please tell me im wrong

Anonymous-0 · Feb 13, 2009

i bought a new motor/hydraulic pump for my kawasaki mule that dumps the bed.it is 12 volts the motor sets on top the pump it is all one unit about the size of a football.any way i wire it up to the toggle switch .the up position on the toggle switch is supposed to raise the bed and down lowers it.pretty simple operation.the motors wire leads are about a foot long where they connect the wires from the switch this is where i put my volt meter at i have 12 volts going to and threw the motor and back the other wire.so this tells me 12 volts is going to and in threw the motor and back out but the motor does nothing not even a hum.ar first i thought maybe it wasnt getting a good ground so i connected a jumper wire from one of the 2 mounting bolts directly to the negative side of the battery and still nothing.am i doing something wrong or did i just get a bumm motor. thanks RICK

Anonymous-0 · Feb 13, 2009

You need to load the system with a headlight or spotlight to see if you have a strong 12 volts, or try another source. Your meter may show 12 volts but if you have a bad/dirty connection/wire, it's not enough to power your motor. Your meter maybe reading 12 volts, it's maybe only carrying an amp if that. Confused yet.

wilamayb · Feb 13, 2009

Sounds to me like you dont have a ground for your motor. Your volt meter reads 12V b/c you are gounding the meter, but that motor wont run until you have a good ground. If the motor is made to have a chassis ground then you may have to scracth off some paint before you get a good connection.

dizenexxus · Feb 13, 2009

i agree. a loose positive connection would still show 12 volts, but may still be low amperage. check your positive path from the battery and trace it all the way to the motor, or, if you have an ampere function on your multimeter, disconnect the positive termination from the motor. now connect the positive lead that you disconnected from the motor to the positive lead of your multimeter, then connect the negative lead of your multimeter to the positive terminal on the motor. hit the switch. read the meter. you should be reading MANY amps. really not sure what sort of current your motor would draw, but dead rotor current (amps) (momentary draw) on most motors found in the household (ie refrigerator motor) can in some cases be over 100 amps (momentarily). so if you're pulling 5 amps to your motor when it's locked rotor (motionless), something's wrong with the wiring.

Anonymous-0 · Feb 13, 2009

maybe not. howmany wires out of the pump motor 2 or 1 howmany wires to the switch from the power supply howmany terminals on the switch. ...now did the pump run on the up stroke and on the dowm stroke...and is there a hydrolic valve to make it go up or down and is it manual or electric please post back what you got may be a broken wire in the ground

John T · Feb 13, 2009

Dont forget, if theres no load a voltmeter is still gonna read near the battery voltage even if hangin out there at the end of a ton of resistors, it takes current draw to drop voltage across loads. An "ideal" voltmeter has infinite resistance so wouldnt affect things but, of course, no such meter has been made yet lol

For sure verify alllllllll conenctions cuz a bad one is resistive and can drop voltage. You want to drop the voltage across the load NOT loose or bad/resistive connections which waste energy in the form of heat.....

John T

Anonymous-0 · Feb 13, 2009

the toggle switch itself has 3 wires 1 is from the main power source which is the battery.the other 2 are only hot when the switch is manually held in the up position or down position.the motor is a reversible motor it runs one direction to raise the bed and the other direction to lower it.say for instance when i hold the switch in the up position 12 volts goes down that wire through the motor and back up the other wire to the switch. or vise versa when i hold the switch in the down position.if it was a ground problem it should have ran when i put a jumper from the mount directly to the negative side of the battery but it didnt. what now RICK

JOCCO · Feb 13, 2009

Sir in lew of what others have said take motor off or do it in place. Hook to a good battery with ground and power directly to motor. and then what happends? This is like bench testing a starter. Would/should tell if motor works!!

VADAVE · Feb 13, 2009

Look for another wire on the motor. Sounds like you don't have a connection and probalby the ground. I bet there a negative wire at the moter you have to hook up.

Anonymous-0 · Feb 13, 2009

tommorro im going to look at the grounding a little closer got a feelin i have a ground problem. there is only 2 wires coming from the motor and they are both hot wires.i will give a update tommorrow sometime thanks RICK

Janicholson · Feb 13, 2009

I figured it out!!! (I think)
The motor is isolated from ground.
The motor runs either way
The leads go to a switch that reverses the polarity of the voltage going to the motor.
The switch grounds one lead, and gives power to the other. when switched to the other direction, the switch grounds the first lead and powers the second.
The switch must have a good ground, or a second wire going to it that is ground. The power seat and window motors on vehicles work the same way. JimN

Anonymous-0 · Feb 13, 2009

i think janicholson might have it right.i will dig a little deeper tommorrow.RICK

Don-Wi · Feb 13, 2009

I wired up a window motor on our chopper's spout like you're talking. On the tractor end it took some time to figure it out. I have a 6 terminal toggle switch (on-off-on).

Here's a picture of how I did it. The 2 yellow wires are coming from the chopper. I connected them to both side of the switch, one side on the + terminal, the other to the -. I found those 3 way connectors at the hardware store. I wrapped them in electrical tape before stuffing it all in the dash so they didn't short out.

Donovan from Wisconsin

Paul in MN · Feb 13, 2009

I'll bet that circuit needs a relay. I can not imagine the current needed for such an electric motor going through a small switch. Like in your car, you have a whole bunch of relays, like for your headlights, horn, fuel pump, wipers, A/C, etc. The usual relays are a little black plastic box with 6 or more terminals. They ofter say "Bosch". They can switch 50 amps if you buy one with that rating. Available at NAPA and others, and they will have the correct wiring schematic. Basically you need a heavy power wire to the relay, and the lighter wires coming from the switch (maybe 3 wires), and 2 heavy output wires from the relay to the motor. You may need a heavy ground wire going to the relay (this varies). I picture your lift motor as being something like the lift motor on a Meyers snowplow. All the above is a guess, but I'd bet some money that the relay circuit is necessary.

Paul in MN

Tx Jim · Feb 14, 2009

I have a Butler bed with a hay spear built into bed frame that operates electric over hydraulic and it has relays. When I let a bale down it raises slightly then reverses to lower bale. This must be correct because it's been doing this way for 9 years.

Anonymous-0 · Feb 14, 2009

So how was the old one wired arent they the same motors

Anonymous-0 · Feb 14, 2009

i bought the mule at a auction and the other motor and pump was there but it wasnt wired up and the hydraulic reservoir was broken off the motor. RICK

cjk · Feb 15, 2009

This will need a relay as mentioned above to save the switch from burning out.

please tell me im wrong

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