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 GATORTAIL LOWER UNIT SEAL REPLACEMENT 
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Fri Oct 30, 2015 8:26 am
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Fri Oct 30, 2015 8:33 am
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Fri Oct 30, 2015 8:50 am
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Fri Oct 30, 2015 9:14 am
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Fri Oct 30, 2015 9:24 am
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Fri Oct 30, 2015 9:48 am
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Fri Oct 30, 2015 9:53 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
I'm gonna finish the rear seals tonight and take some more pics to finish this thread up. I hope this thread helps folks just trying to pay some back from all the help I get from this site.

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Fri Oct 30, 2015 9:57 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Nice thread doc! :geek:

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Fri Oct 30, 2015 10:19 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Thats a good write up. It will really help out many in the future.


Fri Oct 30, 2015 5:53 pm
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Sat Oct 31, 2015 6:46 am
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Sat Oct 31, 2015 7:02 am
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Sat Oct 31, 2015 7:15 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Thanks for the thread HS. I'm sure it will help someone in the near future. I can tell you from experience, loosening the motor mount bolts (not removing them) is the easiest way to get the belt both on and off. I was able to just push the cleaned up belt back down to the bottom of the belt housing (prior to mounting the outdrive) and slip it onto the front pulley once the LU is bolted back onto the BH. Then just tip the motor back and slide it over the top pulley.

I do have one question tho...are you sure the two rear seals go back in opposite directions? I'm pretty sure mine both came out facing inward (cup side toward the boat) and are slightly spaced apart from each other.

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Sat Oct 31, 2015 10:18 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
cheniermudder wrote:
Thanks for the thread HS. I'm sure it will help someone in the near future. I can tell you from experience, loosening the motor mount bolts (not removing them) is the easiest way to get the belt both on and off. I was able to just push the cleaned up belt back down to the bottom of the belt housing (prior to mounting the outdrive) and slip it onto the front pulley once the LU is bolted back onto the BH. Then just tip the motor back and slide it over the top pulley.

I do have one question tho...are you sure the two rear seals go back in opposite directions? I'm pretty sure mine both came out facing inward (cup side toward the boat) and are slightly spaced apart from each other.

I'm pretty sure cause when i looked at the one facing the bearing it was the cup side filled with grease. I got the one closest to the prop out and it fell flat side down the cup also had some dirt and a little grass in it so I'm not sure if that's how their supposed to be but that's how mine came from gatortail. Maybe someone else that knows for sure will chime in soon.

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Sat Oct 31, 2015 10:36 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
I'll PM Max. Have him read over the thread. He rebuilds these units all the time and helped me thru mine.

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Sat Oct 31, 2015 1:05 pm
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
cheniermudder wrote:
I'll PM Max. Have him read over the thread. He rebuilds these units all the time and helped me thru mine.

let me know what he says and I'll edit the thread If need all I did was put it back together how it came apart.

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Sat Oct 31, 2015 1:41 pm
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Or mine is wrong and I need to fix it!!!

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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
I've always taken them out and re installed them both lips facing the prop. Basically you cannot over pressurize the lower unit. Grease can slip past seal but water cannot come in.
Really I doubt it will be an issue having them oppose each other.


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Sun Nov 01, 2015 8:04 pm
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
MaXXis85 wrote:
I've always taken them out and re installed them both lips facing the prop. Basically you cannot over pressurize the lower unit. Grease can slip past seal but water cannot come in.
Really I doubt it will be an issue having them oppose each other.


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I was wrong maxxis and cm were right on how the seals should face and I've edited the thread according to what gatortail told me thanks for catching that guys. I'm gonna run them like they are and see how long it lasts cause its back in the water and I don't feel like messing with it right now

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Mon Nov 02, 2015 11:01 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
I don't blame you there. Just keep an eye for grease around that wear sleeve. If you're not changing grease through the season, it should be fine. But you may want to check it periodically to make sure it's not getting watered down. Thats just me tho....I tend to be anal about that crap.

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Mon Nov 02, 2015 5:32 pm
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Post GATORTAIL LOWER UNIT SEAL REPLACEMENT
All your answers to the way the seals should be installed are in previous threads. Next time take a sec to search. It would have saved you a lot of trouble. I do applaud you putting this together.

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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
BayouStateHunter wrote:
All your answers to the way the seals should be installed are in previous threads. Next time take a sec to search. It would have saved you a lot of trouble. I do applaud you putting this together.

Yeah the search on this site sucks. I probably could have dug deeper about the rear seal or called gatortail ahead of time but either way its all here now. This thread is way more in depth than the other threads I've seen so maybe it will help others a little better. I posted earlier I've edited the thread to explain the right way to install them.

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Tue Nov 03, 2015 9:55 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
This is a great how to thread with an excellent title. Maybe this one will be easy for people to find when they search.Thanks again.


Tue Nov 03, 2015 7:43 pm
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Sticky worthy. Mods?


Tue Nov 03, 2015 7:45 pm
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Any suggestions on removing the front seal wear ring?... Mine doesn't want to budge..thinking about putting a torch on it..


Wed Dec 23, 2015 5:17 pm
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
If you're replacing it, just put a pipe wrench on it to get it turning, then some pliers, channel locks, or vise grips and tap the tool lightly with a hammer to slide the sleeve off.

If you're reusing because it's not worn, then a strap wrench or something to get a good grip like that should work.


Wed Dec 23, 2015 5:24 pm
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
I'll give it a shot..thanks


Wed Dec 23, 2015 5:29 pm
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Put pipe wrench on it, got it to budge a little. Tried the vise grips and a rubber mallet, to beat it off. Still can't slide it down the shaft at all..thought about using some BP blaster under it. I'm worried I'm going to bend it and get it stuck on the shaft. Have you ever heard of someone having to cut it off?


Sat Dec 26, 2015 7:59 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Subsrcibed. Thanks for posting!!

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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
CCM wrote:
Put pipe wrench on it, got it to budge a little. Tried the vise grips and a rubber mallet, to beat it off. Still can't slide it down the shaft at all..thought about using some BP blaster under it. I'm worried I'm going to bend it and get it stuck on the shaft. Have you ever heard of someone having to cut it off?


50% acetone and 50% atf.

It's some bad stuff and will creep into just about anything.


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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
changing mine at the moment and cannot get the taper ring out of the pull, beat the crap the of out it with a rubber mallet, soaked it in pb blaster, put a whole lot of pressure on the middle allen wrench hole and nothing, even tried heating it up and nothing worked. any thing else to try ?

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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Run the allen bolt in the remove hole, tight and they usually pop right off. If not, get it tight and smack the gear next to the taper lock. If rebuilt numerous GT lower not one was a bitch to remove.

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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Soak it in PB Blaster for a day or two then beat that bitch some more

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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
How much water in the LU grease warrants a seal change? I am not seeing any grease in the belt housing. I am noticing grease around the lower seal/prop; not a whole lot, but I have had raffia grass wrapped up in it and fishing line... I just pumped in new grease and 10 or so drops of water came out. I pump new grease in every 5-6 trips. Previously have seen a drop or two.

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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
How about a link to both of these replacement parts.

That would be terrific.


Mon Oct 31, 2016 2:57 pm
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Any water is bad. Replace the seal


Mon Oct 31, 2016 3:02 pm
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Russ wrote:
Mods?


What are those?


Tue Nov 01, 2016 8:24 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Lmao


Tue Nov 01, 2016 8:35 am
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Post Re: GATORTAIL LOWER UNIT SEAL REPLACEMENT
Changing prop shaft seals on my 17gtr how do you get the bearing out of the bearing cup thanks

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