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Max Online: 36273 @ 01/23/13 02:34 PM
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#11197510 - 10/31/15 12:57 PM Water in the lower unit
PaulGrapevine Online   content
TFF Guru

Registered: 04/02/08
Posts: 10701
Loc: Grapevine, Texas
Went to change out my lower unit fluid this week. It came out milky green. Never had this problem before. How hard is it to put new seals on one? Always done my one water pumps, carbs, fuel lines and about anything else needed. Can't decide if I want to tackle it or pull it off and take it somewhere. Motor is a 1977 Johnson 175. Thanks in advance for any input.

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#11198816 - 11/01/15 06:32 AM Re: Water in the lower unit [Re: PaulGrapevine]
sbump26 Offline
Extreme Angler

Registered: 03/10/04
Posts: 1863
Loc: Arlington, TX
Mine leaks a little too. I use a good synthetic gear lube that doesn't seem to allow the water to mix. I will drain off the water after it has a chance to settle to the bottom (water is the first thing that comes out on mine). I drain off the cup or so of water and add gear lube back. When it gets down to the teens temperature wise I will drain it all out and refill later. I also change it all out twice a season between March and September. I always use new nylon washers every time I open a screw. I need to get some more, thanks for reminding me!
_________________________
Put the plug in.

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#11198830 - 11/01/15 06:43 AM Re: Water in the lower unit [Re: PaulGrapevine]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10537
Loc: Littlefield Tx & Lake A. H. US...
You will have to find out where your leak is. Requires pressure testing with a special tool. Most common is the prop seals. Inspect the prop seals for signs of leaking or damage. Other than that the only choice is to replace all of the seals.
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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#11198867 - 11/01/15 07:21 AM Re: Water in the lower unit [Re: sbump26]
PaulGrapevine Online   content
TFF Guru

Registered: 04/02/08
Posts: 10701
Loc: Grapevine, Texas
Originally Posted By: sbump26
Mine leaks a little too. I use a good synthetic gear lube that doesn't seem to allow the water to mix. I will drain off the water after it has a chance to settle to the bottom (water is the first thing that comes out on mine). I drain off the cup or so of water and add gear lube back. When it gets down to the teens temperature wise I will drain it all out and refill later. I also change it all out twice a season between March and September. I always use new nylon washers every time I open a screw. I need to get some more, thanks for reminding me!

What type of oil are you using? Thought about doing something similar at least until I can get it fixed.

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#11198870 - 11/01/15 07:24 AM Re: Water in the lower unit [Re: gary purdy]
PaulGrapevine Online   content
TFF Guru

Registered: 04/02/08
Posts: 10701
Loc: Grapevine, Texas
Originally Posted By: gary purdy
You will have to find out where your leak is. Requires pressure testing with a special tool. Most common is the prop seals. Inspect the prop seals for signs of leaking or damage. Other than that the only choice is to replace all of the seals.

Thanks for the input. Will check the prop shaft. The motor still has all original seals in it. I figure 37 years was a good run. You know about what it runs to get new seals put in one? If I pull the lower unit and reinstall it.

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#11198996 - 11/01/15 08:28 AM Re: Water in the lower unit [Re: PaulGrapevine]
Pat Goff Offline
TFF Team Angler

Registered: 01/29/05
Posts: 4996
Loc: Marble Falls/Seadrift
Keep running it with water in it. Those gears aren't stainless, they'll start to corrode, and that will pretty much be their doom.

Fix it before you run it anymore, you haven't found some miracle cure, you've been lucky.
_________________________
Pat Goff
Marble Falls/Seadrift TX

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#11199298 - 11/01/15 11:27 AM Re: Water in the lower unit [Re: PaulGrapevine]
JimmyP Offline
Pro Angler

Registered: 11/26/12
Posts: 802
Loc: Waxahachie, Texas
Unless you wanna pop for a new lower unit you need to take it off and get it fixed. Water diluted oil will not lube it correctly and will allow the gears and bearings to corrode. Bearings don't last long when they get rust pits in them. You can pay em a little now or pay em a lot later, it's your choice.

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#11199670 - 11/01/15 03:12 PM Re: Water in the lower unit [Re: PaulGrapevine]
PaulGrapevine Online   content
TFF Guru

Registered: 04/02/08
Posts: 10701
Loc: Grapevine, Texas
Thanks for the input guys. Going to put a new set of seals in it. Got a pm from someone local that can help me out.

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