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Thread: Water in lower unit
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09-29-2017, 01:17 PM #1
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Water in lower unit
1995 Merc......Just did gear oil change since it had been 2 years and had maybe a spoon full of chocolate milk at the very first then pure oil came out...could this be due to condensation since boat sits outside all the time and the sun does shine on lower unit in the am and then cools off later in afternoon.....i know a stupid question huh??
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09-29-2017, 01:39 PM #2
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that wouldnt bother me at all. I have a leak and just havent got around to finding what seal is out, I get all milk oil after just one day.
1973 Viper - sold
1978 Viking - sold
1995 XB02
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09-29-2017, 05:47 PM #3
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Seal kits are way cheaper than gear cases.
RockTeam Junk
No sparkling wiggles in here, only dump truck grinches.
"Screamin Heathen"
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Bruce2 liked this post
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09-29-2017, 05:56 PM #4
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Might pull lower unit and take it to shop for them to pressure check it....i have a fishing tournament up next week and boat going to sit in the water for 3 days...would rather be safe than sorry.
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09-29-2017, 08:36 PM #5
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Most often, not always, the culprits are the prop shaft seals. They can be changed without disassembly. Remove prop and thrust washer and see if there is fishing line around shaft. Happens a lot.
RockTeam Junk
No sparkling wiggles in here, only dump truck grinches.
"Screamin Heathen"
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09-29-2017, 09:39 PM #6
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Buddy at repair shop going to see if he has all the seals and we just going to reseal the hole thing after all it is 22 years old.
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10-02-2017, 11:54 AM #7
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Good call.
Go Time
2003XS GS 225 Promax/ 260 / 280
26 Regulator twin 250 EFI
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10-03-2017, 09:22 PM #8
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Lower unit all resealed and ready to reinstall...
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10-04-2017, 06:06 AM #9
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Make sure you vacuum test it. I found several units that still leaked following installation of a seal kit because the problem was a groove worn in the driveshaft where the seals in the water pump base ride.
Go Time
2003XS GS 225 Promax/ 260 / 280
26 Regulator twin 250 EFI
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10-04-2017, 06:30 AM #10
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Yep they vacuumed tested and pressure tested unit...
Originally Posted by Go Time
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