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Case Tractors Discussion Forum
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930 starter

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J KIelnhofer

03-05-2005 12:33:50




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The starter on my 930 will engage but won't quite turn the engine over. The batteries are charged and I cleaned everything but still nothing. I do not think my starter could be toast, It always worked great before. It has only sat for about 2 months. Any Ideas?




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J Kelnhofer

03-05-2005 13:22:45




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 Re: 930 starter in reply to J KIelnhofer, 03-05-2005 12:33:50  
Another thing- I am overhauling the engine and I am About to put the heads back on and my gasket set came with a bunch of different rubber o rings that I do not remember taking off the old ones.could somebody also tell me where on the gasket they go or if it does not matter. Thanks



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Jim B

03-05-2005 18:43:24




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 Re: 930 starter in reply to J Kelnhofer, 03-05-2005 13:22:45  
Do the "O-Rings" look like cutoff pieces of rubber hose about 1/4"ID, 1/2"OD and 1/4" long? If so they are used for the injector return lines which you took apart to remove the heads.



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J Kelnhofer

03-06-2005 08:40:55




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 Re: 930 starter in reply to Jim B, 03-05-2005 18:43:24  
No, they are too big for any of the injector lines, they do not look exactly like o rings but I do remember peeling off 2 old ones per head when I took it apart. They are flat shape instead of a round shape. I would think these go around the water holes to help seal the coolant out from getting in the oil. Please bear with me cause I am a beginner, only 17. Thanks



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Jim B

03-06-2005 15:16:06




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 Re: 930 starter in reply to J Kelnhofer, 03-06-2005 08:40:55  
Those flat rubber seals/gaskets (not o-rings) are for sealing the water passages from block to head. These passages are at the foremost & rearmost holes on the right-hand side of each head. Two per head, six for the engine. Glue them in-place on the cleaned block using gasket cement to assure they don't move when you put the head(s) back in-place. I'd strongly suggest you go to your local Tractor Supply Company (TSC) and buy an I&T Shop Service Manual for the 930. Manual No. C-21 covers 730-1030, complete tractor. You should never start a major repair project, especially the first time, without first studying what you are getting into and hopefully completing successfully .... Manuals are one of the primary differences between a professional mechanic and an alley shop.
I admire your initiative, get that book, and Good Luck young Man.

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J Kelnhofer

03-06-2005 19:49:25




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 Re: 930 starter in reply to Jim B, 03-06-2005 15:16:06  
Thanks Jim, I did order a IT shop manual from A.A. Andersons, the local csae dealer, but I do not think it is very thourough because it did not mention anything at all about the sealing rings. Today I did take those gaskets/seals and fit them into the head gasket to see where they go. Thanks for clearing that up, now I know it is only the 2 per head.



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J Kelnhofer

03-06-2005 19:51:05




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 Re: 930 starter in reply to J Kelnhofer, 03-06-2005 19:49:25  
Oh, and I take that back, the book did say about these rings, but not how many and where they go. Thanks again.



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nna

03-05-2005 17:51:09




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 Re: 930 starter in reply to J Kelnhofer, 03-05-2005 13:22:45  
If you are saying that the starter will not turn the crankshaft over without the heads on you better check to see what is too tight. Was the crankshaft ground? If so, did you get the correct bearings?



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J Kelnhofer

03-06-2005 08:33:09




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 Re: 930 starter in reply to nna, 03-05-2005 17:51:09  
No I did not grind the crankshaft but I used the correct size bearings, I don't see what could be keeping the motor tight if its not ther starter.



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John Saeli

03-06-2005 10:19:41




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 Re: 930 starter in reply to J Kelnhofer, 03-06-2005 08:33:09  
Hey J. Is the motor tight? Can you turn it over by pulling on the fan? I learned long ago to "Plastiguage" every Brg. Ring End gaps must also be measured, but a tight ring usually won't show up till she's warmed up.



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Josh Kelnhofer

03-06-2005 11:36:58




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 Re: 930 starter in reply to John Saeli, 03-06-2005 10:19:41  
Will pulling on the fan be able to turn it over without the belt slipping? I think maybe I'll try getting the starter rebuilt, there is a guy a couplke miles away who is quite reasonable. I never "plastiguaged" anything even though the book said to, but I could not quite understand how to do it. By the looks of it the motor was never before apart and the bearings were standard size, so I used new standard size bearings without grinding shaft. Could over tightening bolts on the rod caps have anything to do with it?

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Paul f

03-06-2005 12:32:45




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 Re: 930 starter in reply to Josh Kelnhofer, 03-06-2005 11:36:58  
Before you spend money on a starter try turning the motor over by hand...with no heads it should be easy to turn...Use a wrench on the crankshaft pulley...if the fan belt is reasonably tight you should be able to do it with the fan but i would use a wrench...make sure you are in neutral or better yet lock the clutch pedal down.



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era

03-07-2005 14:11:59




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 Re: 930 starter in reply to Paul f, 03-06-2005 12:32:45  
everything everybody has said us true also might check on backside of bearing for a piece of dirt. Happened to my boy on first motor he overhauled lucky I eas there and made him tear down on bearings untill found problem



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GeoMo

03-07-2005 04:56:43




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 Re: 930 starter in reply to Paul f, 03-06-2005 12:32:45  
I agree with Paul. If motor can be turned by hand, check the Solenoid. I connect jumper cables directly to starter, if starter turn over then I disassamble the solenoid and clean contacts.



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