Tires Spinning Tires

THEBUS · Feb 26, 2002

If I try to move something heavy - or push over a large stump - should I loose traction first and spin the tires or should the engine start to bog down? If I just barely push down on the hst pedal the tractor bares down but will not spin the tires. I have it in the lowest gear - "I" and in turtle. I also have it locked in 4wd with the rear diff. locked. I was under the impression that weight was the limiting factor in compact tractors which made me think the tires would spin if you were trying to move something too heavy. I have a TC40D with loaded R4 tires. Just curious what all of your experiences are.

Bird · Feb 26, 2002

What kind of rpm was the engine running? If the rpm was up around PTO speed, I would expect you to be able to spin 3 wheels when you encounter an immovable object. I think the only time I could not spin the wheels was when I hooked a scarifier on the box blade under an immovable tree root, then lifted with the 3-point hitch enough to really put some down pressure on my tires. I got enough traction that way that I didn't have enough power to turn the wheels.

THEBUS · Feb 26, 2002

I've tried it anywhere from 2500 rpm's to full throttle with the same results.

Bird · Feb 26, 2002

I'm sure not going to say there's anything wrong with your tractor because I don't know enough about that model, but I'm surprised that you weren't spinning your wheels.

DVerbarg · Feb 26, 2002

If you are at or near 2700 RPM (PTO speed) on the TC40D and have the range selector in "I" and are in turtle you should be able to spin the tires, IF the hydro pedal is NOT pushed down all the way. It the engine bogs down let up on the pedal. Pressing the pedal down does not apply more power but rather "shifts" to a higher range increasing the speed but decreasing the torque.

It took me a little time to adjust my natural tendencies from wanting to use the pedal like an accelerator to using the pedal more like a infinitely variable "range of gears".

There have been some discussions about this (with many good illustrations) in the past which was a big benefit to my understanding.

THEBUS · Feb 26, 2002

I am just barely pushing down on the hst pedal and the tires don't spin. I have read as many posts on this as I can find and believe I understand the way the hst works, I just don't understand why the tires don't spin in this instance.

Mosey · Feb 26, 2002

It seems odd to me that your tires are not spinning. I have tried to pull stumps with my TC29D in low range 4wd with the rear diff locked and the tires will spin before the engine bogs down much. I have been able to not spin my tires before the engine stalled when I was digging with my rear scoop in clay. The tires were getting great traction and the scoop was digging in and pulling down on the rear of the tractor. I was at about half throttle in mid range 4wd with the rear diff locked and going in reverse, so the front end didn't try to go up. The engine bogged but did not stall, apparently the hydro drive bypass kicked in, and the tires did not spin. I posted here about it (see the post "Plowing & pushing HST to the limit") and others said that seemed normal.

DVerbarg · Feb 26, 2002

There are some times when my traction is great enough to stall the engine without spinning the tires. The dirt and moisture have to be just right with lots of weight on the rear wheels. This is an exception though.

I would have my dealer look at it and see what is wrong.

CSAW · Feb 26, 2002

I believe if everything is working correctly and you are at a high throttle setting you should either loose traction, stall the engine or or break something. Unless there is some kind of pressure relief such as the one used in the loader circuit. If this is the case maybe it is not set correctly. If not the fluid is bypassing something else.

JJT · Feb 26, 2002

David hit the nail on the head. If the conditions are right my L3710 will stall before breaking traction, (hard dry ground). But if the ground is the least bit wet, or lose, I'll spin the tires before I run out of HP.

THEBUS · Feb 26, 2002

Thanks for the replies. This afternoon I tested the tractor in several different areas on my property. It appears to depend on the soil type and moisture level as to whether or not the tires will loose traction or not. Where the soil is clay, slightly moist with grass on top the tires grab and do not spin. In other areas where I have good top soil, the tires will spin easily. Thanks again.

daffyduk · Feb 27, 2002

I have the same tractor...At PTO RPM tractor should break traction or practically kill the engine. My opinion and my experience with my TC 40D.
Gene

spencer200 · Feb 27, 2002

make sure you are using your lowest gear range when pushing heavy objects. lite foot on the pedal if wheels do not slip ask you dealer to check your hydro pressure. The wheels should slip if you are pushing against something. we have had to replace a couple hydros on tc35-40-45's rite from the factory. because of improper assembly or machining tollerance. good luck!

THEBUS · Feb 27, 2002

I am in the lowest gear, "I" & "turtle" & I am lightly pressing the hst pedal. I can get the tractor to spin in some situations, but others not. From the other posts this sounds normal. Are you saying the wheels should "always" spin if you are pushing against something stationary? I was just about convinced that everything was o.k. but now I'm wondering again. Also, is there a way to check this without having the dealer check it?

Thanks again

jinman · Feb 27, 2002

My TC45D pretty much does the same thing at times, depending on the angle I am pushing with the loader and the type of soil. I have found a "sweet spot" with my pedal which almost always will spin the tires. Maybe I should be spinning the tires more, but one time when I snapped a chain, I realized just how much the tractor was pulling. Please let us know what your dealer says.

spencer200 · Feb 28, 2002

no they should spin in 90% of all situations..It would be hard for you to test this it takes a special fitting that cost 45.00 for the dealer to buy.

JohnInCA · Mar 3, 2002

Gentlemen,

I would like a little advice and clarification on this subject. I have a new TC40D. This afternoon I was using it to move dirt from a large pile. I put it in "I", turtle, 4wd, and 2500 rpm. Moving into the pile, I thought I would see if I could spin the tires. Not at all. I was pressing the pedal very lightly, and it wouldn't even labor the engine. If I pressed alot, it would labor, but no stalling. I tried 2wd, and after a few attempts, was able to spin the tires very slowly. The ground is a compacted pad, very hard and very dry. The rear tires are loaded with water, and there is a 758C on the back. So experts, should I be talking with the dealer? I know he's going to say the usual dealer song and dance, "that's normal"...

Bird · Mar 4, 2002

John, I just plain don't know, but I'm guessing everything may be normal. You just may have enough traction with loaded tires and backhoe that it won't spin the tires.

THEBUS · Mar 4, 2002

John,

I think everything is O.K.. The hydo tranny is completely different than any other tractor I have ever driven and has taken some getting use to. However, I am extremely happy with the tractor and the power it has and I now believe the tires spinning is completely situational (for my tractor at least).

JJT · Mar 4, 2002

It's been my experience, (L3710 37hp, hst), if I'm up against an immovable object, I'll either lose traction, spinning the tires or if the ground is just right - like your, I'll run out of HP, lug the engine and stall. If your tractor doesn't spin the tires, or lug and stall I think you have a problem.