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12GB that doesn't move

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Daehler View Drop Down
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Joined: 23 Nov 2010
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    Posted: 23 Nov 2022 at 8:06am
Im going to look at a 12GB that doesn't move, anyone with ideas? Price is right and it does run so going to try and get it bought. Im thinking its something simple since its not just sitting in the middle of a field or trees.
8070FWA,7080 BlackBelly, 7045,2 200s,D19,D17,G, WD,45,UC,7 AC mowers and lots more!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote doctorcorey Quote  Post ReplyReply Direct Link To This Post Posted: 23 Nov 2022 at 8:22am
At least make sure it's full of trans fluid. How long has it been sitting?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote CAL(KS) Quote  Post ReplyReply Direct Link To This Post Posted: 23 Nov 2022 at 10:45am
just guessing here but i would venture to say they suffer from the same issues as 7g, suction screens, filters and hyd pump issues.  hopefully not seals in trans as likely unobtanium like 7g powershift

Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20

Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 23 Nov 2022 at 11:19am
Cal is most likely correct but if that tractor was operational and then set, the transmission is probably about four gallons low on oil. They leak from the transmission into the torque converter housing and the oil winds up on the ground once the housing is overfull. These use a venturi pump to maintain oil level in the converter housing and return the oil to the transmission. Raise the seat and the filler pipe on the left side, (right side of tractor) is the transmission filler. Bring the oil level up to where it shows on the stick, start the engine and don't be surprised if it pukes oil out from the starter nose area. Allow the tractor to run a while to have the venturi pump decrease to correct level the oil in the converter housing and then top up the transmission level. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Daehler Quote  Post ReplyReply Direct Link To This Post Posted: 23 Nov 2022 at 12:07pm
I was going to take a bunch of oil. Im suspecting its low.
8070FWA,7080 BlackBelly, 7045,2 200s,D19,D17,G, WD,45,UC,7 AC mowers and lots more!
"IT TAKES 3 JD's TO OUT DO AN ALLIS, 2 TO MATCH IT IN THE FIELD AND 1 FOR PARTS!"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 24 Nov 2022 at 8:55am
12G was a smooth and powerful tractor. If not worn out in all the arm and bucket linkage they are still very useful; albeit slow by today's expectations.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Doughd16b Quote  Post ReplyReply Direct Link To This Post Posted: 24 Nov 2022 at 12:37pm
They had the hd11 powertrain and hd16 undercarriage
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 26 Nov 2022 at 7:15am
The engine was also almost 1/3 higher in power output than the 11B tractors were IIRC.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 26 Nov 2022 at 8:31am
Was still a Rockford Clutch Trans, similar to Clark, Euclid, International series tractors, they had their issues.  Seals being the worst. 

Looked up p/n's on the 12s, some were same as the 7G had and had issues with, Shafts sitting aside each other as opposed to top to bottom in case may have made longevity some better.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 26 Nov 2022 at 8:51am
I rebuilt one years ago but did not supply the parts, nor remove the unit from the crawler. No really special tools needed other than a jig to hold it upright.

I'm trying to remember the name brand on the fluid additive/seal conditioner they wanted used, but am drawing a blank. IIRC the trans really needed to be kept "topped up" and fluid coolers maintained for longevity. That kinda sounds "run of the mill" but it was critical in these style transmissions.   
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Daehler Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2022 at 6:56pm
Well i got to see the old girl today. She needs alot of tlc. Does run but as soon as i got it started it blew a line. Its been painted over and has fiat on it but the paints peeling and can see all the old decals. I can probably buy for just above scrap so would have about 4k in it by time i get it hauled home. Only real disturbing thing is someone cut the end of the oil coolers out. Im dumb founded how and why. Oil wasn't even on the dipstick on hydraulics. Engine oil was just black not milky so thats good. Needs injector pump rebuilt cause its leaking some but it started pretty good for being 50 out and not running for a few years.
8070FWA,7080 BlackBelly, 7045,2 200s,D19,D17,G, WD,45,UC,7 AC mowers and lots more!
"IT TAKES 3 JD's TO OUT DO AN ALLIS, 2 TO MATCH IT IN THE FIELD AND 1 FOR PARTS!"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Daehler Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2022 at 7:02pm
8070FWA,7080 BlackBelly, 7045,2 200s,D19,D17,G, WD,45,UC,7 AC mowers and lots more!
"IT TAKES 3 JD's TO OUT DO AN ALLIS, 2 TO MATCH IT IN THE FIELD AND 1 FOR PARTS!"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2022 at 7:23pm
From the photo is looks as if the engine coolant was water and froze in the winter months breaking the cast iron cooler housing. This could compromise that oil cooler's integrity as those little tubes that engine oil flows through could be crushed or the solder joints holding them to the end plates could be broken. If the solder joints are broken you would have engine oil in the coolant as soon as the engine is started with the cooler end housing replaced. 



This initial entry fee, (purchase price) seems right but the long term $$$ to make it serviceable, and operable can only be decided by the prospective purchaser. 

How is the undercarriage and transmission once you have physically seen it?




Edited by Codger - 27 Nov 2022 at 7:54pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Daehler Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2022 at 8:54pm
Track pins have some wear and id say rest of undercarriage is around 50%. Dont know on tranny since i didn't have right oil with me and that hose blowed anyway. I figured it used atf buy it had regular hydraulic oil. That cast piece just had to clean of cuts and the pieces were gone and not laying in undercarriage. I think i have a spare end casting off a R7 engine but dont have coolers if needed.
8070FWA,7080 BlackBelly, 7045,2 200s,D19,D17,G, WD,45,UC,7 AC mowers and lots more!
"IT TAKES 3 JD's TO OUT DO AN ALLIS, 2 TO MATCH IT IN THE FIELD AND 1 FOR PARTS!"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2022 at 11:18pm
Mine has "universal" tractor transmission fluid run in it from TSC. When it's changed I'll go to a either a Mobil, or Chevron product meeting the specs, but the TSC oil does also.

Thinking into this; that cooler is for the transmission and not the engine so engine oil would not be into the equation. I do know where there is an 11B parts tractor, but I cannot remember if it was a power, or standard shift tractor as the trans and part of the u/c are gone. The engine is blown in this one.
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