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I am assuming that you mean the main seal on the crankshaft. Generally replacing the main seal requires that the crankshaft be removed. Which usually means the engine has to come out. I don't know anything about the 3.0l engine. Any of the vehicles that I owned that had a main seal leak never got changed.

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โˆ™ 2008-04-15 20:33:00
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Q: How do you change the main seal on a 1990 Ranger with a 30 engine with 5 speed?
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