Backhoe 3PH Backhoe rock n' roll

[Anonymous Poster]

3PH Backhoe rock n\' roll

HI,

The new Kubota B2910 will be delivered tomorrow.

I checked it out today and had a chance to work the backhoe. I noticed some "play" in the system, that caused the conecdting point at the top link bracket to shake, rattle and roll. The dealer said this was normal. I don't like it if it is.

Click, click, click is not my piece of cake in a mechanical system....

Seems like some way to snug that connection point is in order. Not sure how this would be accomplished though.

Just wish it were tighter at that upper link bracket point.

Does this seem normal for a 3pt hitch backhoe?

Sorry for the poor description of the symptom!

So my question is simply: Is the dealer BSing me, or is this bit of "slop" in the 3pt hitch backhoe normal?

It wasn't THAT bad...just more than the zero amount that I would like. Most apparent when I moved the boom up or down quickly and stopped it suddenly. Also since the unit was newly assembled, there was some air in the system which also caused things to bounce more than normal. But still...my first thought was that a subframe backhoe would not have this play in it!

I have no problem with bounce caused by air in the newly assembled system....just with the clicking that I am hearing when I get things bouncing around a bit.

Thanks in advance for any advice!

Bill

 

[Rick Jay]

Re: 3PH Backhoe rock n\' roll

Bill,

I can't answer all of your questions, but I'll give you my experience.

I have a Woods 7500 on a subframe mounted to my B2910. As you suggest, I don't have the play you describe. But I think we're comparing apples and oranges. (Well, more like oranges and tangerines since both backhoes are orange./w3tcompact/icons/smile.gif) I would expect there to be a bit more play in a 3 pt. hitch connection, but if the dealer says that's normal, for now I'd accept that. After you get a few hours on her and re-examine the situation, maybe some fellow TBN'ers with 3 pt. mount hoes will share their experiences. One thing to consider is that little bit of play might actually be beneficial when mounting/dismounting it from the tractor. These things are heavy, and a bit of "give" here and there might make a world of difference in ease of attachment.

One thing I've found out is that smooth operation of the backhoe is an acquired art. I'm better than I was, but I still sometimes "jerk" the controls and the whole tractor bounces a bit. This might be part of what you're experiencing.

From some previous posts, I think you and I share some common traits, and if so, right now you're in the "Sherlock Holmes magnifying glass stage" looking for every possible/potential problem with your new baby. I really understand and empathize with that. All I can advise is to stay cool and loose and wait until your new tractor is delivered. Then spend some real meaningful time to get to know how it operates, the sounds it makes, the feel for the hydraulics, etc.

I guess my last word of advice would be to try to get some sleep before your new baby is delivered....but I remember how difficult that was. So, I'll try to catch a couple of winks for ya'.

Good Luck, and enjoy the delivery. /w3tcompact/icons/smile.gif

~Rick

 

[ronjhall]

Re: 3PH Backhoe rock n\' roll

Bill
I have the same combination of tractor and backhoe.
I can think of 3 things that may cause this problem.
1.Dealer did not install the heavy duty Top Link Bracket. Check out this <A target="_blank" HREF=http://www.tractorbynet.com/cgi-bin/compact/showflat.pl?Cat=&Board=owning&Number=107936&fpart=1> THREAD </A>.
2.There is only one pin in place holding the Backhoe arm. Should be 2.
3.Bushing for upper pin may not have been installed. Part # 70050-93985. It’s a 1” OD X 1 ½ X .95 wall bushing.
Make sure that pins for top link are the ones supplied by <font color=orange>Kubota</font color=orange>. They are Heavy Duty. Chains attach the OEM ones.

 

[Anonymous Poster]

Re: 3PH Backhoe rock n\' roll

Thanks for the help guys...

I think all the proper parts are in place, that is the heavy duty top link bracket is there, as are both pins and the bushing.

Pehaps I am just over-reacting...but it is my nature to question whether an answer is BS or Truth, so to speak. Since both the salesman and the mechanic said the bit of play that was there was normal, I guess it is probably a valid answer. But the fact that I could hear this play causing a clicking sound, when I had the bucket bouncing, got me concerned. I would rather not hear a clicking sound...

For example, I would guess that the BX22, which started this whole thing for me, would not make a clicking sound, as I don't expect there is any slop in the setup, due to the nature of the beast.

When things are moved smoothly, there is no sounds made. The sound I hear is coming from the movement at the point where the hoe is held to the heavy duty top link bracket, by two pins. And like I said, this is when the boom is stopped suddenly and bounces.

THere is some play there, and has been pointed out, this play is probably necessary to make it possible to put the hoe on and off in a reasonable maner.

I guess my question should have been:

"Is there some slop at the point where the backhoe is pinned to the heavy duty top link bracket on your 3PH mounted backhoe?"

The answer is natually "yes..."

How much is the question that is hard to answer...I will have to see if I can guesstimate what I am seeing, but for sure I could see that movement when I looked down from the backhoe seat, so it must be at least 1/16 of an inch or I probably would not have seen it.

Thanks for the input...Bill

 

[ronjhall]

Re: 3PH Backhoe rock n\' roll

Bill
There is one more item that can cause movement. The bar that is put up against the 3PH arms. If there is clearance the whole BH can raise. Others have left this with about 1” clearance to make it easier to put BH on tractor. I have tried it both ways. It doesn’t make much difference except for the movement when boom is moved like you described.

 

[Anonymous Poster]

Re: 3PH Backhoe rock n\' roll

I will have to take a look at that. I think it has some clearance. I don't know if I can make it go closer or not. Tomorrow I will be taking the hoe off and using the Rear finish mower. I will take a good look then.

The tractor arrived today and after filling the tires with WW fluid, I used the hoe and loader for a couple, maybe three, hours. I only noticed that clicking sound once, and that was when I had the boom shaking pretty good. Takes a while to get used to the hydraulics and the valves, I guess. Perhaps I just got worried too soon on the hoe issue. I still would rather have it tight though, but when working in the dirt I don't notice the clicking sounds like I did in the dealers garage.

Thanks for the advice!

Bill