B2710 Hot Hydraulic Fluid

[GhostRider29]

I noticed that my tractor hydraulic system is starting to get hot lately. I recently replaced the fluid, filters and cleaned the strainer. I also replaced all rubber suction hoses. I put in a new 0.2 mm shim and 2 washers in the relief valve as when I took the relief valve plug out, the previous washers and shim were worn out. I did all that because it was time to do it plus hoped to improve performance. When the hydraulic fluid gets hot, the FEL becomes weak and the tractor whines some when I drive it around with FEL bucket full of dirt. The joystick housing on the FEL becomes hot to touch. I checked the fluid level and its within the range. BTW I used UDT. Is it the hydraulic pump that is failing? Could it be the hoses on the FEL? I checked the strainer and there’s no metal shavings in it. Most of the time I had the engine at around 1,800-2,000 RPM when digging up, moving, and dumping the dirt until the tractor started to whine and FEL became weak. I tried increasing the engine to 2,400 RPM (PTO speed), the whining stopped when moving but still would whine seldomly when lifting the loaded bucket. The FEL moved slow.

 

[North Idaho Wolfman]

What you're explaining probably has nothing to do with use, it has to do with the system deadheading or overloading.

If all of this started when you changed the shims, I would be looking at that first!
Randomly replacing shims without measuring pressures as you do it is a really bad idea, you could be very easily be pushing the pump too hard and causing it to overload.

Another likely issue could due to the three point trying to keep raising the arms.
This is fixed with the adjusting the feed back linkage.

 

[TheOldHokie]

I put in a new 0.2 mm shim and 2 washers in the relief valve as when I took the relief valve plug out, the previous washers and shim were worn out. I did all that because it was time to do it plus hoped to improve performance.

You did not improve performance
Put it back the way it was.

Dan