How A Lower Unit Fills Up With Water

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Опубликовано:

31 янв 2024

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Комментарии : 67

@alanberner-h5j День назад

very good , clear speaking , easy too follow

@BornAgainBoating 5 часов назад

Thank you

@DrewHall-un8sn 24 дня назад

I'm impressed with your ability to say "shift shaft" without messing up. On the serious side you're doing great work. That lower unit looks a lot like my Nissan.

@kuang01 5 месяцев назад

more and more great content came up making the channel a boat mechanic library! thank you as always!🎉

@malekodesouza7255 5 месяцев назад

I had my lower on a Suzuki 150 leak. Tech told me it was the upper seal. He re-sealed the unit and so far, so good.

@crispernator 5 месяцев назад

Gday mate another great video with tips on what to do and where to look , ive seen a number of ways to get those prop seals out and although they seem fairly easy you have to be extreamly carfull as you said not to scratch that shaft take care .

@jamesyoung6829 Месяц назад

For a layperson like me these videos are fascinating but also scary when you think of all the components in an engine or lower unit that could fail at any time without warning! 😮

@mikencrew8885 5 месяцев назад

Man you are killing it with the videos. Love it!! ❤❤🎉🎉🎉🙌🙌🙌

@dannyvision730 2 дня назад

Good stuff !

@cmetzenberg 5 месяцев назад

Just had milky oil. Shaft seals looked crummy. Watched one of your videos. Replaced seals. Pressure tested good

@thurmondhomeinspections5946 23 дня назад

Hey Aaron. Love the channel. Always great content and have been a subscriber for some time. I’ve got a 2003 Yamaha 90 Tlr 2 stroke. I’m going to die on that simple 2 stroke hill. It Wasn’t circulating water so I rebuilt the water pump. Didn’t help. I had to go through the exhaust intake (absolutely gross) and pull the power head to extract bolts. While I was at it I replaced all the gaskets and thoroughly cleaned everything. Got it all back together and now get far more water than this baby has seen in a long time. So much so, that it’s leaking water out of the top of the drive shaft but under the power head (not into the bottom cowling). Just above the mid section towards the transom where the drive shaft spins. Right above the apron. I’m not sure what to do at this point. So I started to rebuild the water pump again hoping to avoid pulling the power head off once more. Any ideas?? I have been spinning my wheels trying to sort this thing out. Once I get the lower unit back on I’ll fire it up to see if that helped. If not I guess I’ll pull the power head and my hair out.

@rockhavenfarms7213 5 месяцев назад

Love from Durban South Africa bro. Keep up the videos as we have been using them as our "shop manual " since I found your Chanel back in 2019.

@SniperViper198 5 месяцев назад

Hey born again boating. Here's a tip my dad taught me. He replaces theower unit springs in the oil seal with an o ring. Same on the trailer bearings. I haven't had to replace trailer bearings since 2004. So where saltwater touches we use an o ring instead of the spring. Remember tk use a slightly smaller o ring

@gregfeldman6818 5 месяцев назад

Interesting! Great Comment. I’m a little afraid to experiment on customer jobs, but, may someday try it on one of my projects

@BornAgainBoating 4 месяца назад

Interesting! Never heard of that but I like it! :)

@howardparsons3371 Месяц назад

love the great content and information on the lower ends. Keep up the wonderful work.

@matthewtrudeau4616 Месяц назад

Awesome video! Thank you. Learned a lot!

@CaptDavesSportfishing 5 месяцев назад

THAT BOAT is a treasure trove of youtube content for ya, huh? I wish I had room to buy/restore a ALUMINUM ole junker.

@guyanesegamer1693 5 месяцев назад

I did one it was worth it

@rockhavenfarms7213 5 месяцев назад

You know there's something t an old boat when someone with access to literal tens of boats at his disposal chooses to only play on the one.

@CaptDavesSportfishing 5 месяцев назад

The one that he'll flip...duh yeah. @@rockhavenfarms7213

@gregfeldman6818 5 месяцев назад

“THAT BOAT” is Lucky Aaron found her/him

@PapaMav Месяц назад

Great vid; thank you.

@kaotix147 3 месяца назад

Thanks for video. I recently purchase a 91 chris craft with a 3.0l omc cobera stern drive. I believe the engine is a 89 thought not 100% on that. I need to replace the screw dip stick gasket, vent gasket and drain plug gasket. It been super difficult trying to find the correct part as I see o-rings, flat gasket, and also what appears to be a hard plastic material gasket. Any advice in how to find the correct gasket?

@jerryq1000 5 месяцев назад

More great information. Helps to know what's inside so if there is an. issue, it's not quite as intimidating.

@slimmm723 3 месяца назад

excellent. What about a cracked housing?

@thetruejuanalto 2 месяца назад

if the lube gets refilled does it stop the aeration and warping of seals? or are they sealed units that require replacement of seals before servicing...? ty ty

@boshmarine7696 5 месяцев назад

Well explained thank a lot

@acme9538 2 месяца назад

What is the estimated life under normal use these Yamaha seals last? I'm at 575 trouble free hours on a Yamaha F70 . . . best motor I've ever had. Great Video . . . new subscriber !

@transientboater 5 месяцев назад

Doing a confessional, beads are in hand for penance. I never used a crush washer on vent or bleed. Why, one may ask. It came down to doing a trip where I had to make schedule. To button up the list to leave, I had to change the lower units lube. Yep, lost the washers in one of those plastic catch cans with 16 quarts of old oil. I digress a moment on this- it was a wal mart catch can that never would drain in to its well without drilling out the drain. Yeah, the first washer went into the drink. I pondered that for a moment. 'do I use the remaining washer at the vent or for the drain on the lower unit'? I had teflon tape for gas pipe and used it. I don't remember if it was used on the vent or drain at the time, but kept using the method of gas pipe tape. That Merc 115 2 stroke was rock solid, gutless above 4k altitude but damn, it was all was good when I changed the oil in the lower unit at the end of season. Thanks for the content. There are many in to cars/trucks and then there are us into boats and the outboards.

@marklaw2845 5 месяцев назад

Great video!!

@K_M_M_G 5 месяцев назад

I’d love to have that 2-stroke 90 Yamaha

@user-rd8tu5jk3b 5 месяцев назад

What a great one! Thanks! 👍

@1celtickiwi 5 месяцев назад

this is a great vid. cheers mate

@bengilluyando9489 5 месяцев назад

Thank you so much for these videos

@BornAgainBoating 4 месяца назад

You are welcome!

@p1mm3 Месяц назад

Bought a brand new motor on auction from a company for 2 weeks ago. Havent even been out on the lake yet but when its tilted theres a oil leakage from 2 small holes located in front of the shift shaft. :( I cant determine if its gearhouse oil or not because it feels more lubricant and thinner but at the same time it does not smell like motoroil.. Could it be gearhouse oil anyways? I filled oil from the level plug because there was already a bit of oil in it but not so much..

@motodiver6720 5 месяцев назад

❤

@nwrx247 Месяц назад

With muffs on,engine running is the lower end unit supposed to get warm like hot .would that be normal

@krisramos7453 5 месяцев назад

Why don't motors have some sort of sheer pins to protect all the shafts and gears if you smack something? I know my old boat had an aluminum prop which from experience I can tell you it bends before any damage happens to the shaft. But the stronger stainless props I'm not sure.

@BornAgainBoating 5 месяцев назад

Nope, not really any pins or anything that can be for protection or else it weakens and creates failure points in the engine. But the trim units have bypass valves that are supposed to allow the engine to pop up out of the water when you hit something, but it takes a good hit for that to happen. There are some Prop Hub designs that do something similar, but there are a lot of solid hubs as well for performance, and no, stainless is not going to give much lol with a solid hun and stainless prop, the lower unit is what is going to give. That's the back and forth discussion, it depends on how you use your boat and what you are looking for, both have their benefits.

@bennyramirez3942 2 месяца назад

Got a lower unit that bad what is the same as a nissan lower unit

@lewisbenjamin5298 3 месяца назад

I cannot find a 3/8 pressure tester anywhere.

@markgrand3346 8 дней назад

Is that a OMC stern drive? Hiw did you drop that part? I’m looking to replace water pump impeller.

@BornAgainBoating 7 дней назад

No, it's an outboard lower, OMC stern drives are different because they have an upper and a lower, but the stern drive lower has basically the same types of seals

@lliamnapoleon5167 5 месяцев назад

Nice video.

@gregfeldman6818 5 месяцев назад

Best I’ve seen

@mikewehner2858 3 месяца назад

How do you get that bearing carrier out ? I don't see any screws etc to loosin it. 2007 150hp Yamaha

@BornAgainBoating 3 месяца назад

Hey! Rose here, supporting Aaron with comments. Thank you for your comment! I've saved it for a detailed response/illustration in a future upload. Be sure to tune in so you don't miss it!

@whoabigthymer 5 месяцев назад

Haven't seen Donny in awhile. Is he still a part of the team?

@Gregg0112 5 месяцев назад

Do the lower units have vents? I couldn’t see one on my f50 lower unit.

@BornAgainBoating 4 месяца назад

Idk what you mean by vent? Make a new comment so it goes to the top of the list ;)

@HahaVideos-xj7yt 5 месяцев назад

An aligator at 60mph will cause a leak, a reef, a chain, and a rock. Also, if you don't change the oil, or if your shift cable is adjusted wrong, and your gears come out of the side of the lower unit, will cause water intrussion

@gregfeldman6818 5 месяцев назад

Try to keep the gears inside the case, if possible.

@iknowgood2403 5 месяцев назад

Nice

@libingliang7967 5 месяцев назад

One question: Do I need to drain the lube before the pressure test?

@PrefersAnonymity 2 месяца назад

@davidd8435 5 месяцев назад

I am going to makes these videos for a boat maintenance library there are a lot of information in these videos. Are you working on your boat or a customer's boat?

@gregfeldman6818 5 месяцев назад

Don’t Poach the Man’s Work

@robertjackson7590 5 месяцев назад

Spring side should go to the oil, that's the direction I installed them. Great video as always.

@antho7475 5 месяцев назад

That's not correct,They are installed that way to allow pressure out when you run for a long time and the oil gets hot and expands, sort of like a breather in your cars differential or transmission. Also when a hot lower unit cools at the ramp or trolling after a long top rpm run back from Bimini , The oil contracts and water can be drawn into the lower unit through the prop seals . That is considered " normal"

@robertjackson7590 5 месяцев назад

@@antho7475 I had seen people find low oil levels and next to no oil in Yamaha LU's. I did when I bought mine used. I understand what you're saying but I've had no problems and correct me if all the LU's from all the companies in the past worked fine with the inner seal lip facing the oil? As long as it has room to expand when it warms up it can't hydraulic the seals out. The hot oil doesn't expand more than 1/2 to 3/4inch from the top screw if that much. Shouldn't blow the seal from that. The inner seal spring faces the oil, the outer faces the water. That's what I did. I don't put a lot of hours on mine I admit. PS even with the pad at times. I do appreciate the explanation on their intent. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE--Pa8_Jkk1wc.html

@antho7475 5 месяцев назад

@@robertjackson7590 Thank you . that makes sense also l think l will try that next time . Who knows maybe Yamaha planed it that way in order to sell more LU. 😀😀

@robertjackson7590 5 месяцев назад

@@antho7475 Run a good syn gear oil like Amsoil and if you run 24-25 pitch or more bypass the Neutral safety and start it in gear. The LU will last years longer.