Third function disconnects ?

/ Third function disconnects ? #1  

Tigershark

Gold Member
Joined
Apr 11, 2017
Messages
265
Location
Shelby, KY
Tractor
KIOTI NX5510 Cab HST with Backhoe
I have an everything attachment grapple that came with summit Ff12M quick connectors on both the grapple hookups and the tractor. Something has gone wrong with the ones on the grapple and they no longer will connect to the tractor. I’ve tried everything snd they just won’t connect anymore even when completely off the grapple. I’m calling Summit Monday But I have a spare set of pioneer quick connects that I could swap out . Does anyone know if the pioneer will be sufficient for hydraulic flow For the grapple for a few days? I know the summit ones are what a lot of skid steers use just didn’t know if there would be any issue swapping them out for a short time. Just cut down 14 trees and need to use it and no local places carry the quick connects
thanks for any advice
 
/ Third function disconnects ? #2  
There could be pressure built up in the line. Cover the implement poppet with a rag and them smack it with a hammer to relieve pressure. Its messy but they will frequently connect after doing that. It might take a couple wacks, keep doing it till the fluid dribbles instead of sprays. Shut the tractor down, turn the key on and actuate the 3rd function a few times then try to connect. This should relieve pressure on the tractor and implement. With it being warmer now, there is thermal expansion of the hydraulic fluid and that can lock the hydraulic couplers up solid.
 
/ Third function disconnects ? #3  
Pressure build up in implements is a thing. Even a 10-15 degree temp rise can do it.
If you're not comfortable hitting things with hammers you can unscrew one of the quick connects to let the pressure out. Don't do it too often though as NPT threads seal by deforming.

I made a couple devices with two quick connects on a tee with a valve and cap. I plug it into my hydraulic implements when I take them off the tractor. Then let the pressure out when it's time to put it on again.
 
/ Third function disconnects ?
  • Thread Starter
#4  
The pressure was relieved I think something just broke as the two won’t lock anymore that’s why I am looking to switch it out. I have extra Pioneer fittings just don’t know if they can handle the high psi that a grapple demands, maybe they can I just don’t want to hurt something until the replacement summit fittings come in next week
 
/ Third function disconnects ? #5  
Flow won't matter on a grapple. It will function fine with the Pioneer fittings as long as they connect and flow. If you are concerned look up the number on the fittings you have for pressure and flow ratings.
 
/ Third function disconnects ? #6  
What high PSI? Your tractor only puts out 2500 more or less. Most hydraulic components are rated 3000 or more and you see a lot of double wire hoses in 1/2" size rated at 4000. Your main concern would be thread matching, not pressure or flow rate. NPTF and NPTS with a gasket are different mating mechanisms. Also, some straight threads with the sealing gasket (NPTS) for 1/2" connections are 3/4 x 14 (or 16 forget) and some are Metric 18 or 20 mm x 1.5.
 
/ Third function disconnects ? #7  
I have the pioneer type on my 60" wicked grapple. No problems at all.
 
/ Third function disconnects ?
  • Thread Starter
#8  
Thanks everyone for the info. I am one male connector short on my inventory so I’ll have to contact Summit tomorrow and see if they can send me a new set. They make ones that can be released snd inserted under pressure now for 10$ more I’ll probably go with those. Can’t believe no one has a regular pioneer rural king and tractor supply are both out :mad: I guess covid is the reason supply urg. Was hoping to get it done today but will have to wait. I would borrow a set from another implement but ran out of things to cap those so they don’t leak everywhere Thanks again for confirming I didn’t need a high flow and regular one will work.
 
/ Third function disconnects ? #9  
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/ Third function disconnects ? #10  
/ Third function disconnects ? #11  
I got Faster multi port couplings for both my loader and the third function implements. I can literally disconnect my loader hydraulics, disconnect the loader, back away and reattach it in less than 3 minutes, and that is with 6 hydraulic lines to the loader. They are in an 8 port coupler. There is a two port out front on the loader for implements.
I saw them as an option from Kubota and ordered them with my tractor. The dealer had never seen them before, but have sold many subsequently.

 
/ Third function disconnects ? #12  
I almost got that multi port option on my new Kubota L6060. It would indeed be a quick & convenient way to connect the hydraulics. I changed my mind though when I found out what it was going to cost to convert 2 tractors and 4 implements!
 
/ Third function disconnects ? #13  
Mine is an L6060 as well. Considering the price of the tractor, I figured the $900 cost of the quick connect would be lost in the noise. It cost under $200 for the half that goes on the implement, and I’ve “only” got 3 SSQA implants that have hydraulics.
Every time I mount an implement or pop the loader on or off I’m reminded that it was money well spent.
 
/ Third function disconnects ? #14  
By using the Pioneer 4200 couplers with the appropriate mount that grabs the sleeve the couplers are a push / pull setup. Push them to install, and pull them to release. I always recomend to customers to spend the very little more to get these. Also if mounted inline with the machine, should the hose catch something, or the implement become unattached, they will automatically disconnect, rather than wreck something. With the 4200 you do not need a special tool to hold the sleeve while attaching the coupler, just push the hose in. However that does not mean they will always attach when you have pressure due to thermal expansion. Sometimes you still have to wack the male end with a hammer, or I hit them against the drawbar on the tractor to relieve pressure. I have seen tools to relieve pressure, that do it cleaner than hitting the hose end.
 
/ Third function disconnects ?
  • Thread Starter
#15  
I'm going with the pioneers just can't break loose the adapter that goes from 1/2 to 3/8s, tried with the vice and hammer with a 7/8 wrench but was unsuccessful I could have broken the table that the vice was mounted on so I think I'll try and find a set of 3/8s so I don't have to buy new adaptors
 
/ Third function disconnects ? #16  
A hydraulic 3/8-1/2" adapter is under $2.

3/8 quick connects will flow enough but if you ever plan to use something else, 1/2" is the most common. The 3/8 QCs cost a little more and are a bit harder to find. I can get 1/2" 4200s at the local TSC.

Use LocTite 545 on the threads.
 
/ Third function disconnects ? #17  
I had this problem with the Summit third function quick disconnects and the 1/2” quick disconnects I asked Everything Attachments grapple to supply. The Summit ones are a pin type center and the EE ones were ball bearing. I took the model numbers from EE and went to farmers supply. Put that type on the Summit supply lines. Look in the center of the quick disconnects and you should see the difference. I’m not a pipe fitter so that the best I can explain.
 

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/ Third function disconnects ? #18  
You actually only have to buy the male quick connect if you got a male and female coupler from Summit. As you match those two up and the use the one you took off and match up that side. Better to stick with a standard for future though.
 
/ Third function disconnects ? #19  
Is it possible the pressure is in the grapple, not the machine? That is the common problem I had.
I tried to swap to the "connect under pressure", but those aren't interchangeable with normal flat face, and I couldn't find "CUP" style that would mount on my Dingo bulkhead...had to swap back, but Summit was a real help. Saw an idea where you take a set of couplers, attach them on each end of a short pipe nipple. The air in the nipple relives the hydraulic pressure while the attachment is sitting in the sun.
 
/ Third function disconnects ? #20  
I put a shut off valve on one of the grapple hoses, was more to leave the grapple ‘open’ when not in use (bad practice I know) and not have the weight of the grapple putting pressure on the oil in the line to cause connection problems.. but it helps for the heat buildup pressure issues too. One on each line (right at the coupler) would be ideal. Just another thought.
 

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