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Rear end lock

R

rlp in Co.

Well-known Member
Do you lock the rear end every time you drop the impliment in the ground or just when you get stuck? Would it save on tires if you used it all the time.?
 
The tractors I have had you could not lock the rear end unless it was noticing slipage and as soon as the slipage was over it auttomaticaly released. So no way could you have it enguaged on a straight line.
 
I don't know what kind of tractors you have but my tractors will lock together after I mash the petal will stay that way until I take my foot off
 
I have a 550 backhoe and a TW35. I thought
that the rear end stayed locked if it was
pulling even if the pedal came back up. Am
I wrong?
 
On the Deere's I've run, 4020,4320,4230,4430, the diff lock engages, or locks when you hit the lever or pedal, stays engaged/locked until you hit one of the brake pedals.
 
I think the 3020 was like that, borrowed uncles once and when went to turn in drive just wanted to keep going. I did not know what a differential lock was at that time. On my Fords as soon as the slippage was past it released automaticaly. You could not make it stay on. That was only one of the many things against that Deere and that is why even tho I was Deere with the 2 cylinders I switched to Ford for newer tractors. I drove 2010 and 2020 as well and the 2020 was supposed to be equal in power and same style as the 4000 Ford it could not match the Ford in use or comfort.
 
I might be all wet on this but it might depend on the tractor. Deeres have a closed center hydraulic system so holding a hydraulic function engaged doesn't hurt anything. Maybe that's why you can lock the diff lock on a Deere. Tractors with an open center system don't like to have a function held engaged for long because the relief valve will be bypassing.

Am I right or wrong?
 
(quoted from post at 17:53:58 08/01/18) I might be all wet on this but it might depend on the tractor. Deeres have a closed center hydraulic system so holding a hydraulic function engaged doesn't hurt anything. Maybe that's why you can lock the diff lock on a Deere. Tractors with an open center system don't like to have a function held engaged for long because the relief valve will be bypassing.

Am I right or wrong?
Click to expand...

yes you are :roll:
 
(quoted from post at 18:50:45 08/01/18) I think the 3020 was like that, borrowed uncles once and when went to turn in drive just wanted to keep going. I did not know what a differential lock was at that time. On my Fords as soon as the slippage was past it released automaticaly. You could not make it stay on. That was only one of the many things against that Deere and that is why even tho I was Deere with the 2 cylinders I switched to Ford for newer tractors. I drove 2010 and 2020 as well and the 2020 was supposed to be equal in power and same style as the 4000 Ford it could not match the Ford in use or comfort.
Click to expand...

LUCKY you supported FORD in their tractor endeavors vs. those awful GREEN things!

Wasn't enough to keep the brand alive, though, I guess???
 
On level ground and with equal "footing" under both tires the differential lock really won't do anything to improve traction since both wheels can deliver the same amount of torque to the ground. In these conditions slippage will be virtually the same on both wheels anyway so it won't do anything to save on tire wear. The benefit of the lock is when you want the wheels to pull unequally by being able to apply more torque to one over the other. When unlocked you can only deliver as much torque to both axle shafts as what the wheel with the least traction can apply to the ground. In operations like in-furrow plowing a lock is a big advantage since the more lightly loaded land wheel has less traction available and thus limits the torque potential going to the furrow wheel. The same situation would occur if one wheel is in the mud and the other on dry ground.

When running my FIL's 7230 Magnum I occasionally use it in rough conditions to help the tractor track straighter but that is about it.
 
Only when it looks like you are going to get stuck and only while wheels are straight ahead.....no differential action where one tire can turn at a different rate than the other.
 
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