This unit was replaced five years earlier, it was a rebuild unit from an aftermarket supplier. In the process or the rebuild I found the O-ring at the bottom of the gland for the piston rod was missing. This was the first run up since I rebuilt the steering cylinder, prior to rebuilding the temperature rise was much higner. On these tractors, the transmission pump supplies lube oil to transmission, pressure oil to pto clutch and hi-lo if equipped, and all the left over oil supplies main hydraulic pump with oil for steering, three point and scv operation. If nothing heats up, then you have a problem on the low pressure side of the system - transmission pump worn, filter relief valve stuck open, broken or cracked internal oil lines, or leak in pto clutch or brake. Any item that is warm or hot to the touch has an internal high pressure leak that is robbing the hydraulic system of oil. The three point housing would heat up on right front corner, under your right leg as you sit in the seat. Then feel the steering valve/column, three point hitch housing and rear scv valve housing for heat. First, try starting the tractor and leave it run at 1200 to 1500 rpm for maybe 10 - 15 minutes without touching steering wheel or any hydraulic functions. That serial number definitely has closed center hydraulics.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |