Pulling engine

[piersbc]

I got a free 86 23' cuddy cabin boat....with a hydrolocked engine...locked and rusted. I'm going to pull the engine 260/V8 mercruiser and have it rebuilt. Fresh water its whole life. New starter/distributer/coil/plug wires already were on it. So two questions...How to pull it (just remove the bolts from bell housing??)...and what else do I need to do to the exhaust/intake/riser/etc?

 

[Blk-n-Blu]

Re: Pulling engine

BCP, take a look at this service bulletin:<br /> http://www.boatfix.com/merc/Bullet/01/01_13.pdf <br />Before pulling the engine you may want to try to loosen her up a bit, couldn't hurt to try.you definately want to put new manifolds,risers on a rebuild.

 

[Fishermark]

Re: Pulling engine

It's real easy to pull if necessary. <br /><br />Disconnect battery first.<br /><br />Remove the outdrive. (Some do it without removing the outdrive - it is possible, but the outdrive is easy to remove and really needs to be off in order to reinstall the engine, so go ahead and take it off now).<br /><br />Remove the two bolts on the back mounts and the two front mounts. (I have found it easier to remove the lag bolts that hold the entire front mount assembly to the stringer).<br /><br />Unplug your wiring harness, and the positive cable from the battery to the starter, and any misc ground straps. <br /><br />Undo your fuel and water lines. <br /><br />Loosen the clamps at the exhaust elbows. (I have found it easier to let the engine pull away from the elbows as you lift - a little prying at the same time helps).<br /><br />Remove the shift and control cables.<br /><br />Put a chain on the two lifting eyes (probably already on the engine). <br /><br />Lift away.<br /><br />I may be forgetting something... but it will be obvious as you begin lifting.<br /><br />Good luck!

 

[Sydmoe]

Re: Pulling engine

When I pulled my 5.7 OMC to rebuild I basically followed theis procedure<br />1)Disconnected the exhaust, trim hydraulics, wiring harness and starter<br />2)Loosen the 2 front engine mount bolts that are bolted in the stringers. <br />3) hooker a chain from the back of one head to the fron of the other side. Then used a fork lift and a strap to take some weight off.<br />4)Completly removered the 3 bolts on each side of the mount where they bolt to the block.<br />5)I loosened the 2 rear engine mounts. <br />6) hoist it slightly and forward, then rotate it 90 deg and pull it straight out of the bilge. <br />It was a peice of cake. <br /><br />When I put it back in ( outdrive was still on and not removed) I again used the fork lift to lower it in place and I simply wiggled it onto the drivesharft and sat it down on the rear engine mounts. With the weight still being supported by the fork lift I manouvered the front mounts to line them up with the three holes and put the bolts in and tighten them. I then took the weight off and tighten the large front engine mounts bolts. After about 30 min of hooking everything back up I tryed to fire it and guess what......I put the flywheel an backwards. Go back to step one.

 

[Bondo]

Re: Pulling engine

With an OMC, the game is played by Different Rules.........<br />I think Fishermark has it to a T for a Mercruiser.........<br />Especially #2.........<br />(Some do it without removing the outdrive - it is possible, but the outdrive is easy to remove and really needs to be off in order to reinstall the engine, so go ahead and take it off now).

 

[piersbc]

Re: Pulling engine

Thanks for the tips... am I going to need to re-align the engine with an alignment tool whether I take the outdrive off or not?

 

[Fishermark]

Re: Pulling engine

You can't align (or re-align ) the engine without removing the outdrive.<br /><br />For what it is worth, my dad has always simply removed and replaced the engine from his boat without ever removing the outdrive or doing anything about alignment. His argument is that if he doesn't change anything, it shouldn't change. I usually "chastise" him for it and tell him he needs to check the alignment. His problem is that the front mounts with his engine (a four cylinder) are completely rusted up and non adjustable. The last time we pulled the engine I checked his alignment - call him lucky or blessed, but the alignment was perfect.