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#1
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Bottoms up oil filters........
After a short cruise to the Indian restaurant just up the sound and
back to the dock, the oil was hot and ready to change. After changing the oil for the third time on the new engine, I am still not confident that I'm doing something right.... My old engine had one filter that down from the fitting. The screw fitting was at the top of the filter, so it was easy to fill the oil filter with oil before screwing in onto the engine. I always liked to pre-load the filter and reduce the amount of time it would take for the engine to develop oil pressure when restarted. The new engine has two filters, and they are mounted on top of a bracket. The screw fitting is at the bottom of both filters. When the old filters are loosened for removal, there is a need to keep a bucket and a petro diaper under the filters as oil begins leaking out before the old filter can be completely unthreaded. It's messier than it should be. I am using the factory filters, and they are supposed to have a backcheck valve. You guys with "bottoms up" oil filters on your engines. Do you preload them with oil? Do you have a technique for getting the loaded filters onto the fittings without making an oily mess in the engine room? I almost feel like I should endure the oily mess to reduce the number of seconds the engine runs with the oil pressure alarm sounding. (I cranked the engine for 45 seconds, three times, so about 2 minutes fifteen seconds total with the "stop" button depressed to try to fill the empty filter cans. It still took about 5-10 seconds after the engine started for pressure to come up enough to shut off the alarm). Ideas or suggestions? |
#2
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If your filter is mounted bottom up, then I believe the proper procedure
would be to poke a hole in the top of it. This will allow the oil to drain out of the filter and back into the oil pan. At least that's what I remember from Mercruiser school. As far as trying to fill the filter before hand, I wouldn't worry about it. There are plenty of engines out there with high hours, and I doubt many people prefill the filters. Justin wrote in message ups.com... After a short cruise to the Indian restaurant just up the sound and back to the dock, the oil was hot and ready to change. After changing the oil for the third time on the new engine, I am still not confident that I'm doing something right.... My old engine had one filter that down from the fitting. The screw fitting was at the top of the filter, so it was easy to fill the oil filter with oil before screwing in onto the engine. I always liked to pre-load the filter and reduce the amount of time it would take for the engine to develop oil pressure when restarted. The new engine has two filters, and they are mounted on top of a bracket. The screw fitting is at the bottom of both filters. When the old filters are loosened for removal, there is a need to keep a bucket and a petro diaper under the filters as oil begins leaking out before the old filter can be completely unthreaded. It's messier than it should be. I am using the factory filters, and they are supposed to have a backcheck valve. You guys with "bottoms up" oil filters on your engines. Do you preload them with oil? Do you have a technique for getting the loaded filters onto the fittings without making an oily mess in the engine room? I almost feel like I should endure the oily mess to reduce the number of seconds the engine runs with the oil pressure alarm sounding. (I cranked the engine for 45 seconds, three times, so about 2 minutes fifteen seconds total with the "stop" button depressed to try to fill the empty filter cans. It still took about 5-10 seconds after the engine started for pressure to come up enough to shut off the alarm). Ideas or suggestions? |
#3
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On Mon, 07 Mar 2005 04:27:15 GMT, "Justin Webb"
wrote: If your filter is mounted bottom up, then I believe the proper procedure would be to poke a hole in the top of it. This will allow the oil to drain out of the filter and back into the oil pan. Wade through the crapola long enough and you're sure to find a nugget of wisdom. Thank you. bb |
#4
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I just went to a class last week by the local Catapiller distributer.
Even though the filters are mounted such that you can fill them they recomend that you leave them dry. They apparently do not want oil, even brand new oil, entering the engine without passing through the filters first. If you prefill the filters the oil in the filters goes directly into the engine without being filtered, they consider this to be a bad thing. |
#5
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I just went to a class last week by the local Catapiller distributer.
Even though the filters are mounted such that you can fill them they recomend that you leave them dry. They apparently do not want oil, even brand new oil, entering the engine without passing through the filters first. If you prefill the filters the oil in the filters goes directly into the engine without being filtered, they consider this to be a bad thing. ************ That's pretty surprising. I would think that running the engine for a while without oil pressure would almost automatically do more damage than running a quart of virgin, but unfiltered, oil through the engine. I guess the Cat guys probably know 1000 times more about diesels than I do, though. |
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