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Case Tractors Discussion Forum
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Case O Matic Discussion...?

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Glenn FitzGeral

03-10-2004 17:32:54




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I was doing a little reading in the archives tonight. I was reading a discussion which, among other things talked about COM. We only had one tractor with COM...an 830 Diesel. The problem we had is we couldn't get the gears to stop spinning in order to shift. We had to suddenly throttle it down to low rpms and quickly shove it into gear. If you were quick/lucky you got it in with minimal grinding. We have always treated our machinery with care and that gear grinding was disturbing. We bought the tractor used. We really liked it overall. It was probably the best pulling tractor we've ever had. My brother would know for sure but I think it had 18.4x30 tires on it, with wheel weights and 80% fluid. (I know they were 18.4's and NOT a 38 inch rim.) The only thing that came close in pulling was the DC with 13.6x38 Good Year Supertorques. Any way...in the discussion a major problem sited was that COM came out with the wrong or bad seals. When these seals were replaced most of the problems went away. Also someone said many people used motor oil in them--big mistake. Anyway, what does this panel see as the primary reasons for COM's lack of success? I'm thinking now I should have looked in the archives for strictly COM discussion The answers are probably already there! Disregard this lenghty rambling if so!

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Brent Behner

03-11-2004 16:58:57




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 Re: Case O Matic Discussion...? in reply to Glenn FitzGerald, 03-10-2004 17:32:54  
Glenn Must Use Case TCH Oil & Change Filter. Clutch Pedal Rod Must BE ADJUSTED Correctly. Pedal Up Remove Pin & Pull Spool Out To Detent.Adjust Clevus So Pin Goes Into Spool. Push & Holp Pedal Down Spool Should Go Into Detent Position Clevus Pin Should Slide Out. Try These Things First. Case Made Change On Steel Clutch Plates Because Of Draging. Newer Plates Have 4 Lugs, Old Plates Had Teeth & Would Hang Up On Clutch Hub brent

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ted

03-10-2004 22:13:54




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 Re: Case O Matic Discussion...? in reply to Glenn FitzGerald, 03-10-2004 17:32:54  
I have been told COM was not a case design. From what I understand it was a torque converter first designed for use in light tanks, post WWII. I understand that Case was offered two different sizes and opted for the smaller of the two in order to conserve on cost. It is unfortunate, as the larger unit could have handled the power of the later models, ie) 1030, 1070 etc. Personally, we owned three COM's and liked all three. A 800, 830 and a 400b, still have the 400b, great for mowing lawn with a 90" Woods mower, hit the high grass and just flick on the COM.

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Roger

03-10-2004 22:27:56




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 Re: Re: Case O Matic Discussion...? in reply to ted, 03-10-2004 22:13:54  
Ted, I looked in an I&T Red Book at a Twin Disc Advertisment, it shows 2 different convertors, I think Case used the 1100 series, it says it would stand 188 hp & 265 ft/lbs of torque, the 1300 would work up to 212 hp & 330 ft/fbs. Either one would have worked in most of the tractors.



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Roger

03-10-2004 19:33:25




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 Re: Case O Matic Discussion...? in reply to Glenn FitzGerald, 03-10-2004 17:32:54  
Dad & his brother bought 830 Lp's back in '62, both have COM & neither have been touched & both are still in the family, Dad always ran ATF in this one. I wish the 930's had COM, I don't know why Case didn't do that, the convertor was able to handle that much power. As far as the gear grinding, I'll admit it is hard to get it into gear the first time without grinding, after that I always come to a complete stop before shifting, it's that simple. I went to see a large Case collection 2 weeks ago & not one had COM, that makes 2 collectors that dont like it, I'm just the opposite, I wish all of them were COM, but to each his own. Some people just didnt understand them or how to run them, my Grandpa was used to F-20's with a dry clutch, he always wanted to rev them up a little, then let up on the clutch pedal, it would jerk, he would cuss the hell out of it then do it all over again, I don't think he ever got used to it, Mom would never run the 830, she prefered her JD G to haul in from the field, she liked the hand clutch.

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Don Rudolph

03-10-2004 18:55:19




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 Re: Case O Matic Discussion...? in reply to Glenn FitzGerald, 03-10-2004 17:32:54  
Glenn,
Do you really want to open that fire hydrant? I ask every Case dealer that is still living 2 questions: What is your favorite Case tractor and What do you think about COM? You wouldn't believe the differing answers I get about COM. It seems that the introduction of COM was a publicity campaign extravaganza that was quite successful. But then cheap seals in the small tractors failed and that gave them a bad rap right away. The seal problem was quickly solved but some damage was done. Next, COM had to be taught to use correctly for hitching up especially. Many dealers now admit they did not spend enough time with the farmer teaching it. Also, a Case engineer told me that COM was not designed to be used all the time-you needed to shift out of it. Few people remember this. Many farmers put in motor oil and that was bad for the converter. Finally, the trade in value of a COM was horrible-even from a Case dealer trade on another Case! An old and dear Case dealer friend told me that it was designed backwards- it should have been in direct drive on the start and you should have to shift into COM, not into direct drive. I think that would have been better but not perfect. I liked our 830 COM standard, it had 18.4-30's and could pull like the dickens. Are you sick of winter yet??? Don

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ted

03-10-2004 23:42:05




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 Re: Re: Case O Matic Discussion...? in reply to Don Rudolph, 03-10-2004 18:55:19  
Here is a funny COM story, told to me by Louie Loosebrock, Case Dealer from Western MN in the 1950's-60's. He'd bought the company line re:COM and so staged a big "showdown" with the local JD dealer. Back then they didn't have OSHA or any such problems, so they just decided to chain the the JD730 drawbar to drawbar with the Case 800. Well the Case 'blockman' insisted on running the Case and he didn't know what he was doing. He shifted it into the next highest gear from road speed and the JD dealer put his 730 in first. Well, you can guess what happened? The JD popped and blew and bunch of black smoke, and the Case just whined away, hopping backwards like a rabbit. The crownd started yelling at the JD dealer to "Tow that pice of junk down to the dump!" I asked Louie, "What did you do?" He said, "I went out and got drunk!" TRUE STORY

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Glenn Fitz

03-10-2004 19:34:00




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 Re: Re: Case O Matic Discussion...? in reply to Don Rudolph, 03-10-2004 18:55:19  
Yes, winter can go away now. April 24 my '54 SC will be delivered from Owosso, Michigan. Another reason to look forward to spring!



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