Photo Index - Delco Products Corp. - 5048301 single-phase capacitor-start

Machinery Photo Index

Manufactured/Badged by:
Delco Products Corp.
Dayton, OH

True Manufacturer:
Delco Products Corp., Dayton, OH

Machine Specifications
Machine Class:	Wood Working Machinery
Machine Type:	Motor
Machine Size:	1/3 HP, 1725 RPM
Submitted By:	Douglas Jones

Machine Specifications
Description/Model:	5048301 single-phase capacitor-start
Date of Manufacturer:	unknown, 1940's?
Serial Number:	none
Last Updated	1/20/2021 7:36:32 PM

Comments:

This motor came with my Sears-Dunlap 103.0207 table saw, purchased at a garage sale in the 1990s. It works well. When I got it, there was no cover over the electrical connections. The wire on one binding post was loose, and the resulting heat had cooked the phenolic board on which the binding posts are mounted. I moved that binding post to a spare hole in the phenolic board, then cut a sheet aluminum cover for the wiring.

The press-fit oil plugs are difficult to remove for oiling; I ended up drilling and tapping them so I could put a screw in each plug to pull it out. Once pulled, I determined that the felt in the oil reservoirs was good, filled them with oil, and used a soft hammer to re-seat the plugs. From now on, I'll use the screw holes in the oil plugs for oiling.

While building a new mount for the old Dunlap tilt-table saw this motor powered, I decided to give the motor a good cleaning and replace the burnt terminal board. I had a chunk of fiberglass-epoxy board the same thickness, so I clamped the burnt board to it and hacksawed around the outline, then used a bench grinder to grind right up to the burnt board. I drilled the holes using the old board (still clamped on) as a template and then used a needle file to make the binding-post holes square.

While I was at it, thoroughly cleaned the dust out of the motor, first with compressed air and then with goo-gone on the end bells. Once cleaned, I noted that there was no evidence of burnt varnish on the motor windings, a good sign. I then repainted the end bells (being careful to mask all the screw and bearing holes). The brown color is simply the partly-used can of spray paint I had on hand. After reassembly, the motor works pretty well, but I need to clean up the output shaft -- lots of burrs on it from past abuse.

Photo 1:

Comments: Overall view of motor
Source: Douglas W. Jones

Direct Link
IMG Code

Photo 2:

Comments: Nameplate on motor
Source: Douglas W. Jones

Direct Link
IMG Code

Photo 3:

Comments: Oil plug and electrical connection
Source: Douglas W. Jones

Direct Link
IMG Code

Photo 4:

Comments: The burnt terminal board.
Source: Douglas W. Jones

Direct Link
IMG Code

Photo 5:

Comments: The inside of the end bell after cleaning and painting. The replacement terminal board is at top, the starting switch is at center, and the Klixon thermal protector is at bottom. Faston connectors were added to simplify any future motor disassembly.
Source: Douglas W. Jones

Direct Link
IMG Code

Photo 6:

Comments: Reassembled and tested
Source: Douglas W. Jones

Direct Link
IMG Code