bravo transom assy question

[Thumbtack]

bravo 1, using the black service manual number 28 which has the right drive. not sure the year or numbers but i don't think that that would make a difference with this question.

The drive turns on two pins that are located on the transom assy, one upper and one lower. The lower one is real loose and probably because of the bushings. I tried to get the pin out but am having trouble, the first step is to remove the cotter pin but it is sheered on both sides and can't be pulled out. I drilled a hole on each side of the wings (not sure the correct term but they are on either side of the drive and rubbing marks can usually be seen where they are when the drive is moved.) So i drilled those holes to try and punch the cotter pin out but i think instead the pin mushroomed and just got worse. I then tried to drill the cotter pin out but quickly changed my mind since i can easily go through the aluminum if the drill isn't perfectly straight.

My next guess on what to do would be to cut the swivel pin in two spots (there are two spots where i think i can get a blade into) and drill up past and through the cotter pin then punch the swivel pin out the rest of the way. I figured i would write here to see if anyone else might have any better ideas. Also this idea will only work if that swivel pin has no threads but i don't think it does, it doesn't show any in the manual at least. This will be a difficult thing to do so if anyone has any ideas please let me know.
thanks

 

[Bondo]

Re: bravo transom assy question

Ayuh,.....

Have you tried any Heat,..??..??
Penetrating Oil,..??..??

Do you have the Bellhousing Off,+ out of your way,..??...

Btw,...... It Shouldn't be Threaded.........
Just pushed In,+ Pinned.......

 

[Thumbtack]

Re: bravo transom assy question

i did try with penetrating oil and with heat but still no good. Just those "wings" were in the way of getting a clear shot at that cotter pin so i drilled the holes in them like i said and they weren't a problem anymore. I guess i will have to try to drill from the bottom till i get passed that cotter pin (luckily it not that far) then punch the swivel pin up the rest of the way to get it out.

 

[Thumbtack]

Re: bravo transom assy question

so here is what happened just incase anyone was curious.
we drilled up through that swivel pin which is not stainless to our surprise and we drilled through the cotter pin on both sides. I then cut that pin in one spot and we were able to remove a large portion of it. a small portion stayed behind and when trying to remove that we broke the lower part of the gimbal housing where the cotter pin holes are located. I know this sounds crazy but i'm just going to marine text it, i've used marine text before and so far haven't had any problems (famous last words). We did remove the bell housing and one of the hinge pins was just spinning so we had to saw that off, that was fun it being stainless and all. But we got it all out and the threads are ok. Next step, since the lower porting of the gimbal housing came apart i think i can get the bushing up there without having to take anything else out then marine text the thing back together and put the pin back in........

 

[Thumbtack]

Re: bravo transom assy question

ok i'm doing pretty good with this, i got the gimbal ring off, upper and lower pins are both out.
In the diagram they show an oil seal in the upper part of the gimbal housing, this oil seal is NLA. Is this oil seal at all necessary, i don't see any point in having it there. Can i put it together without that seal?
Thanks in advance

 

[Don S]

Re: bravo transom assy question

What is the Year or Serial Number of your drive or transom shield?
Those seals are still available and you do need it. Where were you checking?

 

[Thumbtack]

Re: bravo transom assy question

The part number i have for the seal is 26-41607 1. I'm sorry i don't know the exact year and model number but it is a Bravo I. I'm using service manual #28 if that helps and so far it has been exact on what to do, where things go, and where things are. I've got a copy of the merc electronic parts catalog where it is telling me the seal is no longer available. I guess without the seal water can get back up into the boat and that is why it is there, it confused me when it said it was a oil seal.
thanks again

 

[Thumbtack]

Re: bravo transom assy question

i ordered that seal from merc and they didn't say anything so i guess i'm ok. thanks

 

[Bt Doctur]

Re: bravo transom assy question

Did you remove the upper pin by cutting it?

 

[Don S]

Re: bravo transom assy question

That same seal was/IS used on both the old and new Bravo and Alpha transom shields (aka Gimbal Housings) While merc shows them as NLA, the also show as have a LOT of them.
My guess, and I'm still trying to find out, is that this part # had a problem with changing to Mercs new numbering system. The new system drops the class number (27 in your case)
Not working for a Merc dealer makes it a lot harder to get all the updated info.