Possible Cause Correction A. Spool detent dainaged. A. Repair or replace control valve. PROBLEM 20. Self-level position in valve is not operative. Possible Cause A. Malfunction of the lift cylinder rod-end circuit safety relief valve. PROBLEM 4. Sticky control valve spool. Possible Cause A. Foreign material in spool bore. Correction A. Disassemble the valve and clean the spool bore. PROBLEM 5. External leakage of the control valve. Possible Cause A. This can pose a challenge. Depending on how much snow you get, it will work O.K. to push snow. We used a 641 ford to plow snow with a rear blade-for 30 years- until I put a plow on my pickup. PROBLEM 16. Boom raises slowly and drops rapidly. Possible Cause A. Restrictor in the head-end of the lift cylinder circuit installed in reverse. Correction A. Remove the restrictor from the boom head-end port of the control valve and reinstall properly. On the drawbar 3 speed spur gear transmission Produced from at Dearborn in America Produced from at Cork, Ireland The Fordson Model F was rolled out in 1917 in limited production, and scaled up to mass production in 1918 to meet the urgent need for. Good luck! D. Remove suction hose and inspect for obstruction. E. Test the pump and, if the results indicate a worn or damaged pump, service as necessary. PROBLEM 2. Pump shaft seal leaking. Possible Cause A. Worn shaft seal. These other companies were operating under the mistaken belief that bigger is better. The smaller design of the Fordson allowed the tractor to be affordable and easy to produce. Especially important to that goal, the new Ford tractors lacked a conventional frame. Repair or replace special relief valve. PROBLEM 22. Bucket has insufficient dumping power. Possible Cause A. Malfunction of the primary self-level check valve. Correction A. Direct pressure to bucket cylinder head-end port with valve spool in neutral. FDS2869 Restoration Quality Wiring Harness Kit In Stock 255.80. Ford - Fits: 1801, 1811, 1821, 1841, 1871, 1881, 2000 4 cylinder, 2030, 2031, 2111, 2121, 2130, 2131, 4000 4 cylinder, 4031, 4040, 4120, 4121, 4131, 501, 541, 601, 611, 621, 631, 641, 651, 661, 671.