Ordered a snow plow, questions.

LouNY · Feb 26, 2019

If you find a stretch of slippery snow or ice,
in 4wd if you can get your range transmission in neutral and you apply both of your brakes hard you will see both of your front tires skid if your rears do.
Those with gear transmissions can do this by simply pushing the clutch and applying the brakes hard enough to skid your tires you will see all 4 tires skid.

ruffdog · Feb 26, 2019

LD1 said:
You don't physically have to have brakes on a wheel for you to have braking ability. Why is this a hard concept to understand?

2wd = rear axle is the only one with ability to stop tractor.
4wd = BOTH axles have braking ability

More reading on this same subject:

https://www.tractorbynet.com/forums/owning-operating/226484-does-4-wheel-drive-4-a.html

atsah · Feb 26, 2019

In 4x4 I can see it acting like a break because the driveshaft is engaged but it's not really a brake.

ptsg · Feb 26, 2019

atsah said:
In 4x4 I can see it acting like a break because the driveshaft is engaged but it's not really a brake.

Yet it brakes at all 4 wheels. You don't need to have a brake for each wheel to make it stop...

Why tractors with electric actuated 4wd will engage the 4wd automatically every time you hit the brakes? Probably because it actually brakes on all wheels.

LD1 · Feb 27, 2019

atsah said:
Technically, it's engine braking more than anything and most 4x4 tractors don't put power to both front wheels.

atsah said:
In 4x4 I can see it acting like a break because the driveshaft is engaged but it's not really a brake.

No, its mot engine braking. Its mechanical braking.

A brake doesnt have to be on each wheel to accomplish 4 wheel braking. Wherever the brake(s) are in the system....if applied....everything that is mechanically connected to them is going to feel the effects of the brakes.

In 4wd....that INCLUDES the front wheels.

I dont know why this is such a hard concept to understand......I mean if you want to get technical....most modern tractors dont even have rear wheel brakes. They are inboard and brake the axle shaft....which in turn brakes the wheel....which in turn brakes the tire that is in contact with the ground.

In 4wd....braking the rear axle, which brakes the output shaft of the transmission/input shaft of rear axle....which in turn brakes the front driveshaft....which in turn brakes the front axles....etc.

Also worthy note....look at some mud/rock crawler trucks.....rockwell axles I think.....no outboard brakes. But there is a pinion brake on the drive shaft. And guess what....it brakes the wheels....

PILOON · Feb 27, 2019

To have front brakes you would need either hydraulic lines or rods/cables going to each wheel.
For sure no CUTs have frt brakes that I know of.

grsthegreat · Feb 27, 2019

Im really confused. If a tractor doesnt have actual wheel brakes, then how can i use individual rear wheel brakes on my dk45 or on my older jd870..

update. I just read an older post fron LD1 explaning how tractor differentials work and its now all coming together. The brakes on my tractor are internal on rear drive shafts, so i can see how i can effect braking on front wheels if BOTH petals are pressed, but not if i only press One side of my split brake system. Makes sence to me now.

ruffdog · Feb 27, 2019

Here is one example of brakes acting on "un-braked" wheels:

I had a 1991 Jeep Wrangler that did not have a modern anti-lock braking system. It was from the era that safe brakes meant hardly no rear brakes. On icy pavement, light braking meant the front wheels were locked up and the rears were far from slowing down because of the proportioning valve. So, once you put the Jeep in 4x4, you now tied the front wheels to the back and all wheels now have the same braking action. Now, the fronts can't skid without the rears skidding and I have equal brakes on BOTH ends.

LouNY · Feb 27, 2019

PILOON said:
To have front brakes you would need either hydraulic lines or rods/cables going to each wheel.
For sure no CUTs have frt brakes that I know of.

Many also do not have rods/cables going to the rear wheels,
before planetary reductions became popular the brakes where mounted on the bull gears.
Not even on the axles.

atsah · Feb 27, 2019

LD1 said:
No, its mot engine braking. Its mechanical braking.

A brake doesnt have to be on each wheel to accomplish 4 wheel braking. Wherever the brake(s) are in the system....if applied....everything that is mechanically connected to them is going to feel the effects of the brakes.

In 4wd....that INCLUDES the front wheels.

I dont know why this is such a hard concept to understand......I mean if you want to get technical....most modern tractors dont even have rear wheel brakes. They are inboard and brake the axle shaft....which in turn brakes the wheel....which in turn brakes the tire that is in contact with the ground.

In 4wd....braking the rear axle, which brakes the output shaft of the transmission/input shaft of rear axle....which in turn brakes the front driveshaft....which in turn brakes the front axles....etc.

Also worthy note....look at some mud/rock crawler trucks.....rockwell axles I think.....no outboard brakes. But there is a pinion brake on the drive shaft. And guess what....it brakes the wheels....