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The drive belt, or serpentine belt as it is often called, transfers power from the crank pulley to each of the accessories in your engine. In some vehicles, the drive belt also serves as a timing belt, keeping the movement of the cylinders in sync with the valves and other components of the cylinder head. A loose drive belt can compromise your vehicle’s ability to power accessories like power steering, air conditioning or your alternator, or could possibly even cause internal damage to the motor. Different vehicles have different methods of maintaining proper tension on the drive belt, but most can be adjusted at home with simple hand tools. Things You Should Know You must disconnect the battery and loosen the alternator before tightening the drive belt. Track the tension in the belt as you tighten the alternator bolts to measure how much you’re tightening it. Replace your drive belt periodically to ensure that your alternator stays in tiptop shape. 1 Disconnect the battery. Before you get started, disconnect the battery to ensure the engine cannot be started while you’re working under the hood. As a precaution, always disconnect the battery before putting your hands in the engine bay of your vehicle. Use a hand or socket wrench to loosen the nut holding the ground cable on the negative terminal of the battery, then slide it off the terminal post. You will not need to disconnect the positive cable as well.[1] Locate the negative terminal by following the black ground cable, or looking for the negative symbol - or the letters NEG. Tuck the cable along the side of the battery to ensure it can’t accidentally come into contact with the negative terminal. 2 Loosen the bolts attaching the alternator to the bracket. Many alternators are bolted to a bracket with a long slotted metal strap that allows you to adjust the angle of the alternator in relation to the engine. By loosening the bolts, you will be able to adjust the alternator’s angle to increase or decrease tension on the drive belt.[2] Loosen the two bolts going through the slot on the alternator bracket, but do not remove them. Make sure the bolts are loose enough to allow the alternator to slide within the bracket. Advertisement 3 Use a piece of wood as a pry bar to increase the tension on the belt. With the alternator bolts loosened, you will need to place a good deal of pressure on the alternator in order to make sure the drive belt is tight enough. The easiest way to do this is to use a piece of wood as a pry bar. Using wood reduces the likelihood of placing too much force on the alternator as one might with a crowbar, but one can be used carefully. The handle of a hammer tends to work well in most circumstances. Slide the piece of wood between the alternator and the engine, then pull back on the wood, increasing the tension in the drive belt as the alternator slides within the bracket loop.[3] Place enough force on the pry bar to pull the drive belt until it is tight over the alternator pulley. Choose the area of the engine you pry against carefully to ensure you do not crush any coolant lines or electrical connections. 4 Tighten the alternator bolts in the new location. With the alternator pried back and the drive belt tight, use your free hand to tighten the alternator bolts in their new position in the slot on the bracket. Once the bolts are tight enough, you should be able to release the wood you were using to pry the alternator away from the motor, leaving the alternator in its new position.[4] Make sure the bolts are tight before releasing the pry bar; otherwise the tension of the belt will pull the alternator back to its previous position. This step may be easier if you enlist a friend to help you. 5 Check the belt tension. With the alternator in its new position, applying increased tension to the drive belt, check to make sure the belt is tight enough to run the accessories properly. An easy way to test the tension of the drive belt is to hold a ruler along a stretch of the belt, then use your thumb and index finger to try to pull the midpoint of the belt away from the ruler. If you can pull the belt more than a half inch from the ruler, it is not tight enough.[5] You can also purchase belt tension testers at many auto parts stores that will tell you whether or not the belt is tight enough. If the belt is not tight enough, loosen the alternator bolts and try again. 6 Reconnect the battery. Once the belt has enough tension, you can reconnect the battery using the same hand or socket wrench you used to disconnect it. With the battery reconnected, the vehicle is ready to drive.[6] Make sure the ground cable is attached securely to the negative terminal as it will cause the vehicle to die if it comes loose. Advertisement 1 Loosen the alternator bolts or the tensioner pulley. A loose drive belt may be the result of stretching over time. If your drive belt has stretched, it should be replaced. Depending on the vehicle, there are a number of ways you may be able to loosen the tension on the drive belt. A tensioner pulley can be loosened by inserting a breaker bar or socket wrench into the hole in the center of the pulley and twisting it clockwise. In other vehicles, you will need to loosen the alternator bolts and either tip it forward or slide it toward the motor within its bracket to loosen the belt.[7] Check the service manual for your vehicle to determine which way you can reduce the tension on your drive belt. If your belt has been damage or is showing signs of excessive wear, it should be replaced instead of simply tightened. 2 Slide the old belt off of the pulleys. With the tension off of the belt, slide it off the top pulley. This will produce enough slack to remove it from all of the remaining ones. If your vehicle does not provide a diagram of how the drive belt is wound through the pulleys, take a picture of it before removing the belt to ensure you can place the new one on in the same fashion.[8] The drive belt likely snakes through a number of pulleys in order to power multiple accessories within your car. You may also be able to find a diagram of the drive belt’s route on the auto maker’s website. 3 Compare the replacement belt to the new one. Before installing a new drive belt, compare it to the old one to make sure you’ve purchased the right belt. While an old belt may stretch a bit, they should be fairly close in length and equal in width. Make sure the new belt matches the old so it will install properly.[9] The wrong belt could fail to power the vehicle’s accessories or even cause internal damage to the engine. If you feel you have purchased the wrong belt, return it to the auto parts store and get the proper belt before moving forward. 4 Run the new belt through all of the necessary pulleys. Follow the diagram or picture you took to run the new drive belt back through and around all of the pulleys the old one did. If your vehicle comes equipped with a tensioner pulley, turn it clockwise again to bring it closer to the other pulleys as you slide the belt over it last.[10] Check the belt against the diagram or picture again once you’ve finished running it to ensure it looks right. You will need to maintain pressure on the tensioner pulley while getting the belt over it, so this step may be easier with a friend to help. 5 Increase tension on the new belt. Once the belt has been run through all the necessary pulleys, either release the tensioner or use a piece of wood to pry the alternator away from the motor to increase the tension in the belt. With the belt tight, bolt the alternator in place to maintain tension.[11] Use a ruler to check to make sure the belt is under the proper amount of tension. Place the ruler along the belt and try to pull the middle of it away from the ruler. If it moves more than a half inch, it’s not tight enough. Advertisement 1 Loosen the tension on the belt. If the belt is intact and your vehicle comes equipped with a tensioner pulley, you may not be able to tighten the belt without replacing the tensioner. Most tensioners are installed using only one bolt. Start by inserting a half inch drive breaker bar or ratchet into the hole in the center of the pulley. Twist the breaker bar clockwise to reduce the tension in the belt.[12] This may not be particularly difficult if your tensioner has broken. You may also consider replacing the drive belt while doing this, as it will have to come off anyway. 2 Slide the belt off of the pulleys. Slide the belt off of the tensioner pulley first, then release the tensioner. You may choose to leave the belt where it is to avoid having to run it back through all of the pulleys, but you may also want to remove it if it is in the way of where you will be working.[13] Take note of how the belt is run through all of the pulleys if your vehicle and owner’s manual does not have a diagram to follow. If you do not have a diagram, try taking a picture of the belt with your phone to use as a guide. 3 Remove the bolt holding the tensioner into place. There will be one bolt holding the tensioner in place that passes through the tensioner into the engine block or a bracket attached to it. Use a hand or socket wrench to remove the bolt. Note the position of the locking pin sticking out of the back of the tensioner as you remove it.[14] The locking pin provides the tensioner with leverage to exert force onto the belt. You will need to re-use the bolt you remove from the old tensioner when installing the new one. 4 Insert the new tensioner, aligning the locking pin on the back. Slide the new tensioner into place, paying attention to slide the locking pin into the engine block in the same fashion the old one was when you removed it. Insert the bolt and tighten it using the same wrench you used to remove the old one.[15] Make sure to make it tight, as there will be a good amount of force on the tensioner when the vehicle is running. The tensioner will likely not seat properly without the pin inserted in the right place, so if you are having trouble getting it in, check to ensure the pin is sliding into the hole in the block or bracket. 5 Run the new drive belt through all of the necessary pulleys. Run the drive belt back through and around all of the pulleys. Use a diagram or the picture you took of them to ensure you run the belt properly. Slide a breaker bar or half inch drive ratchet into the hole in the center of the new tensioner pulley and turn it clockwise to lower it as you slip the drive belt over the tensioner pulley last. The new tensioner should hold the belt at the proper level of tension once you release it.[16] Test the tension of the belt by placing a ruler alongside it and pulling the belt away from it. If the belt will come further than a half inch away from the ruler, it is still not tight enough. Advertisement 1 Check the tension of the drive belt. If you can see any visible sag in your drive belt, it is far too loose, but tension issues are not always visible. Pinch the belt between your thumb and index fingers and try to wiggle it from top to bottom. If the belt moves more than a half of an inch or so, it is too loose and needs to be tightened or replaced.[17] You can purchase belt tensioner tools that will measure the tension of the drive belt and let you know if it is too loose at most auto parts stores. If the belt seems loose, it likely requires tightening or replacing. 2 Watch your voltage gauge. A loose drive belt cannot power the accessories as well as it is supposed to. The alternator in your vehicle is powered by the drive belt, so if you notice dimming interior lights or your voltage gauge fluctuating, there may be an issue with the drive belt.[18] Dimming interior lights and issues with your electrical gauge can both also mean an issue with your alternator. If the lights get brighter when you accelerate, the problem may be the alternator rather than the belt. 3 Take note of overheating issues. Another common issue caused by a loose drive belt is overheating. The drive belt powers the water pump in your vehicle that runs coolant throughout the engine. If the belt is too loose, it may not be able to sufficiently power the pump, resulting in higher operating temperatures and even overheating.[19] Engine heat issues may also be caused by bad coolant, a leak in your coolant system, or a faulty water pump. Be careful driving a vehicle with coolant issues, as overheating an engine can cause significant internal damage. 4 Check the voltage reaching the battery. If your vehicle does not come equipped with a voltage gauge, you can check the voltage reaching the battery using a voltmeter. Voltmeters can be purchased at most auto parts or large retail stores and can tell you how many volts are traveling through an electrical system. Touch the black sensor coming from the voltmeter to the negative terminal on the battery and the other to the positive, then check to see how many volts are flowing through the system. If the alternator is generating enough voltage, it should read between and volts.[20] The black lead from the voltmeter connects to the negative terminal on the battery. You can find the negative terminal by looking for the letters “NEG” or the negative symbol that looks like -. The red lead from the voltmeter connects to the positive terminal, which can be identified by the letters “POS” or the positive symbol that looks like +. 5 Look for signs of wear or damage on the drive belt. Even if you haven’t had electrical or coolant issues, your drive belt may still need to be replaced if there are signs of extensive wear or damage anywhere on the belt. Look for cracks that develop along the ribs of the belt, chunks missing, or frayed fabric on the top back of the belt.[21] Even under optimal conditions, drive belts will eventually wear out and begin to stretch. Look for any indications that something has been rubbing on the drive belt and make sure to address it before installing a new one. 6 Check the tensioner pulley. Many modern vehicles come equipped with a tensioner pulley that places tension on the belt. Use your vehicle’s service manual to locate the tensioner pulley and try to move it around with your hand. The tensioner is designed to withstand more force that you should be able to easily place on it with your bare hands, so if it moves, it has likely gone bad.[22] If you can see the tensioner pulley with the motor running, start it and watch for any movement in the pulley. The tensioner pulley should not move under the pressure of the belt when in motion. Advertisement Add New Question Question Is there any way to tighten the belt without using tensioner? You could rig a tensioner into it. If this is a car, I would not recommend it unless absolutely necessary. Ask a Question 200 characters left Include your email address to get a message when this question is answered. Submit Advertisement References About This Article Article SummaryXIf you’re having trouble with your power steering, air conditioning, or your engine in general, you may need to tighten your drive belt. It’s important to disconnect your battery before working on your engine to make sure it’s safe. In many cars, you can increase or decrease the tension of the drive belt by loosening the bolts on the alternator bracket. Once you’ve loosened the bolts, you’ll need to use a piece of wood as a pry bar to increase the tension on the belt. While the alternator is pried back and the drive belt is tight, you can tighten the bolts in their new position to hold the drive belt there. To test the tension of the drive belt, use your thumb and index finger to pull the midpoint of the belt away. If you can pull the belt more than a half inch, it is not tight enough. For more tips, including how to replace your car’s drive belt, read on! Did this summary help you? Thanks to all authors for creating a page that has been read 159,051 times. Reader Success Stories Filimon Okbay Feb 6, 2018 "Method used to tension the drive belt." Did this article help you?
Sanding work is a stage that is carried out before entering the finishing process to remove defects and smooth the surface of the object. The main purpose of making sanding machines with this mechanical belt system is to help and simplify the sanding process. The method for making sanding machines with mechanical belt systems is needs analysis, problem analysis and specifications, problem statements, concept design, technical analysis, work drawing and tool testing. The results of the design of the sanding machine with a mechanical belt system are obtained in the form of a design with a working drawing of a sanding machine with a mechanical belt system. The sanding machine with a mechanical belt system has specifications that are 500 mm long, 350 mm wide, and 1400 mm high. The source of driving the sanding machine with a mechanical belt system is an electric motor ¼ HP with 2800 rpm rotation. The transmission system uses pulleys. The sanding machine with a mechanical belt consists of several components, namely the engine frame, electric motor, pulleys, tables, belt aplas, and adjustment of the belt strength of the sandpaper. The belt pulley used is from ST 37 with a diameter of 25 mm and pulley rotation of 2800 rpm. Frame construction uses hollow iron measuring 40x40x3 mm from ST 37 material. The table uses 590x150 acrylic material. Discover the world's research25+ million members160+ million publication billion citationsJoin for free Terbit online pada laman web jurnal 11 No. 2 2018 63 - 69ISSN Media Elektronik 2655-5670RANCANG BANGUN MESIN AMPLAS DENGAN SISTEMMEKANIS BELTArief Ikma Putra1Yuli Yetri 2,Maimuzar 31,2,3Teknik Mesin, Politeknik Negeri Padangyuliyetri work is a stage that is carried out before entering the finishing process to remove defects and smooth the surface ofthe object. The main purpose of making sanding machines with this mechanical belt system is to help and simplify thesanding process. The method for making sanding machines with mechanical belt systems is needs analysis, problem analysisand specifications, problem statements, concept design, technical analysis, work drawing and tool testing. The results of thedesign of the sanding machine with a mechanical belt system are obtained in the form of a design with a working drawing ofa sanding machine with a mechanical belt system. The sanding machine with a mechanical belt system has specifications thatare 500 mm long, 350 mm wide, and 1400 mm high. The source of driving the sanding machine with a mechanical beltsystem is an electric motor ¼ HP with 2800 rpm rotation. The transmission system uses pulleys. The sanding machine with amechanical belt consists of several components, namely the engine frame, electric motor, pulleys, tables, belt aplas, andadjustment of the belt strength of the sandpaper. The belt pulley used is from ST 37 with a diameter of 25 mm and pulleyrotation of 2800 rpm. Frame construction uses hollow iron measuring 40x40x3 mm from ST 37 material. The table uses590x150 acrylic Belt sandpaper, Design, ST 37, aloy steel hollowAbstrakPekerjaan pengamplasan merupakan suatu tahap yang dilakukan sebelum memasuki proses finishing untukmenghilangkan cacat dan memperhalus permukaan benda. Tujuan utama dari pembuatan mesin amplas dengansistim mekanis belt ini adalah untuk membantu dan mempermudah pengerjaan pengamplasan . Metode dalampembuatan mesin amplas dengan sistim mekanis belt ini adalah analisa kebutuhan, analisa masalah danspesifikasi, pernyataan masalah, perancangan konsep, analisis teknik, pembuatan gambar kerja dan pengujian alat. Hasildari perancangan mesin amplas dengan sistim mekanis belt ini didapatkan hasil berupa desain dengan gambar kerjamesin amplas dengan sistim mekanis belt. Mesin amplas dengan sistim mekanis belt ini memiliki spesifikasi yaitu panjang500 mm, lebar 350 mm, dan tinggi 1400 mm. Sumber penggerak mesin amplas dengan sistim mekanis belt adalah motorlistrik ¼ HP dengan putaran 2800 rpm. Sistem transmisi menggunakan puli Mesin amplas dengan mekanis belt terdiridari beberapa komponen yaitu rangka mesin, motor listrik, puli, meja, belt aplas, dan penyetel keteganan belt amplas. Pulibelt yang digunakan dari bahan ST 37 berdiameter 25 mm dan putaran puli 2800 rpm. Konstruksi rangka menggunakanbesi hollow dengan ukuran 40x40x3 mm dari bahan ST 37. Meja menggunakan bahan akrilik dengan ukuran kunci Belt amplas, Perancangan, ST 37, Besi hollow1. PendahuluanKemajuan teknologi di segala bidang menuntut masyarakatharus berfikir kreatif dan ramah terhadap lingkungan. Untukmenyelaraskan kemajuan teknologi terhadap kebutuhanhidup masyarakat, setiap individu dituntut harus menguasaisuatu keahlian. Keahlian inilah yang akan dibutuhkanseseorang untuk mencukupi kebutuhan finansial individutersebut dalam menanggapi perkembangan perekonomiandan teknologi. Dewasa ini banyak sekali ditawarkan produk-produk yang berfungsi untuk mempermudah pekerjaan,dengan tujuan menambah produkivitas suatu usaha[1].Produk yang ditawarkan kebanyakan serba otomatis dancanggih. Jika diperhatikan, segala kebutuhan manusia tidaklepas dari unsur mekanis. Hampir semua alat yangdigunakan untuk membantu pekerjaan manusia berupa alat-alat mekanik bisa digerakan dengan motor listrik ataupunmotor bertenaga bensin/solar. Keuntungan dari alat mekanikadalah membuat pekerjaan yang dilakukan bisa lebih mudah Arief Ikma Putra1 Yuli Yetri 2, Maimuzar 3Jurnal Teknik Mesin JTM Vol . 11 No. 2 2018 63 – 69dan cepat. Contoh seperti mesin amplas dengan sistimmekanis belt. Mesin ini dapat digunakan untuk pekerjaanpengamplasan secara cepat dengan hasil yang lebih baik,berbeda dengan metode pengamplasan secara konvensionalyang membutuhkan lebih banyak waktu dan tenaga dalamsekali waktu pengerjaan[2]. Berdasarkan uraian di atasmaka mendorong penulis untuk merancang pembuatanmesin tersebut. Maka judul tugas akhir iniadalah ”RANCANG BANGUN MESIN AMPLASDENGAN SISTEM MEKANIS BELT”.2. Metode PenelitianTempat dan waktu pelaksanaanPembuatan dan pengujian mesin amplas mekanismebelt ini dilakukan di Bengkel Mekanik, JurusanTeknik Mesin,Diagram Alir Pembuatan Mesin AmplasMekanis BeltAdapun langkah-langkah pembuatan mesin amplasmekanis belt mulai dari tahap awal sampai tahapakhir dapat dilihat pada Gambar 1. Diagram Alir Pembuata n Mesi n AmplasMekanis BeltDeskripsi PelaksanaanMetodologi pembuatan laporan ini berisikanlangkah pembuatan suatu perencanaan laporan danpengumpulan referensi. Dalam sebuah metodologiterdapat urutan-urutan proses pengolahan datasehingga didapatkan hasil maupun urutan proses tersebut adalah sebagaiberikuta. Studi LiteraturMelakukan studi literatur yang merujukkepada beberapa referensi yangmendukung teori-teori yang berhubungandengan perancangan mesin amplasmekanis Pengumpulan DataMengumpulkan data apa saja yang yangdibutuhkan dalam proses perancanganmesin ini, yang merujuk kepada referensiyang telah di pelajari Perancangan ModelMerancang model dengan pertimbanganyang telah dilakukan denganmenggunakan software desain gambarseperti AutoCad, Catia, atau Pembuatan AlatPada tahap ini akan melaksanakan prosespembuatan alat mulai dari pembuatankomponen-komponen mesin hinggaperakitan, yaitu melakukan praktikpembuatan alat di Bengkel MekanikJurusan Teknik Mesin Politeknik NegeriPadange. Pembuatan LaporanProses pengerjaan laporan dalam bentuktulisan yang membahas perancanganpembuatan alat yang telah dan BahanDalam menentukan bahan yang akan digunakanperlu dipertimbangkan fungsi dari bahan, kondisipenggunaan bahan serta kekuatan bahan itu hal yang perlu diperhatikan dalammelakukan pemilihan bahan untuk komponen mesinadalaha. Sesuai dengan fungsinyaMaksudnya adalah pemilihan bahanharus sesuai dengan setiap komponen-komponenmemiliki fungsi yang berbeda-bedatentunya juga memiliki bahan yangberbeda pula tergantung Mudah didapatKomponen yang akan direncakan harusmemenuhi syarat sebagai suatu bahanyang mudah diperoleh di apabila susah untuk diperolehmaka diganti dengan bahan lain dalambatas-batas keamanan untuk suatukomponen Efisiensi Arief Ikma Putra1 Yuli Yetri 2, Maimuzar 3Jurnal Teknik Mesin JTM Vol . 11 No. 2 2018 63 – 69Efisiensi bahan ditinjau dari pengerjaan,penggunaan tenaga, biaya pengoperasian,serta perawatan dari bahan Bahan relatif murahPertimbangan harga relatif murahdengan kekuatan bahan yang memadaidapat dipilih sebagai alternatif bahanyang akan tugas akhir ini mencakupi alat danbahan yang akan digunakan. Adapun alat dan bahanyang digunakan adalahPeralatan PengerjaanMesin amplas mekanis belt ini dibuat denganmenggunakan peralatan peralatan utama, antara lainmesin konvensional, alat-alat perkakas dan mesin yang digunakan dalampengerjaannya [3]adalah1. Mesin Bubut2. Mesin Bor3. Mesin Gerinda Tangan4. Mesin Gerinda Potong5. Mesin Las ListrikSelain itu, adapun peralatan perkakas yangdigunakan dalam pembuatan tugas akhir ini adalah1. Gergaji potong2. Penggores3. Penitik4. Palu5. Kikir6. Sikat kawat7. Kunci pas dan kunci inggris8. Mata bor9. Amplas10. Tan g RivetUntuk menyesuaikan dimensi alat yang dibuatdengan hasil perhitungan maka perlunya dilakukanpengukuran[3]. Adapun alat ukur yang akandigunakan adalah1. Jangka sorong2. Mistar baja3. MeteranTabel 1 Alternatif pemecahan masalah konsepdesainAlternatif Pemecahan Masalah KonsepBerdasarkan perencanaan, peralatan dan bahanyang akan digunakan dalam pembuatan alat adalahPeralatan PenunjangTabel 2 Peralatan Penunjang Arief Ikma Putra1 Yuli Yetri 2, Maimuzar 3Jurnal Teknik Mesin JTM Vol . 11 No. 2 2018 63 – dan PembahasanGambar mesin amplas dengan sistem mekanis beltdapat dilihat pada Gambar 2. Mesin Amplas Dengan Sistem Mekanis BeltKeterangan1. Rangka2. Pulley3. Meja amplas4. Poros pulley5. Penyetel ketegangan beltPerhitunganDaya motor minimalPp = Fp x V....................................[4]KeteranganPp =Daya yang di butuhkanFp =Berat pulleyV=Kecepatan LinearDiketahuimpulley = 1kg n1= 2800rpmMaka Fp = m . gFp = 1 kg . 9,81 m/s² = 9,81 NV ==n = 2800 rpm = = = 293,067rad/sV = = 0,38 m/sPp = 9,81 N . m/s= 9,81 kgm/s2. 0,38 m/s= 3,727 kgm2/s3= 3,727 wattPd = Fc . PpKeterangan Pd = Daya yang di rencanakanFc = Faktor koreksi = . 3,727 Watt= 4,47 Watt= 4,47 . 0,00134 Hp= 0,0059 HpDikarenakan daya motor terendah yang ada di pasaran¼ Hp maka pada pembuatan mesin ini penulismengunakan motor ¼ putaran pulley 2............................[5]=Diketahuin1 = 2800 rpmd1 = 25 mmd2 = 46 mmMakan2 = =n2 ===1521,7 rpmMenghitung V linear P1 Arief Ikma Putra1 Yuli Yetri 2, Maimuzar 3Jurnal Teknik Mesin JTM Vol . 11 No. 2 2018 63 – 69Vp1 = =n = 2800 rpm= = = 293,067 rad/sVp1= = 0,38 m/sMenghitung V linear P2Vp2 ==n = 1521,7rpm = == 159,35 rad/sVp2== 0,38 m/sPerhitungan panjang amplasL = 2C + dp + Dp + Dp – dp²KeteranganL = panjang amplas mmC = Jarak sumbu poros mmdp = Diameter pulley penggerakDp = Diameter pulley digerakkanDiketahui Cd = 480mmdp = 25mmMakaL = 2. 480 + . 25 + 46 + . 46 – 25²= 960 + 111,47 + panjang amplas minimal Pembuatan Mesin Amplas Dengan RangkaPembuatan rangka menggunakan dua macampipa besi stalbus yaitu pipa kotak besi stalbusukuran 40x40 mm dan pipa kotak besi stalbus30x30 dilakukan untuk menentukankebutuhan bahan yang akan digunakan dalamproses pembuatan rangka. Seluruh ukuranrangka yang telah direncanakan dihitung danditotalkan sehingga didapat hasil sesuaikebutuhan. Ketersedian bahan dilapangan 1batang pipa kotak besi stalbus 40x40 mmberukuran 6 meter dan 1 batang pipa kotakbesi stalbus 30x30 mm 6 Rangka2. Pemotongan besiProses pemotongan besi diawali denganpemberian tanda bahan yang telah diukurmenggunakan spidol atau dapat dilakukan untukmenyesuaikan ukuran besi yang Pemotongan besiPada proses pemotongan perlu diperhatikanukuran tebal mata alat potong, pada proses inipenulis menggunakan gerinda potong dengan tebal Arief Ikma Putra1 Yuli Yetri 2, Maimuzar 3Jurnal Teknik Mesin JTM Vol . 11 No. 2 2018 63 – 69mata 2mm. Penempatan posisi pemotongan diatastanda yang telah diberi saat penggukuransebelumnya agar ukuran besi yang terpotongsesuai dengan rencana rangkaPengelasan bertujuan untuk menyambung seluruh besiyang telah dipotong menjadi rangka. Pada proses iniperlu diperhatikan cara pengelasan agar hasil las tidakberlobang akibat besi yang tipis. Penggunaan APDjuga sangat penting karena resiko kecelakaan kerjapada proses ini sangat besar [6].Penggerindaan sisa pengelasanHasil proses pengelasan menyisakan terak las. Teraktersebut dibuang dengan cara dipukul .6 Penggerindaan sisa lasPengamplasan permukaan rangkaPengamplasan dilakukan dengan dua proses kerjayaitu menggunakan mesin gerinda tangan denganmata gerinda amplas dan manual dengan tanganmemakai kertas amplas. Pengamplasan dilakukansecara merata terhadap seluruh permukaan memasuki tahap selanjutnya hasilpengamplasan dibersihkan menggunakan kain rangkaPengecatan dilakukan dengan tujuan menghindarkanterjadinya karat terhadap besi rangka danmemperindah tampilan rangka. Hal penting yangharus diperhatikan sebelum pengecatan yaitukebersihan permukaan rangka dari debu sisapengamplasan. Proses pengecatan juga dilakukanterhadap komponen-koponen finishing rangkaRangka yang telah dicat kemudian dikering sampaicat tersebut benar-benar melekat pada permukaanrangka. Pada tahap ini juga dilakukan pengecekanterhadap hasil rangka yang telah dibuat dicocokandengan rancangan yang telah PulleyPulley ini berfungsi sebagai tempat terletaknya beltyang akan berputar dan juga meneruskan putaran darimotor ke pulley yang lainnya dengan menggunakanbelt[7]. Pulley ke motor listrikPulley yang digunakan ada 2 yaitu pulley untuksambungan ke motor listrik dan pulley sambungan keporos. Berikut ini adalah gambar ukuran masing-masing .8 Ukuran pulley ke motor listrikPulley yang dibuat dengan bahan besi padu denganketetapan ukuran yang di tetapkan pada gambar diatas dibuat agar pulley bisa perputar dengan mudahdan ringan. Pulley yang disambung kemotor listrikdibuat dengan panjang 190 mm karena belt yang akandipakai adalah amplas yang berbentuk belt. Lubangporos pulley dibuat dengan ukuran diameter 15 mmkarena poros motor listrik berdiameter 15 mm, makadisamakan poros pulley dengan poros motor listrikyang di pakai. Arief Ikma Putra1 Yuli Yetri 2, Maimuzar 3Jurnal Teknik Mesin JTM Vol . 11 No. 2 2018 63 – 69Gambar. 9 Ukuran pulley ke porosPulley untuk poros dibuat dengan bahan besi pipadengan ketetapan ukuran yang ditetapkan padagambar diatas. Pulley yang disambung ke porosdibuat dengan panjang 110 mm. Lubang untuk porosdibuat dengan ukuran diameter 12 mm dan lubanguntuk bearing diameter 37 kedalam lubangnya 12 mm4. KesimpulanKesimpulan yang dapat diambil dari Tugas Akhir“Rancang Bangun Mesin Amplas DenganSistem Mekanis Belt”ini, adalah sebagai berikut1. Amplas terbagi menjadi 2 jenis yaitu amplasbasah dengan amplas kering. Halus dankasarnya kertas amplas ditunjukkan olehangka yang tercantum dibalik kertas amplastersebut. Semakin besar angka yang tertulismenunjukkan semakin halus danrapat susunan pasir amplas Prinsip kerja mesin amplas dengan sistemmekanis belt ini sama dengan mesin-mesinamplas kebanyakan yang mana Amplasberfungsi untuk mengikis/menghaluskanpermukaaan benda kerja dengan caradigosokkan. Yang membedakannya mesinamplas ini menggunakan belt amplas yangberputar digerakan oleh sebuah motor listrikdengan transmisi pulley. Dengan gerak beltamplas yang berputar kita cumamengarahkan benda yang akan Komponen-komponen yang ada pada mesinamplas dengan system mekanis belt iniadalaha. RangkaRangka atau meja adalah suatu bendayang digunakan untuk tempatterletaknya komponen mesin Penyetel ketegangan beltPenyetel ketangan belt ini berfungsiuntuk menyetel ketegangan cara memutar tuas penyetelnya,dengan diputar ke kiri akanmelonggarkan dan putar PulleyPulley ini berfungsi sebagai tempatterletaknya belt amplas yang akanberputar dan juga meneruskan putarandari motor ke pulley yang lainnyadengan menggunakan belt Poros PulleyPoros pulley ini adalah suatu bendayang berfungsi sebagai tempatkedudukan pulley agar pulley Daya motor minimal yang dapat digunakandi dalam pembuatan mesin ini 0,0059HPPutaran pada pulley 2 atau pulley atas 1521,7rpm V linear pada P1 0,38 m/s V linear padaP2 0,38 m/s Panjang amplas yang dibutuhkanpada konstruksi mesin ini Rujukan[1] Hadiyati, Ernani. 2009. Kajian Pendekatan PemasaranKewirausahaan dan Kinerja Penjualan Usaha Kecil. JurnalManajemen dan Kewirausahaan, Vol. 11 2 183-192.[2] E, Shigley, J dan D, Mitchell, Khurmi, dan Gupta, J. Text Book Of Machine Design.[4] Sularso dan Suga, – Dasar Perencanaan danPerencanaan Elemen Mesin. PT. Pradnya Paramita. Jakarta.[5] Course Note. 2016. Elemen Mesin 2 Semester 3. Jurusan TeknikMesin. Politeknik Negeri Padang[6] Sularso dan Kiyokatsu Suga. 2002. Dasar Perencanaan danPemilihan Elemen Mesin. Jakarta PT Pradnya Paramita[7] Course Note. 2016. Gambar Teknik 2 Semester 2. JurusanTeknik Mesin. Politeknik Negeri Padang ... Penelitian yang telah dilakukan sebelumnya antara lain pembuatan mesin yang dilakukan oleh Rofarsyam yaitu Pembuatan mesin amplas sistem sabuk penggerak motor listrik [7] dan pembuatan mesin yang dilakukan oleh Arief Ikma Putra dkk, yaitu Rancang bangun mesin amplas dengan sistem mekanis belt [8]. Pada penelitian tersebut sabuk amplas yang digerakkan oleh motor listrik digunakan untuk melakukan proses pengamplasan. ...Mesin pencoak pipa pipe notcher yang ada di pasaran saat ini harganya cukup mahal sehingga banyak bengkel-bengkel kecil masih menggunakan cara konvensional untuk melakukan pencoakan pipa. Cara yang biasa digunakan adalah dengan menggunakan gerinda tangan, sehingga membutuhkan waktu yang lama dan hasilnya kurang presisi. Untuk itu pada penelitian ini dirancang mesin pencoak pipa dengan memanfaatkan sabuk amplas sebagai V-belt yang dihubungkan dengan poros dan digerakkan oleh motor listrik. Kemudian benda kerja didekatkan pada poros matras dan selanjutnya ditekan maju sampai terbentuk profil yang diinginkan. Rancang bangun mesin pencoak pipa multi dimensi ini terbagi dalam tiga tahap. Tahap pertama konsep desain dan perencanaan komponen, dilanjutkan dengan tahap pembuatan dan terakhir adalah pengujian mesin. Dari hasil rancang bangun diperoleh bahwa mesin pencoak pipa multi dimensi ini menggunakan motor listrik 0,5 HP dan putaran 1400 rpm sedangkan rangka mesin menggunakan besi siku ukuran 4 x 4 cm. Setelah dilakukan pengujian, mesin dapat bekerja dengan baik. Untuk mencoak pipa dengan diameter 3/4 inch dibutuhkan waktu selama 0,335 menit, sedangkan untuk pipa ukuran 1 inch membutuhkan waktu selama 1,075 menit. Sedangkan profil yang dibuat menggunakan mesin ini mampu membentuk sudut antara 0° sampai dengan 30°. Pipe notcher on the market today are quite expensive so that many small workshops still use the conventional method for cutting special pipe profiles. The method commonly used is to use hand grinding, so it takes a long time and the results are less precise. For this reason, in this study was designed a pipe notcher machine using the sandpaper belt as a V-belt connected to a shaft and driven by an electric motor. Then the workpiece is brought closer to the mattress axis and then pressed forward until the desired profile is formed. The design of this multidimensional pipe notcher engine is divided into three stages. The first stage is the design concept and component planning, followed by the manufacturing stage and the last stage is machine testing. From the design results, it is found that this multi-dimensional pipe notcher machine uses an electric motor HP and a rotation of 1400 rpm while the engine frame uses 4 x 4 cm angle iron. After testing the machine can work properly. To check a 3/4 inch pipe it takes minutes, while for a 1 inch pipe it takes minutes. Meanwhile, the profiles made using this machine are capable of forming angles between 0 ° to 30 °. Irfan SantosaAhmad FaridDanar FahruyadiBuku ini dibuat dengan mempertimbangkan aspek kemudahan dalam praktek menggambar terutama bagi kalangan siswa SMK, mahasiswa, maupun praktisi. Selain itu, buku ini menghadirkan konsep untuk kemandirian pelajar, mahasiswa, dan karyawan sebagai pembimbing dengan pemahaman yang lebih sederhana untuk dipraktekkan. Akhir kata kami ucapkan terima kasih kepada semua pihak yang telah membantu dalam pembuatan buku ini. Kritik dan saran sangat kami harapkan untuk perbaikan buku REKAYASA MANUFAKTUR SIMULASI DAN ANALISA PEMBEBANAN STATIS PADA KOMPONEN MESIN ASAH GERGAJI CIRCULAR SAW ini di masa yang akan datang. Irfan SantosaGaluh Renggani WilisBuku ini dibuat dengan mempertimbangkan aspek kemudahan dalam praktek menggambar terutama bagi kalangan siswa SMK, mahasiswa, maupun praktisi. Selain itu, buku ini menghadirkan konsep untuk kemandirian pelajar, mahasiswa, dan karyawan sebagai pembimbing dengan pemahaman yang lebih sederhana untuk dipraktekkan. Akhir kata kami ucapkan terima kasih kepada semua pihak yang telah membantu dalam pembuatan buku ini. Kritik dan saran sangat kami harapkan untuk perbaikan buku REKAYASA MANUFAKTUR SIMULASI DAN ANALISA PEMBEBANAN STATIS PADA KOMPONEN MESIN ASAH GERGAJI CIRCULAR SAW ini di masa yang akan ErnaniThe concept of entrepreneurship marketing is a scientific discipline that studies about the value, the ability and the person's behavior in dealing with various problems related to business opportunities in an effort to get done. Through the concept of entrepreneurship marketing is by itself capable of creating a more focused business conditions related to attempt the achievement of those objectives. The purpose of this study is the first to know and analyze the variables include entrepreneurship marketing concepts, strategies, methods and market intelligence simultanously influence sales performance. Second, to identify and analyze variables include entrepreneurial marketing concepts, strategies, methods and market intelligence influenced partially to the sales performance. Third, to identify and analyze variables include entrepreneurial marketing concepts, strategies, methods and market intelligence dominate the sales performance. Location of research on chips and small industries tempe in Malang. Type of research is explanatory research that analyzed the relationship the dependent variable and independent variables. Tool is a multiple linear regression analysis using SPSS for windows 1600. To test the hypothesis by using F tests and t tests. From the analysis found that, first of entrepreneurial marketing variables that includes concepts, strategies, methods and market intelligence simultanously influence sales performance. Second, the variables include entrepreneurial marketing concepts, strategies, methods and market intelligence is partially an effect on the performance of the sale. Third, the strategy is entrepreneurial marketing variables that influence most of sales MitchellE, Shigley, J dan D, Mitchell, Teknik Text Book Of Machine DesignR KhurmiJ K Dan GuptaKhurmi, dan Gupta, J. Text Book Of Machine -Dasar Perencanaan dan Perencanaan Elemen MesinK Sularso Dan SugaSularso dan Suga, -Dasar Perencanaan dan Perencanaan Elemen Mesin. PT. Pradnya Paramita. Teknik 2 Semester 2. Jurusan Teknik MesinCourse NoteCourse Note. 2016. Gambar Teknik 2 Semester 2. Jurusan Teknik Mesin. Politeknik Negeri PadangDasar Perencanaan dan Pemilihan Elemen MesinKiyokatsu Sularso DanSugaSularso dan Kiyokatsu Suga. 2002. Dasar Perencanaan dan Pemilihan Elemen Mesin. Jakarta PT Pradnya Paramita
liquorstore for sale in md craigslist; description of perfume business; group policy folder permissions not applying ea marketplace; best white oak flooring strain review of sugar cane jebs high voltage 690. m1078 for sale craigslist 2007 gmc yukon battery replacement; harry potter fanfiction harry runs away from the order 0% found this document useful 0 votes139 views82 pagesDescriptionNissan livinaCopyright© © All Rights ReservedAvailable FormatsPDF, TXT or read online from ScribdShare this documentDid you find this document useful?0% found this document useful 0 votes139 views82 pagesEngine MechanicalJump to Page You are on page 1of 82 You're Reading a Free Preview Pages 7 to 8 are not shown in this preview. You're Reading a Free Preview Pages 17 to 19 are not shown in this preview. You're Reading a Free Preview Pages 25 to 44 are not shown in this preview. You're Reading a Free Preview Pages 49 to 76 are not shown in this preview. Reward Your CuriosityEverything you want to Anywhere. Any Commitment. Cancel anytime. CaraMenyetel Karburator Mio Agar Irit. Pada dasarnya menyetel atau menyeting karburator pada suatu kendaraan motor itu sangatlah mudah, dan bahkan hal tersebut bisa dilakukan oleh setiap orang. Namun apabila kalian menyetel karburator motor secara asal-asalan, maka hal tersebut akan menyebabkan performa motor kalian menjadi tidak stabil bahkan Pada sistem pengisian V belt berfungsi untuk meneruskan putaran mesin ke alternator. Apabila tegangan V belt kurang maka akan menyebabkan terjadinya slip sehingga kecepatan putaran alternator kurang dan akibatnya out put alternator Juga pemeriksaan arus dan tegangan pengisianPenurunan tegangan V belt disebabkan oleh keausan V belt karena faktor usia atau perubahan penyetelan. Kerusakan yang terjadi pada V belt akibat dimakan usia, diantaranya V belt aus, elastisitas menurun dan V belt menjadi pecah. apabila kerusakan pada V belt tidak diperhatikan maka terdapat kemungkinan V belt putus pada saat kondisi mesin dalam pemeriksaan V belt, yaituLepas V belt dari kemungkinan retak, rip lepas retak atau cacatPasang kembali dan setel tegangan V belt dengan menekan dengan kekuatan 10 kg, standar defleksi untuk belt lama = 7-10mm dan untuk belt baru = 5-7 dan menyetel V BeltUntuk jenis v belt juga harus memeriksa pemasangannya terhadap pully. Pemeriksaan Belt tipe multi V. Besar difleksi untuk belt lama sebesar 7-8 mm, sedangkan belt baru 5-7 mm dengan tegangan belt 45-55 kg untuk belt baru dan 20-35 kg untuk belt posisi pemasangan Belt pada puliCara Perawatan V BeltYang tidak kalah penting yang harus anda ketahui adalah cara kerja dari V belt itu sendiri. Adapun cara kerjanya adalh sebagai berikut Melakukan Service BerkalaLakukanlah service berkala agar performa V belt mobil anda tetap terjaga. Selain itu anda juga bisa mencoba cara service mobil sendiri. Apabila anda habis melakukan perjalanan jauh atau pada saat jarak tempuh yang sudah ditempuh oleh kendaraan anda mencapai 10. 000 KM sebaiknya gantilah V belt kendaraan V BeltAgar performa V belt anda terjaga, sebaiknya setiap 6 bulan sekali minimal anda harus melakukan penggantian V belt, sekalipun jarak tempuhnya masih kurang dari 10. 000 Km, namun sebaiknya per 6 bulan seklai gantilah V belt kendaraan anda ya Pengecekan Secara VisualSelain anda melakukan perawatan mesin mobil secara rutin ke bengkel resmi, ada baiknya anda juga harus melakukan pengecekan secara visual pada V belt mobil anda ya sobat, agar anda juga mengetahui apakah kondisi V belt anda masih layak pakai atau tidak. Jika memang anda temukan sudah dalam keadaaan retak atau tipis, amka jangan nunggu 6 bulan dulu ya sobat, tetapi jika sudah dalam keadaan seperti itu segerah ganti dengan yang Pengecekan Secara ManualYang tidak kalah penting, yang harus anda lakukan adalah dengan mengecek kekencangan dari V belt mobil anda. Pastikan kondisi V belt mobil anda tidak terlalu kencang dan tidak terlalu kendur juga, pastikan sesuai dengan ukuran dari V belt anda terlalu kendur, maka bisa mengakibatkan slip, dan apabila tertalu kencang dapat membuat komponen yang lain seperti halnya komponen mesin mobil lengkap dan yang diputar tidak akan bertahan lama atau awet. Post Views 377cara menyetel ketegangan drive belt
