlip (120).

(2) Insert the spring washer (170) and impeller bolt assembly (160) into the
impeller (180) and then install the circlip (100).

D. Transducer Drive Shaft Assembly

(1) Insert the bearing (370) fully into recess at the rear of the motor mount assembly
(250).

(2) Insert drive shaft assembly (360) through centre of the bearing, through fan motor
(300) until the drive shaft housing contacts the bearing.

(3) Gain access motor mount aperture and fit circlip (350) to drive shaft housing to
secure drive shaft in position.

E. Transducer

(1) Ensure the transducer anti-rotation screw is fitted in any one of the three threaded
holes located in the drive shaft end face of the transducer.

NOTE: The anti-rotation screw is fitted using thread locking compound as detailed
in the Component Maintenance Manual 32-41-44.

(2) Insert transducer in transducer housing (400) making certain that anti-rotation
screw is correctly located in housing recess.

(3) Secure transducer in housing with spring (340), spring retainer (330) and
circlip (320). DEDALUS TECH

Page 703
32-43-11
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FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934

(4) Align transducer splined drive with drive shaft splined sleeve and ensure fully
engaged.

(5) Rotate transducer housing (400) to align with attachment holes in motor mount
assembly (250) and secure with washers (390) and screws (380). Using special
tools (Item Nos. 7 and 9, torque load to 35 lbf. in. (4,0 Nm).

(6) Rotate the drive shaft (360) and check for freedom of movement and rotation
through to the transducer.

F. Duct Assembly

(1) Align duct assembly (210) to attachment holes in wheel and secure with washers
(200) and bolts (190). Using special tools (Item Nos. 1 and 2, torque load to
75 lbf. in. (8,48 Nm).

(2) Wirelock each of the three screws to an adjacent duct web using locking wire.

G. Final Assembly

(1) Refer to the Aircraft Maintenance Manual. Make electrical connections to the
transducer and fan motor and install assembly in wheel axle.

(2) Align key in impeller hub with keyway in motor drive shaft. Rotate bolt housing
(160) until impeller hub contacts motor bearing collar.

(3) Using special tools (Item Nos. 5 and 6), torque load bolt housing (160) to
300 lbf. in. (34,0 Nm).

(4) Carry out functional checks of fan motor and transducer installations as detailed in
the Aircraft Maintenance manual.

(5) Part Nos. AHA1130 and AHA1162

Install debris guard assembly (20) by engaging splined sleeve (60) with transducer
drive shaft; rotate debris guard to align location pegs with duct assembly holes and
then fully engage. Secure by inserting wire circlip (10).

(6) Part Nos. AHA1577 and AHA1578

Install debris guard assembly (20A) by engaging splined sleeve (60) with
transducer drive shaft (360) then rotate debris guard to align securing screw holes
with duct assembly anchor nuts (226). Secure guard assembly to duct assembly
DEDALUS TECH

using three screws (10A).

(7) Switch on fan motor and ensure an adequate clearance exists between impeller fan
tips and duct.

Page 704
32-43-11
CO: 9466

Rev 13, Nov 13/12

COPYRIGHT  2012 MEGGITT AIRCRAFT BRAKING SYSTEMS
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COMPONENT MAINTENANCE MANUAL
PART NOS.AC65934, AHA1130, AHA1162
1 4. Storaqe A f t e r Assembly

A. Packing Materials

NOTE: Equivalent substitutes may be used for listed items.

Moisture absorbent paper 1
Polythene bag ) Commercially available
Cardboard carton 1
Receptacle blanking caps 1
B. Storage Conditions

(1) Place suitable b l a n k i n g caps o v e r t h e two receptacles and w r a p

a p r o t e c t i v e grease bandage around t h e exposed spline o f t h e
t r a n s d u c e r and f a n motor d r i v e s .

(2) Wrap t h e installation in moisture absorbant paper and seal in a

polythene bag. Place the u n i t s i n t o the cardboard carton y ' i n g
packing if necessary.

(3) Store the installations i n a suitable store room which provides

adequate protection from adverse climatic conditions. The ideal
store room temperature i s 10 t o 21 deg.C (50 t o 70 deg.F).
Avoid temperature extremes above 27 deg.C (81 deg. F) and be-
low minus 15 deg.C ( 5 deg. F).

(4) Contamination o f stored u n i t s by f l u i d s o f any description m u s t

be avoided.

DEDALUS TECH
CO: 9466

32-43-
- 11 Page 705/706 B l a n k
Rev.3, May 2/85
PRINTED IN ENGLAND
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COMPONENT MAINTENANCE MANUAL
PART NOS.AC65934, AHA1130, AHA1162

FAN AND TRANSDUCER INSTALLATIONS

FITS AND CLEARANCES

1. T o r q u e Values

IPL Fig.
and
Item No. ltern T o r q u e (Newton Metres)

1-10 Bolt 75 pound inches (8,48)

1-80 Bolt 13 pound inches (1,47)
1-110 Screw 13 pound inches (1,47)

2-110 Housing assy b o l t 300 pound inches (34,O)

2-1 90 Bolt, d u c t 75 pound inches (8,48)
2-230 Screw 35 pound inches (4,O)
- 2-380 Screw 35 pound inches (4,O)

DEDALUS TECH
CO: 9466

32-43- 1 1 PageRev.3,
PRINTED IN ENGLAND
801/802 B l a n k
May 2/85
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER AND INSTALLATION
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934
SPECIAL TOOLS, FIXTURES AND EQUIPMENT
1. General

The following table lists the special tools, fixtures and equipment required for the complete
component maintenance of transducer installation AC65934 and transducer and fan
installations AHA1130, AHA1162, AHA1577 and AHA1578.
NOTE: Equivalent substitutes may be used for listed items.

2. Special Tools

Tool Tool Part Description Remarks

No. No.

1 Acratork Torque Spanner, Used with Tool No.2

Model Junior 0.375 in. sq drive

2 Britool Adapter Used to torque load drive cover

AB437 attachment bolts and duct assembly
attachment bolts
3 Acratork Torque spanner, Used with Tool No.4
Model 0.25 in. sq drive
Minor Mk.3
4 Britool Adapter Used to torque load drive attachment
DH250 bolt coupling
5 Acratork Torque spanner, Used with Tool No.6
Model A1 0.5 in. sq drive
6 Britool Adapter Used to torque load impeller bolt
EB812 housing
7 MHH Torque Torque driver, Used with Tool No.9
Leader 0.25 in. sq drive
9 Britool Adapter, hexagon key Used to torque load motor and
D33-156 transducer housing attachment
screws
10 Armstrong Extractor Tool For removal of wire thread inserts
1227-06

11 Armstrong Insertion Tool For fitting wire thread inserts

DEDALUS TECH

9863-3

12 Armstrong Tang 'Break off’ Tool For wire thread insert tang removal
3581-3

Page 901
32-43-11
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER AND INSTALLATION
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934
3. Equipment

A. Vacuum cleaner To remove any accumulations of dust from the installation

components, Ref. Cleaning

B. Air circulating oven Capable to give a controlled temperature of 90 deg. C

(194 deg. F), Ref. Repair No.3

C. Immersion stripper tank Necessary for paint stripper and peachstone blast
Ref. Repair No.3

D. Paint spray equipment Necessary for Repair of paint finish, Ref. Repair No.3.

DEDALUS TECH

Page 902
32-43-11
CO: 9466

Rev 13, Nov 13/12

COPYRIGHT  2012 MEGGITT AIRCRAFT BRAKING SYSTEMS
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DLTNEOP A E ' O S P A C E IGIMITED
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NO. AHA1130, AHA1162, AHA1577, AHA1577, AHA1578 AND AC65934

ILLUSTRATED PARTS LIST

INTRODUCTION

A. The i l l u s t r a t e d p a r t l i s t ( I P L ) c o n t a i n s t h e i l l u s t r a t i o n s and t h e p a r t s
l i s t s f o r t h e assembly g i v e n i n t h e l e a d i n g p a r t i c u l a r s . The p a r t s l i s t s
g i v e t h e i t e m s t h a t can be disassembled, r e p a i r e d o r replaced, and
assembled.

2. To Use t h i s S e c t i o n

NOTE: The d a t a i n p a r a g r a p h 2.A. t h r u paragraph 2.F. a r e i n c l u d e d as

necessary i n t h e i l l u s t r a t e d p a r t s l i s t (IPL).

A. F i g u r e and I t e m Column

(1) The f i g u r e number a t t h e t o p l e f t o f t h e column r e l a t e s t h e p a r t s

l i s t t o the illustration.

(2) The end i t e m number 1A i s a p p l i c a b l e t o t h e end i t e m t h a t i s shown

i n the i l l u s t r a t i o n . The i t e m s t h a t a r e changed a r e shown
i m m e d i a t e l y a f t e r t h e end i t e m (IB, 1C e t c . ) .

(31 A hyphen (-1 b e f o r e an i t e m number shows t h a t t h e i t e m i s n o t shown

on t h e iL l u s t r a t i o n .

(4) The i t e m number sequence i s in, as f a r as p o s s i b l e , t h e d i s a s s e m b l y

sequence o f t h e end i t e m . The sequence i s i n s t e p s o f more t h a n one
t o p e r m i t , when necessary, more i t e m s t o be i n c l u d e d .

(5) Alpha s u f f i x e s , A t h r u Z ( e x c e p t I and 01, a r e used when i t i s

n e c e s s a r y t o add more i t e m s t o show:

(a) Special-to-type items.

(b) Service b u l l e t i n modifications.

(c) Configuration differences.

(dl P a r t s t h a t have been made b e t t e r ( n o n - s e r v i c e bulletin).

( 6 ) Alpha s u f f i x e s t o t h e i t e m numbers a r e n o t u s u a l l y shown on t h e

illustration. T h i s does n o t a p p l y when t h e shape and t h e l o c a t i o n
o f t h e a l p h a i t e m i s n o t t h e same as t h e b a s i c i t e m .
DEDALUS TECH

(7) P a r t s t h a t make a s e l e c t - f r o m - r a n g e group have one ( n o t shown) i t e m

number a f t e r t h e o t h e r . T h i s does n o t a p p l y t o t h e s u p p l i e d
c o n f i g u r a t i o n , o r t h e p a r t number o f t h e s m a l l e s t p a r t t h a t i s
shown.

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FAN AND TRANSDUCER INSTALLATION, PART NO. AHA1130, AHA1162, AHA1577, AHA1578
AND AC65934

B. Part Number Column

(1) The part number column contains the part number which can be:

(a) A part number that is standard such as AGS, MS, AN, LN etc.

(b) The manufacturer’s (Dunlop Aerospace Braking Systems) part

number or its supplier’s part number.

(c) The trade marks of Dunlop Aerospace Limited are: Maxaret, AC,
ACA, ACM, ACO, AH, AHA, AHO, AE, AEA, AEM and AEO.

(d) Trade marks used by Dunlop Aerospace Limited under licence are:
Dunlop and .
(e) The Dunlop stores reference (DSR) or the Dunlop electronic
component (DEC) number when:
- The supplier’s part number is more than fifteen (15)
characters.
- The part number is incorrect (for example the part
number contains a dimension that is a fraction).
- No part number has been given.

C. Airline Part Number Column

(1) This empty column is included for use by the equipment operator.

D. Nomenclature Column

(1) The parts are in a sequence that shows how one part relates to the
other part:

1234567
Assembly or Installation Assembly (RF) number (End Item)
Attaching parts for assembly or installation of RF assembly
.Detail parts for assembly
.Subassembly (secondary to lead item)
.Attaching parts for subassembly
..Detail parts for subassembly
..Sub-subassembly (secondary to subassembly)
..Attaching parts for sub-subassembly
...Detail parts for sub-subassembly
DEDALUS TECH

NOTE: The words ’or Installation Assembly (RF) number’ is used to

identify a non-procurable group (installation) of parts that
does not make a known assembly.

(2) A DSR number (when applicable) is included when the part number in
the part number column is not a Dunlop part number.
CO: 9466

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NOS. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934

(3) The supplier's part number is given in the nomenclature column together with his
vendor code (when a DSR or DEC number is in the part number column because
the supplier's part number is more than 15 characters or has characters that are not
permitted by the specification ATA100).

(4) The materials from which the part is made and its dimensions are usually specified
together with the supplier's vendor code (when a DSR or DEC number appears in
the part number column due to the lack of a supplier's part number).

(5) Parts which require special handling are identified. For example electrostatic
discharge sensitive electronic components are identified with (ESDS).

(6) Parts Replacement Data

(a) The parts that are interchangeable are identified in the NOMENCLATURE
column of the parts list. The abbreviations used to show those parts that are,
or are not, interchangeable are:
- OPT. The part is optional to and is interchangeable with other parts
in the same item number group (or other item number if
designated)
- SUPSD BY The part is replaced by and is not interchangeable with
the item number given
- SUPSDS The part replaces and is not interchangeable with the
item number given
- REPLD BY The part is replaced by and is interchangeable with the
item number given
- REPLS The part replaces and is interchangeable with the item
number given
- ALT The part is not a direct equivalent but is acceptable as an
alternative.

(7) Service Bulletin Incorporation

(a) (PRE-SB XXXX) in the nomenclature column identifies the original

configuration. (POST-SB XXXX) identifies the assemblies and the parts after
the service bulletin modification has been completed.

E. Effectivity Column

(1) Parts identified with an effectivity code (A, B, C etc.) must be used with parts having
the same or no effectivity code.

F. Units per Assembly Column

DEDALUS TECH

(1) The quantity specified is the quantity of a specific-item-numbered part necessary to

build (as applicable) its next higher:
- Sub-subassembly
- Subassembly
- Assembly or installation level.

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NOS. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934

(2) AR is used for bulk items, and select-from-range parts that are not shown on the
illustration. The quantity is that necessary for the assembly.

(3) RF shows the part is included in the illustrated parts list for identification only.

3. Vendor Code List

A. The vendor code numbers are those in:

- The national NATO code for manufacturers (NSCM) H4-1 and H4-2 or
- The USA, Department of Defense, Commercial and Government Entity (CAGE)
Cataloging Handbook H4/H8.

Vendor Vendor Address

Code

K1037 Meggitt Aircraft Braking System Holbrook Lane

Coventry
CV6 4AA
England
D8442 Normenstelle Luftfahrt Burggrafenstr, 6
Berlin
10787
Germany
K0248 Aylesbury Automation Ltd UNIT 2
Farmborough Close
Aylesbury Industrial Park
Stocklake, Aylesbury
HP20 IDQ
England
K0745 Cirteq Ltd Hayfield, Colne Road
Glusburn
BD20 8QP
England
K1012 Armstrong Precision Components Ltd Stoneferry Business Park
Foster Strt
HULL 8BT
England

Continued . . . DEDALUS TECH

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934
Vendor Code List (Continued...)

Vendor Vendor Address

Code

K1678 Fairchild Fasteners UK Ltd Unit 6, Bardon 22

Industrial Estate
Bardon Hill
Coalville
LE67 1TE
England
K7766 British Standards Institution 389 Chisick High Road
LONDON
W4 4AL
England
U0881 Avery Weigh-Tronix Ltd Foundry Lane
SMETHWICK
B66 2LP
England
U1653 Society of British Aerospace Companies Ltd Salamanca Square
9 Albert Embankment
London
SE1 7SP
England
U1683 Nmb-Minebea (UK) Ltd Suite 2.2
Doncastle House
Doncastle OAD
BRACKNELL
RG12 8PE
England
15860 New Hampshire Ball Bearing Inc Astro Division
155 Lexington Avenue
LACONIA
NH 03246
USA
U0912 Twiflex Ltd 104 The Green
Twickenham
London
TW2 5AQ
England
DEDALUS TECH

32-43-11 Page 1005

Rev 11, Nov 26/10
CO: 9466

COPYRIGHT  2010 MEGGITT AIRCRAFT BRAKING SYSTEMS

 EMAIL: adrian.paramanov@dedalustech.eu
COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934

Transducer Installation Only (AC65934)

Figure IPL 1

DEDALUS TECH

32-43-11 Page 1006

Rev 11, Nov 26/10
CO: 9466

COPYRIGHT  2010 MEGGITT AIRCRAFT BRAKING SYSTEMS

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934
ILLUSTRATED PARTS LIST

Fig Item Airline Nomenclature Eff Units

Part Number Stock No. 1234567 Code per
Assy
1-1A AC65934 TRANSDUCER INSTALLATION (K1037) RF
10 AH087839 .BOLT (K1037) 3
20 SP126E .WASHER (K7766) 3
DSR2533-5 (K1037)
30 ACM29339 .COVER DRIVE ASSY (K1037) 1
40 DSR4156-1203 ..RIVET SEMI-TUBULAR STEEL (K1037) 4
BS970-030A04 (K0248)
1/8 IN. DIA X 3/16 IN. LG
50 LN9025 ..WASHER (D8442) 4
DSR60503-2001 (K1037)
60 AC043012 ..SPRING DRIVE (K1037) 1
70 ACM29340 ..COVER DRIVE (K1037) 1
80 AC034600 .BOLT (K1037) 1
90 AGS2034-B .WASHER SHAKEPROOF (U1653) 1
100 AC044783 .COUPLING DRIVE (K1037) 1
MOD. C2210
110 DAS2294-2 .SCREW SOCKET HD CAP (K1037) 3
120 ACM29234 .SLEEVE MOUNTING (K1037) 1

DEDALUS TECH

- ITEM NOT ILLUSTRATED

32-43-11 Page 1007

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CO: 9466

COPYRIGHT  2010 MEGGITT AIRCRAFT BRAKING SYSTEMS

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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NO. AHA1130, AHA1162, AHA1577, AHA1577, AHA1578 AND AC65934

DEDALUS TECH

Fan and Transducer Installations

Figure IPL 2

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Rev 9, Jul 02/03

COPYRIGHT  2003 DUNLOP AEROSPACE LIMITED
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION,
PART NOS. AHA1130, AHA1162, AHA1577, AHA1578 AND AC65934
ILLUSTRATED PARTS LIST

Fig Item Airline Nomenclature Eff Units

Part Number Stock No. 1234567 Code per
Assy
2-1A AHA1130 FAN AND TRANSDUCER (K1037) A RF
INSTALLATION '100' SERIES
PRE-SB 32-966
2-1B AHA1162 FAN AND TRANSDUCER (K1037) B RF
INSTALLATION '200' SERIES
PRE-SB 32-966
2-1C AHA1577 FAN AND TRANSDUCER (K1037) C RF
INSTALLATION '100' SERIES
POST-SB 32-966
2-1D AHA1578 FAN AND TRANSDUCER (K1037) D RF
INSTALLATION '200' SERIES
POST-SB 32-966
10 AHM8232 .CIRCLIP WIRE (K1037) AB 1
-10A A218D16 .SCREW (K7766) CD 3
DSR1511-6 (K1037)
20 AHM8242 .GUARD ASSY DEBRIS (K1037) AB 1
20A AHM8682 .GUARD ASSY DEBRIS (K1037) CD 1
30 WDM2420 ..LABEL SELF ADHESIVE 1
OPT. DAS2366-68 (K1037)
40 SP85-404 ..RIVET (K7766) BD 3
DSR696-2 (K1037)
-40A SP85-406 ..RIVET (K7766) AC 3
DSR696-4 (K1037)
50 AH087837 ..PLATE RETAINING (K1037) 1
60 AH087838 ..SLEEVE SPLINED (K1037) 1
70 AS460-409 ..RIVET (U1653) AB 2
DSR443-7 (K1037)
75 AH088212 ..PEG LOCATION (K1037) AB 2
80 AHM8241 ..GUARD SUB-ASSY DEBRIS (K1037) AB 1
80A AHM8681 ..GUARD SUB-ASSY DEBRIS (K1037) CD 1
90 AHM8079 .IMPELLER ASSY (K1037) 1
100 DSR2863-23 ..CIRCLIP (K1037) 1
TYPE SB 30 mm BORE
SUPSD BY ITEM 100A
-100A SB30 ..CIRCLIP (U0912) 1
SUPSDS ITEM 100
DEDALUS TECH

DSR51679-1023 (K1037)
110 AH087820 ..HOUSING ASSY BOLT (K1037) 1
120 N5000-68H ...CIRCLIP TRUARC (U0881) 1
DSR3940-1010 (K1037)
- ITEM NOT ILLUSTRATED

32-43-11 Rev 11, Nov 26/10

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FAN AND TRANSDUCER INSTALLATION, PART NOS. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934

ILLUSTRATED PARTS LIST

Eff Units
Fig Item Airline
Nomenclature Code per
Part Number Stock No. 1234567
Assy
130 AH086580 ...WASHER (K1037) 1
140 AH086465 ...PLATE SPRING (K1037) 1
150 AH086466 ...SEAL (K1037) 1
160 AH087821 ...HOUSING BOLT (K1037) 1
170 SP47P ..WASHER SPRING (K7766) 1
DSR163-12 (K1037)
180 AH43832 ..IMPELLER (K1037) 1
190 AH087839 .BOLT (K1037) 3
200 SP126E .WASHER (K7766) 3
DSR2533-5 (K1037)
210 AH088210 .DUCT ASSY (K1037) AB 1
210A AH089126 .DUCT ASSY (K1037) CD 1
220 AH085341-7 ..RING SEALING (K1037) 1
222 AHM8680 ..DUCT SUB-ASSY (K1037) CD 1
224 SP79-305 ...RIVET (K7766) CD 6
DSR899-4 (K1037)
226 MF1000-3 ...NUT ANCHOR (K1678) CD 3
OPT. MA13600-2
DSR4561-1004 (K1037)
230 DSR1119-2 .SCREW CAP SKT HD (K1037) 3
10-32 UNF 0.5 in. LG.
PRE-MOD C2308
-230A DSR1119-3 .SCREW CAP SKT HD (K1037) 3
10-32 UNF 0.625 in. LG.
POST-MOD C2308
240 SP126D .WASHER (K7766) 3
DSR2533-4 (K1037)
250 AHM8094 .MOUNT ASSY MOTOR (K1037) AC 1
'100' SERIES
-250A AHM8109 .MOUNT ASSY MOTOR (K1037) BD 1
'200' SERIES
260 AH087849 ..PAD RUBBER (K1037) AC 3
'100' SERIES
-260A AH085145 ..PAD RUBBER (K1037) BD 3
'200' SERIES
270 AH086072 ..PLATE SUPPORT (K1037) 3
DEDALUS TECH

-280 DSR1002-3 ..INSERT HELICOIL (K1037) 5

3591-3CN X 0.38 in. LG (K1012)
10-32 UNF
290 AH43838 ..MOUNT MOTOR (K1037) 1
-ITEM NOT ILLUSTRATED
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FAN AND TRANSDUCER INSTALLATION, PART NOS. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934

ILLUSTARTED PARTS LIST

Fig Item Airline Eff Units

Part Number Stock No. Nomenclature Code per
1234567 Assy
300 AHM8077 .MOTOR (K1037) 1
PLESSEY M422M15
(REF.PLESSEY CMM(32-43-01)
PRE-MOD C2553
OPT.
PLESSEY M422M15-1
(REF.PLESSEY CMM(32-43-01)
POST-MOD C2553
-300A AHM9050 .MOTOR (K1037) 1
AIRSCREW HOWDEN
TYPEI60-45-511
(REF. AIRSCREW HOWDEN
CMM32-43-05)
310 DAS2308-7 ..RING SEALING (K1037) 1
320 5008-143 ..CIRCLIP TRUARC (U0881) 1
SUPSD BY ITEM 320A
DSR761-12 (K1037)
-320A 5008-143S .CIRCLIP (U0881) 1
SUPSDS ITEM 320
OPT. NAM1308-143 (K0745)
DSR761-1012 (K1037)
330 AC044328 .RETAINER SPRING (K1037) 1
340 AH087832 .SPRING (K1037) 1
350 DSR51652-1009 .CIRCLIP (K1037) 1
BS3673S008M (K7766)
CARBON SPRING STEEL
PRE-MOD DCD20500ISS97
-350A DSR51652-5006 .CIRCLIP (K1037) 1
BS3673S008M (K7766)
CARBON SPRING STEEL
POST-MOD DCD20500ISS97
360 AC044214 .SHAFT ASSY DRIVE (K1037) 1
PRE-MOD C2404
SUPSD BY ITEM 360A
-360A AC045528 . SHAFT ASSY DRIVE (K1037) 1
DEDALUS TECH

POST-MOD C2404
SUPSDS ITEM 360
370 SR385PPDK25- .BEARING (15860) 1
287 PRE-MOD C2427
SUPSD BY ITEM 370A
- ITEM NOT ILLUSTRATED
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COMPONENT MAINTENANCE MANUAL
FAN AND TRANSDUCER INSTALLATION, PART NOS. AHA1130, AHA1162, AHA1577,
AHA1578 AND AC65934

ILLUSTRATED PARTS LIST

Fig Item Part Number Airline Nomenclature Eff Units

Stock No. Code per
1234567
Assy
-370A DSR4127-2031 .BEARING (K1037) 1
SR38LL30K58-432 (15860)
OPT. SSR2280DD (U1683)
SUPSDS ITEM 370
POST-MOD C2427
PRE-MOD C10819(0)
-370B DSR4127-2031 .BEARING (K1037) 1
SUPSDS ITEM 370A
POST-MOD C10819(0)
380 DSR1119-2 .SCREW CAP SKT HD (K1037) 2
10-32 UNF 0.5in. LG
STAINLESS STEEL
PRE-MOD C2308
SUPSD BY ITEM 380A
-380A DSR1119-3 .SCREW CAP SKT HD (K1037) 2
10-32 UNF 0.5in. LG
STAINLESS STEEL
POST-MOD C2308
SUPSDS ITEM 380
PRE-AMDT37926
SUPSD BY ITEM 380B
-380B DSR4523-1606 .SCREW CAP SKT HD (K1037) 2
POST-AMDT37926
SUPSDS ITEM 380A
390 SP126D .WASHER (K7766) 2
DSR2533-4 (K1037)
400 AHM8091 .HOUSING TRANSDUCER (K1037) 1

DEDALUS TECH

- ITEM NOT ILLUSTRATED

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