{"id":2879,"date":"2023-11-17T23:23:04","date_gmt":"2023-11-17T22:23:04","guid":{"rendered":"https:\/\/mbci.mackuz.ovh\/?p=2879"},"modified":"2023-11-17T23:23:05","modified_gmt":"2023-11-17T22:23:05","slug":"checking-and-machining-valves-2","status":"publish","type":"post","link":"https:\/\/mbci.mackuz.ovh\/index.php\/2023\/11\/17\/checking-and-machining-valves-2\/","title":{"rendered":"Checking and machining valves"},"content":{"rendered":"

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05\u2014280 Checking and machining valves<\/strong><\/div>\n<\/div>\n<\/td>\n
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Data<\/strong><\/div>\n<\/div>\n<\/td>\n
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Intake valve<\/div>\n<\/div>\n<\/td>\n
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Exhaust valve<\/div>\n<\/div>\n<\/td>\n
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Valve retainer dia.<\/div>\n<\/div>\n<\/td>\n
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39.7-39.9<\/div>\n<\/div>\n<\/td>\n
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34.1-34.3<\/div>\n<\/div>\n<\/td>\n
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Valve stem dia.<\/div>\n<\/div>\n<\/td>\n
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9.92-9.94<\/div>\n<\/div>\n<\/td>\n
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Valve length<\/div>\n<\/div>\n<\/td>\n
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131.5<\/div>\n<\/div>\n<\/td>\n
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Code number on stem end<\/div>\n<\/div>\n<\/td>\n
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E 617 00<\/div>\n<\/div>\n<\/td>\n
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A 617 00 27<\/div>\n<\/div>\n<\/td>\n
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Filled-in sodium<\/div>\n<\/div>\n<\/td>\n
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without<\/div>\n<\/div>\n<\/td>\n
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with<\/div>\n<\/div>\n<\/td>\n
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Valve seat plating<\/div>\n<\/div>\n<\/td>\n
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valve seat nitride-hardened<\/div>\n<\/div>\n<\/td>\n
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when new<\/div>\n<\/div>\n<\/td>\n
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2.54<\/div>\n<\/div>\n<\/td>\n
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2.49<\/div>\n<\/div>\n<\/td>\n
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Height „h” of valve retainer<\/div>\n<\/div>\n<\/td>\n
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limit value<\/div>\n<\/div>\n<\/td>\n
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2.0<\/div>\n<\/div>\n<\/td>\n
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2.0<\/div>\n<\/div>\n<\/td>\n
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Adjusting angle for machining valves<\/div>\n<\/div>\n<\/td>\n
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30 + 15′<\/div>\n<\/div>\n<\/td>\n
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Permissible runout at valve stem and valve seat max.<\/div>\n<\/div>\n<\/td>\n
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0.03<\/div>\n<\/div>\n<\/td>\n
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Valve shaft wear (wear limit)<\/div>\n<\/div>\n<\/td>\n
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0.05<\/div>\n<\/div>\n<\/td>\n
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Conventional tools<\/strong><\/div>\n<\/div>\n<\/td>\n
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Valve cone grinder<\/div>\n
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valve cone machining tool<\/div>\n<\/div>\n<\/td>\n
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e.g. made by Matra-Werke GmbH<\/div>\n
D-6000 Frankfurt\/Main 8<\/div>\n
e.g. made by Hunger, D-8000 Miinchen<\/div>\n<\/div>\n<\/td>\n
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Note<\/strong><\/div>\n<\/div>\n<\/td>\n
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Exhaust valves are filled with sodium.<\/div>\n
When scrapping valves, pay attention to safety rules. Do not melt valves filled with sodium, since there is a risk of explosion, and do not <\/strong>use such valves for making tools (punch, etc.), without first removing filled-in sodium.<\/div>\n<\/div>\n<\/td>\n
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05.8-280\/1 F 2<\/div>\n<\/div>\n<\/td>\n
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Be careful when removing sodium from valve, since sodium mixed with water and watery solutions reacts heavily explosive, while the resulting hydrogen gas may cause fires.<\/div>\n
Sodium from cut-up or broken-up valves can be neu\u00adtralized in a mixture comprising 2 liters of spirit of alcohol and 1 liter of water put into a vessel and placed in the open air.<\/div>\n
Valves filled with sodium can be collected and ship\u00adped for neutralizing to: Garantieprtifstelle Werk Stuttgart-Unterturkheim.<\/div>\n<\/div>\n<\/td>\n
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Checking and machining<\/strong><\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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1 Clean valves and check visually.<\/div>\n
Valves with a burnt valve retainer, with insufficient height „h” of valve retainer and valves with worn out or scored valve stem should be replaced.<\/div>\n<\/div>\n<\/td>\n
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2 Measure runout on valve stem. If runout exceeds 0.03 mm, replace valve.<\/div>\n<\/div>\n<\/td>\n
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3\u00a0 \u00a0Machine valve seat.<\/div>\n
Refer to operating instructions of machining tool and make sure of a 30\u00b0 adjusting angle.<\/div>\n
4\u00a0 \u00a0Measure runout on valve seat and height „h” of valve retainer.<\/div>\n
As soon as the limit values are attained, replace valve.<\/div>\n<\/div>\n<\/td>\n
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05.8-280\/2<\/div>\n<\/div>\n<\/td>\n
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    05\u2014280 Checking and machining valves   Data Intake valve Exhaust valve Valve retainer dia. 39.7-39.9 34.1-34.3 Valve stem dia. 9.92-9.94   Valve length 131.5   Code number on stem end E 617 00 A 617 00 27 Filled-in sodium without with Valve seat plating valve seat nitride-hardened     when new 2.54 2.49   Height „h” of valve retainer   limit value 2.0 2.0   Adjusting angle for machining valves 30 + 15′   Permissible runout at valve stem and valve seat max. 0.03   Valve shaft wear (wear limit) 0.05   Conventional tools   Valve cone grinder or valve cone machining tool e.g. made by Matra-Werke GmbH D-6000 Frankfurt\/Main 8 e.g. made by Hunger, D-8000 Miinchen   Note   Exhaust valves are filled with sodium. When scrapping valves, pay attention to safety rules. Do not melt valves filled with sodium, since there is a risk of explosion, and do not use such valves for making tools (punch, etc.), without first removing filled-in sodium.   05.8-280\/1 F 2       Be careful when removing sodium from valve, since sodium mixed with water and watery solutions reacts heavily explosive, while the resulting hydrogen gas may cause fires. Sodium from cut-up or broken-up valves can be neu\u00adtralized in a mixture comprising 2 liters of spirit of alcohol and 1 liter of water put into a vessel and placed in the open air. Valves filled with sodium can be collected and ship\u00adped for neutralizing to: Garantieprtifstelle Werk Stuttgart-Unterturkheim.   Checking and machining 1 Clean valves and check visually. Valves with a burnt valve retainer, with insufficient height „h” of valve retainer and valves with worn out or scored valve stem should be replaced.   2 Measure runout on valve stem. If runout exceeds 0.03 mm, replace valve.   3\u00a0 \u00a0Machine valve seat. Refer to operating instructions of machining tool and make sure of a 30\u00b0 adjusting angle. 4\u00a0 \u00a0Measure runout on valve seat and height „h” of valve retainer. As soon as the limit values are attained, replace valve.   05.8-280\/2          <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48,44],"tags":[],"class_list":["post-2879","post","type-post","status-publish","format-standard","hentry","category-engine-timing-valves","category-om617"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t