Unable to extend hydraulic cylinder with rear SCV on 5325

justwannafarm · Aug 27, 2013

I have a 5325 with two rear SCV outputs. I purchased a 42ton log splitter that mounts to the loader and run a hose to the rear of the tractor. The connectors on the splitter are flat faced skid steer type since that's what it was built for. I have put together a coupler using the flat face and some pioneer connectors from Farm & Fleet. I am able to extend and retract the cylinder just fine under no load. As soon as I put a log into the ram it will bit in about 1/4 inch and stop. Holding down the extend on the control in the cab does nothing. When retracting and I hit the limit I can tell by the pump whining, however in the extend under load it doesn't even whine.

Thoughts on what the problem might be? I believe my hoses are 3/8". Too long of a hose? Not large enough diameter? Couplers reducing flow? I'm not sure where to start. I did notice there is a very slight drip on one of the couplers so I plan to re-do them using teflon tape to see if it stops the leak. Since it's so small and doesn't spray under pressure I didn't think that was the issue.

Thanks

J_J · Aug 27, 2013

If you plugged into the PB outlet, you would have flow to the log splitter.

If you plugged into the FEL work ports, you have to bungee a spool open .

Have you installed a hyd gage in the IN port of the log splitter valve.

If your valves are connected in series, and the tank ports are connected correctly, you should have flow and pressure when splitting.

Tx Jim · Aug 27, 2013

justwannafarm
If I'm understanding you correctly you have the log splitter plugged into the rear breakaway coupler of the tractors scv. If sufficient hyd pressure isn't getting to splitter cylinder then I think the male/female quick couplers on rear of tractor are blocking the flow when cyl is under pressure. 3'8" hoses shouldn't be the problem.

J_J · Aug 27, 2013

I simply don't understand why more people don't have a hyd gage when working with hydraulics, and a plus would be a flow meter.

A hyd pressure test set runs about $30.

Flow meters $50 and up.

Tx Jim · Aug 27, 2013

I agree a gauge & flow meter cost about what 1 or 2 hrs on a dealer service call would be.

justwannafarm · Aug 27, 2013

Thanks guys. Ill try to skip the couplers and pickup a gauge and report back.

npalen · Aug 27, 2013

Did you try reversing the two hoses at the quick couplers (QD's)? You may be putting pressure into the "power beyond" on the splitter valve rather than the "P" or "IN" port. I found out mine were plumbed backwards after taking J-J's suggestion to put a pressure gauge on the IN port. Gauge read zero.

ddivinia · Aug 27, 2013

Yeah - swap the hoses. I know some of my gear require them to be put in the proper port.

D.

justwannafarm · Sep 4, 2013

Hey everyone thanks for your help. I finally got a chance to try it again after being out of town and a simple swap of the hoses did it. Went right through a log at idle speed and the tractor didn't even notice it. Glad it was so simple. I would never have thought there was a difference between the in and out port.