Tractor and trailer braking

djmc

http://www.agriland.ie/farming-news/tractor-and-trailer-braking-are-you-road-legal/

What is an emergency brake in a tractor
How does a brake away brake work in a bale trailer
I take it this means I can only draw 5 bales of silage at a time with my old trailer next year.
Finally is a tractor with a 40 k box capable of doing 40k with a full load or if you drive under 40k are you OK.
When they change road laws it seems to raise more questions than answers.

zfml

Interesting Read: http://www.rsa.ie/Documents/Your%20Vehicle/Ag_vehicles/Braking_FAQs.pdf

Emergency brake: an emergency brake is a back-up braking system which the driver can use if the main braking system is faulty or fails completely. Usually it is activated in the same way as the main braking system – that is, by pressing the brake pedal. Under the new law, an emergency brake is only legally required on tractors capable of speeds over 40km/h.

In a car, the handbrake also serves as the emergency brake.

djmc

40k boxes have been in tractors with over 30 years
There are vintage tractors that can do 40k
We had a 1984 deutz with a 40k box.
The only way I can think a brake away would work is air brakes
I can't see how this is going to work unless it would just be applied to newer tractors.

smokey-fitz

Ah its like everything else, it will never be policed properly and 90% of the gardai wont have a clue what they are looking at.

A breakaway is like the system on a car trailer. If the hitch gives away there is a cable attached to the drawbar going to the brakes, it pulls the brakes and in theory stops the trailer. Now getting a system like that onto a hydraulic braked trailer is another issue.

Zr105

smokey-fitz wrote: »

Ah its like everything else, it will never be policed properly and 90% of the gardai wont have a clue what they are looking at.

A breakaway is like the system on a car trailer. If the hitch gives away there is a cable attached to the drawbar going to the brakes, it pulls the brakes and in theory stops the trailer. Now getting a system like that onto a hydraulic braked trailer is another issue.

There's a fairly simple valve fitted on the likes of nc dump trailers, basically there's a cylinder the same as you'd find on a loader soft ride kit, it's pressurised and then the valve is closed, and held closed by a simple r clip, the r clip is tied to the tractor with a small wire, when the r clip pulls out the valve is opened and the pressurised cylinder dumps the pressure into the brake Rams, can get a fancier version with an electric control unit too that locks the brakes on when you disconnect from the tractor called "Euro safe"

Blackgrass

Zr105 wrote: »

There's a fairly simple valve fitted on the likes of nc dump trailers, basically there's a cylinder the same as you'd find on a loader soft ride kit, it's pressurised and then the valve is closed, and held closed by a simple r clip, the r clip is tied to the tractor with a small wire, when the r clip pulls out the valve is opened and the pressurised cylinder dumps the pressure into the brake Rams, can get a fancier version with an electric control unit too that locks the brakes on when you disconnect from the tractor called "Euro safe"

Our new press has this system, would be easy/cheap to retrofit I'd imagine. Other gear is on air but more so for performance reasons in general use but has breakaway 'built in'.

smokey-fitz

Zr105 wrote: »

There's a fairly simple valve fitted on the likes of nc dump trailers, basically there's a cylinder the same as you'd find on a loader soft ride kit, it's pressurised and then the valve is closed, and held closed by a simple r clip, the r clip is tied to the tractor with a small wire, when the r clip pulls out the valve is opened and the pressurised cylinder dumps the pressure into the brake Rams, can get a fancier version with an electric control unit too that locks the brakes on when you disconnect from the tractor called "Euro safe"

Didnt know that. Thanks for the info.

Reggie.

Zr105 wrote: »

There's a fairly simple valve fitted on the likes of nc dump trailers, basically there's a cylinder the same as you'd find on a loader soft ride kit, it's pressurised and then the valve is closed, and held closed by a simple r clip, the r clip is tied to the tractor with a small wire, when the r clip pulls out the valve is opened and the pressurised cylinder dumps the pressure into the brake Rams, can get a fancier version with an electric control unit too that locks the brakes on when you disconnect from the tractor called "Euro safe"

The next get rich scheme in ireland

djmc

What about fitting an an emergency brake to the tractor how will that work?
5 ton seems crazy low for a max weight for a tractor to tow especially if you're talking about a 150hp 4wd and the trailer weights 2 ton could be down to drawing 3 bales of silage moved at a time

Zr105

Reggie. wrote: »

The next get rich scheme in ireland

Their actually around a long time now, just lads don't know about them or don't like the hassle of them, I've seen nc dumpers with the valves fitted and the safety wire lapped around the little bar that holds the pipes rather that connected to the tractor before.. Have noticed a few other manufacturers with that system fitted on different yokes to just I know the nc dumpers are fairly common with them!

The electric system has a few benefits in that it locks the trailer up solid when you take it off so works as a hand brake, and if your braking fails for whatever reason you can reach over and flick the switch and she'll lock the trailer brakes on..

Just be prepared for brown trousers and hold on tight or your stomach will be wrapped around the steering wheel and your head out through the front window :D

emaherx

djmc wrote: »

What about fitting an an emergency brake to the tractor how will that work?
5 ton seems crazy low for a max weight for a tractor to tow especially if you're talking about a 150hp 4wd and the trailer weights 2 ton could be down to drawing 3 bales of silage moved at a time

3.5 Ton if it's 40K box or better!
So my piddly little 390 can pull 5 ton. (unbreaked)
my 135 can pull 4.2 ton (as that's 3 times weight of tractor.)
And even more shocking is this weight limit has been in place since the sixties!

Only addition for unbreaked trailers is the 3.5 ton limmit for faster tractors and safety chains.

toyotad4d

going off the topic here but would like to know dose anyone here know what would cause brake to heat up on a case ih mxu 125 tractor i could drive flat out on road for 5 or 6 miles and when i get out and put hand on both rear brake hubs you wouldnt be able to keep hand on them for more than 10 seconds. it tends to heat up all the back end if driving on road for longer the brakes were done at some stage before i got it this tractor would only be doing less the 300 houres a year.

foxy farmer

toyotad4d wrote: »

going off the topic here but would like to know dose anyone here know what would cause brake to heat up on a case ih mxu 125 tractor i could drive flat out on road for 5 or 6 miles and when i get out and put hand on both rear brake hubs you wouldnt be able to keep hand on them for more than 10 seconds. it tends to heat up all the back end if driving on road for longer the brakes were done at some stage before i got it this tractor would only be doing less the 300 houres a year.

Possibly brakes sticking on. Will she freewheel if clutched on a slight incline?

mythos110

Check that the oil cooler radiator is not clogged up. (Small radiator in front of the main radiator). Not sure how the filtration system works on those machines but a blocked filter could cause similar issues. I would be inclined to get to the bottom of the issue as driving the tractor with an overheating back end will cause serious long term damage to brakes/seals etc.

emaherx

toyotad4d wrote: »

going off the topic here but would like to know dose anyone here know what would cause brake to heat up on a case ih mxu 125 tractor i could drive flat out on road for 5 or 6 miles and when i get out and put hand on both rear brake hubs you wouldnt be able to keep hand on them for more than 10 seconds. it tends to heat up all the back end if driving on road for longer the brakes were done at some stage before i got it this tractor would only be doing less the 300 houres a year.

Don't know your tractor but your brakes are binding. If the actuators are external there could be a jammed slave cylinder due to water ingress.
If internal it could be a bigger issue. Could also be just incorrect adjustment of the brakes or even just the hand brake.

It's definitely worth looking to get sorted as excessive heat will damage the disks and or seals

toyotad4d

foxy farmer wrote: »

Possibly brakes sticking on. Will she freewheel if clutched on a slight incline?

i jacked up rear wheels off the ground and let down the handbrake and although they felt heavy to spin i dont think they are sticking as i stopped it an a slope before and it rolled away at its ease

toyotad4d

ya id say a trip to the mechanic to be on the safe side

queueeye

toyotad4d wrote: »

i jacked up rear wheels off the ground and let down the handbrake and although they felt heavy to spin i dont think they are sticking as i stopped it an a slope before and it rolled away at its ease

Is there sufficient oil in the back end? If not it will heat up much more quickly than normal.

emaherx

toyotad4d wrote: »

i jacked up rear wheels off the ground and let down the handbrake and although they felt heavy to spin i dont think they are sticking as i stopped it an a slope before and it rolled away at its ease

Did you do this when the axle was hot?
If they are binding just a little, the tractor may free wheel easily when cold. But they will bind more as they warm up.

And like suggested above is the oil level OK?

toyotad4d

emaherx wrote: »

Did you do this when the axle was hot?
If they are binding just a little, the tractor may free wheel easily when cold. But they will bind more as they warm up.

And like suggested above is the oil level OK?

oil level is grand. Must check it when hot as it was only after starting the tractor when i checked it last time.