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Farmall & IHC Tractors Discussion Forum
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856 differential lock

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BFarr

12-09-2003 18:20:45




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As a new owner of an 856, I was surprised to find that it does not appear to have a differential lock. If that is true, then how do you keep one tire from spinning and lose traction??




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Hugh MacKay

12-10-2003 03:47:53




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 Re: 856 differential lock in reply to BFarr, 12-09-2003 18:20:45  
BFarr: Diff locks on these tractors were optional. I ordered one with my new 1066 in 1975. Just a waste of money in my opinion. These locks worked fine on small tractors were they used a gear lockup. With the extra power of large tractors these were only friction discs, and wouldn't hold anyhow. I doubt if the one on my 1066 worked more than 6 months, and even in that time it wouldn't hold in real hard going.

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disagree with you

12-10-2003 18:09:24




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 Re: Re: 856 differential lock in reply to Hugh MacKay, 12-10-2003 03:47:53  
In 1997 we had a blizzard with 30 inches of snow on the level. We were paralized and the older 3/4 ton 4X4 F250 75 & 77 model vintage were wothless. The 1086 and 2290 would go but you had to hold on the diff lock all the time on the 1086 this was a 9000+ hour tractor then and it was still working.



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Hugh MacKay

12-11-2003 03:23:45




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 Re: Re: Re: 856 differential lock in reply to disagree with you, 12-10-2003 18:09:24  
Like you I really don't think my diff lock ever stopped working, even at 10,000 hours. I can understand it being quite effective in ice and snow, it really doesn't take whole lot when neither tire is getting great traction. You put on a set of duals, and enough disk or cultivator to load the tractor, and you wouldn't know you have it. I never used my 1066 in winter and it always had the duals on. I remember 3 or 4 times in mud and a stuck condition, that diff wouldn't hold to keep you moving and out of the mess and once there certainly wouldn't hold.

By contrast I had a Deere forestry skidder with 18.4 single tires all around and diff locks on both ends. This machine was 6 cylinder turbo charged with 8 speed power shift around 100 hp. That one worked quite well, but remember it was two diff locks with 4 tires. That one could push snow, with an 11' blade, 3.5' high. I have seen snow coming over the top of that blade many times. I levelled and packed silage with this machine.

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HOLD DOWN ON IT ALL THE T

12-09-2003 18:48:30




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 Re: 856 differential lock in reply to BFarr, 12-09-2003 18:20:45  
Because it is a IH!! I had a 1086 and it had one never got so damn tired of holding down on anything in my life! Case you just push it down and a brake cancels it. GOOD IDEA



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BFarr

12-10-2003 17:47:10




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 Re: Re: 856 differential lock in reply to HOLD DOWN ON IT ALL THE T, 12-09-2003 18:48:30  
Thank you for the information



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