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Jul 21st, 2025 | | | | Joined: Apr 2011 Posts: 50 Shop Shark | | Shop Shark Joined: Apr 2011 Posts: 50 | Found a rebuilt generator 12 volt Delco with the number 1100390 stamped in the side but no metal tag. Does anyone know where I can find any info for this generator such as amps ?? The Delco sight just says obsolete. Looking to replace the one on my 52 1/2 ton with a 235 engine. Thanks for any help. | | | | | Joined: Mar 2004 Posts: 6,189 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,189 | I did a quick Google search and that number comes up as 6 volt generator used on farm tractors (Oliver, Farmall, JD, Case) from 1939-56, so Im betting it has a low amp rating. Mike B  | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | How many brushes does it have? If it's a 3-brush unit, it won't work with the 3-unit regulators used from the late 1940's on up. Does the housing have one diameter all the way from front to back, or is there a stepped-down section? The heavy-current generators with the stepped housing usually had a big rubber grommet around the front mounting bolt, especially the 45 amp ones used on Buick, Olds, and Cadillac. Most Chevy and Pontiac generators did not have the front grommet, and they were 35-amp rated.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Apr 2011 Posts: 50 Shop Shark | | Shop Shark Joined: Apr 2011 Posts: 50 | Three brushes and there is a step down. | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | A 3 brush generator is a very low output 6 volt. Better try again if you're looking for a high current 12V.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Apr 2011 Posts: 50 Shop Shark | | Shop Shark Joined: Apr 2011 Posts: 50 | | | | | | Joined: Nov 2007 Posts: 190 Shop Shark | | Shop Shark Joined: Nov 2007 Posts: 190 | 1100390 was a short step down case 2 brush 12 volt 20 amp generator used on Case tractors from 1957 to 1960.
There never was a 3 brush Delco generator in a step down case. Three brush generators had the brushes mounted on the rear plate. The later model long and short "step down" cases had the two brushes mounted in the case itself and the end plate then became free of any brushes and or brush holders.
Ken
| | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | It sounds like that one might have been assembled with the wrong rear plate if it's got 3 brushes, but that doesn't seem to be possible if there are also brush holders in the case. Pictures would be good in this situation!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Nov 2007 Posts: 190 Shop Shark | | Shop Shark Joined: Nov 2007 Posts: 190 | Yep, Im with Jerry....post some pictures of it if you can. Has my curiosity up now.
Ken | | | | | Joined: Apr 2011 Posts: 50 Shop Shark | | Shop Shark Joined: Apr 2011 Posts: 50 | http://www.ebay.com/itm/Delco-Remy-12V-Generator-GM-1100390-/301789282122?hash=item46440aff4a:g:Wc4AAOSwAYtWOYnf&vxp=mtr
Hope this link works. I have not seen the generator. Just going off what owner said.
Last edited by 485WINDO; 02/19/2016 5:05 PM.
| | | | | Joined: Nov 2007 Posts: 190 Shop Shark | | Shop Shark Joined: Nov 2007 Posts: 190 | That is a short case "step down" 12 volt 2 brush generator with a bearing on the rear end plate instead of a bushing. This would have been typical of some tractor applications. | | | | | Joined: Nov 2007 Posts: 190 Shop Shark | | Shop Shark Joined: Nov 2007 Posts: 190 | If your looking for a 12 volt replacement generator to replace the original one on your 52 you need to be looking for a long case step down 2 brush generator. The distance from inside of one end plate to the other is the same as on your original 6 volt and you can then take your original pulley and install it on the 12 volt generator....Your original pulley has an offset to it so you will need it. By doing this there is no mounting modifications involved. There were many many variations of the long case 12 volt generators used.......tell you what I will just send you a message with my contact info and I can help you find one or build you one.
Ken | | |
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