Detroit Diesel Troubleshooting Diagrams

Archive for the ‘Oil Seal’ tag

Series 60 Crankshaft Front Oil Seal

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Current seals feature a lay down sealing lip of low-friction PTFE with unidirectional spiral pumping grooves. An outer dust-exclusion lip keeps airborne dirt away from the primary sealing lip. The sealing lip does not touch the crankshaft, because an integral wear sleeve provides the running surface and protects the lip during installation. A separate replacement wear sleeve is not needed. The wear sleeve and outer carrier are joined together, forming a unitized seal assembly. ‪

Because of the spiral grooves on the sealing lip, a front crankshaft seal will leak if installed at the rear, and a rear crankshaft seal will leak if installed at the front. ‪

Wet-flywheel-housing applications require a double-lip rear seal to prevent transmission oil from migrating into the engine. This seal is similar to the single lip seals except for the extra lip, and the wear sleeve and outer carrier are not joined together. ‪

Series 60 Crankshaft Front Oil Seal Series 60 Crankshaft Front Oil Seal

Written by sam

October 8th, 2011 at 7:40 am

Posted in Engine

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Series 60 Crankshaft Rear Oil Seal

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An oil seal is fitted between each end of the crankshaft and the bores of the flywheel housing and gear case cover to retain the lubricating oil in the crankcase. In certain applications, the seal must also prevent transmission oil from migrating into the engine. Seals are pressed into the bores after the housing or cover is assembled to the engine.

Series 60 Crankshaft Rear Oil Seal Series 60 Crankshaft Rear Oil Seal

Written by sam

October 8th, 2011 at 7:38 am

Posted in Engine

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