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Case Tractors Discussion Forum
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Case 811

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Mike Hankinson

02-18-2008 16:46:39




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I have a Case 811 gas, it won't stay in high range. Also, do the trany, rear end, and hyd all have seperate fuilds. I don't know alot about Case tractor's, nor this case-o-matic transmission. Any help will come in handy.




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mEl

02-19-2008 03:58:11




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 Re: Case 811 in reply to Mike Hankinson, 02-18-2008 16:46:39  
When I read your post I interpret that your high low shifter in the main transmission slips into neutral. You said range so I'm going with that! The shifter is clamped to the shift rail, not in a pinned or setscrew location, it can be slid to the proper mesh then clamped in position and could have moved from its proper position to a place where it is less than fully engaged. If it is full engaged it could indicate worn teeth on the high range gear and sliding collar, also does the shifter feel like it has good snap in the detent when shifted in to the range positions as broken detent springs were not uncommon in those transmissions. Two of these problems are easy fixes, the other is a split to repace worn gears, the others can be accessed by getting the batteries out of the way,removing the bolts holding the steering column to the cap, removing the shift lever, hood to allow movement of the tank, placing a stick of wood under the tank as far rearward as you can and with a bottle jack lifting the tank far enough to remove the cover, loosen the bracket that supports the steering shaft to allow some flexibility there. If it is the COM unit thats a whole other procedure. A direct drive malfunction could indeed be construed to be slipping out of high range if you don't know the system so the other posts could be right as well, If you have to reengage the floor shifter then its a true high range problem, hope this helps, good luck, mEl

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old

02-18-2008 20:46:04




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 Re: Case 811 in reply to Mike Hankinson, 02-18-2008 16:46:39  
Also as per the Case/IH dealer any good hyd/trans. fluid works just find in the torque converter area. When I had the 811 I had I called them to make sure what to use when I replaced the filter



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Jim From Calif

02-18-2008 19:12:12




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 Re: Case 811 in reply to Mike Hankinson, 02-18-2008 16:46:39  
The 800's have three different oil reservoirs: a. Forward---Case-o-matic or Torque Convector b. Center ----Transmission /differential c. Aft ----- --Hydraulics

Your question about �High Range� I interpret this to mean � �The Torque Convector will NOT stay in �DIRECT Drive� .

If the above is your problem: a. Check the Case-o-matic Oil level b. Clean/ replace the Case-o-matic filter, c. Change the Case-o-matic oil (use Dextron III Trans oil)

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gary tomaszewski

02-18-2008 18:20:34




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 Re: Case 811 in reply to Mike Hankinson, 02-18-2008 16:46:39  
Case-o-matic is one of the tougher trannies of that time, old is correct in both his statements. Owners manuals ARE available, and invalueable. Not knowing what you have or how to use it properly, is a accident READY to HAPPEN. All the fluds are the same (a good grade trans-hydraulic ; i.e. HY-TRAN),and each has its own filter, (All available). AGAIN get a manual.



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old

02-18-2008 17:51:53




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 Re: Case 811 in reply to Mike Hankinson, 02-18-2008 16:46:39  
Not sure what you mean by will not stay in high. If your talking every time you push the clutch down it goes back to low it should since that is the way the linkage is hooked up. It would be a good idea for you to pick up an I-T manual C-201 which covers that tractor



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