Got the 1835Beast running and driving BUT! New issue

[rusty2867]

So I put a new wheel motor on the right side and did a bunch of other repairs while it was down.When I got it running and drove it around a bit with the back door off the temp light came on,I looked in the radiator after it cooled and there is oil in the water however there is no water in the engine oil.So I think it is hydraulic oil since it runs through the bottom of the radiator.My question is would it be safe to put a union in the hoses that run through the radiator and drain the hydraulic fluid from the radiator run it for a bit and see if I get water out of the oil cooler in the radiator? Or would I be risking overheating the hydraulics? I am talking about short term here just as a test.

 

[Tazza]

If you're not running it hard, i can't see it getting too hot, all depending on how long you're running it for though.
The idea is to isolate the cooler right? the fluid will still move around, it will just not be cooled?

 

[rusty2867]

If you're not running it hard, i can't see it getting too hot, all depending on how long you're running it for though.
The idea is to isolate the cooler right? the fluid will still move around, it will just not be cooled?

Yes that is the idea to see if I get water out of the cooler when the hydraulic isn't running through it.

 

[Gearclash]

Yes that is the idea to see if I get water out of the cooler when the hydraulic isn't running through it.

You will be fine bypassing the hydraulic oil heat exchanger temporarily. If the oil crossover in the bottom of the radiator is leaking and the rest of the radiator is good it works fine to rig up an automotive oil cooler behind the regular radiator.

 

[rusty2867]

You will be fine bypassing the hydraulic oil heat exchanger temporarily. If the oil crossover in the bottom of the radiator is leaking and the rest of the radiator is good it works fine to rig up an automotive oil cooler behind the regular radiator.

This is a return type hose going through the radiator right? Does anybody know what kind of pressure they have in them?

 

[Gearclash]

This is a return type hose going through the radiator right? Does anybody know what kind of pressure they have in them?

There is very little pressure on this part of the circuit. The only pressure on it will be amount of pressure in the hydraulic reservoir.

 

[Gearclash]

There is very little pressure on this part of the circuit. The only pressure on it will be amount of pressure in the hydraulic reservoir.

Which temp light came on? Engine coolant or hydraulic oil? It has both. Is your hydraulic oil clear or milky?

 

[rusty2867]

Which temp light came on? Engine coolant or hydraulic oil? It has both. Is your hydraulic oil clear or milky?

I am pretty sure it was the engine temp light. The hydraulic fluid was clean when I changed it and remains clean now.This thing was used in a salvage yard before I got it heck the oil could have been mixed in with some nasty antifreeze and put in the radiator! But It makes me worry!

 

[rusty2867]

I am pretty sure it was the engine temp light. The hydraulic fluid was clean when I changed it and remains clean now.This thing was used in a salvage yard before I got it heck the oil could have been mixed in with some nasty antifreeze and put in the radiator! But It makes me worry!

Yeah so further investigation it is the hydraulic temp light that comes on! I have flushed the radiator enough that it is clean now.I am going to hook the hydraulic hoses back to it and see what happens.Anyone know where I can find a charge pressure sender cheaper than Case? That light is on also but I put a guage on it and it maintains 150psi

 

[rusty2867]

Yeah so further investigation it is the hydraulic temp light that comes on! I have flushed the radiator enough that it is clean now.I am going to hook the hydraulic hoses back to it and see what happens.Anyone know where I can find a charge pressure sender cheaper than Case? That light is on also but I put a guage on it and it maintains 150psi

So I just ran it until the hydraulic temp light came on and I do have the hoses hooked back up to the radiator the charge pressure stayed steady at just under 200 psi.Any ideas why the light would be coming on? The charge pressure light that is and why the temp light also?

 

[Hotrod1830]

So I just ran it until the hydraulic temp light came on and I do have the hoses hooked back up to the radiator the charge pressure stayed steady at just under 200 psi.Any ideas why the light would be coming on? The charge pressure light that is and why the temp light also?

I dont know the spec off hand, but 200 psi of charge pressure sounds good. You will need to find the minimum pressure spec and max temp and compare that to what you are seeing. Best bet is to measure pressure and temp and compare to the switch specs. Could be wiring problem, or pump going out.
A pump going out will create alot of heat and low pressure, but test everything first.
If you havent cut the hydraulic filter apart and inspected it, I would recommend you do so.

 

[rusty2867]

I dont know the spec off hand, but 200 psi of charge pressure sounds good. You will need to find the minimum pressure spec and max temp and compare that to what you are seeing. Best bet is to measure pressure and temp and compare to the switch specs. Could be wiring problem, or pump going out.
A pump going out will create alot of heat and low pressure, but test everything first.
If you havent cut the hydraulic filter apart and inspected it, I would recommend you do so.

I have changed the filter but suppose I could change it again now that I have actually ran it for a bit.

 

[rusty2867]

I have changed the filter but suppose I could change it again now that I have actually ran it for a bit.

Oh yeah and my manual says 150 psi is good if I understood it right but didn't see where it gave min/max pressure

 

[Hotrod1830]

Oh yeah and my manual says 150 psi is good if I understood it right but didn't see where it gave min/max pressure

Usually the manual will give the minimum spec. At 200psi, you should be good.