Dumb Question

ScottNC

Member
If the engine is running can the hydraulic lines dry break couplings to the front end loader be unconnected and reconnected?

Tractor is being balky about starting [i:8f7a716f01]again[/i:8f7a716f01] or I'd go figure this out for myself. The reason for wanting to leave the tractor running is the confounded occasional hard starting.
 
Any time I hook up to my NH850 baler I have the tractor running and hook and or unhook the hyd couplers so yes you can hook or unhook then couplers with the engine running
 
If the couplers are between the valve and cylinders, yes. If the couplers are between the pump and valve, no.
 
If I want to connect an implement to my tractors the engine has to be off and the levers cycled to relieve any pressure. I use both types of Pioneer
couplers and it doesn't make any difference. Sometimes the implement has more pressure on a line that it had when disconnected, like sun shining on
things to heat up the fluid. At times I have had to unscrew the connector on the implement to relieve the pressure.
 
Pretty much same for me here in Ohio, exception was with tractors with PTO driven hydrolicks that when PTO out of gear pump stoped.
 
The correct answer for me because of the way the loader is plumbed is that the engine needs to be shut down. After talking to ArleninOr, the engine not starting seemingly whenever it's near the loader is because I didn't loop and hook the hydraulic lines together on the tractor. I had told the wife, "that tractor is allergic to the loader". Evidently the hydraulic pump dead-heads and pump load on the starter is enough it can't turn the engine fast enough to start. Arlen cautioned me to not run the engine without hooking the lines together or the pump would be damaged.
 
If its like an Oliver 1550 or 1650 the engine needs to be shut off and most times the pressure relieved on the tractor lines.Power beyond needs to be hooked to an open center valve or piped so the pressure line can dump back in the pump housing.
 
I do that all the time on our JD 4600, when hooking up my wood splitter, which runs off the loader valve. I disconnect the
loader with the bucket about 8 inches off the ground, when I want to reconnect the loader I tilt the bucket down to lift the
loader and relieve the pressure on the main cylinders.
 

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