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    Mercruiser 470 Cam Seals 1985 Sea Ray Monaco 185

    As far as the camshaft is concerned, I found the same deep groove under the front water seal as others have documented, and similar light groove where the rear water seal rode. I used a micrometer to measure the camshaft and came up with .873 and some change as have others, the low end of the...
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    Mercruiser 470 Cam Seals 1985 Sea Ray Monaco 185

    I used a hammer and punch to remove the water seals and a hammer and PVC coupling to remove the front (oil) seal. I used a hammer and a device that was just slightly less than the diameter of the water seal cavity to install the water seals. I could not find a PVC piece close enough to the...
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    Mercruiser 470 Cam Seals 1985 Sea Ray Monaco 185

    I’m going to try to capture all of the concerns pressing the seals in and out I came across in the various threads on this forum, that way there in one place. The timing cover has a lip on the back where the rear water seal seats. So the water seals can only be pressed or punched out one way...
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    Mercruiser 470 Cam Seals 1985 Sea Ray Monaco 185

    I removed the timing cover and took a picture of the position of the cam seals. I wanted to duplicate this, particularly the front seal, when I installed the new seals so I could be certain they would be positioned over the speedy sleeve. My front seal is located at the base of the chamfer in...
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    Mercruiser 470 Cam Seals 1985 Sea Ray Monaco 185

    I removed seven screws from the oil pan gasket, three go into the the timing cover and I removed two on either side to try to make separating the oil pan gasket from the timing cover easier. I don’t think it helped much. I worked the razor blade between the timing cover and oil pan gasket as...
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    Mercruiser 470 Cam Seals 1985 Sea Ray Monaco 185

    I had no issues removing the stator Allen screw s. I have an alternator, so I simply set the stator aside and did not reinstall it. My impeller was also easy to remove, I heated it first to break any locktite that might have been there and it came right off. My water pump cover came off in two...
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    Mercruiser 470 Cam Seals 1985 Sea Ray Monaco 185

    Like others doing this repair I struggled with how much room I would need to pull the harmonic balancer forward even after I raised the center of the crankshaft high enough to get the puller on. As it turns out, the harmonic balancer only moves 2 1/4” forward before it clears the crankshaft, so...
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    Mercruiser 470 Cam Seals 1985 Sea Ray Monaco 185

    Before I started this project I noticed all of the available information addressed raising the engine with a hoist if the center of the crankshaft was below the deck. A hoist isn’t necessary if you can raise the motor high enough using the alignment adjusting stud. You first must remove the...
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    Mercruiser 470 Cam Seals 1985 Sea Ray Monaco 185

    This thread is an update of numerous threads, some more than ten years old with a wealth of information on replacing the cam seals in the veritable 470 engine, some of which may still be around. I added a little of my own insight and experience, but I owe a debt of thanks to all those posters...
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    470 Operators

    I’ve just finished replacing the cam seals on my 470. The project went fairly well using threads from this forum and the stern drive.com thread. I do have some additional insights though, I’d be happy to post my notes and pictures if anyone is interested. I know the 470 is getting pretty dated...
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    Oil Leak

    Did you replace the front seal on the timing cover after you pulled it?
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