hydraulic problem 4100

[Captn_Dave]

Hydraulics for the FEL work fine in the tilt and lower... but lifting has no power and chatters. Oil level seems fine.
Problem started after doing some heavy lifting and digging. Initially I thought it was oil foaming.... because problem went away after allowing tractor to rest/cool. However now the problem is persistant. Any ideas?

 

[Cliff_Johns]

First thing to try is to pop off the quick connects and put them back on. See if that solves the problem, it usually does.

 

[jrwattsjr]

Place a gauge in the loader port and deadhead the valve on the gauge port, and you should have 2500 psig. If you do not the system relief or the pump has failed. To test the pump you need flow meter and gauges so take it to your dealer they will have them. The other test for cylinder piston leakage is to raise the loader and uncouple the hoses and remove rod end of the cylinder one at a time and see if the loader come down (block loader up while removing rod end of cylinder)You have to do one cylinder at a time because one cylinder could be good and the other bad and the loader will work fine but have only half the power. The other way to test cylinder is to block one port and pressurize the other, the cylinder should move very little. If it moves the piston seals are bad.