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jamesgangnc jamesgangnc is offline
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First recorded activity by BoatBanter: Jul 2006
Posts: 389
Default Mercruiser 165hp Alpha One Outdrive 19' 1975 formula thunderbird

Just to confirm, there is one or two lines from your tilt/trim pump
that go under the engine and out the lower area of the outdrive. You
disconnected these from the tilt/trim pump and the outdrive is still
stuck up? Bummer.

Yes, the drive position is controlled by those two pistons, one on each
side of the drive. You can disconnect them at the end and the outdrive
will lower. You just have to disconnect the outside end of the
cylinder, above the prop. You can try one at a time and see if you can
get the cylinder to close by pushing on it. Normally if the line is
disconnected from the tilt/trim pump you can close the cylinder by
hand. The fluid will squirt out the disconnected line.

The only explanation I have for what you are seeing is that one or the
other or both of those cylinders is frozen.

All this worked ok before the storm? When was the last time you used
this boat?



sonofadocker wrote:
I removed all the oil lines to the outdrive to get the unit to lower
manually. I weight 250 lbs and was standing on the unit and it would
not drop down.

I am looking for another way to drop the outdrive into the water.

Can I attempt to remove the two bolts from the trim cylinders and undo
the two pistons so the outdrive will drop into the water ?

From past fall seasons my neighbors and I have kept our boats in the

water until november. i hate to get it out of the water early this
year.

again, if anyone is near barnegat nj and would like to show me what I
am doing wrong please stop by.

thanks

sonofadocker