lower unit repairs 50hp Mariner

[scruffy_fish]

Lower unit taking on water,fluid was milky when drained. I've removed to unit and want to attempt repairs myself. I have the manual and the want to do this. <br />Is there anything that I should know that is not in the manual, springs popping out or bearings falling out of the races, etc.? <br />Any tricks that I need to know that would make the job easier? <br />Thanks,

 

[Laddies]

Re: lower unit repairs 50hp Mariner

Not a big at should all be a good manual be sure to clean up the shafts and pre lube the seals

 

[Laddies]

Re: lower unit repairs 50hp Mariner

sorry it should say not a big deal it should,---- I need to look at these replies before I push the reply button---bob

 

[scruffy_fish]

Re: lower unit repairs 50hp Mariner

I finally have be able to get to the lower unit. Have taken out the large retainer and nut. <br />Followed the instruction manual and clamped the spline in a vise with wood holding the spindle secure. <br />I proceeded to beat the hell out of the lower unit housing, in line with the shaft, to get the bearing carrier to come loose.<br /> ( I beat the s*** out of it.)<br />I've not been successful in even getting the slightest bit of movement. There must be a better way, other than taking it to a dealer which I don't want to do as they are quite a distance away.<br />Any suggestions or tricks?

 

[scruffy_fish]

Re: lower unit repairs 50hp Mariner

Finally after several hours of beating the crap out of the lower unit I started to use my brain. Thought about the slide hammer, but TMD's comments made me shy away from using one. <br /> <br />The ultimate solution was wedegs! <br /> <br />I clamped the spline in a vise with wood cushioned jaws, put a nut plate against the vise jaws and a nut on the thread. This left some room between the vise and the low unit housing. I placed two wooden wedges an a peice of steel against the housing and skeg. I also heated the housing up with a hot air gun and began pounding on the wedges. <br />After some heavy pounding the bearing housing came loose, and no damage. <br /> <br />This is the same method I had to use to get the lower unit to break free of the main housing, last year to rebuilt the waterpump. Wooden wedges are great!