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Hydraulic Cylinder Issue

C

cm9

Member
We bought an IH56 planter towards the end of last summer and We has to take the press wheels off to put it in the trailer and the people we bought from has lowered the planter all the way before we put it on the trailer. I was getting it ready on Saturday hooked the hydraulic line to my tractor and raised it with no issue. Tractor is a Case 730 Comfort King and the cylinder is a single acting cylinder.I had to disconnect the line and now I cannot get it to connect back together. I tried bleeding some fluid off of the cylinder Saturday and then again yesterday but nothing works. Anyone have any ideas? Thanks.
 
Jack up the planter to take the pressure of the cylinder completely. Shut tractor off and move lever back and forth. Then hook back up and start tractyand you will
Be good to go. There can be NO pressure in the line from the planter or almost none with some tractors. Case is bad for that. I have got in the ha it of using the stops on all equipment that has it to shut tractor off and neutralize hyd before unhooking and have no troubles like that any more
 
Pressure in planter line. I'd try shutting off tractor, putting hydraulic lever in release or down position and then have lots of pushing power trying to reconnect. Or do this with jack lifting on planter to take weight off cylinder. If this doesn't work back hydraulic line loose from cylinder just enough to let oil leak until planter is down.
 
You cannot hook up any cylinder with it holding up weight, Jacj up to as far as you can and try with tractor shut off. In future DO NOT unhook any cylinder line with weight on it, and always use the built it transport of the inplement when ever you leave it set or transport it but after you hook up that transport turn tractor off and release all pressure holding implement up before you pull the hose and if you do that while things are cold and then you get a hot day with hot sun on cylinder it will still build up pressure. Now some tractors you can hook up with that much pressure but I don't know your tractor. So if you cannot get it to hook up you will have to loosen the hose just enough for a seep of oil to releave that pressure (DO NOT LET HOSE COME COMPLETELY OFF OR YOU WILL HAVE A BIG OIL BATH) and when it stops seeping oil retighten and then try hooking up with all pressure in tractor released.
 
Oil in the line is under pressure, for every degree increase in temp. the oil pressure in line or cylinder is increased by 90PSI. Stucchi makes a coupler that allows line to be connected under pressure. (4000 PSI) cost is just a little more than cheap couplers at local farm store. Well worth the money
 
Thank you all for your replies... I feel like such an idiot. For unhooking it while it?s under pressure.
 
Be careful when bleeding off the pressure,if you back off the fitting too much and your hands in the wrong place you can get ?injected? with hydraulic oil.not likely but possible.hydraulic oil in your blood stream can kill you.saw a picture of a guy that was holding a grease gun hose that ruptured while under pressure.a shot of grease went into his hand.
 
Checkout Bolingmachine.com they sell a pressure unlocking tool, one for Pioneer fittings and one for skid loader fittings. The tool bleeds pressure off male or female fittings. I seen them in Farm Show Mag., and ordered both. They are GREAT. You can bleed off pressure slowly without making a mess, damaging, or unscrewing fittings
 
Cheapest way is to put a piece of angle iron over the shaft. Fitting between the fork and body of cylinder then release pressure This will save the oil from leaking out a lot and it will allow you to connect the hose up. Then just raise planter and remove iron. only needs to be a 1/4 inch shorter than the shaft is sticking out. Yes they make cylinder stops out of angle iorn for this job by manufacturers. They do make them a bit prettier though.
 
When we got first cylinder it did not have the break away coupler that shut off oil flow but it could be unhooked under pressure. Dad not thinking about it as gust got it unhooked the hoses to cylinder on combine and both him and barn door got a bath of oil. As well as the tractor. Unscrewing the hose completely will give you that same bath.
 
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