After 1st Day's Use

   / After 1st Day's Use #1  

Marooned

Bronze Member
Joined
Dec 11, 2005
Messages
76
Location
Colorado County, Texas
Tractor
Kubota 4330 HST, 853 FEL
After 1st Day\'s Use

Took delivery of my new 4330 HST this past Friday, played around on it a couple of hours and quickly garaged it for the night. Next day when I went into the garage to take her out for another spin, noticed a small puddle of hydraulic fluid, about 3 inches in diameter on the concrete floor under the tractor.

Should I be concerned? Call dealer? Or is this Typical?
 
   / After 1st Day's Use #2  
Re: After 1st Day\'s Use

Fluid leakage is not normal or typical on any tractor and your best bet is to call the dealer who sold you the tractor. However, I would first check the hydraulic fluid level to make sure that it is not overfull before you contact your dealer. Some posters on TBN have reported fluid leakage when the level has been overfilled. Take a good look and see if you can find out where the leak is coming from. It could be something simple like a loose hydraulic line fitting or drain plug which tighting should fix, but if you can't find the source or it looks like the cause of the leak is something more serious such as a seal or defective pressure line, I would contact your dealer for repair, either way, any issue should be under warranty.


Jim
 
   / After 1st Day's Use #3  
Re: After 1st Day\'s Use

As AB4D suggested I would look under it before calling the dealer. On both my old B7100 and the new B7510 I developed a small leak in the hydraulic return line connection. I suppose the rubber hose shrinks after a while and starts leaking. It has hose clamps on it and I just tightened them a little and that stopped the leak.

If that is the problem it is easier to fix than it is to take it back to the dealer.

Bill Tolle
 
   / After 1st Day's Use #4  
Re: After 1st Day\'s Use

On my L3430 one of the remote fittings was leaking. I just tightened it and the problem was solved. I have fittings leak slightly once and a while. Just tighten them up.

ksmmoto
 
   / After 1st Day's Use
  • Thread Starter
#5  
Re: After 1st Day\'s Use

After further inspection, it appears that the leak is coming from one of the quick connect couplers up @ the joystick control box. Fluid is leaking from the connection, down the loader frame and onto the ground. Is there any adjustment on these quick connect fittings (or couplers, whichever they are called)?

Guess I will disconnect, clean and reconnect and see if that fixes the problem. Any other suggestions?

Also, when I disconnect the coupler, there should be no hydraulic pressure on it (as long as the tractor is not running), right???? Will any fluid leak out when I disconnect?

Sorry about all the questions, but I'm not familiar with hydraulics at all.
 
   / After 1st Day's Use #6  
Re: After 1st Day\'s Use

</font><font color="blue" class="small">( After further inspection, it appears that the leak is coming from one of the quick connect couplers up @ the joystick control box. Fluid is leaking from the connection, down the loader frame and onto the ground. Is there any adjustment on these quick connect fittings (or couplers, whichever they are called)?

Guess I will disconnect, clean and reconnect and see if that fixes the problem. Any other suggestions?

Also, when I disconnect the coupler, there should be no hydraulic pressure on it (as long as the tractor is not running), right???? Will any fluid leak out when I disconnect?

Sorry about all the questions, but I'm not familiar with hydraulics at all. )</font>

Just work the joy stick in all directions with engine off and it will bleed off any pressure.
 
   / After 1st Day's Use #7  
Re: After 1st Day\'s Use

We have a 3830 and have had this happen several times. It gets your attention when you look down and see a puddle of oil. Each time I undid and reconnected the offending coupler. I'm wondering whether to replace the coupler or maybe the o-ring inside. Before I uncouple I shut off the tractor, and with the bucket down jiggle the control lever to all positions. Don't know if you have to, but that way you know there's no pressure. I'll be interested to see what your remedy is.
 
   / After 1st Day's Use
  • Thread Starter
#8  
Re: After 1st Day\'s Use

I'll give it a try tomorrow after work and let you know if it works. Thanks.
 
   / After 1st Day's Use #9  
Re: After 1st Day\'s Use

( After further inspection, it appears that the leak is coming from one of the quick connect couplers up @ the joystick control box. Also, when I disconnect the coupler, there should be no hydraulic pressure on it (as long as the tractor is not running), right???? Will any fluid leak out when I disconnect?)

I truncated your post for the sake of clarity, not as an insult.

You must relieve all hydraulic pressure on the line which you want to disconnect. You may be able to disconnect under pressure, however, you will not be able to reconnect the line with pressure at the check balls. Been there done that. It's messy and gets UDT all over you and the tractor, so, so as not to have a mess, before you disconnect any couplers to clean them (and it's possible though highly unlikely that dirt within the coupler will cause it to leak), follow the loader dismounting procedure to relieve all pressure on the couplers. You can shortcut the whole dismount procedure (if you don't actually want to dismount the loader) by setting the loader on the ground with the bucket flat. Turn of the engine and rotate the joystick in a circular motion (between all detents) 2 or 3 times to relieve pressure. Then you can part any of the couplers at the joystick. I suspect your problem isn't the coupler itself but, rather the nuts which attach the coupler to the hose and hard pipe. With the loader relaxed, I'd check all the fittings for looseness in as much as your tractor is new.

I know that sounds complicated but if you disconnect a coupler with pressure present, it's a B***H to recouple. There are couplers specially designed to uncouple under pressure and re couple but they aren't used on FEL's

One other thing. When you recouple, push the female (hose end) on the male (hard pipe or valve body). don't twist it, push it straight and deliberately on. Twisting the female fitting is real hard on the rubber seal inside.
 
   / After 1st Day's Use #10  
Re: After 1st Day\'s Use

With all the hydraulic problems on new tractors that I am seeing, I am starting to worry about Kubota's quality control. Your tractor, abunch of B series owners and my bx2230, what is going on here? Any real cause for concern, or is this a case of early buyer's remorse that is unjustified?
 

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