Correct on the 1855. Closed center hydraulics with the pump on the side. The 1850 pump is internal open center like the 1655. The pump doesn't run directly off a gear on the PTO shaft in the 1850. The shaft runs through a helical gear that permanently mounted in it's own bearings. There's a gear mounted on it's own bearings in the transmission cover,then there's a short shaft above the PTO shaft that has a larger helical gear on it. That shaft runs in needle bearings in the housing,front and rear. All there is,is a big cotter pin that holds that gear to the shaft so the shaft turns in the bearings and the gear doesn't spin on the shaft. That gear runs the pump drive gear off the PTO shaft gear. I thought what had happened was that the cotter pin had broken or come out somehow and the shaft slid out of the gear on mine,but that wasn't it. The White 2-85 and 2-105s used the 1855 transmission and rear end with the better brakes and the closed center hydraulics,but they went back to the 354 Perkins engine. The best of both worlds. The difference between the two was that the 2-105 had a turbo.
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Today's Featured Article - Roof Palomino - Tractor or Jeep? - by Steve Nelson. My father-in-law purchased this jeep-like lawn mower back in 1968. He says he paid $1600.00 for it, which was big bucks back then for a mower. My own father bought a VW bug the same year for the same price. Well it
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