CE DOCUMENT EST LA PROPRIETE EXCLUSIVE DE LA SOCIETE TURBOMECA, IL NE PEUT ETRE UTILISE SANS SON AUTORISATION.

THIS DOCUMENT IS THE SOLE PROPERTY OF TURBOMECA AND MAY NOT BE USED WITHOUT ITS EXPRESS AUTHORIZATION. Instruction Technique IT_292_72_0839_EN Version E vibration check of the 41-tooth gear 

### pour rien pour rien Langue principale : Anglais


### Traduction de / Translation of IT_292_72_0839 version E Controle des vibrations du pignon 41 dents

LIENS / Links pour rien DOCUMENTS DE REFERENCE / Reference documents : pour rien Type / Type Référence / Doc Number Désignation / Designation



# IT_292_72_0839_EN - E <February 20, 2014> - 1 / 22

# ARRIEL 1

TURBOSHAFT ENGINE

TECHNICAL INSTRUCTION

VIBRATION CHECK OF THE 41-TOOTH GEAR WITH SIMPLIFIED SYSTEM (B&K 3658-A TYPE) FOR CHECK IN THE TEST FIELD (ENGINE)

No. 292 72 0839 Update version E 

### : February 2014 (This update version E comes after update No. 1 of October 30, 2013)

64511 BORDES CEDEX - FRANCE - Tél. : (33) (0) 5.59.12.50.00 - Télex : 560928 Fax : (33) (0) 5.59.53.15.12



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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# 292720839 Page 1 December 2013 

## Components from aircrafts involved in accidents, including engines and engine parts, are sometimes sold for use on airworthy aircrafts. Please be advised that whenever a TURB OMECA engine or engine part is subjected to stresses, thermal effects or other damage beyond normal operating parameters, some adverse change in that part may occur. Such a change may not be visually detectable and would therefore require destructive testing to determine airworthiness. Unless you can evaluate stresses, thermal effects or other damage to which parts are subjected as the result of an accident and determine that the parts still conform with th eir design standard, you should assume that any part that may affect sa fe operation of the aircraft is damaged beyond acceptable limits and must not be re-used. All information and data appearing in this technical instruction are the exclusive property of TURBOMECA. They are made available to the operato r of the engine under a restrictive licence from TURBOMECA for the so le purpose of enabling safe operation and maintenance of the engine. Any other use of this information and data is subject to the prior agreement of sales terms with TURBOMECA.



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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# 292720839 Page 2 December 2013 

## All scheduled or unscheduled ma intenance procedures carried out pursuant to a maintenance document (Maintenance Manual, Technical Instruction, Maintenance T echnical Instruction) must be recorded in the relevant engine log book section(s), on the exchangeable supply log card (module) or the log card (accessory) where applicable. All modifications made pursuant to a Service Bulletin must be recorded in the relevant engine log book secti on(s), on the exchangeable supply log card (module) or the log card (accessory) where applicable. Failure to record incorporation of these maintenance procedures or modifications could result in unsafe engine usage conditions which could compromise flight safety.



# IT_292_72_0839_EN - E <February 20, 2014> - 5 / 22

## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

Effectivity: B - D - D1 General

The information contained in this manual is subject to the warning provided on the information page 

# 292720839 Page 1 February 2014 VIBRATION CHECK OF THE 41-TOOTH GEAR WITH SIMPLIFIED SYSTEM (B&K 3658-A TYPE) FOR CHECK IN THE TEST FIELD (ENGINE) - GENERAL

1. Introduction
This technical instruction is intended for TURBOM ECA-approved technicians carrying out maintenance procedures on ARRIEL 1 turboshaft engines and who have followed a Level-1 or 2 maintenance training course. It describes the procedure for the vibration check to be done on an engine installed on the aircraft to make sure that the 41-tooth gear of the acce ssory gearbox (Module 01) meshes correctly. This procedure is requested by the Mandatory Service Bulletin No 292 72 0839. These works must be carried out in compliance with the procedure described below.



### INFORMATION : This operation is illustrated by a video. Refer to LS 2891/13/ ARRIEL1 available on the site TOOLS from TURBOMECA. Please refer to this support before a pplying this technical instruction.

2. Reference documents - Maintenance Manual. - Mandatory Service Bulletin No. 292 72 0839. - LS 2891/13/ARRIEL1
3. Purpose of the operation - Installation of the accelerometer and of the tachometer harness. - Check of mesh frequency order 82 of the 41-tooth g ear (of the 41/23 matched gear assembly) of the accessory gearbox (Module 01). - Removal of the tachometer harness and of the accelerometer.

4. Pre-requisites Remove/install the connector of the engine control an d monitoring harness from/on the connector of the gas generator tachometer transmitter (“T.T.G.” conne ctor). Refer to Task 71-51-00-900-801 of the Maintenance Manual.



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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The information contained in this manual is subject to the warning provided on the information page 

# 292720839 Page 2 December 2013 PAGE LEFT BLANK INTENTIONALLY



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

Effectivity: B - D - D1 Tests

The information contained in this manual is subject to the warning provided on the information page 

# 292720839 Page 1301 December 2013 VIBRATION CHECK OF THE 41-TOOTH GEAR WITH SIMPLIFIED SYSTEM (B&K 3658-A TYPE) FOR CHECK IN THE TEST FIELD (ENGINE) - TESTS
1. Necessary means referenced in the procedure
A. Standard tools Description P/N Quantity Mechanic’s standard tool kit 1 Laptop 1 B. Special tools (Refer to Appendix 1)

C. Consumables Description Quantity “Aluminium”-type adhesive tape AN "TY-RAP"-type plastic clamp AN Description P/N Quantity 41-tooth gear vibrations inspection kit B&K 3658-A, including: TM5936G001 1
- Acquisition system B&K 2250-H-200, including: TM5986G001 1
- Vibration analyzer B&K 2250-H-001 TM5351G201 1 - USB / micro USB cable B&K AO-1494 TM5351G601 1 - Conditioning and measure kit B&K 4397-B, including: TM5987G001 1

- Accelerometer cable M3 / LEMO B&K AO-0701-D-040 - Length 4 m TM5987G101 1

- Miniature Deltatron® accelerometer B&K 4397-A TM5987G201 1
- Screw HC with flat end DIN 913 (NORELEM 07165-03X) B&K UA-2095 TM5987G301 1
- Neodymium Iron Boron pot magnet (ARELEC 0351123) B&K UA-2094 TM5987G401 1
- Tachometer acquisition kit B&K ZH-0701-A, including: TM5988G001 1

- Tachometer harness B&K AO-1479-A-005 TM5988G101 1 - Dual channel tacho coupler B&K WB-3487 TM5988G201 1 - BNC / LEMO cable B&K AO-0440-D-015 - Length 1.5 m TM5988G301 1



# IT_292_72_0839_EN - E <February 20, 2014> - 8 / 22

## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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The information contained in this manual is subject to the warning provided on the information page 

# 292720839 Page 1302 December 2013 D. Systematic spare parts Not applicable. E. Spare parts Not applicable.

2. Reference tasks and documents - Standard practices - General. Refer to Task 70-01-00-950-801-A01 of the Maintenance Manual. - Vibrations - Engine tests - General. Refer to Task 71-02-10-760-801-A01 of the Maintenance Manual. - Engine control and monitoring harness. Refer to Task 71-51-00-900-801 of the Maintenance Manual.



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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# 292720839 Page 1303 February 2014 3. Procedure

NOTA : A training support is available on the site TOOLS from TURBOMECA, please refer to the introduction paragraph of this TI. A. Preliminary procedures

(1) Charge the acquisition module batteries for min. 5 hours to avoid any battery charge problem during the engine test. (2) Record the following information ( * mandatory data to complete the metadata ): (a) Aircraft

Customer * Type * Serial Number * Registration Number

(b) Engine Type / Variant / Version * Serial Number * Time since new Time since overhaul Time since repair

(c) Modules
Serial Number * P/N Time since new * Time since overhaul Time since repair M 01 * M 02 M 03 M 04 M 05



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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# 292720839 Page 1304 December 2013 B. Preparation (1) Installation of the accelerometer (Refer to Figure 1301) (a) If necessary, install the B&K 4397-A ac celerometer (TM5987G201) as follows:

1 Install the B&K UA-2095 screw HC (TM5987 G301) (hexagonal so cket head side) in the B&K 4397-A accelerometer (TM5987G201) (flat head of the screw HC oriented to the pot magnet).
2 Install the B&K UA-2094 pot magnet (TM5987G401) on the B&K 4397-A accelerometer (TM5 987G201) / B&K UA-2095 screw HC (TM5987G301) assembly.
3 Connect the B&K 4397-A accelerometer (T M5987G201) with the B&K AO-0701-D040 accelerometer cable (TM5987G101).
4 Tighten the connector of the B&K AO-0701-D-040 accelerometer cable (TM5987G101) moderately on the B&K 4397-A accelerometer (TM5987G201). CAUTION : MAKE SURE THAT THE POT MAGNET BASE TOUCHES THE REAR SCREW OF THE FRONT ACCELEROMETER SUPPORT AND THE AXIAL COMPRESSOR CASING. (b) Install the B&K 4397-A accelerometer (TM5987G201) / B&K UA-2094 pot magnet (TM5987G401) / B&K AO-0701-D -040 accelerometer cable (T M5987G101) assembly on the front accelerometer support.
CAUTION : MAKE SURE THAT THE CABLE DOES NOT TOUCH THE HELICOPTER CONTROLS. (c) Route the B&K AO-0701-D-040 accelerometer cable (TM5987G101) to the cabin, attaching it in different places with "A luminium"-type adhesive tape and "TY-RAP"-type plastic clamps.



# IT_292_72_0839_EN - E <February 20, 2014> - 11 / 22

## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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The information contained in this manual is subject to the warning provided on the information page 

# 292720839 Page 1305 December 2013 Engine vibration check - Insta llation of the accelerometer Figure 1301



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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# 292720839 Page 1306 December 2013 (2) Connection to the helicopter airframe (Refer to Figure 1302) Connect the N1 (NG) tachom eter generator as follows: (a) Remove the connector of the engine control and monitoring harness from the connector of the gas generator tachometer transm itter (“T.T.G.” conn ector). Refer to Task 71-51-00-900-801 of the Maintenance Manual. (b) Install the "NG" tachometer harness as follows:

 Install the "Y" connector of the B&K AO-1479-A-005 "NG" tachometer harness (TM5988G101) on the connector of the gas generator tachometer transmitter (“T.T.G.” connector).

 Install the "Y" connector of the B&K AO-1479-A-005 "NG" tachometer harness (TM5988G101) on the connector of t he engine control and monitoring harness.
CAUTION : MAKE SURE THAT THE CABLE DOES NOT TOUCH THE HELICOPTER CONTROLS. (c) Route the B&K AO-1479-A-005 tachometer harness (TM5988G101) to the cabin, attaching it in different places with "A luminium"-type adhesive tape and "TY-RAP"-type plastic clamps. (3) Connection of the B&K 2250-H-001 vibration anal yzer (TM5351G201) (Ref er to Figure 1302)
(a) Check the charge status of t he B&K QB-0061 battery (TM5351P202). (b) Connect the N1/NG signal output of the B&K AO-1479-A-005 tachometer harness (TM5988G101) to the “Inp ut” of the B&K WB-3487 dual channel tacho coupler (TM5988G201). (c) Connect the “Output” of the B&K WB-3487 dual channel tacho coupler (TM5988G201) to the B&K 2250-H-001 vibration analyzer (TM53 51G201) with the B&K AO-0440-D-015 BNC / LEMO cable (TM5988G301), as follows:

 “Trigger input” terminal for the N1/NG signal. (d) Connect the B&K AO-0701- D-040 accelerometer cable (TM5987G101) to the “Input” terminal of the B&K 2250-H-001 vi bration analyzer (TM5351G201).



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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The information contained in this manual is subject to the warning provided on the information page 

# 292720839 Page 1307 December 2013 Engine vibration check - Connection of the B&K 2250-H -001 vibration analyzer Figure 1302



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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The information contained in this manual is subject to the warning provided on the information page 

# 292720839 Page 1308 December 2013 C. Vibration measurement The vibration record for the 41-tooth gear includes three acquisitions: (1) Operate the B&K 2250-H-001 vibratio n analyzer (TM5351G201) as follows: (a) Press the ON-OFF push-button (1). (b) Check the date by clicking on the screen wi th the stylet on the date / time area at the bottom right, update if necessary. (c) In the menu select the relevant work card (« ARRIEL1 Z41 »). (d) Supplement all the metadatas.
NOTE : Metadata « Start up Type » : « Cold ». Metadata « Comments » : « TSN M01 = XXXX :XX h ». (2) Acquisition No. 1 : (a) Read and record the oil temperature. (b) Pulse the push-button (3) of the B&K 22 50-H-001 vibration analyz er (TM5351G201) to start data acquisition. (c) Start the engine and increase up to ground idle. The following values are recorded:

 Row vibratory data from accelerometer.

 Tachometer signal of Gas Generator from tachometer harness. (d) Pulse the push-button (3) of the B&K 22 50-H-001 vibration analyz er (TM5351G201) to stop data acquisition. (e) Pulse the push-button (4) of the B&K 22 50-H-001 vibration analyz er (TM5351G201) to store the acquired data. (f) Pulse the RESET push-button (2) of the B&K 2250-H-001 vibration analyzer (TM5351G201).
NOTE : The vibration analyzer operates for approx. five minutes from the moment you push the RESET pushbutt on. Then it automatically goes to the stand-by mode. To reactivate it, press the ON-OFF push-button. (g) Stay at a stabilized rating until you get an oil temperature between 60°C (140°F) and 65°C (149°F).
NOTE : According to external conditions, it may be necessary to stabilize the engine flight idle to reach this oil temperature. (h) Stop the engine.



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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# 292720839 Page 1309 December 2013 (3) Acquisition No. 2 : (as soon as possible)
(a) Operate the B&K 2250-H-001 vibratio n analyzer (TM5351G201) as follows: 1 Press the ON-OFF push-button (1), if the tool is in stand-by mode.
2 Supplement the metadata (Start up Type : « Hot1 »). (b) As soon as the oil temperature is between 55°C (131°F) and 60°C (140°F), pulse the push-button (3) of the B&K 2250-H-001 vibrati on analyzer (TM5351G201) to start data acquisition.
(c) Start the engine and increase up to ground idle. The following values are recorded:

 Row vibratory data from accelerometer.

 Tachometer signal of Gas Generator from tachometer harness. (d) Pulse the push-button (3) of the B&K 22 50-H-001 vibration analyz er (TM5351G201) to stop data acquisition. (e) Pulse the push-button (4) of the B&K 22 50-H-001 vibration analyz er (TM5351G201) to store the acquired data. (f) Pulse the RESET push-button (2) of the B&K 2250-H-001 vibration analyzer (TM5351G201). NOTE : The vibration analyzer operates for approx. five minutes from the moment you push the RESET pushbutt on. Then it automatically goes to the stand-by mode. To reactivate it, press the ON-OFF push-button. (g) Stay at a stabilized rating until you get an oil temperature between 60°C (140°F) and 65°C (149°F).
NOTE : According to external conditions, it may be necessary to stabilize the engine flight idle to reach this oil temperature. (h) Stop the engine. (4) Acquisition No. 3 : (as soon as possible) (a) Operate the B&K 2250-H-001 vibratio n analyzer (TM5351G201) as follows: 1 Press the ON-OFF push-button (1), if the tool is in stand-by mode.
2 Supplement the metadata (Start up Type : « Hot2 »). (b) As soon as the oil temperature is between 55°C (131°F) and 60°C (140°F), pulse the push-button (3) of the B&K 2250-H-001 vibrati on analyzer (TM5351G201) to start data acquisition.



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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The information contained in this manual is subject to the warning provided on the information page 

# 292720839 Page 1310 December 2013 (c) Start the engine and increase up to ground idle. The following values are recorded:

 Row vibratory data from accelerometer.

 Tachometer signal of Gas Generator from tachometer harness. (d) Pulse the push-button (3) of the B&K 22 50-H-001 vibration analyz er (TM5351G201) to stop data acquisition. (e) Pulse the push-button (4) of the B&K 22 50-H-001 vibration analyz er (TM5351G201) to store the acquired data. (f) Pulse the RESET push-button (2) of the B&K 2250-H-001 vibration analyzer (TM5351G201).
NOTE : The vibration analyzer operates for approx. five minutes from the moment you push the RESET pushbutt on. Then it automatically goes to the stand-by mode. To reactivate it, press the ON-OFF push-button. (g) Stop the engine. (5) Data processing (a) Disconnect the B&K 2250-H- 001 vibration analyzer (TM5351G201) as follows: 1 Disconnect and remove the B&K AO-0440-D-015 BNC / LEMO cable (TM5988G301) that co nnects the B&K 2250-H-001 vibration analyzer (TM5351G201) to the “Out put” of the B&K WB-3487 dual channel tacho coupler (TM5988G201).
2 Disconnect the N1/NG output BNC connector of the B&K AO-1479-A-005 tachometer harness (TM5988G101) from the “Input” of the B&K WB-3487 dual channel tacho coupler (TM5988G201). (b) Energize the laptop and wait until t he laptop initialization is completed. (c) If necessary, install the BZ 5503 software in the laptop. (d) Connect the B&K 2250-H-001 vibration analyzer (TM5351G201) to the laptop with the B&K AO-1494 USB / Micro U SB cable (TM5351G601). (e) Open the BZ 5503 software. Download and rename the data in the laptop.
(f) Send the three acquisitions (file by file in the following sequence: Cold - Hot1 and Hot2) to the Brüel&Kjaer server, to the following em ail address, via email (small envelope) BZ 5503 software icon:

 

### tm.z41@bkcloudservices.com

. D. Interpretation of the vibration check
Consider the vibration check results after receiving an email from TURBOMECA or the measurement report generated by the Brüel&Kjaer se rver, following the instructions of Mandatory Service Bulletin N°292 0839.



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## TURBOMECA 

# ARRIEL 1 TECHNICAL INSTRUCTION

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# 292720839 Page 1311 December 2013 E. Final steps (1) Close the BZ 5503 software and de-energize the laptop. (2) Press the push-button (1) of the B&K 2250- H-001 vibration analyzer (TM5351G201) to deenergize it. (3) Remove the B&K AO-1494 USB / Micro USB cable (TM5351G601) to disconnect the B&K 2250-H-001 vibration analyzer (TM 5351G201) from the laptop. (4) Remove the "Aluminium"-type adhesive tape an d the "TY-RAP"-type plastic clamps that hold the B&K AO-1479-A-005 tachomet er harness (TM5988G101) and the B&K AO-0701-D-040 accelerometer harness (TM5987G101) to the airframe. (5) Disconnect and remove t he B&K AO-0440-D-005 BNC / LEMO ca ble from the “Output” of the B&K WB-3487 dual channel tacho coupler (TM5988G201). (6) Disconnect the N1/NG output BNC connector of the B&K AO-1479-A-005 tachometer harness (TM5988G101) from the “I nput” of the B&K WB-3487 dual channel tacho coupler (TM5988G201). (7) Remove the B&K AO-1479-A- 005 “NG” tachometer harn ess (TM5988G101) as follows: - Remove the "Y" connector of the B&K AO -1479-A-005 "NG" ta chometer harness

(TM5988G101) from the connector of the control and monitoring harness. - Remove the "Y" connector of the B&K AO -1479-A-005 "NG" ta chometer harness

(TM5988G101) from the connector of the gas generator tachometer transmitter (“T.T.G.” connector). (8) Install the connector of the control and m onitoring harness on the connector of the gas generator tachometer transmitter (“T.T.G.” co nnector). Refer to Ta sk 71-51-00-900-801 of the Maintenance Manual. (9) Remove the B&K 4397-A accelerometer (TM5987G201) / B&K UA -2094 pot magnet (TM5987G401) / B&K AO- 0701-D-040 accelerometer cable (TM5 987G101) assembly from the front accelerometer support. (10) If necessary, remove the B&K 4397-A ac celerometer (TM5987G201) as follows: (a) Remove the B&K AO-0701- D-040 accelerometer cable (TM5987G101) from the B&K 4397-A accelerome ter (TM5987G201). (b) Remove the B&K 4397-A accelerometer (TM5987G201) from the B&K UA-2094 pot magnet (TM5987G401) / B&K UA-2095 screw HC (T M5987G301) assembly. (c) Remove the B&K UA-2095 screw HC (T M5987G301) from the B&K UA-2094 pot magnet (TM5987G401). (11) Package the removed equipment. F. Additional procedures Not applicable.



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## TURBOMECA 

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# APPENDIX

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# 292720839 Page 2 December 2013 

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# 292720839 Page 3 December 2013 

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