Hydraulic conecter hard

[coupman35]

Today I remove the loader bucket off my b2650.Coming of was not bad the fitting or connecter where hard to disconnect but when I try to reconect then back together it was just about impossible. Is they a easy way to get them back in whit out any trouble .The next door guy to me to let some oil out. any tips on this he also said the Kubota fitting are the hardest one to get in .

 

[moship]

Did you try bleeding off some fluid by loosening the connector like your neighbor suggested? It's not uncommon to have to do this.

FYI... Kubota doesn't make the connectors and they are likely the same found on many machines.

 

[coupman35]

yes I did but will I have to do that all the time I take the loader bucket off

 

[Wagtail]

yes I did but will I have to do that all the time I take the loader bucket off

Yep. Any time you want to connect AND disconnect, switch the tractor OFF. Then bleed the hydraulic lines by operating the joystick in all four directions [Note: if you have a 3rd function, also depress the 3rd function joystick button/switch and operate the joystick in the open/close directions]. Doing this might seem like a pain in the arse (and it is) but, unless you've got quick-release/attach couplers, it's the only way to go... especially if you want to avoid cursing a blue streak so foul that mothers will be hiding their children within a 3 kilometre radius.*

*Ask me how I know this. :laughing:

 

[Aquamoose]

It pays to connect the lines of the implements to itself when it’s off the tractor. This keeps the connectors clean too. I just connected my grapple today. When I went through my motions to put the grapple on, I latched it on then I literally moved the lid by hand so it would rest open, face down before I decoupled the hoses on the grapple and connected it to the tractor. No problem doing that.

 

[Wagtail]

It pays to connect the lines of the implements to itself when it’s off the tractor. This keeps the connectors clean too. I just connected my grapple today. When I went through my motions to put the grapple on, I latched it on then I literally moved the lid by hand so it would rest open, face down before I decoupled the hoses on the grapple and connected it to the tractor. No problem doing that.

It took me a few moments to understand what you were talking about... your implement lines are male/female, with corresponding male/female connections on the FEL.

My FEL has 2x female connections (plugs when not in use) and my 4in1 bucket has 2x male end lines (kept in a small plastic 'ice cream' bucket when not in use). I distinguish between the two by using a tie-wrap (zip-tie?) on one 'set'.

 

[bdhsfz6]

This topic is often discussed here at TBN. Some good ideas were posted in these threads:

http://www.tractorbynet.com/forums/...tors-better.html?highlight=flat+face+couplers

http://www.tractorbynet.com/forums/...-connectors.html?highlight=flat+face+couplers

http://www.tractorbynet.com/forums/...ck-connects.html?highlight=flat+face+couplers

You'll find many more if you do a search.

 

[Wilco]

Different tractor but same process
. Removing and Installing a Kioti Tractor Loader - CK3510 SE CAB - YouTube

 

[diesel85]

My trick is to keep the joystick in float position.

 

[dodge man]

Did you do it in the sun or some other place with a temperature change? I did mine in the sun once. Just about impossible to hook back up. My wife gave me the idea to run the water from the hose over it, which worked.

 

[coupman35]

My trick is to keep the joystick in float position.

I will try that next time.Thanks for all your info guy

 

[sdef]

As others have mentioned, a standard problem with temperature changes and fluid/pressure expansion in the lines during storage. This is what fixed my problem with reinstalling the fittings after implement storage. Simply attach mating connectors to PVC caps that have a tiny hole drilled in them to relieve any pressure build up. Adding a small rag in the caps before assembly can help with fluid seepage, if any.



As far as removing/reinstalling fittings during usage, as mentioned, just move the hydraulic control handle(s) to bleed pressure while the engine is not running.

Also: How To Depressurize Your Hydraulic System On Your Attachments For Easy Reconnect - YouTube

They also make QDs that can be connected/disconnected under some amount of moderate pressure, which I have added to my hydraulics, but I do not recall the type.

 

[Grandad4]

Several posters mention to shut the engine off, then cycle the loader controls, then disconnect the hoses before you take the loader off the tractor. This relieves any pressure in the lines that will make it hard to connect. For the same reason, park the bucket with the bottom flat on the ground, or vertical to the ground. If you leave it cocked at an angle, it will continue to put a bit of pressure on the cylinders.

Nothing unique about those Kubota connectors. There are more expensive types of fittings used on larger equipment, but those fittings on yours are typical of nearly all small tractors.

 

[CobyRupert]

At the tractor side: As been stated: Wiggle the control levers (place into float, etc..) on the tractor to neutralize pressure, before disconnecting and connecting.

Also:

At the implement or loader prior to connecting lines:
Before connecting hydraulic lines, that may have pressure built up in them because of gravity or sun/heat: take the line and depress the ball of the connector against some clean metal so that (a tiny bit of) oil and all the of pressure is released. You may want to wrap the hose end in a rag when you do this.

(Note: Caution if the line/ hydraulics are actually holding a piece of equipment up in the air. Not only will there be a lot of pressure in the line, but if you release this pressure by depressing the ball at the connector, the equipment will come crashing down.)

 

[rprecision]

One way to think about is this: the QD valves are check valves when disconnected. As such they allow pressure to build behind them because they prevent the fluid from leaking out.

If you keep how they work in mind then everything described above makes sense from bleeding the tractor side with the loader control to bleeding the loader.

It's the price we pay for QD...........

 

[Baby Grand]

One trick that has helped me is to throw a tarp over the FEL when it's off the tractor to keep the sun from baking (and pressurizing) the hydraulic oil.
If it's still fighting me I reach for a 4" scrap of round stock, a wrench and a rag that I keep in the toolbox for tapping the "nib" in the connector, as CobyR described.