Augoose
Lieutenant Junior Grade
- Joined
- Mar 21, 2010
- Messages
- 1,220
I've got a question regarding the installation of this cover. Detailed in a separate thread, I unfortunately had to replace my upper gear case bearing cover. I ordered a new "used" one and I have a question about it before I install it- there seems to be imperfections on the mounting surface of the cover- I'll do my best to explain.....it almost looks like it was "re-decked" with a small dremel wheel but someone didn't do a very good job.
In the picture, the highest mating surface of the cover is referenced with the green line. The next step down, or the next step "in" if the cover is flipped upside down, is where the gasket sits and is referenced with the red line. The inner most rim is referenced with the blue line.
My question pertains to the highest mating surface where the green line in- on this replacement cover, this surface is not smooth, and if you run your finger along it you can feel some rises where some areas of the metal is slightly (.5mm to 1mm) higher than the surrounding surface. Are these imperfections going to be an issue? Based on the installation instructions there is supposed to be a gap, hence the need for shims- if I understand it right, since there is going to be a gap there anyway the slight imperfections on the surface shouldn't matter right?
Second question- on which surface do the shims sit- on the red where the gasket goes or are they further in on the blue area?
Last question, what are the tolerances for imperfections along the green and red surfaces? I included a closeup of the two most significant "gouges" just to the right of the red and green lines - again where the gasket will sit. Are these gouges something to be worried about? I dropped just shy of $200 on this cover and want to be sure it'll work.
As always, thanks everyone for the assistance!
In the picture, the highest mating surface of the cover is referenced with the green line. The next step down, or the next step "in" if the cover is flipped upside down, is where the gasket sits and is referenced with the red line. The inner most rim is referenced with the blue line.
My question pertains to the highest mating surface where the green line in- on this replacement cover, this surface is not smooth, and if you run your finger along it you can feel some rises where some areas of the metal is slightly (.5mm to 1mm) higher than the surrounding surface. Are these imperfections going to be an issue? Based on the installation instructions there is supposed to be a gap, hence the need for shims- if I understand it right, since there is going to be a gap there anyway the slight imperfections on the surface shouldn't matter right?
Second question- on which surface do the shims sit- on the red where the gasket goes or are they further in on the blue area?
Last question, what are the tolerances for imperfections along the green and red surfaces? I included a closeup of the two most significant "gouges" just to the right of the red and green lines - again where the gasket will sit. Are these gouges something to be worried about? I dropped just shy of $200 on this cover and want to be sure it'll work.
As always, thanks everyone for the assistance!
