{"id":10672,"date":"2022-03-10T20:30:58","date_gmt":"2022-03-10T20:30:58","guid":{"rendered":"https:\/\/www.hexorcism.com\/19BP\/sm2841686\/"},"modified":"2022-03-10T20:30:58","modified_gmt":"2022-03-10T20:30:58","slug":"sm2841686","status":"publish","type":"page","link":"https:\/\/www.hexorcism.com\/19BP\/sm2841686\/","title":{"rendered":"PISTON INSPECTION"},"content":{"rendered":"
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PISTON INSPECTION<\/h3>\n<\/div>\n

SM2841686<\/p>\n

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id011000502100<\/p>\n

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Caution<\/div>\n<\/dd>\n
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\u2022 If the piston is replaced, replace the piston, piston pin, and the snap ring as a single component.<\/div>\n<\/dd>\n<\/dl>\n

1.Measure the piston outer diameter using the micrometer.<\/p>\n

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\u2022 The measurement position is 12.0 mm {0.472 in}<\/span> from the lower end of the piston (area with no coating on the piston skirt) and in the thrust direction.<\/div>\n
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\u2015 If it is not within the specification, replace the piston.<\/div>\n<\/dd>\n<\/dl>\n<\/dd>\n<\/dl>\n\n\n\n
<\/td>\n\n\n\n\n
<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
btstze00000010<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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Standard piston outer diameter<\/div>\n<\/dd>\n<\/dl>\n
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88.965\u201488.995 mm {3.5026\u20143.5037 in}<\/div>\n<\/dd>\n<\/dl>\n<\/div>\n

2.Measure the cylinder bore diameter. (See CYLINDER BLOCK INSPECTION<\/a>.)<\/p>\n

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3.Calculate the cylinder-to-piston clearance from the cylinder bore diameter and the piston outer diameter.<\/p>\n

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\u2022 If the clearance exceeds the maximum specification, replace the piston or cylinder block.<\/div>\n<\/dd>\n<\/dl>\n
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Standard clearance between piston and cylinder<\/div>\n<\/dd>\n<\/dl>\n
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0.0250\u20140.0450 mm {0.00099\u20140.00177 in}<\/div>\n<\/dd>\n<\/dl>\n<\/div>\n
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Maximum clearance between piston and cylinder<\/div>\n<\/dd>\n<\/dl>\n
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0.066 mm {0.0026 in}<\/div>\n<\/dd>\n<\/dl>\n<\/div>\n

4.Measure the piston-to-ring groove clearance along the perimeter using a feeler gauge. For the O-ring, measure the clearance with the O-ring assembled to the piston.<\/p>\n

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\u2022 If the clearance exceeds the maximum specification, replace the piston or piston ring.<\/div>\n<\/dd>\n<\/dl>\n\n\n\n
<\/td>\n\n\n\n\n
<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
btstze00000011<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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Standard clearance between piston ring and ring groove<\/div>\n<\/dd>\n<\/dl>\n
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Top: 0.04\u20140.08 mm {0.0016\u20140.0031 in}<\/div>\n
Second: 0.03\u20140.07 mm {0.0012\u20140.0027 in}<\/div>\n
Oil: 0.03\u20140.09 mm {0.0012\u20140.0035 in}<\/div>\n<\/dd>\n<\/dl>\n<\/div>\n
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Maximum clearance between piston ring and ring groove<\/div>\n<\/dd>\n<\/dl>\n
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Top: 0.12 mm {0.0047 in}<\/div>\n
Second: 0.10 mm {0.0039 in}<\/div>\n
Oil: 0.17 mm {0.0067 in}<\/div>\n<\/dd>\n<\/dl>\n<\/div>\n<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n

<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

PISTON INSPECTION SM2841686 id011000502100 Caution \u2022 If the piston is replaced, replace the piston, piston pin, and the snap ring as a single component. 1.Measure the piston outer diameter using the micrometer. \u2022 The measurement position is 12.0 mm {0.472 in} from the lower end of the piston (area with no coating on the piston skirt) and in the thrust direction. \u2015 If it is not within the specification, replace the piston. btstze00000010 Standard piston […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-10672","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/10672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/comments?post=10672"}],"version-history":[{"count":0,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/10672\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/media?parent=10672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}