Ford 4550, 550, 655A, 555B Hydraulic Pump Cessna D1NN600C, D1NN600B, 87607369. Description for the Item. Hydraulic Pump Cessna On 4550 Good. D1NN600C, D1NN600B, 87607369, 2809592, 24500. INDUSTRIAL DIGGERS AND TRACTORS. Tractor & Plant Breaker. With Over 250 Tractors & Plant for breaking. Many parts available second hand for Ford, New Holland, John Deere, Massey Ferguson, …