Author Topic: Block Grinder rescue - UPDATE: Go-Blue! 1 H.P. Model 257.191600  (Read 19482 times)

Online torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #30 on: July 14, 2013, 03:48:24 PM »
Put color on the pieces today. It was a good day, warm, little to no breeze. The inside was so bad, I decided to use up some silver that's been hanging around.













Thanks for looking.
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Online torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #31 on: July 14, 2013, 04:51:02 PM »
These next pics. show the casting /pn of the painted pieces.

End Frame    pn 50 B   4988539 (LH)


End Frame    pn 50 B   4988539 (RH)


Wheel Guard      pn   A1   4971611 (RH)


Wheel Guard      pn   A1   4971614 (LH)


Wheel Cover      pn    1   4971613 (LH)


Wheel Cover      pn    1   4971610 (RH)


Base with Quench Tray   pn    4989451 / 4989452
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Offline Uncle Buck

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #32 on: July 14, 2013, 07:57:46 PM »
I guess I don't understand, did you first paint it all blue, then decide to paint it silver, or did you paint the outside blue and the inside silver. And if you did paint the outside blue and the inside silver why did you go to all that work to do that?? Also, if you painted the silver over the blue did you just decide you did not like the blue???
You boys better hold on cause i'm gonna have to stand on it!

NEED A 1/2" BONNEY STREAMLINE COMBINATION AND ANY OVER 13/16" TOO!



Andrew Jackson quote: But you must remember, my fellow-citizens, that eternal vigilance by the people is the price of liberty, and that you must pay the price if you wish to secure the blessing.

Offline BuckHenry

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #33 on: July 14, 2013, 09:43:45 PM »
I guess I don't understand, did you first paint it all blue, then decide to paint it silver, or did you paint the outside blue and the inside silver. And if you did paint the outside blue and the inside silver why did you go to all that work to do that?? Also, if you painted the silver over the blue did you just decide you did not like the blue???

It looks to me like he painted the inside silver and the outside blue.
Why? Well what do you expect from a blockhead!?!

Online torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #34 on: July 14, 2013, 10:10:46 PM »
Why? Well what do you expect from a blockhead!?!
bluesbro
I am a Blockhead Man!

Sorry about the pics being out of order. I primed, then painted the bottom & insides silver, then flipped the pieces over and painted the outsides & top blue. The band is hammered gold, a little disappointed, not much hammering evident.  fishslap
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Online torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #35 on: July 20, 2013, 09:23:18 AM »
I left rotor shaft and the stator winding at a local Armature shop, they did a high voltage surge test & high pot test to ground on the coils and, checked the rotor for broken internals for $20.

This thing made enough noise and there was enough rust I feel it's money wisely spent.

If it was a car component I would do a voltage drop, but to accomplish that on a stator a MegOhm tester is used.

Before shots.




The following pics. show the clean up of the rotor shaft and threaded ends; I used BB's cousin to wheel the shaft, but the area near the rotor got a treatment of Black Diamond in the blast cabinet.












I could re-assemble everything at this point, but there's still this groudy felt washer to deal with.


I have considered making one or cleaning it and re-using, but I have ordered 'factory' replacements, which should be here next week.

I found a place that has many of the grinder parts I didn't expect would be available (including some of the cast parts and labels):
  • End Frame (Case)
  • Wheel Guard (Inner)
  • Band (Center Cover)
  • Label
  • Tool Rest
Model: 257192190 1 H.P.
http://www.ereplacementparts.com/craftsman-257192190-grinder-parts-c-158286_159871_159949.html

Here's a video of Baldor large motor manufacturing.
BALDOR - Kings Mountain, North Carolina Plant

« Last Edit: July 20, 2013, 09:30:00 AM by torqueman2002 »
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Online torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #36 on: July 21, 2013, 11:57:47 AM »
After I checked my order status; GF's post provided the nudge to re-assemble BB and not wait for the order from ereplacementparts dot com/

I checked the order status this morning.

I had a bad feeling when I read this; actually ALL the parts are 'On Order From Manufacturer'.


 Bslap

I've been to the Sears parts site, all the items I ordered are no longer available.  :groaner:


After rinsing the bad old felt washer in Acetone, it was still very dark with rust.
I made a new felt washer, so I could get on with re-assembly.




#0053400 is just the right OD






I removed the adhesive backing, trimming enough to bring it to the original's thickness. Good to go!
New one on left, good old one on right.

I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Online torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #37 on: July 21, 2013, 12:39:04 PM »
With the new felt washer done, the re-assembly can begin.

Note: When the shaft was cleaned of rust, the black finish was also removed. Not wanting the rust to begin again, it was painted. That was a mistake for not only the area where the bearings seat, but also where the wheel flanges surround the stones and wheels. These areas now have the paint removed.

I put a small amount of oil on the washers, who's function is to trap frut* and keep it out of the bearings.  *Bits and pieces of unidentifiable stuff.


This is the order the washers go on the left side; felt, then spring washer with 'fingers' towards the bearing.


Not show above - the clip on the inner side of the bearing(s); here is a shot of it before removal.


After removal.


The felt and spring washers in the End Frame (Case) LH side, ready for rotor-shaft with bearings.


Both End Frames, Stator & Coil assembly, and Rotor-Shaft & Bearing assembly


Assembly of the End Frames is done; next - terminating the wires, testing, and buttoning it up.






« Last Edit: July 21, 2013, 12:55:01 PM by torqueman2002 »
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Online torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #38 on: July 21, 2013, 01:50:23 PM »
I cleaned up the power cord and put on a new plug.

Notice anything wrong with this picture or the next?




How about this one?


The old plug on top looks like a HF special, which are OK for a light duty application; if they are wired correctly. See above for examples of what not to do.
The Pass & Seymore, on the bottom, is a high quality replacement.


New plug, wired correctly. White wire goes to neutral terminal/blade (silver).

The HF plug above is wired with the Hot (Black wire) to the neutral/blade. This mean the power switch was opening the neutral; leaving the Hot wire circuit always complete.


This plug has the stripped ends of the wires fully protected, and visible below the clear plastic inner cover.  From the bottom - neutral (White wire) connects to the silver blade, ground (Green) connects to center blade, hot (Black) connects to the brass blade.

More 120VAC plug wiring information here: http://www.hammerzone.com/archives/elect/accessories/ext_cord/end1/replace.htm
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Offline Hofferwood

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #39 on: July 21, 2013, 02:18:25 PM »
I cleaned up the power cord and put on a new plug.

Notice anything wrong with this picture or the next?




 


Yea,
You took the protective film off of the 87 fishslap  lolx
11yrs in a forge shop--been out 6, and I still can't take it off :groaner:

Great work Mike thumbsup2
Chuck

If it aint broke, Fix it till it is!

Offline BuckHenry

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #40 on: July 21, 2013, 02:24:05 PM »
That old grinder is really starting to look like something. Not bad for a blockhead.  thumbsup2

Offline scottg

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #41 on: July 21, 2013, 03:53:18 PM »
Really looking sweet! Great project.
 So, yeah 3600 is too fast for most buffing. But you can mount a hard wheel (close sewed cotton. I always mount 2 together, they're skinny)  and do your heavy buffing work/roughout just perfect on this machine.
 You don't have to pull the frames or extend the arbor for a lot of work.
 
  I did that with mine. I use black heavy am/ox polishing compound on it.
 
 Here's a free tip. Polish will not stick to any wheel spinning at 3600. At that spreed it just slings off.
So catch it when spinning up, or cut the power and apply your polish as its spinning down.
 Then you can load the wheel and actually get some work done.

  Once its loaded you can "cut" pretty good.
 You still need a slow speed wheel (about 1000rpm) to buff to a mirror polish, but the grinder will rough out steel and get you close.
  Go with a light touch on brass and watch it.   It will want to cut into soft metals and forget plastic. You can't work light enough not to cut into plastic   
  yours Scott

Online torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #42 on: July 21, 2013, 06:14:28 PM »
11yrs in a forge shop--
I looks great for 11 years of hazardous duty! Must be the film.  :D

Thanks for watching.
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Online torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #43 on: July 21, 2013, 06:18:01 PM »
That old grinder is really starting to look like something. Not bad for a blockhead.  thumbsup2
Thank you!

I Am a Blockhead Man.
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Online torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #44 on: July 21, 2013, 06:22:26 PM »
Scott, those tips will help when I begin fixing up the '71 MGB.

Thanks.
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

The Garage Gazette

Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #44 on: July 21, 2013, 06:22:26 PM »

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