2005 Toolcat 5600 Hydraulic fluid getting very hot with attachment use???

[699skidoo]

Hey guys

I have a 2005 Toolcat5600 with high flow. I have a bobcat brushcat (twin motor) attachment that when I use it after about the first 30 minutes it loses power. The hydraulic fittings are super hot to the touch. I also have a bobcat snowblower attachment and when I use that (in the cold weather of course) no significant lose of power and the fittings are cool to the touch. I have made sure the cooler/radiator is clear of dirt and obstructions. The temp gauge of the unit itself is always running cool and normal with whichever attachment I'm using. What would be causing the loss of power on the brushcat and very hot Hydraulic fluid versus in the winter with no issues on the snowblower? Anyone else experience this issue?

 

[5030]

How hot is too hot? You need to check the temp with an IR thermometer not by feel. Feel means nothing. Most hydraulic fluid is good to 200 degrees plus.

 

[699skidoo]

How hot is too hot? You need to check the temp with an IR thermometer not by feel. Feel means nothing. Most hydraulic fluid is good to 200 degrees plus.

I will check that next time I use it. Good idea I have an IR thermometer. I am assuming the fluid is getting too hot though, since I lose power with the brush cutter. No power loss with the snowblower and fittings are cool to the touch???

 

[ruffdog]

A thread I saw....

763F overheating aux hydro

 

[laurencen]

check the radiator is not full of dust and cuttings, when mowing mine gets lots od debris and needs washing out regulary

 

[699skidoo]

check the radiator is not full of dust and cuttings, when mowing mine gets lots od debris and needs washing out regulary

I believe I have eliminated that as the cause and have cleaned it very well.

 

[ruffdog]

check the radiator is not full of dust and cuttings, when mowing mine gets lots od debris and needs washing out regulary

Agree...to check to see if the radiator is clear, shine a light through the fin area. It should be very clean of dust buildup that would block airflow. Be sure to look at the corner areas too. The 5600 is more prone to dust in the cooler as it hangs much closer to the ground than the 5610 model. Is your fan turning on once it warms up (about 5-10 min)? I do notice the fittings get a bit warm on my finish mower on hot days too.

 

[699skidoo]

Agree...to check to see if the radiator is clear, shine a light through the fin area. It should be very clean of dust buildup that would block airflow. Be sure to look at the corner areas too. The 5600 is more prone to dust in the cooler as it hangs much closer to the ground than the 5610 model. Is your fan turning on once it warms up (about 5-10 min)? I do notice the fittings get a bit warm on my finish mower on hot days too.

I will double check with a light. I believe the fan is working as it should it does come on and my temp gauge never gets super hot. If the radiator was clogged wouldn't my gauge on the dash indicate its overheating?

 

[ruffdog]

I will double check with a light. I believe the fan is working as it should it does come on and my temp gauge never gets super hot. If the radiator was clogged wouldn't my gauge on the dash indicate its overheating?

You have a point but it is worth checking anyways.

 

[laurencen]

after using the bush mower or the finish mower I clean the radiator with water, sometimes its clear tohers its got a light covering, even with 50% clogged it will likely still run withing range but its not cooling as it should, also if cutting grass check the radiator for the AC on the side, that crap gets into everywhere air is flowing

 

[albert]

after using the bush mower or the finish mower I clean the radiator with water, sometimes its clear tohers its got a light covering, even with 50% clogged it will likely still run withing range but its not cooling as it should, also if cutting grass check the radiator for the AC on the side, that crap gets into everywhere air is flowing

 

[albert]

Just to offer my own experience...I used to clean the radiator area out with water and started having an overheating problem. Found that under the radiator fins, the dust + grass + water had set up as a hard cast which was blocking flow. Once I got it cleaned out, I stopped flushing the area out with water and started blowing the area out with compressed air. Haven't had a problem since (15+ years).

 

[gander71]

Hey guys

I have a 2005 Toolcat5600 with high flow. I have a bobcat brushcat (twin motor) attachment that when I use it after about the first 30 minutes it loses power. The hydraulic fittings are super hot to the touch. I also have a bobcat snowblower attachment and when I use that (in the cold weather of course) no significant lose of power and the fittings are cool to the touch. I have made sure the cooler/radiator is clear of dirt and obstructions. The temp gauge of the unit itself is always running cool and normal with whichever attachment I'm using. What would be causing the loss of power on the brushcat and very hot Hydraulic fluid versus in the winter with no issues on the snowblower? Anyone else experience this issue?

I would get the serial numbers from your drive motors and have your dealer check to see if they fall into the range that Bobcat had known failures. Happened on my 2004. I put kits in each drive motor and the symptoms went away. Oil was getting hot because of extra circulation through worn drive motors.
My snow blower wouldn't perform as well after the half hour in the winter either. Also a bit off on MPH in rabbit mode. Just gradually got worse until drive motors were fixed. Good Luck!

 

[MapleLeafFarmer]

FWIW.... I had a similar problem with a high flow water pump. I couldn't seem to find why but everything else was 100% so I took the solution of adding an external universal hydraulic oil cooler. Cheap and easy addition to that one impliment that just seemed to be creating a bigger than wanted strain on my tractors pump.

 

[699skidoo]

I would get the serial numbers from your drive motors and have your dealer check to see if they fall into the range that Bobcat had known failures. Happened on my 2004. I put kits in each drive motor and the symptoms went away. Oil was getting hot because of extra circulation through worn drive motors.
My snow blower wouldn't perform as well after the half hour in the winter either. Also a bit off on MPH in rabbit mode. Just gradually got worse until drive motors were fixed. Good Luck!

Where do I find the serial numbers of the drive motors? What kits did you put in them and did you do it yourself or the dealer did the work?