4010 is back up and running, scared to use it

[chliansh]

Shortened Long Link


I just got it back and after $200 worth of parts and about 4 hours of professional JD labor $$$ I am ready to go. The bad part is I am scared to rototill anymore. Even the techs who worked on it were surprised at how light duty the driveline was to the hydro pump, just a simple roll pin holding back all my mighty 18.5 hp? No splines????
I am no engineer but hope that at the 2-3000 rpms the true force applied to the pin\shaft is much is less than say the twisting force on the rear PTO spinning at 540 RPM?

Disappointed first time JD owner......

MikePA: Cleaned up long URL. Please review your message before posting it. It's simple not to do this. Just insert a descriptive word or two between the {url=http://whatever}<font color="red">Enter words here</font>{/url} instead of the entire URL. Replace parentheses {} with square brackets in previous example.

Alternatively, if you use the Instant Markup language URL link, the first prompt is for the URL. The second prompt is for a description. Do not simply paste in the URL again. Type a short description of the link.

 

[RalphVa]

As a 4010 owner, I'm wondering whether you got the machine back to where it could more easily be worked on, or did the tech have to go out into the field and work in the dirt underneath the machine.

If it could be driven (albeit with heavy steering) and possibly dragging implement, maybe you could get it to where one could fairly easily get underneath to align the shaft to drive out the roll pin, etc.

Wonder what the 2210 and 4110 hydraulic drive U joints look like? They're very similar machines.

Ralph

 

[Wannafish]

I had the same problem. Found out it was the operator. /forums/images/graemlins/frown.gif
Since the PTO engagment has no "slip", and due to it being electrically actuated you need to make sure there is minimal drag on any PTO implement you are operating when you engage it.

I'll bet 24 cents you had lowered the tiller so it had contact with the ground, your RPM's were up where the tach shows they should be for "PTO", and THEN engaged the PTO.
(Don't ask me how I know /forums/images/graemlins/crazy.gif).
Too much initial torque through the "pin". Something had to give and it was the weakest link. Poor design? Probably. Preventable in the future? Definately.
(BTW- I have a slip clutch on my tiller and it is set by the book, but the initial torque on the pin was just too much for it.)

Just make sure you don't do the same thing again and all should be fine. I've put more than 100 hours on mine since it happened last year and haven't had the problem again...although now that I'm aware of it, hopefully I won't do it again! /forums/images/graemlins/grin.gif
Just to clarify...I would wager I use (abuse) my 4010 on my small farm harder than 90% of the 4010 owners. I'm just careful when applying loads of any kind. I till approx. 10 acres worth of gardens twice a year, brushhog ~30 acres twice a year, finish mow ~20 acres at least once a week in the summer, move and stack (or feed) 900 lb round bales in the summer and winter, run a few rounds thru the square baler (hooked to the 4010) each year so Mama can feed the Llamas, run ear corn thru a hammermill to feed the chickens, oh yeah - and haul firewood during my "slow" time.

I plan to replace it with a bigger tractor (JD of course) in 2 years. Until then I have no doubt it will continue to do what I ask of it.

 

[RalphVa]

You had a question on the other forum about what happens if the wheels lock up, etc.

I'll bet the wheel drive system is independent of the U-joint that drive the PTO hydraulics.

I've had the wheels and FEL locked while trying to lift near 1,000 pounds of gravel. No problems. Just tilt the loader a bit or back up.

The manual cautions against starting the PTO under high throttle, that it's possible to shear a pin.

I've an LX4 with the standard PTO drive bolt protecting it. I've only sheared the bolt once so far. That bolt is much more substantial that what that roll pin in the U-join probably is. Makes sense from the post on the other forum about more torque out at the user end that at that U-joint.

Ralph

 

[chliansh]

I remeber what I was doing, I had just lifeted the tiller, turned around and set the tiller down again all at full pto speed, is that wrong?

Unit was not field serviced, they came and got it from my site.

I do not think the drive is independent because as soon as it sheared I lost power steering,drive and rear pto.

 

[Wannafish]

"I do not think the drive is independent because as soon as it sheared I lost power steering,drive and rear pto. "

Same with mine.
The "drive shaft" is attached between the flywheel and the hydraulic pump. Hydrastatic transmission can't move tractor w/o hydraulic pressure.

 

[Wannafish]

"I remeber what I was doing, I had just lifeted the tiller, turned around and set the tiller down again all at full pto speed, is that wrong?"

I see nothing wrong with that - it's how I do it too. Maybe an earlier incident caused it to weaken? Anything after this would be speculation.
(OK, where do I send my 24 cents?) /forums/images/graemlins/crazy.gif

 

[Wannafish]

"Wonder what the 2210 and 4110 hydraulic drive U joints look like?"

As I recall, the "u-joint" was a piece of molded rubber that attached to the flywheel with 4 bolts, and had a steel boss in it that the "drive shaft" fit over. The roll pin then goes thru the shaft/boss, holding it together.

 

[RalphVa]

I was underneath my 4010 this afternoon putting the front PTO cover back in place. So, I looked at that U joint. Sent a note to my sales person about it.

Here's what I said, after mentioning this has been mentioned a couple times with 4010s on TractorByNet:

"I was underneath mine this afternoon. It doesn't seem to have this roll pin. The U joint appears to go over a splined shaft out of the engine, and other end of it is welded to the input shaft to the hydraulic system. Looks as though you take the U-joint apart to do any disconnect there.

Was wondering if they made a change in this design by the time they built my 4010? It's a 2004."

Will let you know what he responds.

Ralph