lower case transmission oil change

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bg5w
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lower case transmission oil change

Postby bg5w » Mon Apr 27, 2015 9:54 am

I've seen this topic in the past, but not specific to my question. Changing the lower case transmission oil without pulling the engines into the cockpit. The suggestions about running up on a bar and waiting for low tide works great, unless you're in an area with 1.5' tidal range in Florida. Does the engine need to be directly vertical, or on an angle, as long as the lower drain is lower than the higher?

Bob Gruber
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amytom
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Re: lower case transmission oil change

Postby amytom » Mon Apr 27, 2015 10:22 am

To get all the oil out it needs to be close to vertical. A partial change is still better than nothing though. The big thing is to check the oil that comes out, any water or grit and you really need to pull it and have it looked at.

Smj
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Re: lower case transmission oil change

Postby Smj » Sat May 02, 2015 6:58 pm

You could pull the lower unit of from a dinghy, change the lower unit oil then reinstall.

Marc Gershel
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Re: lower case transmission oil change

Postby Marc Gershel » Sun May 03, 2015 6:19 am

Smj wrote:You could pull the lower unit of from a dinghy, change the lower unit oil then reinstall.

WOW! Have you actually done this? I give you a lot of credit.
Marc

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Re: lower case transmission oil change

Postby Smj » Sun May 03, 2015 7:20 am

I haven't but my friend on his Seawind 1000 changes his lower unit oil and impeller this way. I'm guessing the hardest part would be disconnecting the shift rod.

amytom
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Re: lower case transmission oil change

Postby amytom » Sun May 03, 2015 10:06 am

Disconnecting the shift rod is easy. The hard part would be lining it back up swimming in a current.

Smj
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Re: lower case transmission oil change

Postby Smj » Sun May 03, 2015 9:56 pm

It can be easy to disconnect the shift rod or it can take quite some time with corrosionx and gently working it loose. I've had it go both ways.

bg5w
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Re: lower case transmission oil change

Postby bg5w » Mon May 04, 2015 12:49 pm

Thanks for the suggestions. I would think pulling the engines, and making the change in the cockpit would be easier than pulling the lower units. It's just time consuming.
My question really asks if the cavity that holds the lower unit oil is shaped more like an oval or a rectangle? If more like an oval, the drainage would be more complete.

Bob Gruber
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amytom
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Re: lower case transmission oil change

Postby amytom » Mon May 04, 2015 1:59 pm

The cavity is oval shaped. It's just the housing for the bearings that is filled up.


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