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Case Tractors Discussion Forum

930 Tranny 4 low only

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Chris Young

10-17-2006 12:47:41

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Hi everybody I'm thinking of buying a 1966 C.K. 930 Diesel S/N 8293588 (engine # 2144401 model 401) Here is some history about this tractor. The hour meter on the tractor has just over 5000 hrs. And the over all tractor looks to be very clean and all original with hardly a scratch and no dents on it, no leaks anywhere, engine runs good with no smoke. The three point and pto work OK with no load. (Not able to test with load at this time). This past spring the owner was marking a field and first he lost reverse and then he lost all forward gears except 4 low all the while making noise and now the owner is selling it for $500. My guess, and worst case scenario, is that 4 low is on a direct shaft and the other gears, which are on the countershaft, is gone and/or eaten to nothing. I would like to pull off the shift tower cover for visual inspection, but the owner may not go for this at this time. The owner is thinking the repair is too much to handle and has decided to sell it. I found some places that offer used tranny parts for sale for the 930. With my 25 + years experience as a auto/truck mechanic, I have no doubt that I can handle the repairs. But will the cost of the parts be worth it? Any and all replies would be appreciated. Thank you, Chris young Hotchkiss, CO 970-872-4268

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Chris Young

10-18-2006 21:11:02

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 Re: 930 Tranny 4 low only in reply to Chris Young, 10-17-2006 12:47:41  
Hi Jim, Nedd, J.H and Bob Thanks for your replies. It's kinda what I wanted to hear after researching and reading about this fine tractor, so I look forward to bringing it home and removing the shift tower cover and checking it out. I'm going to be bringing it home tomorrow and the first thing I'm going to do is pull the shift fork cover off and ck it out. I hope it is something simple like a broken shift fork. I will let you all know what's wrong with it as soon as I find out. J.H.-I spent many years working for Dodge as a mechanic and I have seen lots of the NV4500 trannys loose their 5th gear retaining nut. Dodge has an inexpensive kit for that repair. I think I charged 4-5 hours for the repair if that. I also have seen where the customer welded the retainer nut back on the shaft and the shaft breaking at the weld, ruining the tranny for sure. Thank You for all the info, Chris

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Chris Young

10-23-2006 21:18:40

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 Re: 930 Tranny 4 low only in reply to Chris Young, 10-18-2006 21:11:02  
Hi everybody Today I removed the shift tower cover on my 930 and what I found wrong was better then I expected. I expected to find not much of a tranny left with only one gear working and all the noise it was making. This is what I found: there is a intermediate shaft that runs along the right side in the tranny that holds what looks like 1,2,3 and 4th gear and the shift forks moves these gears into place including into reverse. The three bearings that support this shaft are gone and the shaft dropped down, misaligning the gears. Luckily, the gears on that shaft are not that damaged and with a little dressing up, the gears may be OK, (my opinon). I have a friend that has 30 plus years rebuilding trannys and I will let him decide if the gears can be dressed up enough to be reused. If not, I'm sure I'll be able to find other gears that will work. From what I can see the cost for parts should not be a problem, but the labor involved to do the job will take lots of time. I don't have any manuals yet, but what it looks like is that I'm going to have to pull the three point hitch assembly off the top and the PTO assembly off the rear and maybe even remove the ring, pinion and axles to make it accessible to the bearings and shaft, and while I'm in that far, I might as well go for it all by checking/replacing all the bearings in the entire tranny and differential, right? I look at it this way, it's only labor and it's free!!! I see there are a few repair manuals for my 930. Can anyone tell me what is the best manual on this tractor for tear down and part numbers? All comments and advice will be greatly appreciated. And thank you for the encouragement about this fine tractor. I will keep you posted, but I don't think I'll be able to get started until spring because of the weather and I don't have a shop yet. I posted a picture on the Tractor Photos section today.

Thanks again, Chris

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10-20-2006 20:24:25

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 Re: 930 Tranny 4 low only in reply to Chris Young, 10-18-2006 21:11:02  
HELLO Chris ,,,with your tranny experience ,I am betting that you will find something You have seen before in ONE form Or another ,,I would also bet that it is a minor Fix ,,A lucky FIX,, If she is making a noise ,I know I do not have to tell you not to force anything on it , and move as little as possible ,,I am still haunted by My brothers 970 busting a hole in the botom of the rearend ,,when He shifted ONE Way ,AND IT went the OTHER WAY , POwer un ruled AND CAST IRON are bad news ,,Please let Us know HOW the "ole girl " is getting along ,Best Wishes JIm

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Chris Young

10-21-2006 03:04:22

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 Re: 930 Tranny 4 low only in reply to jheitkemper , 10-20-2006 20:24:25  
Hi Jim When I went to drive it home yesterday the owner said he had to push start it and use either to get it running and I said let me try starting it first. So it took the 2 new Die Hard 6 VDC batteries home to charge and I noticed that they were hooked up in series and the glow plug was hooked up to the starter motor side plus the solenoid for the glow plug was stuck on closed and the glow plug had a short to ground. So to make a long story short it fired right up with out the aid of either and with no smoke during the cold warm up. I drove it home about a half mile to my house and during slight up hill travel the tranny didn't make any noise in 4 low but during the slight down hill travel the gear started to make noise. 3rd and 2nd gear made lots of noise during power up and coast down. And no gears in high range. When I got home I shifted to Reverse and she went about 10 feet with no noise and then jumped out of gear. (vary promising) Monday I plan in taking off the shift tower cover to do the inspection and I will let you all know then!! Thanks for the support. Chris

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10-18-2006 20:20:34

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 Re: 930 Tranny 4 low only in reply to Chris Young, 10-17-2006 12:47:41  
Kind of would make a guy want to shift it to the high side and see if it had 4 high. Then if it did I would suspect a problem of the lever getting out of the shift quadrant and not allowing it to be shifted into the gears. Hence the noise in the trans is a shifting fork broke or gears wanting to shift ont heir own with out the shifting quad to hold them.

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Jim B.

10-17-2006 19:59:37

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 Re: 930 Tranny 4 low only in reply to Chris Young, 10-17-2006 12:47:41  
Although I have a 930 8-speed, I've not had this or any other problem with the tranny. However, I do feel that Case gearboxes are pretty much bullet proof. I also have a couple 800 series tractors with Case-O-Matic and the main hydraulic clutch doesn’t fully disengage so they grind alot when shifting into gear. I've pulled my shift tower off for an inspection a few years ago and could see no sign of wear from the grinding.... Wow, was my reaction. I also recently replaced the tranny oil and no steel particles were on the magnetic drain plug ... again Wow! I suspect the shift mech may be damaged on the unit you’re looking at. Perhaps broken or spread forks which simply prevent changing gears. Cheap Fix.

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10-17-2006 14:25:51

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 Re: 930 Tranny 4 low only in reply to Chris Young, 10-17-2006 12:47:41  
If Youpass ,Let Me know ,,, that;s a deal worth driving home in 4th low ..,,even to INDIANA ..,really doubt if there is nothing but a minor repair , for instance,Ihave a 95Cummins 5speed dodge ,.lost 5th gear after going down a long grade ...turns out a retainer nut backed off ,,,I bet some of you have had the same thing happen ,,,Its 150 thousand mile innitiation Rite for Dodge,, Good Luck ,Jim

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10-17-2006 13:20:24

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 Re: 930 Tranny 4 low only in reply to Chris Young, 10-17-2006 12:47:41  
For $500 you could buy it and get a good tranny/rearend out of a salvage yard for another $500 and have one hell of a good tractor. Don't hesitate, depending on rubber, it is a $3000-5000 tractor....or if you want to give me his phone#. LOL

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