Good afternoon All,
I have a John Deere 855 with a 70 series loader attachment and have been having issues with the lift function on the loader. the bucket cylinders work fine and will lift the tractor up off the ground but the lift side of the main lift cylinders will not lift at all only make a squeal noise from the valve bank. i did swap the quick lines around and the problem followed ( swap bucket for Lift arms) so that tells me it is isolated to the one valve. i took the valve body off and completely disassembled and cleaned. i replaced all of the o-rings with new ones and re installed on tractor. it did work properly for about 3 cycles now the same problem is back. could this be a bad spool valve or valve body?
I have a John Deere 855 with a 70 series loader attachment and have been having issues with the lift function on the loader. the bucket cylinders work fine and will lift the tractor up off the ground but the lift side of the main lift cylinders will not lift at all only make a squeal noise from the valve bank. i did swap the quick lines around and the problem followed ( swap bucket for Lift arms) so that tells me it is isolated to the one valve. i took the valve body off and completely disassembled and cleaned. i replaced all of the o-rings with new ones and re installed on tractor. it did work properly for about 3 cycles now the same problem is back. could this be a bad spool valve or valve body?
