1st time lower unit removal, what is this part and where does it go?

[Karla45]

Re: 1st time lower unit removal, what is this part and where does it go?

well i may have messed up the driveshaft seal but not sure. When I went to hammer into the bore it tore some of the rubber off of the end of the seal around edges you can see the metal, i took a picture. I am not sure if this part of the seal actually makes contact with anything so I was thinking it might be okay but not sure. My gut feeling is that I am going to have to buy a new one. Please advise.

 

[jason32038]

Re: 1st time lower unit removal, what is this part and where does it go?

You're fine id does not contact anything but I would advise you to seal the missing rubber with gasket maker to prevent water leakage and also grease or use pb blaster on the inner seal before assembly.

 

[jason32038]

Re: 1st time lower unit removal, what is this part and where does it go?

Also permatex 2 is a slow drying sealer not an adhesive. I used this on my gear housing cover in addition with the seals and it worked great. The thing is it takes a while to get tacky and dry. It cures like a play-doh mixed with glue which is weird because it stays kind of soft.

 

[Karla45]

Re: 1st time lower unit removal, what is this part and where does it go?

Well I could not find my permatex 2 so I used permatex red rtv silicone that is why you see red around the edges in the picture. Well I just had a realization. That seal is not all the way down in the bore, it is hard to tell in the picture but it is not. What i was using was not working out so well and I did not have anything else to use. I was planning on going tomorrow to hopefully find a socket big enough to use. Which means that the permatex will already be dried. I know if I remove the seal to redo the sealant that it will most likely bend it. That one does not come out easy at all. Looks like I will be ordering a new seal

 

[jerryjerry05]

Re: 1st time lower unit removal, what is this part and where does it go?

Sometimes using the old seal to push in the new works.Or taking it to a garage or someone with a press.

 

[Karla45]

Re: 1st time lower unit removal, what is this part and where does it go?

okay thanks

 

[Stachi]

Re: 1st time lower unit removal, what is this part and where does it go?

Sometimes it is advantageous to seat the seal at a different depth if you can. Examine the part the seal actually makes contact with..you may find a groove where the old seal rode. The new seal will fit into the groove and leak at the seal if you set it at the same depth.

 

[Karla45]

Re: 1st time lower unit removal, what is this part and where does it go?

I will check it out. First I need to get the rtv off in order to see. FYI the proper socket size to use to get seal back in is 28mm. I went to autozone and was just going to borrow a seal kit but the ones they had did not fit this seal they were either to big or a little to small. The hardest part now is getting all of the red rtv off that i put in the bore and on the seal. Carb cleaner did not seem to work. I think I need to soak it overnight. I have some mineral spirits and was thinking of using this, would this be okay? I will be picking up the new seal tomorrow.

 

[jerryjerry05]

Re: 1st time lower unit removal, what is this part and where does it go?

The rubber in the seal might melt in ANY cleaner.Try to scrape it off with your fingernails. Maybe a scotchbright or a hard toothbrush???
A little bit left won't hurt.
Stachi brought up a good point.Run your finger over the spot where it was and see if there is ANY indent on the shaft.J

 

[Karla45]

Re: 1st time lower unit removal, what is this part and where does it go?

Well I know there is a little bit of a groove on the driveshaft where both of the seals were. One of my posts shows this but they do not seem to be deep at all. But thinking about this makes since that water could get through there even if not a significant groove. I thought he was talking about a groove inside the bore where the seal seats. The seal I took off was down in the bore pretty deep and not flush with the top of the bore. When I put the new one in that I had to remove it was flush with top edge of bore and that was as far as I could go with what I was using. I really hope that when I get the new one I do not do the same thing.

I would not be soaking the whole housing just inside of the bore. The way I am able to soak it is with the lid of a carb can. The lid fits snugly over the bore and then I pour the liquid in the hole where driveshaft goes and it fills up. This way the cleaner is not getting on the bellows(rubber boot) at the shift shaft. A llittle hard to explain so here is a picture.

 

[jerryjerry05]

Re: 1st time lower unit removal, what is this part and where does it go?

Soaking metal,no problem.Just make sure that if you get any cleaners on any rubber/plastic, you wash it off.WD won't hurt rubber/plastic.J

 

[Stachi]

Re: 1st time lower unit removal, what is this part and where does it go?

Ok , if you hold the carb cleaner can top up to a light , you will discover that it has a very small hole in it. It will not hold ANY liquid for very long. It is a shame , as they are the perfect sized container for so many things...if it weren't for the tiny hole in them...lol. I think you will find in the long run , that it is far easier and expeditious to just scrape out the rtv... an edge of a flat blade small screwdriver works very well.. squirt some Windex in there and that will help to. As for seating the new seals...if you can seat them SQUARE to the bore , but not fully seated in the bore , high enough to be away from the grooves, and out of the way of any other parts,you will have done yourself a favor...place a couple of small washers (same thickness...look closly at them)at the bottom of the seal bore and drive the new seal down to the washers then remove the washers from the underside. I have always used Locktite Threadlocker RED to seal the outer edge of any seal casing when I install. Place a one or two drops on the casing of the seal , and wipe them around the circumfrence. You don't need a lot . Good luck with your project !

Well I know there is a little bit of a groove on the driveshaft where both of the seals were. One of my posts shows this but they do not seem to be deep at all. But thinking about this makes since that water could get through there even if not a significant groove. I thought he was talking about a groove inside the bore where the seal seats. The seal I took off was down in the bore pretty deep and not flush with the top of the bore. When I put the new one in that I had to remove it was flush with top edge of bore and that was as far as I could go with what I was using. I really hope that when I get the new one I do not do the same thing.

I would not be soaking the whole housing just inside of the bore. The way I am able to soak it is with the lid of a carb can. The lid fits snugly over the bore and then I pour the liquid in the hole where driveshaft goes and it fills up. This way the cleaner is not getting on the bellows(rubber boot) at the shift shaft. A llittle hard to explain so here is a picture.

View attachment 113622

 

[Karla45]

Re: 1st time lower unit removal, what is this part and where does it go?

The cap on the carb cleaner on mine does not have a hole, it is evinrude brand carb & choke cleaner. I was worried that if I use the threadlocker that I would not be able to get the seal lose if I ever needed to change it again. I read that you had to use very high heat to get the threadlocker to break loose. Is this the case? Is permatex high strength red threadlocker equivalent to Loctite 271, cannot find the loctite at any of the local auto stores or hardware stores they all carry permatex products but not loctitie? I like your idea about the washers.


Another 70 posts and I should be done. Lol

 

[jerryjerry05]

Re: 1st time lower unit removal, what is this part and where does it go?

Your doing it the right way. Lots of threads start with I tried to do this and ended up breaking/stripping/loosing etc.
Remember there are NO stupid questions.J

 

[Stachi]

Re: 1st time lower unit removal, what is this part and where does it go?

Well , you got the old one out...the manufacturer used it and recommends using it at replacement.......if it was hard to remove.... what's that tell ya.. it probably was leaking at the seal to driveshaft groove...

The cap on the carb cleaner on mine does not have a hole, it is evinrude brand carb & choke cleaner. I was worried that if I use the threadlocker that I would not be able to get the seal lose if I ever needed to change it again. I read that you had to use very high heat to get the threadlocker to break loose. Is this the case? Is permatex high strength red threadlocker equivalent to Loctite 271, cannot find the loctite at any of the local auto stores or hardware stores they all carry permatex products but not loctitie? I like your idea about the washers.


Another 70 posts and I should be done. Lol

 

[Karla45]

Re: 1st time lower unit removal, what is this part and where does it go?

Not trying to argue but I have not had this boat very long and I have no idea if prior to this the seals may have been replaced. Since locitite 271 is red I would think that I would have been able to see it on the side of the seal or on side of the bore where it was. There was no red anywhere. There was alot of hard black stuff all over the inside of the bore and I thought it was probably rtv that someone else had used when installing the seals. So is permatex high strength thread locker a good substitute? Most likely you are right about the grove causing the leak and you have a good point.

 

[Karla45]

Re: 1st time lower unit removal, what is this part and where does it go?

I got the seals in the gear housing cover I am letting everything dry overnight. The mechanic at the boat shop told me that if I put the seals in the freezer for about 30 minutes to an hour it would make the seals go in easier. Thanks for for your help.

 

[jerryjerry05]

Re: 1st time lower unit removal, what is this part and where does it go?

The Red Loctite is for the threads.The permatex is good for the sealing the seals.
When you reassemble.Clean out the threads and the bolts.When you put them back together use grease on the threads or you will have trouble getting them apart again.The Locktite should be used on the connecting rods in the motor.
I don't use it anywhere else.
You read my starter post? That's an easy thing to look into.Might save you a day on the water.J

 

[Karla45]

Re: 1st time lower unit removal, what is this part and where does it go?

I was not able to find your starter post. What is the title of the post?

 

[jerryjerry05]

Re: 1st time lower unit removal, what is this part and where does it go?

http://forums.iboats.com/showthread.php?t=515621 try this.
It was moved to page 2