Problem Connecting Hydraulic Hoses: Loaders  -- Tractor Attachments Implements 3ph Discussion Forum and Review Problem Connecting Hydraulic Hoses: Loaders -- Tractor Attachments Implements 3ph Discussion Forum

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 05-24-2000, 20:50 Post: 16612
Tech



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 Problem Connecting Hydraulic Hoses

I sometimes have a problem reattaching the hydraulic lines on my loader after having removed it for mowing. One or two of the lines will go on very hard, it feels like there is pressure in the line. At times, I have all I can do to get them back on. What causes this? Is it due to leaving the loader in the wrong position on the ground? If it happens, how can I make them easier to reattach?






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 05-24-2000, 21:14 Post: 16616
tom



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 Problem Connecting Hydraulic Hoses

You did not say what brand of tractor or loader, but I can tell you that I have a NH TC33D with a NH7398 loader and have noticed the same thing some times. I can simply move the control stick on the tractor with the engine off in the loader up/down direction and the bucket up/down position and it relieves any pressure in the lines on the tractor. The hoses then connect with no problem.






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 05-24-2000, 21:15 Post: 16617
tom



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 Problem Connecting Hydraulic Hoses

Oops, NH7308 loader.






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 05-24-2000, 22:12 Post: 16621
Bird Senter

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 Problem Connecting Hydraulic Hoses

Tom, I can't say for sure, but I think the same thing (moving the joystick around to relieve the pressure) works on all of them.






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 05-24-2000, 23:18 Post: 16624
Tech



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 Problem Connecting Hydraulic Hoses

tom...I have a NH TC29D with 7308 loader. I'll try your suggestion. Sounds like a simple solution.






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 05-25-2000, 04:31 Post: 16628
TomG

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 Problem Connecting Hydraulic Hoses

Sometimes I can't get a connector in even after relieving the pressure with the spooling valves. I think the oil remaining in the connector body can be enough to prevent seating, but it doesn't always happen. I found that the hose seats easily if I pull the lever while pushing on the hose.






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 05-25-2000, 05:43 Post: 16630
Bird Senter

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 Problem Connecting Hydraulic Hoses

And like Tom said to start with, just be sure the engine is OFF when you do it.






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 05-25-2000, 07:05 Post: 16632
David Paul



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 Problem Connecting Hydraulic Hoses

Any pressure build up on either side of a quick disconnect hydraulic fitting will make it almost impossible to reconnect. Sometimes cracking the quick disconnect loose from a hose is the only way. When the loader is detached, shut the tractor off and move the loader controls for lift and bucket in all directions to relieve pressure on all lines before disconnection. This will remove pressure on the loader side of the fittings. Make sure the loader is firmly parked and will not move once it is disconnected. If it moves after disconnection considerable pressure can be built up in the lines making them difficult to connect. The suggestions about cycling the loader control on the tractor prior to reconnection is a very good idea also.






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 05-25-2000, 23:55 Post: 16663
Richard Harburn



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 Problem Connecting Hydraulic Hoses

I have had this problem with my Steiner. Even though I always put the spool valve into "float" position when letting the implement down, there is sometimes a problem inserting the male end of the quick connect into the female side. You are right in saying that they can not be forced together. The problem is not on the tractor side but rather with the implement. The hoses in the attachment are charged with hyd. fluid and this is just like a solid rod - it cannot be compressed and the fluid is keeping the quick connect from going together. Wrap a rag around the male end of the hose and push against something solid. The end will retract and release a small amount of hyd. fluid and the pressure in the line. You only need to do this to one of the ends. The couplings will then snap together easily. At least this is how I solve the problem on my machine.






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 05-26-2000, 10:31 Post: 16671
Jack in IL



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 Problem Connecting Hydraulic Hoses

Some conditions that can cause the implement side hoses to become hard to attach because they are pressurized are: (1) a significant temperature change from the time the implement was disconnected until trying to reattach it, and (2) the implememt "settles" while disconnected due to internal leakage in hydraulic cylinders. In extreme cases, you may need to slightly loosen the coupler from the hose with wrenches to let some oil out and releave the pressure.






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