753 lost aux hyd

[snowsled]

Hi All, First post and yes, I am having a problem. 753 G I think, 1995 model. We have been using the aux circuit to run a bobcat brand 8' snowplow when the led lights went out the angle functions stopped working. This is a two fuse machine, both fuses are good. Power is good up through the key. I can not find power in either plug on the frame mounted control box under the seat. I hate to replace the switch, which is already coming, but it was a best suggestion by our service guy. I can not find any broken or bare wires, no corrosion on any of the connectors. So looking for suggestions. Maybe the switch will do it, that would be great but not being able to find power in the switch circuit either is concerning. Machine starts runs and operates perfectly aside from no aux hyd and no led lights lighting at the switch.

 

[walio123]

There is no such bobcat with 2 fuses. Is it with square or triangular headlamps on the cabin? If it is triangular is G or S series, if it has squares it is older. If it is really 753G under the seat, there must be a fuse box (at least 8 fuses and at least 5 relays). If it is the older models in the engine compartment where are the hinges on the rear door,must be also two boxes with fuses / boxes that look like relays. And there is a relay under the air filter (at least 4). Check all fuses / relays.

 

[snowsled]

There is no such bobcat with 2 fuses. Is it with square or triangular headlamps on the cabin? If it is triangular is G or S series, if it has squares it is older. If it is really 753G under the seat, there must be a fuse box (at least 8 fuses and at least 5 relays). If it is the older models in the engine compartment where are the hinges on the rear door,must be also two boxes with fuses / boxes that look like relays. And there is a relay under the air filter (at least 4). Check all fuses / relays.

Just two fuses on the panel with the lights, ignition key etc. Two relays under the air filter, looks like glow plugs and shutoff solenoid. No other fuses by the back door either side, no fuses under the seat. There are 4 relays and the control box on the left side, that's pretty much it. Square lights, must be an old version. How do you check the relays?

 

[walio123]

Just two fuses on the panel with the lights, ignition key etc. Two relays under the air filter, looks like glow plugs and shutoff solenoid. No other fuses by the back door either side, no fuses under the seat. There are 4 relays and the control box on the left side, that's pretty much it. Square lights, must be an old version. How do you check the relays?

https://www.youtube.com/watch?v=IpRWcNoLdwQ

 

[snowsled]

https://www.youtube.com/watch?v=IpRWcNoLdwQ

Checked the relays, all good. No power to the aux hyd control box. Traced the wires back, found one worn through. Fixed it, power to box restored, everything is back to working as it should...