{"id":2341,"date":"2023-11-08T19:47:51","date_gmt":"2023-11-08T19:47:51","guid":{"rendered":"https:\/\/mbci.mackuz.ovh\/?p=2341"},"modified":"2023-11-08T19:47:51","modified_gmt":"2023-11-08T19:47:51","slug":"repairing-and-squaring-connecting-rods","status":"publish","type":"post","link":"https:\/\/mbci.mackuz.ovh\/index.php\/2023\/11\/08\/repairing-and-squaring-connecting-rods\/","title":{"rendered":"Repairing and squaring connecting rods"},"content":{"rendered":"

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03\u2014313 Repairing and squaring connecting rods<\/strong><\/div>\n<\/div>\n<\/td>\n
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Data<\/div>\n<\/div>\n<\/td>\n
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Center of conrod bearing bore to<\/div>\n<\/div>\n<\/td>\n
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131.950<\/div>\n<\/div>\n<\/td>\n
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center of conrod bushing bore<\/div>\n<\/div>\n<\/td>\n
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130.050<\/div>\n<\/div>\n<\/td>\n
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Width of conrod at conrod bearing bore and conrod bushing bore<\/div>\n<\/div>\n<\/td>\n
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27.890 27.857<\/div>\n<\/div>\n<\/td>\n
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Basic bore for conrod bearing shells<\/div>\n<\/div>\n<\/td>\n
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51.619 51.600<\/div>\n<\/div>\n<\/td>\n
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Basic bore for conrod bushing<\/div>\n<\/div>\n<\/td>\n
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26.021 26.000<\/div>\n<\/div>\n<\/td>\n
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Conrod bushing inside dia.<\/div>\n<\/div>\n<\/td>\n
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23.013 23.007<\/div>\n<\/div>\n<\/td>\n
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Peak to valley height on inside of conrod bushing<\/div>\n<\/div>\n<\/td>\n
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0.004<\/div>\n<\/div>\n<\/td>\n
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Permissible stagger of conrod bore to conrod bushing bore in reference to a length of 100 mm<\/div>\n<\/div>\n<\/td>\n
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0.1<\/div>\n<\/div>\n<\/td>\n
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Permissible difference in parallel between axes: conrod bearing bore to conrod bushing bore in reference to a length of 100 mm<\/div>\n<\/div>\n<\/td>\n
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dia. 0.015<\/div>\n<\/div>\n<\/td>\n
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Permissible deviation of conrod bearing bore from true<\/div>\n<\/div>\n<\/td>\n
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0.020<\/div>\n<\/div>\n<\/td>\n
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Permissible difference in weight of all connecting rods of one engine<\/div>\n<\/div>\n<\/td>\n
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5 gr.<\/div>\n<\/div>\n<\/td>\n
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Tightening torque<\/strong><\/div>\n<\/div>\n<\/td>\n
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Conrod nuts<\/div>\n<\/div>\n<\/td>\n
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Initial torque<\/div>\n<\/div>\n<\/td>\n
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40-50 Nm<\/div>\n<\/div>\n<\/td>\n
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Torque angle<\/div>\n<\/div>\n<\/td>\n
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90-100\u00b0<\/div>\n<\/div>\n<\/td>\n
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Conventional tool<\/strong><\/div>\n<\/div>\n<\/td>\n
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Connecting rod checking and straightening tool<\/div>\n<\/div>\n<\/td>\n
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Made by Krupp GmbH, e.g. Model CL 6<\/div>\n<\/div>\n<\/td>\n
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5309 Meckenheim<\/div>\n<\/div>\n<\/td>\n
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03.2-313\/1 F3<\/div>\n<\/div>\n<\/td>\n
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Note<\/strong><\/div>\n
Connecting rods, which are overheated (blue discoloration) due to bearing damage, may not be re-used.<\/div>\n
The connecting rod and its cap are marked to fit together. The connecting rod stem must not show cross scoring and notches.<\/div>\n
Connecting rods with a machined conrod bushing are delivered as replacement parts.<\/div>\n
When renewing conrods pay attention to different weights of rods.<\/div>\n<\/div>\n<\/td>\n
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Repairing<\/strong><\/div>\n<\/div>\n<\/td>\n
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1 Check conrod bolts and replace if necessary (03-310).<\/div>\n<\/div>\n<\/td>\n
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2 Check conrod bolt bores.<\/div>\n<\/div>\n<\/td>\n
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Place conrod cap on a conrod bolt. If the conrod cap moves down by its own weight, the connecting rod must be replaced.<\/div>\n<\/div>\n<\/td>\n
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3 Mount connecting rod bearing cap and tighten to 40-50 Nm and 90-100\u00b0 angle of rotation torque.<\/div>\n<\/div>\n<\/td>\n
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4 Measure conrod bearing basic bore. If a basic bore exceeds the value of 51.62 mm or shows conicity, hone bearing surface of bearing cap on a surface plate up to max. 0.02 mm.<\/div>\n<\/div>\n<\/td>\n
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03.2-313\/2 F3<\/div>\n<\/div>\n<\/td>\n
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5<\/strong>\u00a0 \u00a0Press <\/strong>in new conrod bushing that oil <\/strong>bores match. <\/strong>Installation pressure 2500 Nm.<\/strong><\/div>\n
6\u00a0 \u00a0Mill or ream out conrod bushing.<\/div>\n
7\u00a0 \u00a0Hone side bearing surfaces of connecting rod on a surface plate.<\/div>\n<\/div>\n<\/td>\n
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Squaring<\/strong><\/div>\n<\/div>\n<\/td>\n
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8 Square connecting rod with a conrod tester.<\/div>\n<\/div>\n<\/td>\n
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9 Align parallel of conrod bore to conrod bushing bore.<\/div>\n<\/div>\n<\/td>\n
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103-11174<\/strong><\/div>\n<\/div>\n<\/td>\n
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10 Correct stagger of conrod bore to conrod bushing bore.<\/div>\n<\/div>\n<\/td>\n
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-11173<\/strong><\/div>\n<\/div>\n<\/td>\n
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03.2-313\/3 F3<\/div>\n<\/div>\n<\/td>\n
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    03\u2014313 Repairing and squaring connecting rods   Data   Center of conrod bearing bore to 131.950 center of conrod bushing bore 130.050 Width of conrod at conrod bearing bore and conrod bushing bore 27.890 27.857 Basic bore for conrod bearing shells 51.619 51.600 Basic bore for conrod bushing 26.021 26.000 Conrod bushing inside dia. 23.013 23.007 Peak to valley height on inside of conrod bushing 0.004 Permissible stagger of conrod bore to conrod bushing bore in reference to a length of 100 mm 0.1   Permissible difference in parallel between axes: conrod bearing bore to conrod bushing bore in reference to a length of 100 mm dia. 0.015   Permissible deviation of conrod bearing bore from true   0.020 Permissible difference in weight of all connecting rods of one engine   5 gr. Tightening torque     Conrod nuts Initial torque 40-50 Nm   Torque angle 90-100\u00b0 Conventional tool     Connecting rod checking and straightening tool Made by Krupp GmbH, e.g. Model CL 6 5309 Meckenheim   03.2-313\/1 F3       Note Connecting rods, which are overheated (blue discoloration) due to bearing damage, may not be re-used. The connecting rod and its cap are marked to fit together. The connecting rod stem must not show cross scoring and notches. Connecting rods with a machined conrod bushing are delivered as replacement parts. When renewing conrods pay attention to different weights of rods.   Repairing 1 Check conrod bolts and replace if necessary (03-310).   2 Check conrod bolt bores.   Place conrod cap on a conrod bolt. If the conrod cap moves down by its own weight, the connecting rod must be replaced.   3 Mount connecting rod bearing cap and tighten to 40-50 Nm and 90-100\u00b0 angle of rotation torque. 4 Measure conrod bearing basic bore. If a basic bore exceeds the value of 51.62 mm or shows conicity, hone bearing surface of bearing cap on a surface plate up to max. 0.02 mm.   03.2-313\/2 F3       5\u00a0 \u00a0Press in new conrod bushing that oil bores match. Installation pressure 2500 Nm. 6\u00a0 \u00a0Mill or ream out conrod bushing. 7\u00a0 \u00a0Hone side bearing surfaces of connecting rod on a surface plate.   Squaring   8 Square connecting rod with a conrod tester.   9 Align parallel of conrod bore to conrod bushing bore. 103-11174   10 Correct stagger of conrod bore to conrod bushing bore. -11173   03.2-313\/3 F3            <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[30,27],"tags":[],"class_list":["post-2341","post","type-post","status-publish","format-standard","hentry","category-crankshaft-assembly","category-m110"],"aioseo_notices":[],"featured_image_src":null,"author_info":{"display_name":"mackuz","author_link":"https:\/\/mbci.mackuz.ovh\/index.php\/author\/mackuz\/"},"_links":{"self":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2341","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/comments?post=2341"}],"version-history":[{"count":1,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2341\/revisions"}],"predecessor-version":[{"id":2342,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2341\/revisions\/2342"}],"wp:attachment":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/media?parent=2341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/categories?post=2341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/tags?post=2341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}