The Coolidge Chronicles #21: Part 5 - 1952 Delta Multiplex 40-B 12"-14" Radial Arm Saw Rebuild

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Blog entry by darthford posted 01-19-2014 11:18 PM 2655 reads 0 times favorited 0 comments Add to Favorites Watch
« Part 20: Part 4 - 1952 Delta Multiplex 40-B 12"-14" Radial Arm Saw Rebuild Part 21 of The Coolidge Chronicles series Part 22: Part 6 - 1952 Delta Multiplex 40-B 12"-14" Radial Arm Saw Rebuild »

Heck yeah its time to put this beast back together.

Here’s the crank assembly for raising/lowering the saw on the column. I pressed new roller bearings into that cast iron piece (I can’t believe how often I’m using that cheap Harbor Freight hydraulic press I griped about buying thinking I’d only use it once) and purchased new made in USA thrust bearings as well. I painted most of that disgusting crank shaft grey, I swear that thing was half rusted when they gooped primer on it at the factory, I threw it on my lathe and cleaned it up a bit.

Here it is assembled and ready to install.

Installed and greased. I elected not to paint the remaining bare metal of the crank shaft just in case this ever needs to be removed again, its a tight fight and I would not want to beat it out of there like I had to the first time. I hit the bare metal with some Boeshield and called it good.

Here it is from the top side bolted now to the stand.

Its so nice and shiny clean

Goooooooop I packed it in grease. This ACME screw is not accessible once the saw is assembled so there’s no way to routinely lubricate this thing so I packed it with about 50 years worth of grease.

Here’s the upper half of the column and the ACEM nut.

I packed the nut with grease also.

You may have noticed by now I’m using new stainless bolts, nuts, and screws. I would have had to replace some of the beat up original hardware and de-rust clean/paint the rest I said the heck with it and just purchased new stainless. Yeah it got expensive I’m not sure I’d do it again when I can get grade 8 for $4 a pound.

I purchased new hex socket set screws and jam nuts for the column replacing the original giant flat scew driver type set screws and beat up jam nuts. Anti-seize love that stuff, also gave these a coat of Boeshield. Here in the pacific northwest of Washington state we get a lot of rain and stuff likes to rust that’s why. ;-)

Here’s a shot from the back of the column installed. For the upper and lower column I used way oil I have on hand for my metal lathe, its heavy like 68 weight but designed not to get sticky.

Here it is from the front. I only have the set scews snug but still the column moves with no effort, I don’t even need the crank handle you can just grab the shaft and spin it. I think its well lubed lol.

That’s all for now, off camera I cut the 4 precision ground 1/4 inch rods to size and have installed two of them already but its time to take a break and head over to Famous Daves BBQ for some sirloin tri-tips, stay tuned I’ll get back to it after lunch!

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