{"id":1824,"date":"2023-12-02T12:00:39","date_gmt":"2023-12-02T12:00:39","guid":{"rendered":"https:\/\/www.motointegrator.pt\/blog\/\/?p=1824"},"modified":"2025-11-25T12:53:14","modified_gmt":"2025-11-25T12:53:14","slug":"sinais-de-uma-polia-tensora-defeituosa","status":"publish","type":"post","link":"https:\/\/www.motointegrator.pt\/blog\/sinais-de-uma-polia-tensora-defeituosa\/","title":{"rendered":"Sinais de uma polia tensora defeituosa"},"content":{"rendered":"<h2>A polia tensora &#8211; uma pe\u00e7a de substitui\u00e7\u00e3o econ\u00f3mica<\/h2>\n<p>Quando o seu carro faz ru\u00eddos estranhos, nem sempre tem de ser um problema grave. No entanto, \u00e9 aconselh\u00e1vel visitar a oficina em qualquer caso. Especialmente em ve\u00edculos com um motor de quatro ou cinco cilindros, pode acontecer que a polia tensora esteja defeituosa se os ru\u00eddos vierem do compartimento do motor. A sua substitui\u00e7\u00e3o n\u00e3o \u00e9 muito complicada. No entanto, se n\u00e3o for efectuada, pode provocar danos graves no motor.<\/p>\n<h2>\u00c9 preciso ter mais aten\u00e7\u00e3o, especialmente no inverno<\/h2>\n<p>Especialmente no inverno, os condutores encontram-se rapidamente com problemas na polia tensora ou na <a href=\"\/produtos\/correias-trapezoidais-e-correias-multi-variadas-10301\/\">correia trapezoidal<\/a>. Isto deve-se principalmente \u00e0s baixas temperaturas exteriores e tamb\u00e9m \u00e0 elevada humidade. Se a correia trapezoidal come\u00e7ar a chiar de forma desagrad\u00e1vel, isto pode ser uma indica\u00e7\u00e3o importante de que a polia est\u00e1 defeituosa. Tamb\u00e9m \u00e9 poss\u00edvel que apenas a correia trapezoidal ou partes dela estejam defeituosas e que a polia em si n\u00e3o esteja afetada. No entanto, \u00e9 importante visitar uma oficina para que a situa\u00e7\u00e3o seja esclarecida. Em alguns ve\u00edculos, a correia de distribui\u00e7\u00e3o tamb\u00e9m \u00e9 respons\u00e1vel pela falha da polia tensora. Tamb\u00e9m neste caso, ambas as pe\u00e7as, a <a href=\"\/produtos\/correias-dentadas-1070108\/\">correia de distribui\u00e7\u00e3o<\/a> e a polia tensora, devem ser substitu\u00eddas o mais rapidamente poss\u00edvel.<\/p>\n<h2>Qual \u00e9 a fun\u00e7\u00e3o da polia tensora no ve\u00edculo?<\/h2>\n<p>A polia tensora assegura o funcionamento correto do sistema de acionamento de acess\u00f3rios. A polia garante que a correia est\u00e1 sempre corretamente tensionada neste ciclo de trabalho. Por um lado, reduz a tens\u00e3o noutros componentes, como a bomba de \u00e1gua ou o alternador, e tamb\u00e9m ajuda a proteger estas pe\u00e7as sobresselentes dispendiosas de uma falha prematura. Pois, em compara\u00e7\u00e3o com as suas tarefas, a polia \u00e9 uma pe\u00e7a de substitui\u00e7\u00e3o relativamente barata.<\/p>\n<h2>Quando \u00e9 que a polia deve ser substitu\u00edda?<\/h2>\n<p>A ferrugem que corre entre o bra\u00e7o e a base ou que escorre da polia \u00e9 um dos sintomas. A polia tamb\u00e9m deve ser verificada quanto a fissuras ou defeitos no bra\u00e7o, na caixa ou no suporte. Alguns danos s\u00f3 se tornam vis\u00edveis quando a polia \u00e9 retirada. As fugas ou a ferrugem s\u00e3o uma indica\u00e7\u00e3o de desgaste dos componentes internos. \u00c9 frequente aparecerem fissuras nos respectivos batentes e nos parafusos de fixa\u00e7\u00e3o dos rolos. Estes, portanto, devem ser substitu\u00eddos com urg\u00eancia.<\/p>\n<div class=\"product-slider\" style=\"--swiper-theme-color: #d80812;--swiper-navigation-size: 22px;--swiper-navigation-sides-offset: -25px;\"><div class=\"slider-title\"><svg id=\"fi_9219671\" enable-background=\"new 0 0 64 64\" height=\"512\" viewBox=\"0 0 64 64\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g><g><path d=\"m25.308 61.679c-3.514 0-6.373-2.859-6.373-6.373s2.859-6.372 6.373-6.372 6.373 2.858 6.373 6.372-2.859 6.373-6.373 6.373zm0-8.745c-1.308 0-2.373 1.064-2.373 2.372 0 1.309 1.064 2.373 2.373 2.373s2.373-1.064 2.373-2.373c0-1.308-1.064-2.372-2.373-2.372z\"><\/path><path d=\"m47.462 61.679c-3.514 0-6.372-2.859-6.372-6.373s2.858-6.372 6.372-6.372 6.373 2.858 6.373 6.372-2.86 6.373-6.373 6.373zm0-8.745c-1.308 0-2.372 1.064-2.372 2.372 0 1.309 1.064 2.373 2.372 2.373 1.309 0 2.373-1.064 2.373-2.373 0-1.308-1.065-2.372-2.373-2.372z\"><\/path><\/g><path d=\"m52.128 43.994h-31.419c-3.057 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class=\"line-clamp-title\" href=\"https:\/\/www.motointegrator.pt\/produto\/133987-tensor-corrente-de-distribuicao-ina-551-0011-10\" target=\"_blank\">Tensor, corrente de distribui\u00e7\u00e3o INA 551 0011 10<\/a><p>Schaeffler Ina<\/p><div class=\"price-container\"><p class=\"price\">17.79 EUR<\/p><button class=\"price-button\"><svg id=\"fi_9219671\" enable-background=\"new 0 0 64 64\" height=\"512\" viewBox=\"0 0 64 64\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g><g><path d=\"m25.308 61.679c-3.514 0-6.373-2.859-6.373-6.373s2.859-6.372 6.373-6.372 6.373 2.858 6.373 6.372-2.859 6.373-6.373 6.373zm0-8.745c-1.308 0-2.373 1.064-2.373 2.372 0 1.309 1.064 2.373 2.373 2.373s2.373-1.064 2.373-2.373c0-1.308-1.064-2.372-2.373-2.372z\"><\/path><path d=\"m47.462 61.679c-3.514 0-6.372-2.859-6.372-6.373s2.858-6.372 6.372-6.372 6.373 2.858 6.373 6.372-2.86 6.373-6.373 6.373zm0-8.745c-1.308 0-2.372 1.064-2.372 2.372 0 1.309 1.064 2.373 2.372 2.373 1.309 0 2.373-1.064 2.373-2.373 0-1.308-1.065-2.372-2.373-2.372z\"><\/path><\/g><path d=\"m52.128 43.994h-31.419c-3.057 0-5.668-2.081-6.35-5.061l-6.521-28.477c-.086-.376-.346-.698-.696-.86l-5.409-2.507c-1.252-.58-1.797-2.066-1.217-3.319.58-1.252 2.067-1.797 3.319-1.217l5.409 2.507c1.743.807 3.04 2.407 3.468 4.28l6.521 28.479c.158.692.765 1.176 1.476 1.176h31.419c.708 0 1.314-.481 1.476-1.171l5.07-21.813c.145-.62-.119-1.071-.288-1.284-.17-.214-.55-.572-1.186-.572h-37c-1.381 0-2.5-1.119-2.5-2.5s1.119-2.5 2.5-2.5h37c1.999 0 3.857.897 5.101 2.462s1.696 3.579 1.244 5.526l-5.071 21.814c-.691 2.965-3.3 5.037-6.346 5.037z\"><\/path><\/g><\/svg><path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"m8.25 4.5 7.5 7.5-7.5 7.5\" \/><\/svg><\/button><\/div><p class=\"price-info\">Inclui IVA, sem portes de envio<\/p><\/div><\/div><div class=\"swiper-pagination\"><\/div><div class=\"swiper-button-prev\"><\/div><div class=\"swiper-button-next\"><\/div><\/div><\/div>\n<p>Se a chumaceira da <a href=\"\/produtos\/polias-do-cambota-10605\/\">polia<\/a> estiver desgastada, pode verificar isso rodando a polia com a m\u00e3o, com o motor desligado e a correia retirada. Se houver ru\u00eddo, resist\u00eancia ou aspereza, pode presumir-se que o rolamento da polia ou a pr\u00f3pria polia est\u00e3o gastos. Neste caso, a polia inteira deve ser substitu\u00edda. N\u00e3o \u00e9 recomend\u00e1vel tentar instalar uma polia gasta num conjunto de polias usado. \u00c9 prefer\u00edvel substituir todo o conjunto da polia para evitar danos adicionais nos componentes.<\/p>\n<h2>Suporte da polia<\/h2>\n<p>A polia \u00e9 feita, por exemplo, de pl\u00e1stico, nylon ou a\u00e7o e tem uma superf\u00edcie ranhurada ou plana. As superf\u00edcies planas t\u00eam de ser completamente lisas e n\u00e3o podem ter quaisquer lascas, fissuras ou mossas. A superf\u00edcie ranhurada deve estar isenta de lascas, fissuras e amolgadelas e, al\u00e9m disso, n\u00e3o deve haver part\u00edculas alojadas nas ranhuras. Portanto, as respectivas pontas das ranhuras n\u00e3o devem ter alturas diferentes nem estar gastas. As polias de pl\u00e1stico t\u00eam estabilizadores nas superf\u00edcies laterais. Estes n\u00e3o podem estar partidos ou rachados. Por isso, se algum destes defeitos for vis\u00edvel, toda a polia tem de ser substitu\u00edda.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A polia tensora &#8211; uma pe\u00e7a de substitui\u00e7\u00e3o econ\u00f3mica Quando o seu carro faz ru\u00eddos estranhos, nem sempre tem de ser um problema grave. No entanto, \u00e9 aconselh\u00e1vel visitar a oficina em qualquer caso. Especialmente em ve\u00edculos com um motor de quatro ou cinco cilindros, pode acontecer que a polia tensora esteja defeituosa se os [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":15837,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[663,641,424],"tags":[3514,3516,3515,3517,3519,3520,3518],"class_list":["post-1824","post","type-post","status-publish","format-standard","has-post-thumbnail","category-automoveis","category-carrossel","category-polia-tensora","tag-correia-trapezoidal","tag-polia-tensora","tag-polia-tensora-da-correia-trapezoidal-faz-barulho-tensor-da-correia-defeituoso","tag-polia-tensora-defeituosa","tag-polia-tensora-defeituosa-sintomas","tag-polia-tensora-faz-barulho","tag-ruido-da-polia-tensora"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sinais de uma polia tensora defeituosa<\/title>\n<meta name=\"description\" content=\"Sobretudo no inverno, os condutores de autom\u00f3veis t\u00eam problemas com a polia tensora ou com a correia trapezoidal. 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