Hagen Brothers farms,Goodrich ND | The original seals between the scv body and ISO cartridge were not a quad ring in my 4020 ISO conversion kit ,they were a square ring with an internal lip type seal ,like a conventional shaft oil seal that used system pressure to seal the lip to the cartridge,no little spring like an oil seal. Problem was that when the tractor was parked and hyd pressure went to 0,the seal lip relaxed and drained all the oil in the scv and lines down the back of the tractor. I replaced them with conventional O rings which made the cartridge harder to slide in the body,but don't leak any oil when the system has no pressure. Do the new kits have a true quad ring? If so,they may make an easy sliding ISO cartridge ring that seals without pressure. |
Rebuilding Deere 40-series SCV's - how difficult?
