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856 Park Brake


superih

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It has been discussed on here before about an aftermarket park brake kit that is way better than OEM, can someone please point me in the right direction?

The park brake on the 856 won't hold unless you set it and slowly let off the hydraulic brakes or the park brake just skips, won't stay engaged.

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I just did the update on my 806

the kit is available from CIH 

little over $100 but well worth it. 

Pretty strait forward installation. 

Comes with some new linkage pieces and a tough spring. 

Only semi tough part of installing it was that you need to remove the top cover on range transmission to install that spring. 

Mine was doing same thing. Just ratchet sounds as it rolled down any type of hill. Now it make one click and that spring engages the lock and it holds good. 

I can look up the kit part numberin my recipes if you want. 

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A kit is well worth the money HOWEVER, a properly adjusted park lock will hold just a good.  The difference is you can't just jam the original one in park as then you bend the linkage and it does not hold.  There is  a rather simple trick to get it in park that only requires turning the steering wheel and that will move the gears enough  to pop into park. It has to have a over center action if properly adjusted.

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I have the kit on all my tractors except the 1066 hydro. If it gives problems I'll put it on there too. Like Pete says it should work fine without it... but... no matter how many times I would tell my well intentioned helpers how not to use  it, I would still get on the tractor sometimes and the lever would be jammed down so tight I could barely lift it. Bent linkage yup. It's a park lock, people not a brake!

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50 minutes ago, 65806 said:

I think the 1066 had the new style with the spring from the factory. 

We have two that we converted and one that needs converting so maybe only the later ones did?

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1 hour ago, Maynard said:

The spring loaded park lock started with the 86 series tractors.

Our 1066 and 1466 must have something different than the 806. 

They don't overcenter and lock like the 806 did but they don't have as heavy of a feel to it like the update kit gives you. 

Not sure I guess.  

One thing I'm sure of is I like the new kit on the 806. Gives you some feeling of trust that it's not going to just roll away. 

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It is a new locking lever with a heavy spring that all goes under the range transmission cover with some new external linkages also.  All it does is allows you to put it into park by compressing the spring and if gear and park pawl are not in alignment, the spring just pops it in when the tractor moves a hair.   With the original park lock, those pawl and gear have to align when you engage the park lever. What happens is that when it does not align operators force the lever and that just bends the wimpy linkage so then it will not engage  properly to hold tractor.On the original factory park linkage,  you have to adjust it so it has a over center action when fully engaged in the park pawl.  If you are not all that familiar with how to adjust it, jack up one rear wheel so you can turn wheel by hand .  Then when operating tractor, do no force lever into park. If it does not go the gear has to turn a tiny bit to align. Most of the time, just turning the steering wheel back and forth will wiggle that rear of tractor and it will go into park.  I preached this for over 50 years now, but still have to  adjust, straighten or replace linkages.

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On my 1206 dad must have put an aftermarket linkage on it as the linkage that goes to the cover has a spring inside of it. I believe it is doing the same as the update kit it just was as simple as removing the factory rod and putting this one in.

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36 minutes ago, jass1660 said:

On my 1206 dad must have put an aftermarket linkage on it as the linkage that goes to the cover has a spring inside of it. I believe it is doing the same as the update kit it just was as simple as removing the factory rod and putting this one in.

Actually, it's not doing the same as the update kit is, but it does help prevent the park lock linkage from bending, as you can force the lever into park even if the pawl isn't lined up with the gear tooth.

Travis

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41 minutes ago, jass1660 said:

On my 1206 dad must have put an aftermarket linkage on it as the linkage that goes to the cover has a spring inside of it. I believe it is doing the same as the update kit it just was as simple as removing the factory rod and putting this one in.

I have one of those on my 806, works okay but if I ever need to pull the range cover for some reason it's getting the park lock update.

I found one of those links on a customer tractor that had jam nuts on both ends. That one didn't work as designed.

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1 hour ago, 65806 said:

I never read the instructions and didn't remove that upper pin. 

Probably explains why it feels harder to disengage than I thought it should. 

Dont know if it's worth taking it apart again or not. 

I'll bet you didn't put the heavy spring on, either....lol

 

Travis

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