G23 Impeller replacement video?

[Team230]

YouTube let me down today. I went looking for a video on how to change my impeller on my 2018 G23 with the 450 motor but no luck.

Everyone says it is easy but has anyone put together a video?

Thanks!


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[NautiqueJeff]

There is a pretty good write-up here:

http://www.planetnautique.com/vb5/fo...-pcm-excalibur

Different engine, but same idea.

Find the raw water pump, remove the belt, remove the three bolts, replace impeller and gasket, reinstall the bolts, and reinstall the belt.

[GMLIII]

YouTube let me down today. I went looking for a video on how to change my impeller on my 2018 G23 with the 450 motor but no luck.

Everyone says it is easy but has anyone put together a video?

Thanks!


Sent from my iPhone using PLT Nautique

Everyone has a different opinion but for me it is well worth $150 to get my dealer to change it . I have the same engine as you

[Infinity]

It is an easy changeout if you have a couple basic tools. One trick for getting new impeller back into housing is using dawn dish soap, not only helps it slip in nicely, but also lubricates it till it gets water once you start engine. After replacing, you want to either use a hose and start in driveway and let it get to temp to be sure no issues (while checking to make sure not water leaks)....or do the same while tied to dock if you dont have ability to start in the water.
There are a lot of utube videos, but not many with the new engines. I thought about making one but have not had the time yet. If you want to do yourself, many of the videos show the process and its basically the same as your engine....just likely in different place on engine and parts look a little different but the basics are:

*Use belt tensioner to remove the belt. (15mm socket)
*Remove the 3 bolts that hold on the water pump (they are the 10mm bolts that you access thru the holes on the pulley and are not the bolts that you can see on the outside of the water pump belt pulley). The bolts have small washers on them, so they do not fall out when you loosen. One you remove those 3 bolts, you can wiggle out the outer assembly and that pulls out the shaft with the impeller on it.
*NOTE* which direction the vanes on impeller are bent when removing since you will turn vanes same direction when re-installing new one.

*Slide old impeller off shaft and make sure its not missing any vanes or pieces. Slip on the new impeller and liberally put dawn dish soap on all the vanes to lubricate it well (there are other things you can use, but best to not use something like WD40.... *NOTE* Check new impeller to be sure the hub is secured well to impeller since there have been reports of some impellers not working cause the hub "spins" off the actual impeller, its a manufacture defect but not something that is prevalent, just something to check.
*REPLACE your o-ring (I put soap or a couple small dabs of grease to hold impeller in place while re-installing).

*Compress yourself into engine compartment and remembering which direction the vanes where turned when you removed, while turning the assembly by hand to turn impeller vanes as you insert it back into the housing. Also make sure your o-ring stays in place.
*Gently slide it back into place and tighten the 3 bolts back into place.....tightening each one a little then the next (in a star pattern like installing lugs on tire).

*When done....re-install the belt. Then double check everything, put water to the boat and start it up. Make sure you get water coming out of the exhaust within 20-30 seconds and use a flashlight to be sure that impeller housing is not leaking. If those are good.....then let boat get to operating temp and hold so you know all is good. I always check it a few times and after that also check the tightnesso f the 3 bolts (you don't want super tight, just firm with no leaks.

Good luck!

[Team230]

Great feedback! Thank you!
Maybe I'll attempt a video as I do it.


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[Team230]

I pulled it all apart this evening. Great instructions and it was very easy. I've not reinstalled because the new one is not here yet but it should be easy enough.

Question. Any tricks to making sure the belt is tight enough and not too tight?


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[charlesml3]

I pulled it all apart this evening. Great instructions and it was very easy. I've not reinstalled because the new one is not here yet but it should be easy enough.

Question. Any tricks to making sure the belt is tight enough and not too tight?


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The belt tensioner is spring loaded. It will always apply the right amount of pressure to the belt to make sure it's right.

And I'm going to have to nit-pick Infinity just a bit here. There's no need to "*NOTE* which direction the vanes on impeller are bent when removing since you will turn vanes same direction when re-installing new one." You can certainly do that, but it doesn't matter. As soon as the pump turns, those vanes are going to go where they need to go.

-Charles

[Infinity]

The belt tensioner is spring loaded. It will always apply the right amount of pressure to the belt to make sure it's right.

And I'm going to have to nit-pick Infinity just a bit here. There's no need to "*NOTE* which direction the vanes on impeller are bent when removing since you will turn vanes same direction when re-installing new one." You can certainly do that, but it doesn't matter. As soon as the pump turns, those vanes are going to go where they need to go.

-Charles

What you say is true Charles. I said that simply cause the vanes are compressed pretty tightly in one area of the housing and I figure if the vanes are inserted in the correct direction to begin with, less chance of any damage since the initial "spin" wont have water in the system to help lubricate it and its possible for a vane to get damage if its flipped over suddenly where tightly compressed. That is also why I liberally use dish soap before inserting tho and that should prevent an initial issue.
But you are right that regardless the vanes will go the direction they are supposed too.

Good job Team230!

[charlesml3]

I use dish soap too. It's makes this job much easier. Impellers are pretty easy to replace. I put a new one in my boat every spring, regardless of hours. I just don't want to take a chance on having a weekend ruined because I didn't replace it.

-Charles

[DocPhil]

Everyone has a different opinion but for me it is well worth $150 to get my dealer to change it . I have the same engine as you

Is that parts and labor? For me, it is hard to stomach paying someone 100 bucks to perform a 10 min job. Plus factor in time taking it to the dealership too. Unless you already have it there or they come to you.

It's also a good thing to know how to do in case you are having overheating issues. This is a common item to fail in these boats and it is worth it to know how to troubleshoot certain issues.

[GMLIII]

Is that parts and labor? For me, it is hard to stomach paying someone 100 bucks to perform a 10 min job. Plus factor in time taking it to the dealership too. Unless you already have it there or they come to you.

It's also a good thing to know how to do in case you are having overheating issues. This is a common item to fail in these boats and it is worth it to know how to troubleshoot certain issues.

As stated above everyone has their own opinions. $150 is for parts and labor . As you stated if you already have the boat there which is the case for me then it makes sense. I take my boat to the dealer each spring prior to the season for warranty work and impeller change .I changed my impeller on my GT 40 engine in my Sport Nautique for 16 years and you are correct it was a piece of cake to change but there is no way I would change it in my H6. Well worth $150 for me not to have to perform this task. Might be a 10 minute task for some on changing the impeller out on a H6 engine but not me. My time is more valuable

[charlesml3]

It's not a "10 minute job" on these V-drive boats. The pump is in the back and it takes longer. I don't think I could do it in 10 minutes on my old Air Nautique GT-40 and it was very, very easy to get at it.

[DocPhil]

It's not a "10 minute job" on these V-drive boats. The pump is in the back and it takes longer. I don't think I could do it in 10 minutes on my old Air Nautique GT-40 and it was very, very easy to get at it.

Ok. 15 min maybe? I've changed an impeller on my 2016 G23 and I promise it didn't take me more than 15 minutes.

I am short and can fit in small compartments though so maybe that helps?

[charlesml3]

Ok. 15 min maybe? I've changed an impeller on my 2016 G23 and I promise it didn't take me more than 15 minutes.

I am short and can fit in small compartments though so maybe that helps?

Well it depends on how you measure the start/stop time. Are you including:

- Emptying all the stuff out of the lockers so you can get to where you need to be.

- Getting all the tools you need down to the boat.

- Going back to get the one tool you forgot you needed.

And then after you actually get done with the mechanical work:

- Clean up

- Putting all the tools away.

- Putting all the stuff back in the lockers.

I consider ALL of that part of the job. Yes, once I'm actually back there I can probably remove the belt and swap the impeller in 15 minutes. But I don't think that's an accurate measurement of the time it actually takes.

[GMLIII]

Still worth $150 for me to get someone else to change it . Best $150 I spend every year on my H6 engine. Thank you Jesus