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  #1  
Old 01-18-2005, 09:15 PM
General Grounds General Grounds is offline
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plow seems to be drawing much power...

:blob3: it seems that when to plow is attached im drawing alot of power. if the lights are on there is a consideralbe dim when angling or lifting the plow, i even hear the fan change speeds. im thinkin eithere the alt. is on the outs or the pump or motor are going bad. all connections are cleaned and ludbed, so anything else i may be missing???? thanks tony
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Old 01-19-2005, 07:45 AM
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Grassmechanic Grassmechanic is offline
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Plows do draw a lot of power. Without knowing the details of your vehicle, it sounds as if you are using an 85 amp alternator. The minimunm I would use is a 120 amp. Also, a weak battery could cause lights to dim when plowing.
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Old 01-19-2005, 08:41 AM
AL Inc AL Inc is offline
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Tony, my 02 2500HD has the plow prep package and it still does that when raising or angling the plow. I've plowed 12-15 hours straight with this truck and never a problem. I take it your truck only just started doing this? Like grassmecanic said, check battery and alternator.
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Old 01-19-2005, 09:15 AM
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grass_cuttin_fool grass_cuttin_fool is offline
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Even with 2 batteries and a heavy alternator, the lights are going to dim and the fan is going to change sounds, it is a very heavy draw/drain on the electrical sytem when the electric pump is working
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Old 01-19-2005, 01:16 PM
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DLCS DLCS is offline
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I've never seen a truck that the headlights didn't dim a little when the plow is operated. If it s getting worse first thing that i would check is the connections. If that doesn't help then it could be the motor getting ready to take a dump on you. But like I said alot of trucks headlights dim under load all the plow trucks that i've owned did, even my diesels with 2 batteries and heavy duty alternators.
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  #6  
Old 01-19-2005, 01:20 PM
Tvov Tvov is offline
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If this just started happening, it could be because of frigid weather. Even when it is not that cold (like, maybe, 25 degrees {!}), when I first start out plowing the electric draw is great until everything warms up and gets moving. But even after warming up, lights have always dimmed when I use the plow.
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Old 01-19-2005, 05:58 PM
General Grounds General Grounds is offline
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:blob3: hey guys, i understand that the lights will dim, yes but it is signifingant, i do have a heavy duty alt. and the battery is a new interstate, it is so obvious that the fan fir the heat varies alot. tony
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  #8  
Old 01-19-2005, 06:42 PM
kipcom kipcom is offline
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Quote:
Originally Posted by General Grounds
:blob3: hey guys, i understand that the lights will dim, yes but it is signifingant, i do have a heavy duty alt. and the battery is a new interstate, it is so obvious that the fan fir the heat varies alot. tony
Tony, as you have already heard...Not knowing what type plow and vehicle you have I will say this. Almost every plow will dim lights, slow the fan blower, make the volt meter go negative volts....mostly due to the older plows drawing so much amperage. As long as your alternator can produce more voltage than is being used, you wont end up with a dead battery or system.

If you know how or know someone who does...why dont you check the amp draw at the plow motor. Meyer / Western / Boss / Curtis and others have specs on their websites.

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Old 01-20-2005, 01:07 AM
CCWKen CCWKen is offline
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Check all the ground connections. The battery to ground (chassis) connection is usually the culprit. Depending on the pump, it's common for the motor to draw anywhere from 85 to 200 amps. That's more than enough to dim lights.

Also, Check to make sure you don't have any of the hydraulic lines pinched or kinked. If this is an older unit, the flex lines will deteriorate and all but seal or close-up. The motor/pump has to work harder to overcome the blockage.
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  #10  
Old 02-08-2005, 10:31 PM
Staffordnurseries Staffordnurseries is offline
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connections

Mine was acting terrible just like that, dimming even stalling the truck....it was connections. No heavy alternator, no great battery and it works fine now with very clean connections...they didnt seem to look dirty, but they must have been just in the right spot
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