Engine parts, lighting and trailer couplings are a few of the groups for the John Deere 4050. More than 250 parts for this 50 series tractor are listed here.
The John Deere 4050 has a loyal following among farmers who prefer to keep a proven tractor running. This page gathers more than 250 John Deere 4050 parts, made by GRANIT and by brands such as VICTOR REINZ, GRAMMER, HELLA and PROBOSS.
When a fan clutch no longer locks up, it shows itself as an engine that runs hot under heavy load while the radiator is clean. A quick check is to turn the fan blades yourself once the tractor has stood long enough to cool down. If it keeps turning with almost no resistance, or there is oil around the clutch, it is time for a new one.
When you replace an injection nozzle, always fit a new sealing ring underneath. A flattened old ring no longer seals, and combustion gases then blow past into the nozzle bore. After working on the fuel system, use the hand pump to bleed the system until clean, diesel without bubbles comes out at the bleed screws.
A blocked vent in the tank cap is an easy fault to miss. As fuel is drawn off, a vacuum builds in the tank and the feed pump struggles. The engine loses power after a while of work and recovers as soon as the cap is opened. A new vented tank cap cures it, and the lockable version also discourages diesel theft from the yard. For the valve gear, fit new bushes and shims together when the rocker shaft is apart, since worn bushes let the rockers tilt and wear the valve tips unevenly.
Check the type plate first to make sure you are working on a 4050. For gaskets, O-rings and thermostats, the part you remove is your best reference. Compare any reference number on it with the details on this page, and with a thermostat, note the opening temperature stamped on the old one.
John Deere placed the 4050 in its 50 series. The John Deere 1550 and the John Deere 1850 each have a separate page listing what fits those models. To browse the whole brand, use John Deere parts.
