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DonDittmar 
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Joined: 15 Sep 2009
Location: MIllersburg, MI
Points: 2480
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 Posted: 13 May 2022 at 7:43am |
 Charlie175 wrote:
DonDittmar wrote:
You do know those shaft are held in with 5/32 roll pins right? |
And those are almost impossible to get out! I had to drill mine out. I used round stock steel for my shafts. |
Never had one I couldnt get out. Need to lay the seat on the side and support it well. Heat the roll pin area red hot and cool with water. May need to do this a couple of times. You need 2 punches, one normal and one cut off short. Use the short one to get the pin moving. Once its moving switch over to the long one punch and take er home. I have maybe done 8 of those seats over the years and I have had them fight me, but never had one where I have had to drill them out.
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Experience is a fancy name for past mistakes. "Great moments are born from great opportunity"
1968 D15D,1962 D19D
Also 1965 Cub Loboy and 1958 JD 720 Diesel Pony Start
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Clay
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Joined: 11 Sep 2009
Location: Udall, Kansas
Points: 9303
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Posted: 13 May 2022 at 8:07am |
Soak the pin with KROIL. Go fishing or take a nap. This will give the penetrating oil a chance to work. Use an air hammer equipped with a flat head tool. The impact of the flat head tool will help vibrate the rusted roll pin and pin loose. Heating the roll pin also works. Should the roll pin be too damaged to drive out, it may be time to break out the Dremel. If you are careful, use a Dremel tool with cut-off wheel. Slice the roll pin off flush with the pin. Use the proper size punch and drive the pin out or drill, if necessary.
Edited by Clay - 13 May 2022 at 8:14am
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 4897
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Posted: 13 May 2022 at 8:05pm |
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Yes I knew there are roll pins in there. Have only been able to get 1 out. Drilling them hasn’t worked with the bits I have so I bought some Cobalt bits. If they don’t cut the hardened roll pins then I will try Docs suggestion. The shafts are really rusted tight. Heat will definitely help. Ordered a new shaft kit this morning, roll pin holes are pre drilled so I won’t have to wait on the machine shop.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
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Posted: 14 May 2022 at 6:15am |
 Took my stuff to my best friends shop last night. First, out of curiosity, I tried the Cobalt Milwaukee drill bit. It will drill the pins but it is risky if I would have been off and drilled the hole off center. So we took it to the bench and got the shaft area red hot, a few punches and it sheared the pin and drove the shaft out just as suggested. It was not that difficult even with years of rust and wear. Used a small punch to drive the remaining roll pin out while it was still hot. Took about an hour to complete the task. Definitely a 2 man job made it much easier. Obviously, the heat and banging on a vise requires a fresh paint job.  . Thanks for all the great advice!! New shaft kit arrives Tuesday. Very pleased with how this project turned out.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 4897
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Posted: 14 May 2022 at 6:28am |
 Also got the steering shaft back from the machine shop, they did an excellent job of rebuilding the shaft. Also bored and installed a new bushing in the shaft mounting block. Haim called me and said that he received my tach. It has 5560 hours on the meter when it broke. So, as I suspected she has quite a bit of hours on her. Hard to tell how many hours is actually on it.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
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Posted: 27 May 2022 at 8:39am |
  Received the mower bracket spacer and installed it. Man I was counting my blessings to locate one. Getting closer to installing the mower. Working on the transport valve today, hope to get that installed.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
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Posted: 27 May 2022 at 8:46am |
 Changing the oil while I work on the transport valve. Apparently the drain plug has not been removed for a long time on the oil filter housing. Having issues removing it. Looking at the parts book it doesn’t appear to be anything behind the housing such as springs or anything mechanical. I may have to remove the housing to get the plug out. Makes a mess to change oil without having a plug to remove. Is it safe to remove the housing?
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Location: Shenandoah, Va
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Posted: 27 May 2022 at 9:04am |
 While I’m the area of the oil filter was there a primer located where this rubber hose is placed? I have a factory parts and service manual and I haven’t been able to find one. It has 2 brass nuts so I’m thinking there was a primer somewhere in the fuel line.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
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Posted: 27 May 2022 at 11:16am |
  The more I get into this thing the more aggravated I get. It’s been butchered in a few ways that’s driving me nuts. As you can see this is the elbow off of the transport valve just like the parts book shows, but the idiot that modified with a hydraulic hose appears the have put a male nut on the line. The parts book doesn’t show the end of the metal line. Am I missing something? Or do I need to get a new compression ring and a female end to screw into the elbow?  Yes lots of questions today lol
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Location: Shenandoah, Va
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Posted: 27 May 2022 at 3:18pm |
 Good news, Ferebee Johnson had a elbow that will work until I can resolve the line issue. Transport valve is in place. As soon a I can find a D17 parts tractor to get both lines off of this will have to be a resolution.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
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Posted: 28 May 2022 at 11:40am |
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Going by my service manual there doesn’t appear it had a primer pump. Still need to know if I can remove the oil filter base to remove the stuck plug? Is there anything attached to it in the block or just a drain hole going back into the block?
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Posted: 29 May 2022 at 8:05pm |
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Anyone know the answer?
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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Charlie175
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Joined: 11 Sep 2009
Location: Shenandoah, VA
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Posted: 30 May 2022 at 1:05am |
Don't see one on the parts diagram. The fuel tank line goes direct to the filter housing. Maybe the tank pressure was enough to prime it.
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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Charlie175
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Location: Shenandoah, VA
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Posted: 30 May 2022 at 1:10am |
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The oil housing has O rings behind it to seal
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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AC720Man
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Location: Shenandoah, Va
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Posted: 02 Jun 2022 at 10:38pm |
  The seat rebuild turned out well. It rides great! Now, to explain the paint. I picked up PO paint at my local Agco dealer. Obviously, it’s PO 2, when I questioned the dealer, they simply said it was PO. Obviously it’s not. Went ahead and gave it a coat over the primer to prevent rust before a full paint job this fall. Looks like PO2 and corporate orange is all that’s on their shelf!
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
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Posted: 09 Jun 2022 at 2:25pm |
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I found out apparently that you cannot run a transport valve off of just the pressure line. I tried it and it just over pressurized the valve and it started leaking fluid under the base and rear of the transport valve. Tried it twice with a new gasket and different sealant each time. I put the stock one on and it hasn’t leaked yet. Will have to wait until I can get a return line before I try it again.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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