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Prop shaft seal?

Old 09-08-2015, 05:08 AM
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Default Prop shaft seal?

Hello eveyone,
Im new to boats. I have a leak coming from my propellor. I took the prop off and found couple yards of line. But I am not sure what is the prop shaft seal. Only thing that was immediate was the o ring that was cut which i replaced. But prop is still leaking.
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Old 09-08-2015, 05:46 AM
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I don't understand your description but it sounds like you could have removed the packing from your through hull shaft seal.

You don't specify if you have a direct drive inboard but I am guessing you do? If so I have found the P.S.S. system to be the best. You just need to verify the engine coupler and shaft are properly aligned to the log to be sure the seal will wear in correctly.
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Old 09-08-2015, 07:26 AM
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Ebay has Lower Unit Seal Kits with everything you might need for around $25.
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Old 09-08-2015, 03:02 PM
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Originally Posted by Aps2737 View Post
Hello eveyone,
Im new to boats. I have a leak coming from my propellor. I took the prop off and found couple yards of line. But I am not sure what is the prop shaft seal. Only thing that was immediate was the o ring that was cut which i replaced. But prop is still leaking.
Since you are new to boats and THT (welcome by the way) be sure to post the engine and driveline model. It really helps when we know what sort of equipment you have.
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Old 09-09-2015, 11:55 AM
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Originally Posted by tilemule View Post
I don't understand your description but it sounds like you could have removed the packing from your through hull shaft seal.

You don't specify if you have a direct drive inboard but I am guessing you do? If so I have found the P.S.S. system to be the best. You just need to verify the engine coupler and shaft are properly aligned to the log to be sure the seal will wear in correctly.
Definitely very frustrating when posters do not reveal what exactly they are asking about, but in this case it must be on an outboard or a sterndrive.

Aps- if you don't have a manual for your engine and drive. I suggest you check online at any of a number of sites like marinepartsonline (?) , plug in your drive's info and look at the applicable parts diagram to see what prop shaft seals are involved . Then search for how to replace it/them correctly.
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Old 09-09-2015, 02:22 PM
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A short answer to the original post is yes, wrapping mono or other line around a prop can damage the seal. My mechanic said it is the number one cause of seal failures and resultant oil leaks.
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