BP 2J Rebuild

[itsme_Bernie]

I look forward to seeing this thing together!



Bernie

 

[RandyM]

Great Job! I love seeing these machines getting made new again. Thank you for posting.

 

[sd624]

So the next step was the column. My plan was to degrees it, sand it down, fill in and the chips, and repaint. The last thing I wanted to do was strip it down to a bare casting. Unfortunately that didn’t work out. The problem was I could not get it to stop weeping oil. I would sit it in the sun for hours and just keep wiping it down over and over again. Finally it stops weeping oil and I painted it. It looked great! Maybe the best painting I had ever done. A day or two later all the paint was bubbling and the weeping started all over again. At that point I accepted my fate and started stripping it with a needle scalar.

 

[sd624]

I don’t have any pictures of the major stripping of the column with the needle scalar because I didn’t want my son breathing any of the dust that was coming off.
After the needle scalar I used and wire brush to finish cleaning up the casting. After it was clean I let it sit in the sun for several hours and get nice and warm bring any oil to the surface. Wiped it down with thinner and that was it no more oil problems.

 

[sd624]

I didn’t have too many deep casting flaws. I have seen some almost big enough you could fit your fist in them. Makes you wonder how bad it would have to be to get rejected. Anyway I filled all the deep flaws filler then covered the whole thing with Bondo.

 

[sd624]

Next step was sanding and spot puddy. I have to admit it was a lot easier then I thought it was going to be and if I ever do another one I wouldn't think twice about stripping it down to a bare casting.

 

[sd624]

Next step 2K high build primer to fill in any sanding marks and any spots missed with the spot puddy.

[video=youtube_share;kRIPM0Lhx4A]http://youtu.be/kRIPM0Lhx4A[/video]

 

[sd624]

Time for paint

 

[sd624]

While I was waiting for the paint to harden I started on the last part the need some work done.



The pump had a bad o ring and other than being really dirty the rest of it was in good shape. I replace the filter and reservoir.

 

[sd624]

So with everything painted, cleaned, rebuilt, or whatever and I started to assemble everything. Dropped the knee on the column no problem. Then the saddle on the knee and the problems started. If I adjusted the gib with the saddle in the middle of the knee I couldn't move the saddle to the ends and if I adjusted it at the end of the travel it was to loose in the center of the knee. It was hard for me to get my head around what was going on since before I tore it apart I had full travel with no slop. So I talked to a couple of machine re-builders to confirm my fears. cleaning 40 years of harden grease, oil, and metal chips can give you some problems. So here I am with freshly painted parts that have to be sent to a grinder and then to a shop that can fit, scrape, and flake them. I figure by the time I get them back I'll be redoing everything. The grinder tells me "no problem I can do it without hurting the paint. Sure enough no damage one down one to go. So I call the machine re-builder to do the rest of the work and mention to him that the parts were just painted and if he could do the work without to much damage. Hes says not a problem that because he has guys train in certain areas that to keep production moving that some of his machines are painted before they get to the ways so his guy is very careful and he guaranteed no damage. I couldn't believe it!!! So I loaded up the column, knee, saddle, and table and off they went.

Here are some before and after pics.