{"id":8858,"date":"2026-03-31T09:05:13","date_gmt":"2026-03-31T07:05:13","guid":{"rendered":"https:\/\/www.alexisdegaribaldi.com\/?page_id=8858"},"modified":"2026-04-02T14:13:06","modified_gmt":"2026-04-02T12:13:06","slug":"a","status":"publish","type":"page","link":"https:\/\/www.alexisdegaribaldi.com\/index.php\/a\/","title":{"rendered":"Atelier Pratique Milieu Moteur"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"8858\" class=\"elementor elementor-8858\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5da3390 e-flex e-con-boxed e-con e-parent\" data-id=\"5da3390\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9aac7e8 elementor-widget elementor-widget-html\" data-id=\"9aac7e8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<!DOCTYPE html>\r\n\r\n<html lang=\"fr\">\r\n\r\n<head>\r\n\r\n  <meta charset=\"UTF-8\">\r\n\r\n  <title>Atelier 2 \u2013 Intervention sur le milieu moteur Perkins : Pistons et segments<\/title>\r\n\r\n  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\r\n\r\n  <style>\r\n\r\n    body { font-family: Arial, sans-serif; line-height: 1.6; margin: 20px; }\r\n\r\n    h1, h2, h3 { color: #003366; }\r\n\r\n    ul { margin-left: 20px; }\r\n\r\n    .images { display: flex; flex-wrap: wrap; gap: 20px; margin: 20px 0; }\r\n\r\n    .images figure { max-width: 260px; }\r\n\r\n    .images img { max-width: 100%; border: 1px solid #ccc; }\r\n\r\n    .ressources, .lexique {\r\n\r\n      margin-top: 40px;\r\n\r\n      padding: 15px;\r\n\r\n      border-top: 2px solid #003366;\r\n\r\n      background: #f7f7f7;\r\n\r\n    }\r\n\r\n  <\/style>\r\n\r\n<\/head>\r\n\r\n<body>\r\n\r\n \r\n\r\n<h1>Atelier 2 \u2013 Intervention sur le milieu moteur Perkins : Pistons et segments<\/h1>\r\n\r\n \r\n\r\n<h2>Objectifs p\u00e9dagogiques<\/h2>\r\n\r\n<ul>\r\n\r\n  <li>Comprendre la d\u00e9pose du bas-moteur Perkins.<\/li>\r\n\r\n  <li>Savoir extraire et contr\u00f4ler un piston.<\/li>\r\n\r\n  <li>Mesurer et ajuster les jeux de segments.<\/li>\r\n\r\n  <li>Utiliser les outils adapt\u00e9s (pince \u00e0 circlips, comparateur, jauge d\u2019\u00e9paisseur, etc.).<\/li>\r\n\r\n  <li>R\u00e9aliser un remontage conforme aux tol\u00e9rances constructeur.<\/li>\r\n\r\n<\/ul>\r\n\r\n \r\n\r\n<h2>Consignes de s\u00e9curit\u00e9<\/h2>\r\n\r\n<ul>\r\n\r\n  <li>Travailler sur moteur froid et propre.<\/li>\r\n\r\n  <li>Porter les \u00e9quipements de protection individuelle.<\/li>\r\n\r\n  <li>Respecter les proc\u00e9dures de d\u00e9montage et remontage.<\/li>\r\n\r\n  <li>Nettoyer soigneusement toutes les pi\u00e8ces avant remontage.<\/li>\r\n\r\n<\/ul>\r\n\r\n \r\n\r\n<h2>Outils n\u00e9cessaires<\/h2>\r\n\r\n<ul>\r\n\r\n  <li>Cl\u00e9 dynamom\u00e9trique.<\/li>\r\n\r\n  <li>Pince \u00e0 circlips.<\/li>\r\n\r\n  <li>Compresseur de segments.<\/li>\r\n\r\n  <li>Jauge d\u2019\u00e9paisseur.<\/li>\r\n\r\n  <li>Pied \u00e0 coulisse \/ microm\u00e8tre.<\/li>\r\n\r\n  <li>Comparateur.<\/li>\r\n\r\n  <li>Papier abrasif fin (grain 400\u2013600).<\/li>\r\n\r\n  <li>Douilles, cl\u00e9s, maillet.<\/li>\r\n\r\n<\/ul>\r\n\r\n \r\n\r\n<h2>Proc\u00e9dure d\u00e9taill\u00e9e<\/h2>\r\n\r\n \r\n\r\n<h3>D\u00e9pose bas-moteur<\/h3>\r\n\r\n<ul>\r\n\r\n  <li>Vidanger l\u2019huile moteur.<\/li>\r\n\r\n  <li>D\u00e9poser le carter inf\u00e9rieur.<\/li>\r\n\r\n  <li>D\u00e9poser les chapeaux de bielles.<\/li>\r\n\r\n  <li>Extraire les pistons avec les bielles.<\/li>\r\n\r\n<\/ul>\r\n\r\n \r\n\r\n<h3>D\u00e9pose et contr\u00f4le des segments<\/h3>\r\n\r\n<ul>\r\n\r\n  <li>Retirer les segments avec un outil adapt\u00e9.<\/li>\r\n\r\n  <li>Nettoyer les gorges de segments.<\/li>\r\n\r\n  <li>Contr\u00f4ler le jeu \u00e0 la coupe dans le cylindre.<\/li>\r\n\r\n  <li>Valeurs constructeur :<\/li>\r\n\r\n  <ul>\r\n\r\n    <li>Segment compression : <strong>0,20 \u00e0 0,40 mm<\/strong>.<\/li>\r\n\r\n    <li>Segment racleur : <strong>0,25 \u00e0 0,50 mm<\/strong>.<\/li>\r\n\r\n  <\/ul>\r\n\r\n<\/ul>\r\n\r\n \r\n\r\n<h3>Correction par pon\u00e7age<\/h3>\r\n\r\n<ul>\r\n\r\n  <li>Poncer uniquement l\u2019extr\u00e9mit\u00e9 du segment.<\/li>\r\n\r\n  <li>Utiliser du papier abrasif grain 400\u2013600.<\/li>\r\n\r\n  <li>Poncer droit et recontr\u00f4ler apr\u00e8s chaque passe.<\/li>\r\n\r\n  <li>Ne pas d\u00e9passer la tol\u00e9rance haute.<\/li>\r\n\r\n<\/ul>\r\n\r\n \r\n\r\n<h3>Contr\u00f4le piston \/ bielle<\/h3>\r\n\r\n<ul>\r\n\r\n  <li>V\u00e9rifier le jeu axe-piston.<\/li>\r\n\r\n  <li>Contr\u00f4ler le jeu au pied de bielle.<\/li>\r\n\r\n  <li>V\u00e9rifier l\u2019ovalisation du piston.<\/li>\r\n\r\n  <li>Inspecter visuellement fissures ou traces de chauffe.<\/li>\r\n\r\n<\/ul>\r\n\r\n \r\n\r\n<h3>Remontage<\/h3>\r\n\r\n<ul>\r\n\r\n  <li>Monter les segments dans le bon ordre et orientation.<\/li>\r\n\r\n  <li>Monter l\u2019axe et les circlips avec la pince.<\/li>\r\n\r\n  <li>Lubrifier les pi\u00e8ces.<\/li>\r\n\r\n  <li>Utiliser le compresseur de segments pour insertion.<\/li>\r\n\r\n  <li>Ins\u00e9rer les pistons dans les cylindres.<\/li>\r\n\r\n  <li>Serrer les chapeaux de bielles au couple.<\/li>\r\n\r\n  <li>Remonter le carter et remplir d\u2019huile neuve.<\/li>\r\n\r\n<\/ul>\r\n\r\n \r\n\r\n<h2>Couples de serrage constructeur<\/h2>\r\n\r\n<ul>\r\n\r\n  <li>Chapeaux de bielles : <strong>45 Nm + 90\u00b0<\/strong>.<\/li>\r\n\r\n  <li>Autres couples selon sp\u00e9cifications constructeur.<\/li>\r\n\r\n<\/ul>\r\n\r\n \r\n\r\n<h2>Tol\u00e9rances constructeur<\/h2>\r\n\r\n<ul>\r\n\r\n  <li>Jeu \u00e0 la coupe segment compression : <strong>0,20 \u00e0 0,40 mm<\/strong>.<\/li>\r\n\r\n  <li>Jeu \u00e0 la coupe segment racleur : <strong>0,25 \u00e0 0,50 mm<\/strong>.<\/li>\r\n\r\n  <li>Jeu axe-piston : <strong>0,01 \u00e0 0,03 mm<\/strong>.<\/li>\r\n\r\n  <li>Jeu pied de bielle : <strong>0,02 \u00e0 0,05 mm<\/strong>.<\/li>\r\n\r\n<\/ul>\r\n\r\n \r\n\r\n<h2>Illustrations<\/h2>\r\n\r\n<div class=\"images\">\r\n\r\n  <figure>\r\n\r\n    <img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/5\/55\/Piston.jpg\" alt=\"Piston moteur\">\r\n\r\n    <figcaption>Piston moteur \u2013 source : Wikipedia.<\/figcaption>\r\n\r\n  <\/figure>\r\n\r\n \r\n\r\n  <figure>\r\n\r\n    <img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/4\/4c\/Piston_rings.jpg\" alt=\"Segments moteur\">\r\n\r\n    <figcaption>Segments moteur \u2013 source : Wikipedia.<\/figcaption>\r\n\r\n  <\/figure>\r\n\r\n \r\n\r\n  <figure>\r\n\r\n    <img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/8\/8d\/Piston_ring_compressor.jpg\" alt=\"Compresseur de segments\">\r\n\r\n    <figcaption>Compresseur de segments \u2013 source : Wikipedia.<\/figcaption>\r\n\r\n  <\/figure>\r\n\r\n \r\n\r\n  <figure>\r\n\r\n    <img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/3\/3a\/Circlip_pliers.jpg\" alt=\"Pince \u00e0 circlips\">\r\n\r\n    <figcaption>Pince \u00e0 circlips \u2013 source : Wikipedia.<\/figcaption>\r\n\r\n  <\/figure>\r\n\r\n<\/div>\r\n\r\n \r\n\r\n<div class=\"ressources\">\r\n\r\n  <h2>Ressources externes<\/h2>\r\n\r\n \r\n\r\n  <h3>Articles Wikipedia<\/h3>\r\n\r\n  <ul>\r\n\r\n    <li>\r\n\r\n      <a href=\"https:\/\/en.wikipedia.org\/wiki\/Piston\" target=\"_blank\" rel=\"noopener noreferrer\">\r\n\r\n        Piston \u2013 Wikipedia\r\n\r\n      <\/a>\r\n\r\n    <\/li>\r\n\r\n    <li>\r\n\r\n      <a href=\"https:\/\/en.wikipedia.org\/wiki\/Piston_ring\" target=\"_blank\" rel=\"noopener noreferrer\">\r\n\r\n        Piston ring \u2013 Wikipedia\r\n\r\n      <\/a>\r\n\r\n    <\/li>\r\n\r\n  <\/ul>\r\n\r\n \r\n\r\n  <h3>Vid\u00e9os YouTube<\/h3>\r\n\r\n  <ul>\r\n\r\n    <li>\r\n\r\n      <a href=\"https:\/\/www.youtube.com\/results?search_query=valve+lapping\" target=\"_blank\" rel=\"noopener noreferrer\">\r\n\r\n        Recherche YouTube : valve lapping\r\n\r\n      <\/a>\r\n\r\n    <\/li>\r\n\r\n    <li>\r\n\r\n      <a href=\"https:\/\/www.youtube.com\/results?search_query=piston+replacement\" target=\"_blank\" rel=\"noopener noreferrer\">\r\n\r\n        Recherche YouTube : piston replacement\r\n\r\n      <\/a>\r\n\r\n    <\/li>\r\n\r\n  <\/ul>\r\n\r\n<\/div>\r\n\r\n \r\n\r\n<div class=\"lexique\">\r\n\r\n  <h2>Champ lexical technique<\/h2>\r\n\r\n  <p>\r\n\r\n    piston, segment, jeu \u00e0 la coupe, gorge, axe de piston, pied de bielle, t\u00eate de bielle,\r\n\r\n    chapeau de bielle, compresseur de segments, circlips, pon\u00e7age, microm\u00e8tre, jauge d\u2019\u00e9paisseur,\r\n\r\n    carter, bas-moteur, lubrification, serrage angulaire, ovalisation, usure, friction.\r\n\r\n  <\/p>\r\n\r\n<\/div>\r\n\r\n \r\n\r\n<\/body>\r\n\r\n<\/html>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Atelier 2 \u2013 Intervention sur le milieu moteur Perkins : Pistons et segments Atelier 2 \u2013 Intervention sur le milieu moteur Perkins : Pistons et segments Objectifs p\u00e9dagogiques Comprendre la d\u00e9pose du bas-moteur Perkins. Savoir extraire et contr\u00f4ler un piston. Mesurer et ajuster les jeux de segments. Utiliser les outils adapt\u00e9s (pince \u00e0 circlips, comparateur, <a class=\"read-more\" href=\"https:\/\/www.alexisdegaribaldi.com\/index.php\/a\/\">READ MORE<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_eb_attr":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-8858","page","type-page","status-publish","hentry"],"aioseo_notices":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.alexisdegaribaldi.com\/index.php\/wp-json\/wp\/v2\/pages\/8858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alexisdegaribaldi.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.alexisdegaribaldi.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.alexisdegaribaldi.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alexisdegaribaldi.com\/index.php\/wp-json\/wp\/v2\/comments?post=8858"}],"version-history":[{"count":4,"href":"https:\/\/www.alexisdegaribaldi.com\/index.php\/wp-json\/wp\/v2\/pages\/8858\/revisions"}],"predecessor-version":[{"id":9000,"href":"https:\/\/www.alexisdegaribaldi.com\/index.php\/wp-json\/wp\/v2\/pages\/8858\/revisions\/9000"}],"wp:attachment":[{"href":"https:\/\/www.alexisdegaribaldi.com\/index.php\/wp-json\/wp\/v2\/media?parent=8858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}