As requested... one less than the other shot as I sold the Craftsman 80 DP over the winter along with the overflow blocks as I decided one of each major tool was sufficient
Craftsman Block motor Bench Grinders - What's the Fuss (with resource information)
- Thread starter torqueman2002
- Start date
As requested... one less than the other shot as I sold the Craftsman 80 DP over the winter along with the overflow blocks as I decided one of each major tool was sufficient
OP
torqueman2002
Well-known member
overflow blocks !!?!! 
Take it back, take it back!
Take it back, take it back!
OP
torqueman2002
Well-known member
Nice pair, BTW.
I'm pretty sure I haven't said that to a guy before. But, I could be wrong.
I'm pretty sure I haven't said that to a guy before. But, I could be wrong.
those are exactly what I was envisioning.
I'd be in for a set or 4 also. OEM is nice but I'm not a collector (says the guy with 4 grinders) I like the idea of being able to replace the shield easily should it be needed. Toothpaste can only do so much to my current shields.
Bioshield and safety glasses every time I plug in a grinder to electricity and stay on until they totally stop spinning. but eye shields are a nice extra caution.
cajunfirehawk
Well-known member
Thank YOU... super clean setup, one day...As requested... one less than the other shot as I sold the Craftsman 80 DP over the winter along with the overflow blocks as I decided one of each major tool was sufficient
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Outlawmws
Well-known member
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OP
torqueman2002
Well-known member
I'll be right back, I have to go check something.
OP
torqueman2002
Well-known member
OK, all's good. Mine are still there.
I thought for a min. they might be mine.
I thought for a min. they might be mine.
cajunfirehawk
Well-known member
Torque; Send me a pic of that fan too, looks like mine, nice boxes, I would expect nothing but that from you Dr Block, can only imagine how neat those drawers are on the inside! 
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torqueman2002
Well-known member
The boxes date back to the time I was pulling wrenches full time. They've been repainted with Rust-Oleum hammered. They've been retired to the basement, since I needed to get a larger set of boxes for the garage-shop.
That fan is great for the humid-hot summers we get up here in SE Michigan. I forget the brand, but it moves a lot of air.
That fan is great for the humid-hot summers we get up here in SE Michigan. I forget the brand, but it moves a lot of air.
My son has just finished painted his block #2, it ran but was in pretty bad shape. He bought it ($25) just to get the shields to replace the missing ones on block #1 but decided to fix it up anyway. It had a brand new capacitor in it and a relay/circuit breaker that had been wrapped in tape and slathered with silicone. When he put it back together it wouldn't run just the hum of a bad cap or relay. I undid the PO's mess and found the relay had been broken into several pieces recently, hence the band-aid "repair". The relay is completely different than the one in my 397.19460 1/2hp.
It is a 397.19590 1/2hp and the "relay" is stamped 2CR15-205H3A, a quick search came up empty. The part seems to be more of a thermal breaker than a relay. Any other 19590 owner have the same part or a different #?
BTW, block #1 came out pretty nice. It is a Honda Civic color.
It is a 397.19590 1/2hp and the "relay" is stamped 2CR15-205H3A, a quick search came up empty. The part seems to be more of a thermal breaker than a relay. Any other 19590 owner have the same part or a different #?
BTW, block #1 came out pretty nice. It is a Honda Civic color.
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torqueman2002
Well-known member
mikegt4, the paint is wonderful.
For info. on Relays, Start-Up Current, see post #5 above.
For info. on Relays, Start-Up Current, see post #5 above.
that was the first place I looked. With zero hits when I Googled 2CR15-205H3A I am beginning to wonder if what he has is really what Craftsman put in. I would gladly go with what other people have in their 397.19590 grinders.
My son works in the body shop business so he is into shiny and fancy paint.
cajunfirehawk
Well-known member
He does great work
OP
torqueman2002
Well-known member
Is this the model you have?
I'm not sure what relay these have. Unfortunately, these relays are probably na.
Because these are not the typical automotive relay (voltage activated) replacements need to be matched to OEM current specifications. The relay needs to OPEN the start-up circuit at about 75% rated speed, to prevent burning up the start-up circuit.
If I can find the correct pn, I'll post it here. (4CR-21-750) That way, you may be able to find a replacement on eBay.
EDIT - Here's a SlideShow of the wiring on a 1/2-HP m-397.19590.
http://s786.photobucket.com/user/torqueman2002/slideshow/CM 50 HP 397_19590 115V 230V Brownstown
4CR Style - disassembly.
http://s786.photobucket.com/user/torqueman2002/slideshow/CM 011 Start Up Relay
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elguappo
Well-known member
Man this thread is full of great info.
Love it.
Love it.
bubinga
Well-known member
Yeah, this is a great group.
Can usually get a lot of help here.
Can usually get a lot of help here.
cajunfirehawk
Well-known member
Dr Block (torqueman2002) is the man behind the curtain that pulls this all together, IMHO 
THANKS Mike!
THANKS Mike!
Dr Block (torqueman2002) is the man behind the curtain that pulls this all together, IMHO
THANKS Mike!
What he said!!
Be carful around here because before you know it you'll be hooked and have these grinders multiplying like rabbits and then torqueman will be having give the grinder pledge HAHAH..
OP
torqueman2002
Well-known member
Thanks guys.
I can't do it by myself, there's a lot of knowledgeable, helpful members posting here and on the official Block thread.
I can't do it by myself, there's a lot of knowledgeable, helpful members posting here and on the official Block thread.
Cruzan80
Well-known member
Pseudo-Block? Looks to be the same kind of shape in the center, with the xtra long arms as the 1HP blocks. What is the amp rating on the 1HP?
https://boulder.craigslist.org/tls/6096742233.html
https://boulder.craigslist.org/tls/6096742233.html
Is this the model you have?
I'm not sure what relay these have. Unfortunately, these relays are probably na.
Because these are not the typical automotive relay (voltage activated) replacements need to be matched to OEM current specifications. The relay needs to OPEN the start-up circuit at about 75% rated speed, to prevent burning up the start-up circuit.
If I can find the correct pn, I'll post it here. (4CR-21-750) That way, you may be able to find a replacement on eBay.
EDIT - Here's a SlideShow of the wiring on a 1/2-HP m-397.19590.
http://s786.photobucket.com/user/torqueman2002/slideshow/CM 50 HP 397_19590 115V 230V Brownstown
4CR Style - disassembly.
http://s786.photobucket.com/user/torqueman2002/slideshow/CM 011 Start Up Relay
Yes it is a 397.19590.
My 397.19460, also a 1/2hp but a flat top about 10 years newer, uses Klixon 4CR-21-705 which is completely different (doesn't even look the same).
Here are a couple of photos of the Klixon 2CR15-205H3A. The broken cover fits over the blue coil.
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OP
torqueman2002
Well-known member
I wonder if the PO substituted that 2CR for the OEM 4CR. You might try posting it in the main Block grinder thread, to see if anyone has the same model Block and what relay they have. http://www.garagejournal.com/forum/showthread.php?t=157794
The terminals with the white wire, look like they have seen some serious over temp/high current conditions.
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OP
torqueman2002
Well-known member
It sure does look like a poser!
I was duped by a 3/4-HP one, but bought it anyway. I got some good power cordage and an emergency stop switch, plus some extruded aluminum frame work.
The best part was tearing into the poser, to see the wimpy insides, including sleeve bearings.
That one has a nice wide 'track' that could serve as a good buffer.
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The grinder had some water damage and the PO had done some recent soldering on the relay. The relay was broken and "fixed' with electrical tape and silicone. It's had a rough life. It did run good when my son bought it. My guess is that the PO replaced the cap and messed with the relay in order to get it running so that he could sell it. Probably spend more than the sale price.
cajunfirehawk
Well-known member
OP
torqueman2002
Well-known member
One of the BIG Boys!
Locker537
Well-known member
Locker537
Well-known member
Picked up my first block grinder and homemade stand today.
Looks like everything is there and it runs well. I'll ring test the stone soon. I did notice the wheel cover is loose.
I got it fully disassembled. I can't believe how clean the insides are. I did have to use a 1/4" impact driver (not wrench!) to loosen the nut holding the wire wheel and grinding stone on.
cajunfirehawk
Well-known member
Had a visitor over the weekend and while in my shop he saw I had a few block grinders and said; "I have one of those, it was my dad's, it is a 1/2hp I think and seems to be in good shape but when I turn it on the wheels won't spin, they try to, but they never do, even if I help it...? So I told him I would ask the experts...what says the hive; bad cap would be my guess? Dr Block?
I had this issue on one of my blocks and when I tore it apart I found that the bearing washer was installed backwards and the felt washer was on wrong also. Once I corrected the issue it ran like a champ..
Maybe a knot in the cord is restricting the current flow
Just kidding...
I'd see if the wheels spin freely with no power. If ok, my guess is a broken wire on one of the windings. That is very common, as the wires are typically just floating around inside, but easily fixed by scraping the ends/twisting together/dab of solder.
OP
torqueman2002
Well-known member
It could be a cap, electrical, or misalignment due to parts out of correct place or rotor-to-stator clearance.
That's a SWAG, but based on info. gathered here and on the other Block thread.
http://www.garagejournal.com/forum/showthread.php?t=157794
Best of luck, let us know what happens next.
I'd be glad to take a look at it, but shipping makes it hard to justify it.
That's a SWAG, but based on info. gathered here and on the other Block thread.
http://www.garagejournal.com/forum/showthread.php?t=157794
Best of luck, let us know what happens next.
I'd be glad to take a look at it, but shipping makes it hard to justify it.
bubinga
Well-known member
Locker537
Well-known member
I took the one I bought apart and gave all the parts a cleaning with Simple Green and then some CLP. A white Norton grinding stone and Weiler wire wheel showed up and it's time to put it all back together.
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torqueman2002
Well-known member
I took the one I bought apart and gave all the parts a cleaning with Simple Green and then some CLP. A white Norton grinding stone and Weiler wire wheel showed up and it's time to put it all back together.
Pictures?
Locker537
Well-known member
Pictures?
Post #670 above has the pictures from when I bought it.
http://www.garagejournal.com/forum/showpost.php?p=6471157&postcount=670
I'll grab some pictures as is goes back together with the new wheels.
I didn't do a restoration, just a cleaning.
Locker537
Well-known member
The new Norton wheel shipped and sold by Amazon arrived damaged...