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Restoration & Repair Tips Board

Re: Running a 12 volt hydraulic pump on 6 volts????

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chevytaHOE5674

12-14-2012 20:49:40
74.221.60.204



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He should mount the biggest 12v alternator he can on the tractor and then couple that with the biggest battery he can stuff in the tray and then hook the plow pump up.
I have a 86 chevy with an 85? amp alternator and two good batteries. Even with that setup the lights go dim when the plow is raised or angled. And if I'm plowing in a tight areas with lots of lifting and angling the alternator really starts to whine. Been meaning to pick up another alternator and mount it under the hood somehow.

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old

12-15-2012 08:08:25
209.86.226.34



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 Re: Running a 12 volt hydraulic pump on 6 volts???? in reply to chevytaHOE5674, 12-14-2012 20:49:40  
First off this is not an attack at you.
This last statement of yours had got me thinking. You have one of 3 things to think about. #1 Not all Hydro/electric units are the same and some draw a heck of a lot more amps then others.
#2 your unit has a weak motor so it draws way to many amps.
#3 The hyd oil you use is thicker then the units I have owned over the years
I have owned 3 of these hydro/electric units and none of them had that big an map draw. One was on a toter and was used for hooking up the mobile home and we did not run the engine when doing so and never a starting problem.
Another on on a Dodge 3/4 ton truck and it was used on a dump bed and we would lift that bed all the time with out the engine running and never a high amp draw and an engine start problem.
But these units used ATF as the hyd fluid and that means thin oil so any one of those come into play so what you say maybe right in your case but not in all cases. Understand what I am saying so we both are likely to be right at some point so we both can not know for sure which of use it correct

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chevytaHOE5674

12-15-2012 09:17:22
74.221.60.204



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 Re: Running a 12 volt hydraulic pump on 6 volts???? in reply to old, 12-15-2012 08:08:25  

old said: (quoted from post at 09:08:25 12/15/12)#1 Not all Hydro/electric units are the same and some draw a heck of a lot more amps then others.

#2 your unit has a weak motor so it draws way to many amps.

#3 The hyd oil you use is thicker then the units I have owned over the years


#1. He said it is an old Western unit. I happen to have 2 western plow pumps, both an old cable control unit and a newer solenoid control unit. They both draw between 180 and 200 measured amps. Guess what the instruction manuals for both advertise 180-200 amps as their max draw.
#2. One of my units has a new motor and the other is pretty new and still in great working order.
#3. Both units are running the manufacture spec'd ATF fluid.
Your applications are different than continuous snow plowing. The toter you probably lifted up the mobile home and then hauled it someplace thus having the motor running and charging the battery. The dump truck you probably dumped a load and then drove someplace to load it back up. Not sure why anybody would raise a dump bed or lift mobile homes continuously all day without charging a battery, just like nobody who plows snow would/could operate without charging the battery.
Come up north where it really snows and hop in a plow truck with somebody and count how many times they raise or angle the plow over the course of an afternoon. You would be surprised and how much you are using that pump and drawing those kinds of amps. There's a reason that most guys who plow run larger amp alternators and dual batteries. Sure you can raise it and angle it a few times on a full charge but not enough to finish your driveway.
Maybe down in Mo where you get maybe 20 inches of snow over the course of a season you could get away with it as you don't have to plow very much at all.
This post was edited by chevytaHOE5674 at 09:19:06 12/15/12 2 times.

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old

12-15-2012 10:36:18
209.86.226.32



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 Re: Running a 12 volt hydraulic pump on 6 volts???? in reply to chevytaHOE5674, 12-15-2012 09:17:22  
Still again it can in fact depend on the pump unit and the amp draw of said unit. Yes I understand on a plow rig you may or may not run the pump a lot or a little and that all depends on what your plowing and how to plow it. I simple long drive way you may only lift ti a few times but a parking lot you lift ti a lot so unless you know and I know what he is going to do neither one of use can be correct and I did not notice that he said where he was. As for coming up north no thanks BTDT and not any more. Yes I have lived up in MN still have family up there as well as a number of other places up north so yes I know the weather. The whole point is that you and I can not be sure which is correct because we are not hands on and there working his machine so to attack one is wrong but to give an opinion is another thing

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