D17 Hydraulic Problems

How does one change out that hose that is making the trans oil over flow into transmission. I did remove the breather steel ball. I own a D17 series III.

The goal is to remove the lift arm housing. Drain the hydraulic oil at the drain plug directly down from the foot clutch pedal. About 3 gallons. Drain the transmission by removing the plug directly down from the seat cushion and above the drawbar. Holds 5+ gallons. Both drain plugs take an 1 1/8" wrench. Remove the complete seat/seat suspension. Remove 3 bolts that hold the PTO shaft in place and pull the PTO shaft out. About 3 ft long. Disconnect any steel lines to the rear left of the seat and remove the hydraulic coupler manifold. Lift the manifold, clamp a wrench on the hydraulic hose and turn the manifold CCWise to disconnect the hose. Remove the drawbar and bail. Remove both drawbar bail hanger brackets. Remove 9 bolts from the lift arm housing and get the gasket glue to let go and pry it off. Weighs 150+ lbs. A small cherry picker can be your friend. Internal hydraulic lift arm cylinder rod will pull out of the barrel. Replace hose (5000 psi quality) AND the packing seals inside the barrel. Use lots of light grease when assembling the rod back into the new packing. When I was much younger I could do this in 4 to 6 hrs time.

Edited by DrAllis - 24 Sep 2024 at 8:07pm