Outboard gear box pressure tester DIY project. Test your Evinrude, Johnson, Mercury, Yamaha and more
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- Опубліковано 28 лис 2020
- In this episode I show you an easy DIY project to be able to pressure test your own gear box to verify your seals are in good shape before you refill it with gear oil.
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One suggestion i will make only cause I've seen it happen many times on 2 stroke engines is to exercise the shafts while under pressure, setting static may pass test but when under motion could fail test, I've found many leaky seals by exercising the shaft.
Good call. Thank you
Mine still passes the pressure test even turning the prop and shifting , the vacuum holds to , until you turn the drive shaft and shift it ...I like to spay soapy water on it , but that don't work with vacuum, and I gotta have both hands to turn it
I saw a Prius ad good job youtube. I'm a 2 stroke guy. Awesome channel.
Thank you! Thanks for watching and commenting. Yeah since the political race is over they have to add something LOL
Enjoy your channel. Thanks for the nice tip.
If you already have an air compressor with an external regulator on it you could use that and save the price of a new regulator and just build the adaptor(s).
John
Yeah but I didn't want to mess with the on board regulator every time I test a gear box. Thanks for watching and the comment
Another good video. Thank you Michael. A name brand lower unit tester is the range of $150-$170 bucks. Dangar from Dangar Marine videos uses a brake fluid pump/bleeder. Kinda neat idea as well.
I did see Danger's set up during my research. Thank you for watching
Nice video and design
Thank you so much. Thank you for watching and the comment.
Always good information. I’m going to make this tool.
Have fun! Thank you for watching. I see that you have changed your picture. I like it.
@@Michaelsbackyardmarina my granddaughter has some artistic talent so I put her to work
Thanks man , you're awesome dude !
No problem! thank you for watching and commenting
Nice tip , now i have a new project for today LOL. keep at it and have fun.
You can do it! You the man Badger Bob. Thank you for watching and the 1968 Fastwin parts. video coming soon.
Good project!! When draining old oil I have put some fresh in the top hole just to flush out any solids. The old stuff comes out first then the fresh.
That's a good idea!
When I get an old outboard that I don't know of the maintenance record, I drain the lower unit, fill it back with kerosene, put it in gear and crank it over good with the spark plugs removed (lot easier without compression and it won't start on you). You'd be surprised of the gunk and until then stuck metal shavings that will drain out afterwards.
Good video, interesting tool.
Hey thanks, Huge shout out to Shots Life!!!!
Another good homemade tool video. Looking forward to a video of you delving into that little old Mercury Kiekhaefer that is sitting there on your rack.
Which one we looking at. I have several. Pick a hp and maybe it’s next
@@Michaelsbackyardmarina The green one with chrome fins/wings on the cowl. I would imagine that it is around 3 to 7 HP with my best guess at 5.5. It is visible from 13:00 to 17:00 with the man door of your shop behind it.
GREAT idea!!!
Thank you and thanks for watching
Nice video. I always like how creative you get using your engineering skills. I believe a vacuum test is necessary though because I’ve seen lower units pass a pressure test but still fail under vacuum. This means water intrusion. Seals need to work in both situations not just under positive pressure.
NAPA sells a Mity-vac - Pressure/Vacuum tester for $62.39 online PN: 7001762. You just need to use the adapters from an oil pump kit.
Good points and suggestions. Thank you for the valuable information
Thanks for this video. I'm going to make mine.
Have fun!
When I was 12 or 13 years old my dad and I found a 9.9 Johnson at a local lake. A pip broke in the dam so they let out almot 1/2 the water.. I seen the top sticking out of the mud my dad told me its just the top. He went to grab it and pull a whole 9.9 Johnson out of the mud God knows how long it what in there.. we went home pulled the plug cleand a few eletricla connections fucker started right up 4 pull.. I still use it to this day on the back of the 12 foot boat my grand father gave to me afere I found that little 9.9. Im almost 30 now..
Wow, that's a fantastic story. Testament to the old Johnson for sure.
@@Michaelsbackyardmarina Thank you for replying.. It brought me to tears writing that I lost my grand father 2 years ago and haven't been able to bring my self to the her out.. This inspired me to get that old girl bak on the lake.. I cant wate till summer I already got my 9.9 in the garage on its Johnson stand.. pulling it apart just to replace all the seals..
I’ve had a little water and put some sealer in there with oil and next draining no water. Doesn’t always work but it’s something you can try, before taking all apart.
Nice Tip, thanks for watching and commenting.
Great idea.
Thanks! and thank you for watching and commenting
Thank you very good
Thanks for the price listing
Any time! You ask and I heard. Thank you for watching.
My thought is to make something out of one of the pumps for lower unit fluid so you have the adapter my only other thought is on a alpha one lower you have to seal up the oil port that goes to the upper unit somehow and it's pretty small
As always a great video. The DIY tool is terrific. I personally do that type of thing quite a bit. I don't quite understand why you used the rubber hose and the extra steps. Wouldn't be easier and simpler if you used a threaded brass fitting and connect it directly to another air-chuck and forgo the hose, clamps and extra parts? Plus it would be a simple twist on and off a lubricated air-chuck to change out the different sized drain plugs and you wouldn't have to make extra hose connections. I can see the use of a hose as an extension for different applications where it may be harder to reach. . . Great channel! Keep it going! (LIKED)
All good points. Thank you for watching and commenting.
Smart!
Thank you
Works if you have the machining equipment.
Thanks Mike , very informative! I’m going to make me one! Also what kind of VOM do you recommend? And looking at buying a old Johnson 6 hs. 60 psi compression your thoughts Appreciated👍😬 . PS watch all your videos.
You lost me on the VOM. It will run on 60 psi but that is pretty low compression. I have had a couple 9.5 with 60-70 psi and they ran just fine.
Volt ohm meter , checking coils and electronic stuff.
Also 5 hp Johnson for sale guy said 60 psi dry compression thought maybe worn to far to repair ?? 50.00 was going to buy doesn’t run ! Comp. bothers me !?!?
Cool, any way to eliminate modifying the hex nut? Most guys don’t have a lathe.
a couple small diameter washers would work.
a mehcanic gawged my gear box carrier using incorrect tool to remove the prop shaft seal. since he ruined my gear box it leaks. I've been changing my fuild each trip. how long can I continue doing this?
nice tool you have there, I don't have shop air is a handheld pump good enough? thanks for advice
I will fix the two easy ones
Hi I have a question can you presser test leven the water pump on and put the lower end in surged water with the prop off can you see bubbles go round the water pump? . Is there a way to make this if you don't have a way to turn down the nut ?
I don’t see why not
What is the oil cap thread pitch diameter?
did this test and passed. But still get water intrusion. I heard that spinning the prop by hand while doing this test will give you a better result. Whats your thoughts on that?
I would agree, I have also heard of doing a vacuum test to see if it hold vacuum and I would guess that would let you know that water could get in if air can get in. Thanks for watching
@RMDCreations I did both vacuum and pressure test. Someone recommended spinning the prop shaft while doing the test. First I heard of it.
You should use only Five psi to test for leaky seals anything more can make a bad seal appear not to leak it will expand the lip too much
Great information, thanks for watching
I need new gear lube seals , test tank full of floating lube on top of water.😭
U need a vac test not pressure..
or both, thanks for watching