John deere Chris
New member
Hi I have a 1980 john deere 300b backhoe/loader. The hydraulics only work at full rpm and are somewhat slow.....I was told the pump sounded good. I am lost and need some help figuring out why the hydraulics are acting up. This is not just the loader, it is the backhoe and power steering. Once the engin is revved up, there is a delay in the movement of the loader. Then they begin to squeak up. As long as the rpms are at its full the controls work. Once the engin is returned to an idle, for about 5 minutes the hydraulic operations will work as should. Then slowly stop working. I changed all filters, drained hydraulic oil and cleaned the transmition screen which was coverd with black junk. Please help me! Thanks