1990 johnson bottom failure, chicken, or egg?

[karlow1]

I have split the case. What I found is the the cap screws on the connecting rod on the lower cylinder have backed out. There is a 3/8" gap between the rod, & the rod cap. The bearing has failed, and the cap screw were digging into the case. My question is, did a bearing failure cause the scress to come out, or did loose cap screws cause the bearing failure? If the original failure was the bearing, why did it fail. I have pic, but they are too large to post.

Karl

 

[wilde1j]

Re: 1990 johnson bottom failure, chicken, or egg?

If the rod cap screws backed out, they most likely were not properly torqued. If seen plently of rod failures, but seldom where the cap screws have come loose.

 

[karlow1]

Re: 1990 johnson bottom failure, chicken, or egg?

I have another question. When I pulled her apart, it looked like no one had ever been in there with the possible exception of the power head mounting hardware. Thei hardware seems to be cad plated. Is this OEM? I would expect stainless hardware on the weather side of the power head.

Karl

 

[wilde1j]

Re: 1990 johnson bottom failure, chicken, or egg?

Internal fasteners are steel, most external are SS, but I've run into a few older motors with some CS fasteners holding the PH to the adapter.