860 hyd problens

mj56

New User
lift arms wont lift rebuilt hyd pump took out plug on pump getting oil through that hole took the plug out of the 3x5 option plate not getting any oil out of that hole does any body have any suggestions what to do next
 
There is a relief valve in the bottom that is accesible by removing a plate. Then one in the vicinity of the plate you mention and one that requires pulling the rockshaft housing if my memory is any good. I am chasing the same problem on my 860 and already did the one at the bottom on a recommendation by a dealer mechanic. It seems those tractors don't like sitting not run for several months. Live and learn I guess.
 
"getting oil through that hole" Run a hose from this hole to the fill plug (under you seat) of the hydraulic reservoir. until all air bubbles are gone.
 
(quoted from post at 23:22:49 03/14/18) There is a relief valve in the bottom that is accesible by removing a plate. Then one in the vicinity of the plate you mention and one that requires pulling the rockshaft housing if my memory is any good. I am chasing the same problem on my 860 and already did the one at the bottom on a recommendation by a dealer mechanic. It seems those tractors don't like sitting not run for several months. Live and learn I guess.
nly two relief valves & neither the likely cause of his problem... If not loss of prime, the best suspect is the regularly troublesome unloader valve, especially when tractor is unused for long periods.
 

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