{"id":2327,"date":"2023-11-08T19:31:40","date_gmt":"2023-11-08T19:31:40","guid":{"rendered":"https:\/\/mbci.mackuz.ovh\/?p=2327"},"modified":"2023-11-08T19:31:40","modified_gmt":"2023-11-08T19:31:40","slug":"facing-cylinder-head-mating-surface","status":"publish","type":"post","link":"https:\/\/mbci.mackuz.ovh\/index.php\/2023\/11\/08\/facing-cylinder-head-mating-surface\/","title":{"rendered":"Facing cylinder head mating surface"},"content":{"rendered":"

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01\u2014418 Facing cylinder head mating surface<\/strong><\/div>\n<\/div>\n<\/td>\n
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Data<\/strong><\/div>\n<\/div>\n<\/td>\n
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Total cylinder head height<\/div>\n<\/div>\n<\/td>\n
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93.9-94.0<\/div>\n<\/div>\n<\/td>\n
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Min. height after machining<\/div>\n<\/div>\n<\/td>\n
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93.1<\/div>\n<\/div>\n<\/td>\n
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Permissible unevenness of mating surfaces<\/div>\n<\/div>\n<\/td>\n
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in longitudinal direction<\/div>\n<\/div>\n<\/td>\n
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0.08<\/div>\n<\/div>\n<\/td>\n
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in cross direction<\/div>\n<\/div>\n<\/td>\n
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0.0<\/div>\n<\/div>\n<\/td>\n
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Permissible deviation in parallel of upper mating surface to lower mating surface in longitudinal direction<\/div>\n<\/div>\n<\/td>\n
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0.1<\/div>\n<\/div>\n<\/td>\n
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Peak to valley height<\/div>\n<\/div>\n<\/td>\n
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0.010<\/div>\n<\/div>\n<\/td>\n
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Pressure test with air under water in bar gauge pressure<\/strong><\/div>\n<\/div>\n<\/td>\n
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Minimum distance A with new valves and new valve seats, cylinder head parting surface not machined<\/div>\n<\/div>\n<\/td>\n
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Minimum distance A with new valves and new valve seats, cylinder head parting surface 0.4 mm milled off<\/div>\n<\/div>\n<\/td>\n
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Intake<\/div>\n<\/div>\n<\/td>\n
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3.3<\/div>\n<\/div>\n<\/td>\n
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2.9<\/div>\n<\/div>\n<\/td>\n
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Valve retainer dia. 37 mm<\/div>\n<\/div>\n<\/td>\n
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0.6<\/div>\n<\/div>\n<\/td>\n
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0.2<\/div>\n<\/div>\n<\/td>\n
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Exhaust<\/div>\n<\/div>\n<\/td>\n
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Valve retainer dia. 39 mm<\/div>\n<\/div>\n<\/td>\n
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0.04<\/div>\n<\/div>\n<\/td>\n
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0.36 standout<\/div>\n<\/div>\n<\/td>\n
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Max. distance A with new valves and machined valve seats, cylinder head parting surface not machined<\/div>\n<\/div>\n<\/td>\n
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Max. distance A with new valves and machined valve seats, cylinder head parting surface 0.4 mm milled off<\/div>\n<\/div>\n<\/td>\n
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Intake<\/div>\n<\/div>\n<\/td>\n
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4.2<\/div>\n<\/div>\n<\/td>\n
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3.8<\/div>\n<\/div>\n<\/td>\n
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Valve retainer dia. 37 mm\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 1.5<\/div>\n<\/div>\n<\/td>\n
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1.1<\/div>\n<\/div>\n<\/td>\n
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Exhaust<\/div>\n<\/div>\n<\/td>\n
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Valve retainer dia. 39 mm<\/div>\n<\/div>\n<\/td>\n
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0.94<\/div>\n<\/div>\n<\/td>\n
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0.54<\/div>\n<\/div>\n<\/td>\n
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Max. distance A is reduced by the same dimension by which the cylinder head parting surface has been machined down.<\/div>\n<\/div>\n<\/td>\n
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\"m110<\/div>\n<\/td>\n
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01.2-418\/1 F3<\/div>\n<\/div>\n<\/td>\n
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Conventional tools<\/strong><\/div>\n<\/div>\n<\/td>\n
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Surface grinding machine with milling equipment for <\/strong>light<\/strong> alloy surface<\/strong><\/div>\n<\/div>\n<\/td>\n
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e.g. made by Ruaro u. Fi., Schio\/ltaly Scledum, type RTY<\/strong><\/div>\n<\/div>\n<\/td>\n
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Knife-edged straightedge approx. 750 mm long<\/strong><\/div>\n<\/div>\n<\/td>\n
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Facing<\/strong><\/div>\n<\/div>\n<\/td>\n
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\"m110<\/div>\n<\/td>\n
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Only 0.4 <\/strong>mm material can be machined off of the cyl\u00adinder head at the mating surfaces to the crankshaft and camshaft housing.<\/div>\n
A distorted cylinder head must always be faced on both mating surfaces.<\/div>\n
Machine valve seats until the permissible distance A between the valve head and cylinder head mating sur\u00adface is reached.<\/div>\n
The timing must be adjusted, if a cylinder head mating surface is faced (05\u2014215).<\/strong><\/div>\n<\/div>\n<\/td>\n
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01.2-418\/2 F3<\/strong><\/div>\n<\/div>\n<\/td>\n
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    01\u2014418 Facing cylinder head mating surface   Data   Total cylinder head height 93.9-94.0   Min. height after machining 93.1   Permissible unevenness of mating surfaces in longitudinal direction 0.08   in cross direction 0.0   Permissible deviation in parallel of upper mating surface to lower mating surface in longitudinal direction 0.1   Peak to valley height 0.010   Pressure test with air under water in bar gauge pressure   Minimum distance A with new valves and new valve seats, cylinder head parting surface not machined Minimum distance A with new valves and new valve seats, cylinder head parting surface 0.4 mm milled off   Intake 3.3 2.9   Valve retainer dia. 37 mm 0.6 0.2   Exhaust   Valve retainer dia. 39 mm 0.04 0.36 standout   Max. distance A with new valves and machined valve seats, cylinder head parting surface not machined Max. distance A with new valves and machined valve seats, cylinder head parting surface 0.4 mm milled off   Intake 4.2 3.8   Valve retainer dia. 37 mm\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 1.5 1.1   Exhaust   Valve retainer dia. 39 mm 0.94 0.54   Max. distance A is reduced by the same dimension by which the cylinder head parting surface has been machined down.     01.2-418\/1 F3       Conventional tools   Surface grinding machine with milling equipment for light alloy surface e.g. made by Ruaro u. Fi., Schio\/ltaly Scledum, type RTY   Knife-edged straightedge approx. 750 mm long   Facing Only 0.4 mm material can be machined off of the cyl\u00adinder head at the mating surfaces to the crankshaft and camshaft housing. A distorted cylinder head must always be faced on both mating surfaces. Machine valve seats until the permissible distance A between the valve head and cylinder head mating sur\u00adface is reached. The timing must be adjusted, if a cylinder head mating surface is faced (05\u2014215).   01.2-418\/2 F3            <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29,27],"tags":[],"class_list":["post-2327","post","type-post","status-publish","format-standard","hentry","category-engine-removal-and-installation-ventilation-cran","category-m110"],"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