I unplugged the bucket and the machine does not surge when I move the thumb switch, it does surge when I pull the trigger. And just one beep when I turned the key one
ive been reading trying to follow along...
at first it sounds like you might have a bad aux coil, but you mention you changed the RH handle assy, are you sure you have the wires in the proper place in the connector?
the RH paddle switch is a PWM (pulse width modulation) checking voltage at the aux coil you will see variable voltage depending on the paddle position. 2-8 v is about normal, 10v is MAX you should see.
are you probing both wires at the connector, or are you using a seperate ground?
:drinkup
Hi crewchief888 thanks for chiming in,
I checked both coiles, they both have a 2 wire going to them, I forget the color, but I checked the ohms and i think they were around 4ohm, I checked at the plug from the new right hand controller, and when I replaced it I'm 99% sure that I put everything back the way it was, I bought the machine used so I'm not sure if anyone else has switched anything but I wouldn't see why someone would do that, the controller was rusted in place and looked like it was never replace and I don't have a diagram. If someone has color to PIN number I can verify it is correct.
Now, I checked the coils also by putting the front one on the back, and vise versa and also ohms , and also reversing the plugs for them, and when I ise the right hand "trigger" it will open when on front coil, or if I switch coils it will close the bucket, leading me to believe that the coils and valves are working.
When I checked voltage at the plug, with ground hooked to the battery.
I think the first pin was 12v, 2nd ground, than I think it skips a hole and the 4th, is white with red stripe, it had about 4v, with out touching anythin, when I moved the thumb switch to the left the voltage went up to about 6.6 volts, move it to the right and the voltage went down to about 2.2. But, at the coil, I could not get a reading with the trigger or the thumb switch, I'm assuming this is where the pulse width modulation come into play. I'm not sure and this is where I'm stuck..
Also, the left rocker switch did show that 2 of the wires in the plug were 12v, and the right hand rocker showed voltage but I don't recall the colors of wire or pins since I was mostly look for power from the thumb switch to control aux 4in1 bucket
Can I ask where the main board or logic board is kept, maybe it goes to there and I need to check it
Thank you
try checking for voltage with both probes at the aux connector, you may have a bad ground.
in the RH handle has both 12v and 8v systems 8v is only used for the PWM paddle switch. theres no direct connection between the handle and the aux coils. everything routes through the bobcat controller.
controller is typically on the RH side, inside frame. there are 2 different versions it may have 4 connectors or 2 connectors.
the old 4 connector versions werent as reliable as the later 4 connector and even later 2 connector versions.
old 4 connector controller had a black heat sink sticking out of one end, the later version is slightly smaller in overall dimensions, and does not have the heat sink.
if the controller is bad, they have to be programmed by a bobcat dealer with service software.
:drinkup
try checking for voltage with both probes at the aux connector, you may have a bad ground.
in the RH handle has both 12v and 8v systems 8v is only used for the PWM paddle switch. theres no direct connection between the handle and the aux coils. everything routes through the bobcat controller.
controller is typically on the RH side, inside frame. there are 2 different versions it may have 4 connectors or 2 connectors.
the old 4 connector versions werent as reliable as the later 4 connector and even later 2 connector versions.
old 4 connector controller had a black heat sink sticking out of one end, the later version is slightly smaller in overall dimensions, and does not have the heat sink.
if the controller is bad, they have to be programmed by a bobcat dealer with service software.
:drinkup
I removed the hydraulic lines from the cylinder, placed a drip pan under the cylinder and manually attached the bucket. Then replaced the hoses to the cylinder. It worked to at least get the bucket on. I just have to keep it on there until Bobcat can get a tech out there. Its all under warranty so I dont want to go spending a bunch of time messing with it.you may have a bad coil, or it way be unplugged. PBT & fuel harness is connected on the LH side of the engine, in front of the battery. easiest temporary "fix" is disconnect and remove the cylinder, tie the hoses to the front step, disconnect and cap the lines at the RH upright