Hello & Help! Case SR175 overheating

[dpc]

Hello, we are a Case dealer in Northern Ireland and have sold a customer a new SR175 and planer, supplied by Universal Bingham - 400mm width drum. We have upgraded the machine to a hi flow model by fitting the proper Case hyd installation kit. The machine starts overheating after 10 minutes usage when it gets above 80bar. We have replaced the hyd oil cooler and T piece valve at the cooler but are now scratching our heads. Case are saying that the machine is not able to power the planer but you can fit upto 600mm drum to a SR175. The machine is lying in bits in our workshop and Case are now saying they may have to bring an engineer over from the USA to look at this issue. Any help would be appreciated.

 

[Tazza]

I'm sure there was another brand of machine that had the same sort of issue. When running a hi flow attachment it was in the manual to only run it for a set time as it does generate quite a lot of heat.
The way i understand it is that most machinesa re plumbed pretty close to the same. The oil from the pump goes to the attachment, then back to the return line that pulls the oil back to the pump to the attachment. Not all the returning fluid goes through the oil cooler, some does, but not all. The heat builds up as not enough is being cooled and eventually it exceeds it's rated temperature.
This is from how i understand the oil path of the machines i have fiddled with that i have looked at the path of the oil to the cooler. It may not be the same on all machines though.
Could this be the issue?
Another thing to do may be hook a thermocouple to the oil cooler, see just how hot it gets. If it gets too hot, you aren't getting enough air through it or it is still too small.

 

[dpc]

I'm sure there was another brand of machine that had the same sort of issue. When running a hi flow attachment it was in the manual to only run it for a set time as it does generate quite a lot of heat.
The way i understand it is that most machinesa re plumbed pretty close to the same. The oil from the pump goes to the attachment, then back to the return line that pulls the oil back to the pump to the attachment. Not all the returning fluid goes through the oil cooler, some does, but not all. The heat builds up as not enough is being cooled and eventually it exceeds it's rated temperature.
This is from how i understand the oil path of the machines i have fiddled with that i have looked at the path of the oil to the cooler. It may not be the same on all machines though.
Could this be the issue?
Another thing to do may be hook a thermocouple to the oil cooler, see just how hot it gets. If it gets too hot, you aren't getting enough air through it or it is still too small.

Finally found out what was wrong with the SR175. The Case supplied high flow installation kit had the WRONG hydraulic pump supplied. This was after 2 engineers from Case UK came and viewed the machine and it left them scratching their heads. Our own engineer and after sales manager got the pump off and googled the manufacturer details on it and done a bit of detective work. I'll post the details later. Hard to believe after replacing the oil cooler, valves and retrofitting an external cooler fan that it has came down to this. Don't know if the wrong part was on the shelf or the wrong part number was lifted.

 

[Tazza]

Finally found out what was wrong with the SR175. The Case supplied high flow installation kit had the WRONG hydraulic pump supplied. This was after 2 engineers from Case UK came and viewed the machine and it left them scratching their heads. Our own engineer and after sales manager got the pump off and googled the manufacturer details on it and done a bit of detective work. I'll post the details later. Hard to believe after replacing the oil cooler, valves and retrofitting an external cooler fan that it has came down to this. Don't know if the wrong part was on the shelf or the wrong part number was lifted.

It is very odd, was the pump trying to put out too much fluid causing the heat build up?
I guess it's good to know the issue has been found, but it took a lot of detective work to get there!