![]() ![]() “My lift only comes up half way then stops.” Check the pump pressure as outlined in the I&T FO-4 manual. If no oil is spraying out anywhere, you could have a bad pump. Raise the lift control lever and watch inside the cavity for oil spraying out in the area of the relief valve or from the side of the cavity where the tube is located. Have a fairly heavy weight or load on the lift arms. To check these, leave the side cover off and start the tractor. Other possibilities are a defective relief valve or a ruptured oil tube that goes from the pump base to the top cover. Make sure the rod is connected and that it is moving the control valve spools in and out as you move the lift control lever up and down. If those two things check out ok turn off the engine and remove the right side access cover (the one with the dipstick) and slide your hand down along the control rod into the oil and feel the end of the rod where it goes into the control valve pivot. If the lift won’t raise at all, first make sure the pto is engaged and the pto shaft is turning as it should be. If the oil looks milky, it’s got water in it. You definitely don’t want that to happen. In cold climates the water can freeze and break the chambers in the pump. ![]() It has a tendency to accumulate moisture from condensation inside the gear cases and the water collects in the bottom of the sump where it is drawn directly into the hydraulic pump. The oil sump holds 5 gallons that is shared with the transmission and rear end of the tractor. It’s also highly recommended that you change the hydraulic oil (gear oil) and keep it fresh and clean at all times. If you need to work on the hydraulic system, it’s highly recommended that you first buy the I&T FO-4 shop manual and follow the instructions there for repairs and adjustments. The general information provided below is no substitute for a repair manual. The most common complaints are addressed below. The control lever and quadrant moves the valve spools on the pump to control the lift. It consists of a pto driven piston type pump with internal control valves and a lift cylinder connected to the rear lift arms. The 8N hydraulic system is simple yet elegant and works great when properly adjusted and maintained. “My hydraulic lift isn’t working right.” Answer: ![]()
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