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Brake pedal locks

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Katie Powner
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PostPosted: Thu Nov 07, 2019 3:52 pm    Post subject: Brake pedal locks Reply to specific post Reply with quote

Hi everyone! I'm thankful I found this forum. I am an author looking for details about brake pedal locks in an older model Massey Ferguson. I know you're supposed to lock the brakes when driving at transport speeds, but how do you do that? Is it a pin? How do the locks work? What year did brake locks come on the scene?

Is it possible for a person to get onto an idling tractor and start driving it down the road without realizing the brakes are NOT locked? In my story, the main character's brother died in a tractor rollover in the past and I'm wondering if it's possible for it to be the main character's fault for telling his brother the brakes were locked when they weren't.

Are there certain years/models that you could more easily make a mistake regarding the brake locks than other years/models? I'd like it to be 1981 or older, a model you might reasonably rake a field with, but without a cab feature.

It is a small detail in the story, but I want to get it right. I appreciate your help!
 
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Dieseltech
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PostPosted: Thu Nov 07, 2019 5:20 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

The brake pedal lock depends on the tractor model, some use a latch, some a sliding pin. The brakes MUST be adjusted correctly too, or when locked tractor can still pull to one side due to the tighter brake.
 
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Katie Powner
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PostPosted: Thu Nov 07, 2019 5:47 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

CVPost-Dieseltech wrote:
(quoted from post at 20:20:38 11/07/19) The brake pedal lock depends on the tractor model, some use a latch, some a sliding pin. The brakes MUST be adjusted correctly too, or when locked tractor can still pull to one side due to the tighter brake.


That is very helpful, Dieseltech, thank you! How often would it make sense to adjust the brakes? Would you check their adjustment every so often (once a month?), or more regularly than that? Do you know if you would be able to tell if the brakes were locked if taking the tractor from idle to drive? Or is it possible to go from idle to drive without realizing whether they are locked?
 
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centash
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PostPosted: Thu Nov 07, 2019 7:07 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

Tractors have an individual brake pedal for each rear wheel. The reason for this is
to assist in turning......depress the pedal of the direction you wish to turn while
turning the steering wheel. The pedal will apply the brake to that wheel only,
allowing for a sharper turn.

To lock the brakes simply means to latch the brake pedals together so both wheels
are braked evenly, this is used when transporting the tractor to ensure straight
line stops, since both brakes are activated regardless of which pedal is pushed.
This can be easily seen in most tractors simply by observing the pedals and seeing
the latch or rod is set across both pedals. Locking brakes became popular during
the 40s as tractor road speeds increased, but some models did not have this til
1960.

Don't confuse locking the brakes with setting the brake which means to apply and
set the brakes so the tractor cannot move....like the parking brake in your car.
You are correct in that the brake pedals should be locked or latched together at
transport speeds....not to do so could result in inadvertent application of one
brake only , usually with disastrous results.

Ben
 
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MF#1
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PostPosted: Thu Nov 07, 2019 7:25 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

"I know you're supposed to lock the brakes when driving at transport speeds" - Some do and some don't. I driven Massey's for over 50 years and rarely locked the brakes. When driving a tractor your throttle is your first brake then gearing then your actual brakes are used. It's not that difficult to press down both brakes with your foot so that they engage the same amount, even if they are not precisely matched. In a field situation you're probably not in road gear so brakes aren't that big of a deal. When I was much younger we had a farm 5 miles away, lot's of back and forth with tractors and wagons, discs, etc. I would guess that my brakes were locked less than 10% of the time with never a problem. Currently my most used tractor only has ONE functioning brake and have used it that way for over 20 years, you have to know your limitations. Per your question if I jumped on a tractor and started down the road it would not matter to me if the brakes were locked or not. If you can't handle 20 MPH then you probably shouldn't be on any tractor. To each his own.
 
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Katie Powner
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PostPosted: Thu Nov 07, 2019 9:26 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

CVPost-Centash wrote:
(quoted from post at 22:07:43 11/07/19) This can be easily seen in most tractors simply by observing the pedals and seeing
the latch or rod is set across both pedals.

Ben


Thank you very much, Ben. So the latch or rod (which depends on the model) is easy to see from the seat? If you DIDN'T look, would you still be able to tell they were locked when you started driving just by how it feels?

And can you recommend a 1975ish or so Massey Ferguson that could be used to rake but without a cab? Perhaps a MF 135?
 
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Katie Powner
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PostPosted: Thu Nov 07, 2019 9:29 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote


Thank you for your insight, MF#1, I appreciate your help!
 
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Katie Powner
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PostPosted: Thu Nov 07, 2019 9:34 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

CVPost-MF#1 wrote:
(quoted from post at 22:25:51 11/07/19) Per your question if I jumped on a tractor and started down the road it would not matter to me if the brakes were locked or not.


This is really helpful, MF#1...if you're willing to indulge another question, what would be the step-by-step process for starting down the road if you hopped on an idling tractor? (I know you'd probably do it without even thinking, but if you had to describe it)
 
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Caryc
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PostPosted: Fri Nov 08, 2019 9:20 am    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote


Hello Katie, Maybe this will help you. These pictures are of my MF202. The MF202 is the industrial version of the MF35 farm tractor. But the MF35 will have the same brake pedals that the MF202 has. This tractor was made in 1958.

In the first pic you see the pedal locking lever in the unlocked position. This means you can activate the right side brakes or the left side brakes by stepping on the appropriate pedal.

The next pictures shows the lever in the locked position. That means when you step on either pedal the brakes on both sides are applied.

The third shows the brake locking lever. It's like applying the emergency brake in your car. The lever is in the unlocked position.

The fourth pic shows the parking brake applied. When you flip this spring loaded lever up and step on the brakes, it locks into a ratchet block and holds down the pedal. To deactivate the parking brake, you just step on the brake pedal and it will release.

I hope this clears it up for you. When you talked about noticing if the breaks are locked together all you have to do is look at the locking lever and it's easy to see if the pedals are locked or unlocked.

It's also very apparent to visually see if the parking break is applied by just looking at the flip lever. But, on the other hand, it would be easy to just hop on a tractor without even looking at the brake pedals. I have actually had the parking breaks set on my MF202 and hopped on it and tried to take off because I didn't notice that it was applied. So it would be easy to overlook either lock if the operator was in a hurry.





 
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MF#1
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PostPosted: Fri Nov 08, 2019 9:54 am    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

The way I do something is not always the way "most" would do it but is usually pretty close, your mileage may vary;-)
Assumptions: the tractor is mine or known to me, I drove it last or did someone else, did I start it up cold or was it worked to operating temp, 3 or 4 forward speed, etc, etc. I will use my 245 diesel as the example. When I get on the seat I scan the gauges looking for issues, clutch in, usually First gear-High range unless I'm pulling out on a highway then Second for a 3 speed and Third for a 4 speed, foot on the brakes, as I release the clutch I may or may not cross-check the brake lock(from your scenario), throttle to about 1200 to 1500 once the clutch is released, rolling then shift to either Third or Fourth(depending on transmission type), full or nearly full throttle and "away we go".

Given your premise about the brakes being locked or not, my "opinion" the scariest scenario would be that getting on a tractor, in a hurry(aren't we all?), when someone else was running it before, not checking the brake-lock(especially if the other person always changed it to their preference) AND the brakes were grossly misadjusted, and needing to make a really sudden stop, THEN the fun starts. Again, just my "opinion" Hope this helps.
 
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Katie Powner
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PostPosted: Fri Nov 08, 2019 12:04 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

Caryc wrote:
(quoted from post at 12:20:35 11/08/19)
Hello Katie, Maybe this will help you. These pictures are of my MF202. The MF202 is the industrial version of the MF35 farm tractor. But the MF35 will have the same brake pedals that the MF202 has. This tractor was made in 1958.


Wow, Caryc, that is SUPER helpful. I really appreciate those pictures, you are the best! Would the same model of tractor in the 1970s have the same kind of brake pedals? And would the MF202 and MF35 both be used for raking a field?
 
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Katie Powner
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PostPosted: Fri Nov 08, 2019 12:08 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

CVPost-MF#1 wrote:
(quoted from post at 12:54:51 11/08/19)
Given your premise about the brakes being locked or not, my "opinion" the scariest scenario would be that getting on a tractor, in a hurry(aren't we all?), when someone else was running it before, not checking the brake-lock(especially if the other person always changed it to their preference) AND the brakes were grossly misadjusted, and needing to make a really sudden stop, THEN the fun starts. Again, just my "opinion" Hope this helps.


This is a great help, MF#1, thank you again. Your descriptions are EXACTLY what I needed!! Does your MF 245 use a latch or a pin/rod for the brake lock?
 
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Caryc
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PostPosted: Fri Nov 08, 2019 12:36 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

Katie Powner wrote:
(quoted from post at 13:04:28 11/08/19)
Caryc wrote:
(quoted from post at 12:20:35 11/08/19)
Hello Katie, Maybe this will help you. These pictures are of my MF202. The MF202 is the industrial version of the MF35 farm tractor. But the MF35 will have the same brake pedals that the MF202 has. This tractor was made in 1958.


Wow, Caryc, that is SUPER helpful. I really appreciate those pictures, you are the best! Would the same model of tractor in the 1970s have the same kind of brake pedals? And would the MF202 and MF35 both be used for raking a field?


Sorry, I don't know about a 1970 model. But, any tractor can be used for raking a field. It all depends on what kind of implement you put on the three point hitch. I have a landscape rake that I use on my MF202. It can be used on any tractor with a category 1 three point hitch. Mu MF202 model was made up to 1967.
 
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Caryc
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PostPosted: Fri Nov 08, 2019 1:47 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote


You said you were a writer so, it sounds like you are writing about some sort of accident or problem concerning a tractor. Perhaps if you told us what kind of accident or incident you imagine happening, we could better inform you of how it would happen with a tractor.
 
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steve19438
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PostPosted: Fri Nov 08, 2019 1:59 pm    Post subject: Re: Brake pedal locks Reply to specific post Reply with quote

almost sounds like a preamble to a lawsuit.
 
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