{"id":8511,"date":"2022-03-10T20:30:39","date_gmt":"2022-03-10T20:30:39","guid":{"rendered":"https:\/\/www.hexorcism.com\/19BP\/sm1665867\/"},"modified":"2022-03-10T20:30:39","modified_gmt":"2022-03-10T20:30:39","slug":"sm1665867","status":"publish","type":"page","link":"https:\/\/www.hexorcism.com\/19BP\/sm1665867\/","title":{"rendered":"PISTON INSPECTION"},"content":{"rendered":"
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PISTON INSPECTION<\/h3>\n<\/div>\n

SM1665867<\/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 Except MX-5 (ND) VIN Serial No.300001-: The measurement position is 8.0 mm {0.31 in}<\/span> from the lower end of the piston (area with no coating on the piston skirt) and in the thrust direction.<\/div>\n
\u2022 MX-5 (ND) VIN Serial No.300001-: The measurement position is 6.5 mm {0.256 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
bpe2ue00000033<\/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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83.465\u201483.495 mm {3.2861\u20143.2872 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

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
bpe2ue00000034<\/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 {0.002\u20140.003 in}<\/div>\n
Second: 0.03\u20140.07 mm {0.0012\u20140.0027 in}<\/div>\n
Oil: 0.04\u20140.12 mm {0.002\u20140.004 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
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<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

PISTON INSPECTION SM1665867 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 Except MX-5 (ND) VIN Serial No.300001-: The measurement position is 8.0 mm {0.31 in} from the lower end of the piston (area with no coating on the piston skirt) and in the thrust direction. \u2022 MX-5 (ND) VIN Serial No.300001-: The measurement […]<\/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-8511","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/8511","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=8511"}],"version-history":[{"count":0,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/8511\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/media?parent=8511"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}