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<p>SERVICE WORK INSTRUCTION SWI</p><p>Document number:</p><p>1001774</p><p>Rev.no.:</p><p>3</p><p>Title:</p><p>Upgrade of Torque Arm Bushings in NM 64C/1500 and NM 72C/1500</p><p>Workplace:</p><p>Service</p><p>Rev. date R</p><p>Sign. Appd.</p><p>1</p><p>FRN BSIP</p><p>2</p><p>FRN BSIP</p><p>3</p><p>4</p><p>Prepared by: Date:</p><p>FRN 2010-03-25</p><p>5</p><p>6</p><p>7</p><p>8</p><p>9</p><p>Approved by:</p><p>BSIP</p><p>Page of</p><p>1 7</p><p>Vestas Wind Systems A/S · Alsvej 21 · 8940 Randers SV · Denmark · www.vestas.com</p><p>History of this Document</p><p>Changes in this document:</p><p>Rev. no.: Date: Description of change</p><p>1 2006-02-09 First edition</p><p>2 2006-02-16 Minor changes</p><p>03 2010-03-25 Replaced the internal crane picture in the section ‘Performance of Work’</p><p>Education Requirements of Service Technician:</p><p>No special requirements.</p><p>Required Documentation:</p><p>WKI 1001217 Service Instruction Generator - Alignment</p><p>Installation and Service Data - Document no. 5001556 for 64C and 5001166 for 72C..</p><p>Purpose:</p><p>This work instruction has been prepared due to CIM case no. 950.</p><p>Owing to some problems with the rubber bushings of the torque arms, a new bushing and torque arm</p><p>have been introduced.</p><p>Safety:</p><p>Read, understand and comply with the rules in WKI 1000711 Safety Manual and WKI 1001381 –</p><p>Turbine Safety Instructions. Do not perform the work in high winds.</p><p>Risk Assessment:</p><p>Not assessed.</p><p>Note:</p><p>Special tools are required.</p><p>If the generator is to be aligned, special tools beyond the below mentioned are required.</p><p>Tools:</p><p>Item no.:</p><p>Quantity:</p><p>Text:</p><p>60093416 1 Trigger tool with hydraulic press</p><p>301202 1 Electric chain hoist 800 kg</p><p>VT742285 1 Crane for nacelle</p><p>VT189669 1 Hydraulic pump, Plarad VAX6-W</p><p>VT730322 1 RSL 2 hydraulic wrench ¾”</p><p>VT730371 1 Eye bolt M12</p><p>238447 1 Top ¾” 36 mm</p><p>T2185200 1 Aligning tool with magnets</p><p>T3241500 1 Adjusting device for generator NM60/64/72/82</p><p>VESTAS PROPRIETARY NOTICE: This document contains valuable confidential information of Vestas Wind Systems A/S. It is protected by copyright law as an unpublished work. Vestas reserves all patent, copyright, trade secret, and</p><p>other proprietary rights to it. The information in this document may not be used, reproduced, or disclosed except if and to the extent rights are expressly granted by Vestas in writing and subject to applicable conditions. Vestas</p><p>disclaims all warranties except as expressly granted by written agreement and is not responsible for unauthorized uses, for which it may pursue legal remedies against responsible parties.</p><p>SERVICE WORK INSTRUCTION SWI</p><p>Document number:</p><p>1001774</p><p>Rev.no.</p><p>3</p><p>Workplace:</p><p>Service</p><p>Title:</p><p>Upgrade of Torque Arm Bushings in NM 64C/1500 and NM</p><p>72C/1500</p><p>Sign. date:</p><p>2010-03-25</p><p>Page of</p><p>2 7</p><p>Vestas Wind Systems A/S · Alsvej 21 · 8940 Randers SV · Denmark · www.vestas.com</p><p>Various hand tools:</p><p>Crowbar</p><p>Large pair of circlip pliers</p><p>Degreasing agent</p><p>Cleaning paper</p><p>Pair of water pump pliers</p><p>½” Socket wrench set</p><p>400 Nm Torque wrench</p><p>10”-12” Adjustable spanner</p><p>27-30-32-36 mm Ring spanner</p><p>Spare Parts:</p><p>Item no.: Quantity: Text:</p><p>NM 64C/1500</p><p>60106127 4 Gear support NM 64C (Set)</p><p>A set includes:</p><p>60111582 1 Torque arm surface treated 72C 3-layer</p><p>60106057 2 Rubber bush 3-layer (UB03 006 50)</p><p>60099837 1 Axial disc NM72/82 – 1650 (UB03 012 103)</p><p>60099838 1 Distance ring 1650 (UB03 012 104)</p><p>60034582 1 Washer ISO 7089 20-200 HV-tzn</p><p>60033168 1 Screw ISO 4017 M20x55-8.8tzn</p><p>60043424 1 Plastic stopper H74 H2</p><p>60035086 2 Dowel pin ISO 8752 Ø 8X30</p><p>NM 64C/1500 – Equipped with Metso PLH 1100 gear</p><p>60112194 4 Gear support NM 64C (Metso gear) (Set)</p><p>A set includes:</p><p>60112193 1 Rear Cup</p><p>60111582 1 Torque arm surface treated 72C 3-layer</p><p>60106057 2 Rubber bush 3-layer (UB03 006 50)</p><p>60099838 1 Distance ring 1650 (UB03 012 104)</p><p>60034582 1 Washer ISO 7089 20-200 HV-tzn</p><p>60033168 1 Screw ISO 4017 M20x55-8.8tzn</p><p>60043424 1 Plastic stopper H74 H2</p><p>60035086 2 Dowel pin ISO 8752 Ø 8X30</p><p>NM 72C/1500</p><p>60111589 4 Gear support NM72C/1500 3 layer (Set)</p><p>A set includes:</p><p>60111582 1 Torque arm surface treated 72C 3-layer</p><p>60099836 2 Rubber bush 3-layer (UB03 006 001)</p><p>60099837 1 Axial disc NM72/82 – 1650 (UB03 012 103)</p><p>60099838 1 Distance ring 1650 (UB03 012 104)</p><p>60034582 1 Washer ISO 7089 20-200 HV-tzn</p><p>60033168 1 Screw ISO 4017 M20x55-8.8tzn</p><p>60043424 1 Plastic stopper H74 H2</p><p>60035086 2 Dowel pin ISO 8752 Ø 8X30</p><p>Weights:</p><p>-</p><p>SERVICE WORK INSTRUCTION SWI</p><p>Document number:</p><p>1001774</p><p>Rev.no.</p><p>3</p><p>Workplace:</p><p>Service</p><p>Title:</p><p>Upgrade of Torque Arm Bushings in NM 64C/1500 and NM</p><p>72C/1500</p><p>Sign. date:</p><p>2010-03-25</p><p>Page of</p><p>3 7</p><p>Vestas Wind Systems A/S · Alsvej 21 · 8940 Randers SV · Denmark · www.vestas.com</p><p>Performance of the Work:</p><p>Prior to commencing the work, stop the turbine and open the emergency stop circuit.</p><p>The torque arms and the main bearing are the only points of connection between the main beams and</p><p>gear/main shaft and hub. Therefore, only dismantle one torque arm at a time.</p><p>Mount a custom-manufactured crane arm at the front of the main beam. Tighten the crane according to</p><p>5001166 Installation and Service Data – General Bolt Torques. Hook either a small electrical crane or a</p><p>chain hoist to the arm.</p><p>Loosen and unscrew the six nuts and stay bolts holding the torque arms down against the beam.</p><p>Dismantle the locking ring at the end of the torque arm shaft.</p><p>Mount an M12 lifting eye in the torque arm in which the crane can be hooked.</p><p>Slacken the second torque arm on the same side of the gear to be able to pull off the torque arm.</p><p>(Loosen the nuts but do not dismantle them).</p><p>Slacken this torque arm.</p><p>SERVICE WORK INSTRUCTION SWI</p><p>Document number:</p><p>1001774</p><p>Rev.no.</p><p>3</p><p>Workplace:</p><p>Service</p><p>Title:</p><p>Upgrade of Torque Arm Bushings in NM 64C/1500 and NM</p><p>72C/1500</p><p>Sign. date:</p><p>2010-03-25</p><p>Page of</p><p>4 7</p><p>Vestas Wind Systems A/S · Alsvej 21 · 8940 Randers SV · Denmark · www.vestas.com</p><p>If the bushing is stuck on the torque arm shaft, use a puller to pull the bushing/torque arm off the torque</p><p>arm shaft.</p><p>The new torque arm is divided in two halves. The two halves have been machined as one unit.</p><p>Therefore, it is important that they are mounted together. (Same number of upper and lower part.)</p><p>SERVICE WORK INSTRUCTION SWI</p><p>Document number:</p><p>1001774</p><p>Rev.no.</p><p>3</p><p>Workplace:</p><p>Service</p><p>Title:</p><p>Upgrade of Torque Arm Bushings in NM 64C/1500 and NM</p><p>72C/1500</p><p>Sign. date:</p><p>2010-03-25</p><p>Page of</p><p>5 7</p><p>Vestas Wind Systems A/S · Alsvej 21 · 8940 Randers SV · Denmark · www.vestas.com</p><p>Clean all bright surfaces of the new torque arms of rust inhibitor. Also clean the torque arm shaft and the</p><p>beam base of any fatty substances and dirt.</p><p>Mount a spacer ring on the torque arm shaft as illustrated in the picture below to the left. Place the lower</p><p>part of the new torque arm under the torque arm shaft. The angled ends must face the gear as</p><p>illustrated in the circles below to the right.</p><p>SERVICE WORK INSTRUCTION SWI</p><p>Document number:</p><p>1001774</p><p>Rev.no.</p><p>3</p><p>Workplace:</p><p>Service</p><p>Title:</p><p>Upgrade of Torque Arm Bushings in NM 64C/1500 and NM</p><p>72C/1500</p><p>Sign. date:</p><p>2010-03-25</p><p>Page of</p><p>6 7</p><p>Vestas Wind Systems A/S · Alsvej 21 · 8940 Randers SV · Denmark · www.vestas.com</p><p>Mount and tighten the stay bolts through the</p><p>bottom part of the new torque arm.</p><p>Mount the rubber bushings. They are supplied in</p><p>pairs too. (Held together when delivered). One of</p><p>the halves has a white mark on the rubber. The</p><p>marked half is intended for carrying the heaviest</p><p>load which means that it must be located in the</p><p>lower left-hand side (under the torque arm shaft)</p><p>and in the upper right-hand side (over the torque</p><p>arm shaft).</p><p>See also the diagram below.</p><p>SERVICE WORK INSTRUCTION SWI</p><p>Document</p><p>number:</p><p>1001774</p><p>Rev.no.</p><p>3</p><p>Workplace:</p><p>Service</p><p>Title:</p><p>Upgrade of Torque Arm Bushings in NM 64C/1500 and NM</p><p>72C/1500</p><p>Sign. date:</p><p>2010-03-25</p><p>Page of</p><p>7 7</p><p>Vestas Wind Systems A/S · Alsvej 21 · 8940 Randers SV · Denmark · www.vestas.com</p><p>Mount the upper half of the bushing. Prior to mounting the top part of the torque arm, press both halves</p><p>of the bushing against the spacer ring on the gear. Note that the angled side of the torque arm top part</p><p>must face the gear (same as on the lower part).</p><p>Press the bushings against the gear</p><p>Mount the six washers and nuts. Cross-tighten the nuts according to the Installation and Service Data</p><p>document no. 5001556 for 64C and 5001166 for 72C. When tightening the nuts, make sure that the</p><p>guide pins of the top part enter into the holes of the lower part. NOTE: When replacing the first torque</p><p>arm in one side, do not tighten up completely until the second torque arm on the same side has been</p><p>replaced. Otherwise it is impossible to pull off the second torque arm.</p><p>Finally mount the end part of the torque arm shaft.</p><p>Make sure that the guide pins enter into the holes.</p><p>NOTE: If the turbine has a Metso PLH 1100 gear, the end part to be mounted has no. 60112193.</p><p>Replace the remaining three torque arms following the same procedure.</p><p>After having replaced all torque arms, check the generator alignment. If necessary, align according to</p><p>WKI 1001217 Service Instruction Generator – Alignment.</p><p>After having finished the work, clean the turbine.</p>