Norton S-3 Surface Grinder – Up and running again

[bcall2043]

Some time ago I adopted a Norton S-3 surface grinder that was declared surplus by a corporation. I was told it ran when it was removed and I got it for very fair value. It has been stored in my shop on the “back burner”. Recently Charley Davidson, a fellow HM forum member, started to borrow parts from it to get his surface grinder operational. I figured that I had better get mine running so I had a reason to get the borrowed parts back home.:thinking:

Today I drained the hydraulic oil and cleaned out the oil sump. This was not an easy task since the Norton engineers did not provide a drain plug in their design. Had to dip and suck the oil out and then rinse and wipe until clean. Once I got the oil sump cleaned out I remove the coolant pump (a later project) and hooked up the electrical to the remaining system components consisting of grinding spindle drive, hydraulic pump, and magnetic chuck. Everything runs the right direction and seems functional at this point. I was kind of worried about the 3 phase electrical controls but when I opened the control cabinet someone had provided a hand drawn wiring diagram in a plastic bag, nice of them. Now I have to wait until Charley gets back from visiting his dad so I can get the grinding wheel and adaptor back.

I have included "proof of project" in the three photos below. Photo one is the surface grinder as left today waiting for new fresh hydraulic oil.


Second photo it the empty spindle waiting for the grinding wheel to return home.


Photo 3 shows the wiring as left today. Temporary connections needing to be converted to permanent and the enclosure cover put in place.


Benny
The Orphanage Never Closes

 

[Charley Davidson]

Recently Charley Davidson, a fellow HM forum member, started to borrow parts from it to get his surface grinder operational. I figured that I had better get mine running so I had a reason to get the borrowed parts back home.:thinking: Second photo it the empty spindle waiting for the grinding wheel to return home.

You have a key

 

[Old Iron]

Nice looking machine Benny, Did the wheel adapter fit Charley's grinder?

Paul

 

[Charley Davidson]

Nice looking machine Benny, Did the wheel adapter fit Charley's grinder?

Paul

Yes it did.

 

[bcall2043]

….Recently Charley Davidson, a fellow HM forum member, started to borrow parts from it to get his surface grinder operational. I figured that I had better get mine running so I had a reason to get the borrowed parts back home. ..........Second photo it the empty spindle waiting for the grinding wheel to return home.

You have a key

Just kidding Charley. I got a lot more work to do before the grinder is ready to make sparks. 1 have not been able to find a hydraulic oil of the right viscosity. The specification in the manual is 275 to 375 S.U.V. which equates to about ISO 32. The lightest I have found locally is ISO 46.

This morning I cleaned up the temporary wiring and closed up the control box. Oiled all the oil-cup points and greased the grease fittings. Plan to find the right hydraulic oil next week! I also cleaned up an unexpected find from yesterday. In the pile of stuff on the table was a diamond wheel dressing tool with the name Okamoto stamped on it.


The small 5/16 inch wrench was in the hydraulic oil sump. The wrench is not so special but the personalized tool is kind of neat. I suspect that Mr. Okamoto was the machine operator and probably made the tool to fit his needs. Kind of like the Hobby Machinists do for their machines.

Benny
The Orphanage Never Closes