Broke my front end

[YukonKing]

So I was pulling backwards in 4x4 with the bucket about 2 feet of the ground. I needed the lift to try and get the load moving. 3-4thousand pounds of concrete Hardie board siding on pallets. It wasn't moving but I tried again.....and bang. Sound came from the left front, I seen dust come of the steel axle housing. I think it is the horizontal shaft between diff and knuckle. I want to keep running the tractor in 2 wheel drive if the shaft just broke in half, I will be dissasembling tonight to see. I will post pictures.

2007 JM 254 ZL20 FEL/L6BH 175hrs.

Attached iss a photo of me driving and a friend trying to co-ordinate extraction, we failed ended up getting the truck and winch.

 

[Johndeere3720]

Hope the damage isnt to bad. Good luck!

 

[Turbo]

Thank you! at least I know what not to do with my front loader, and 3000 lbs.. I wounder it you could of pulled it from the rear.?

 

[RonMar]

Yep, that front drive system isn't meant to move any more than the tractor weight. The wheels need to spin/slip to relieve tension. By loading the front end in 4X4, you gave it way more taction than the drive could handle. Bummer, hope the repairs don't get too involved...

 

[Ranch_Hand_Supp]

So I was pulling backwards in 4x4 with the bucket about 2 feet of the ground. I needed the lift to try and get the load moving. 3-4thousand pounds of concrete Hardie board siding on pallets. It wasn't moving but I tried again.....and bang.

.

That will put the test to the best of them. With the couter weight on both ends the front diff assy was asked to move / carry the whole load with little to no help from the rear.

Hopefully just a axle.


Ronald
Ranch Hand Supply

 

[YukonKing]

So,

Its apart, I did break just the axle, but the broken inner end is still in the carrier bearing.....gonna need a strong magnet.

I had tried pulling from the load from the rear but had just loaded more siding on and once set to the ground it wouldn't budge. So i did try from the front to get a bit of lift, it almost got it moving. The funny thing is that I had just drug it 300+ft but had stopped to load on more. Go figure. I'm going to re-assemble and run in 2wd until parts arrive.

Don't tell anyone but i think the rear end was in the air when it finally let go. A true testament to the strength of these little chinese machines. And thats with the 1250lb BH on. YES rops, and Yes seat belt.

 

[greg_g]

the rear end was in the air when it finally let go.

that's actually what snapped the axle then. There's no center differential, the front drive shaft is simply slaved off the main drive shaft by a sliding gear in the transfer case. When the rears wheels spun, the fronts didn't - and the axle paid the price. Similar breakage has occurred under much lighter loads too. One guy was clearning snow in 4wd, moving forward with all four tires spinning. Tractor moved onto dry pavement - front wheels bit while rears were still spinning - instant snapped front axle.

//greg//

 

[YukonKing]

Good magnet, thankfully it was the axle and not something else. When it happened there was no wheel spin, I simply had to much loading on the front axle, as I let out the clutch (low first) I felt the rear get light and pop.

So no shock load, just to much torque and to heavy of a load. 100% my fault, but now I know.

Easy fix; steering cylinder nut, drag link nut, then six nuts to pull knuckle.

 

[Affordable]

I have the new parts in stock if we can help you,you can order online or give us a call 979-865-4002 we are open on Sat.8-1pm.We ship the same day in most cases

Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[Ranch_Hand_Supp]

So,


Don't tell anyone but i think the rear end was in the air when it finally let go. A true testament to the strength of these little chinese machines.

Ok, I want tell if you want. But I am forever putting my 254/284 to the limit loading / moving equipment with the rear tires shimming the ground (rear tires loaded).

It is a easy fix / repair....... remember it takes a while for the gear oil to settle / level in the front diff when you refill with gear oil.

Just love your honestly !!

Ronald
Ranch Hand Supply

 

[Ranch_Hand_Supp]

There's no center differential, the front drive shaft is simply slaved off the main drive shaft by a sliding gear in the transfer case. When the rears wheels spun, the fronts didn't - and the axle paid the price.


//greg//

You may want to Google some more and re-read this post, Chinese Tractor Owners Association - CTOA Forums - Tractor Troubleshooting - Jinma 224 4WD Broken




Ronald
Ranch Hand Supply

 

[Soundguy]

This post needs to be linked to and saved.. every time someone wants to really loaddown their tractor and pull from the front.. this link needs to come up. there was a big thread about this about a month or so ago... "hard pulls' in Advice for newbies' thread ...

soundguy

 

[Bob Rooks]

I think what Greg was trying to say is that there is NOT an inter-axle differential on this model tractor. That would be like a third differential that is found on 6x4 tandem axle class 7 & 8 trucks, NP435 transfer cases on 4WD trucks, and most all rubber tired earthmoving equipment except earthmovers.
If there were an inter-axle differential, the rear wheels would spin if they were off the ground and you wouldn't go anywhere unless the inter-axle differential lockout was engaged.

 

[Turbo]

correct me if I am wrong, you have a tractor that weights 3000 lbs with driver a 1200 lbs back hoe , and 1200 loader or a total of 5400 lbs pulling a 4000 lbs that drags factor like 6000 lbs if not more, it lifts the rear end and puts a total load on the front axle a minimum of 11400 lbs .. thats impressive
I am supprised the wheels didn't fall off, or pop!

 

[Bob Rooks]

Personally, I don't like to break my tractor. By understanding it's limitations and applying a little common sense, it will be reliable for a long time.
I said it before, and I'll say it again:
A GOOD OPERATOR ISN'T EXPENSIVE, HE'S PRICELESS.
Much of the problems with Chinese tractors are not the fault of the Chinese.

 

[Turbo]

A GOOD OPERATOR ONLY LEARN BY HIS MISTAKES AND MOST LIKELY IT'S WAS AT SOMEBODY ELSE EXPENSE..

We push the boundary's to see if we can! Other wise we would of never walked on the moon!

Has nothing to do with the operator... if a part going to fail it could fail at 5 lbs or 10000 lbs just depend on the manufactures quility...and luck

 

[Rich Waugh]

Sorry, I can't accept that. Turbo. A part that is designed with steel having a 14ksi tensile strength can't be expected to withstand double that without issues. Having some appreciation of how things work and how they were designed to be operated, and then working mostly within those parameters, is the mark of a conscientious owner/operator. Pushing a machine until it destructs isn't exploration, it's conspicuous consumption. If you can afford it, fine. However many of us have Chinese tractors because they represent a good value for the investment and we do regard the purchase as an investment, not as an experiment in staged destruction.

With the help of forums like this one, we can learn form others' mistakes and not have to make each and every one ourselves. I feel bad for the guy who trashed his front end because he pushedit beyond the design limits, and I also appreciate that he posted the information here so I can learn from it and not have to destroy my own tractor to discover the limitations of the machine.

Just my nickel's worth, your mileage may vary.

Rich

 

[carpenter383]

Sorry, I can't accept that. Turbo. A part that is designed with steel having a 14ksi tensile strength can't be expected to withstand double that without issues. Having some appreciation of how things work and how they were designed to be operated, and then working mostly within those parameters, is the mark of a conscientious owner/operator. Pushing a machine until it destructs isn't exploration, it's conspicuous consumption. If you can afford it, fine. However many of us have Chinese tractors because they represent a good value for the investment and we do regard the purchase as an investment, not as an experiment in staged destruction.

With the help of forums like this one, we can learn form others' mistakes and not have to make each and every one ourselves. I feel bad for the guy who trashed his front end because he pushedit beyond the design limits, and I also appreciate that he posted the information here so I can learn from it and not have to destroy my own tractor to discover the limitations of the machine.

Just my nickel's worth, your mileage may vary.

Rich

I agree with this statement basically anything CAN be broken if someone tries hard enough But it IS up to the owner/operator to use his/her best judgment on the limitations of the equiptment.
I'd say that front axle would be less likley to break in forward than reverse. Not only because of the extra weight but the way the gears are designed. They're meant to take more torque in forward than reverse.

 

[Bob Rooks]

Turbo,
Much, if not all, of the equipment "that goes to the moon" is highly engineered for specific purposes, and with the specific materials for specific purposes.
Non-Destructive Testing (NDT) is a hallmark at NASA, and it is under controlled conditions. NDT is used to verify, qualify, and quantify components and assemblies.
Boundaries are pushed with caution and knowledge, leaving as little as possible to "luck".

 

[Turbo]

Non-Destructive Testing (NDT) is a hallmark at NASA? go rent ( From the Earth to the moon), and then tell me all about the testing procedures..
It certainly not NON-DESTRUCTIVE.

You can't tell me you haven't gone past your Pucker factor on your tractor and realized you shouldn't of done that.
I am new to my tractor , and my manuals don't tell me how to judge what something weights ? or how much slop angle I can traverse? its not till I do it do I find out what my limits are... So I go by: if I can't lift it with the FEL, I will tow it, if I can't tow it , I will leave it... I certainly don't what to brake my tractor...