Trick to keep quick connections locked together?

[4570Man]

If you crash your Lamborghini into a pole on day two of ownership,, is it the dealers fault?
This was an accident,, and possibly caused by the person who installed the backhoe.

Improper routing of the hose may have caused this,, much like routing the car into the pole.

I was going to say if a tire blew and beat the side off your 2 day old pickup but agreed it’s not a warranty problem. If he has insurance he could take it up with them.

 

[Snowlan]

Most likely immediate failure will be at the oring and easiest fix, if screws were bent it's probably going to be more significant though.

So I'm not sure how a three hose system works, with a two hose there is built in bypasses on most so you don't over pressure the system. If you need a third hose for return fluid then it's going straight back to the tank? If that's the case I guess it could potentially get knocked loose because it would only have pressure when there is flow but I'd still find it hard to believe it could get freed as you described.

Also sounds like your dealer needs a boot upside his head.

When properly seated it doesn’t take that much force to hold an oring in place because surface area is small. Once pressure blew past the oring that provided a great deal of surface area inside the cap which was not designed for that force and snapped the tabs off the cap (my hope/interpretation any way).

Yes the third hose goes direct to tank (connected at the loader return direct to tank fitting).

Now that a helpful person pointed out the oring I’m hopeful that gives enough probable cause for the salesman to get service/warranty on side and have left a message.

 

[Snowlan]

If you crash your Lamborghini into a pole on day two of ownership,, is it the dealers fault?
This was an accident,, and possibly caused by the person who installed the backhoe.

Improper routing of the hose may have caused this,, much like routing the car into the pole.

I’m a chief engineer on a ship and admit to taking this cynical outlook every time something gets broken on board. Unfortunately I feel dumb as a post for letting this happen and trying to look for a positive way out.

 

[LD1]

I’m a chief engineer on a ship and admit to taking this cynical outlook every time something gets broken on board. Unfortunately I feel dumb as a post for letting this happen and trying to look for a positive way out.

IT just seems like a perfect storm that the coupler was laying just right on the edge of something that it released.

I know you say they are "easy" and shouldnt be that "easy" to release.....but if they made the spring in the sleeve any tougher and made them harder to uncouple....people would be complaining about that.

But quite simply....once connected they will NOT come apart unless SOMETHING moves the sleeve. In your case that happened to not be you that moved the sleeve, and it happened when you didnt want it too.

But there is no easy answer to your question of how to keep them together. Because they are designed to be quick and convenient to swap. So ANYTHING you do to prevent this from happening again....makes them LESS quick and convenient to remove. Like wrapping them with tape.....or a hose clamp tightened behind the collar so it cant slide, or zip ties, baler wire, etc etc. There are several things you "can" do. Its up to you as to the level of difficulty and inconvenience you want to go through whenever you remove them.

 

[Leejohn]

What size coupler is it? I have 1 or 2 that the collar has to be in just the right spot to unhook. I think the ones I have are 3/8. I well look tomorrow and post it.

Couldn't wait just had go check them out. What I have are 3/8".
Made by Hansen mfg co. series 3-hk.

 

[WranglerX]

Once you get it all together check pressure setting of relief valve.... Housing should have never blow if relief valve operated properly even with tank line blocked.... Coupler probable problem was that it was never seated and locked correctly from day one....

If its still under warranty.... "Hello dealer we have a problem"....

 

[TMGT]

Once you get it all together check pressure setting of relief valve.... Housing should have never blow if relief valve operated properly even with tank line blocked.... Coupler probable problem was that it was never seated and locked correctly from day one....

If its still under warranty.... "Hello dealer we have a problem"....

A blocked tank line can damage a valve block. The area where the tank line connects to is not designed to take full system pressure, typically they are only rated to a couple hundred PSI. The relief setting wouldn't have any effect on it.
The coupler doesn't have any pressure on it so bumping against something, such as the pto shield in this case, could easily release the QC.

 

[LD1]

It never ceases to amaze me the bad info related to hydraulics that gets posted on these forums

 

[WranglerX]

It never ceases to amaze me the bad info related to hydraulics that gets posted on these forums

OK enlighten me, I admin that my thinking the pressure relief valve would have protected valve body was wrong, BUT for the fact the relief path was probably through tank port which is blocked by closed (disconnected) QC....

 

[LD1]

OK enlighten me, I admin that my thinking the pressure relief valve would have protected valve body was wrong, BUT for the fact the relief path was probably through tank port which is blocked by closed (disconnected) QC....

Whats to enlighten. You now admit that what you posted was bad info. And its not just this thread either. Countless threads about cylinders drifting down on loaders and people constantly insist it the cylinder seals. Or constant pictures of someones DIY whatever that has low pressure black iron and galvanized water fittings on high pressure hydraulics. Again...I am just amazed at some of the stuff I see and read on here.