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Case Tractors Discussion Forum
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case DC

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ben mc

12-23-2007 00:13:53




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i have not long had a case DC i know nouthing about them its number is 4611543 DC about 1944??? is has a sezed engine i have the head off to send it in to get done has stuck valves only 1 clyinder is rusty am socking it in desile can move piston up and down a little bit would it be best to very lightly sand the rusty clyinde wit very very fine sand paper to help un seze the engine also cluch and housing is coverd in a black sticky greasy stuff only works if u push cluch lever hard thanks for any addvise as i am kinda new to this have got a ferguson tea but the case is some thing diffrent and being in new zealand there is not many cases

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dog face

12-26-2007 08:14:53




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 Re: case DC in reply to ben mc, 12-23-2007 00:13:53  
do not sand or hone a sleeve in the engine you will never get the grit out from the honing stones or sand paper it is an abrasive and it will imbed in the bearings and remain there and wear out the crankshaft. use a wire brush or remove the sleeves, don't listen to Gene Dotson, most of his advice is wrong! I know because I have been reading his baloney for years!



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LANZMAN

12-25-2007 19:40:05




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 Re: case DC in reply to ben mc, 12-23-2007 00:13:53  
third party image

HERE IS WHAT SHE SHOULD,(MORE OR LESS)LOOK LIKE, GOOD LUCK!!!



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LANZMAN

12-25-2007 19:22:19




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 Re: case DC in reply to ben mc, 12-23-2007 00:13:53  
IS IT POSSIBLE TO POST A PHOTO? i have a friend who is case expert, (who i got my knowledge from!)& he has a case tractor serial number register 4 new zealand, so will forward him the serial number. I will ask him anything else u want 2 no, (that i cant answer!) as well.Did u get it home alrite?

JONTY



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LANZMAN

12-25-2007 19:43:07




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 Re: case DC in reply to LANZMAN, 12-25-2007 19:22:19  
IS THE CLUTCH LEVER ON THE LEFT OR RIGHT HAND SIDE, I THOUGHT LEFT BUT I HAVEN'T SEEN ONE BUILT IN THAT YEAR SO IM NOT SURE. IVE SEEN 1940 CASE TRACTORS HAVING THEM ON THE RIGHT HAND SIDE AND SOME IN 1944 ON THE LEFT HAND SIDE SO I AM NOT SURE WHAT YEAR THE CHANGED THEM!!!



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L.Lamp

12-23-2007 13:30:00




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 Re: case DC in reply to ben mc, 12-23-2007 00:13:53  
There are two common bore diameters for the DC, 3 7/8" and 4". Since it is a 1942, it originally had 3 7/8" cast iron pistons. The 4" bore had aluminum pistons. If you are going to hone the cylinders the head should be removed. It is easier to install the pistons and rods from the top,less chance of breaking a ring. These motors have babbited rod bearings and are adjustable by removing shims as needed. When new, they had three shims on each side of the rod cap. Observe how they came out and put everything back in the same position. Hastings and Perfect Circle both make new rings for the DC. Remove the round plate on the bottom left side of the oil pan to clean the oil pump screen and the accumulation of sludge. There is a plug at the bottom of the clutch housing on the right side. Every time you change oil it should be removed to get rid of the dirty oil in the clutch housing. The oil from the engine will replace the old oil. Check the oil level and fill to the top 1/8" oil pan plug after running the first half hour. Good luck!!!

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ben mc

12-23-2007 11:32:19




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 Re: case DC in reply to ben mc, 12-23-2007 00:13:53  
thanks that has answerd a lot should i wash out the cluch or just leave it dose the oil come from the engine sump or is it seprit??? and where can i get rings for a case at 1 of the clubs i am in there is a big box of rings wot size am i looking for and how do i tell what size they are?????? thanks again this is one steep lurning curve



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Gene Dotson

12-23-2007 04:46:13




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 Re: case DC in reply to ben mc, 12-23-2007 00:13:53  
Ben
The tractor is a 1942 model. Probably exported under the war production program.
You will do no harm by sanding the rust from the cylinder liner. The fact that the piston will move indicates the engine will turn. I would strongly recommend removing the pistons, honing the bores and reassemble with new rings. This can be done without removing the engine or even the oil pan. Just remove the side covers and work through them. Be sure to clean all the skudge from the oil pan.
The clutch is a wet clutch that runs in oil from the engine, so oily sludge is natural in this area. The engagement pressure will likely lesses as the tractor is driven. Lever should require 40 pounds of push on the handle to snap in... Gene

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Bob from Australia

12-25-2007 23:34:42




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 Re: case DC in reply to Gene Dotson, 12-23-2007 04:46:13  
Ben

These machines were designed to be fixed in the paddock by farmers. They are easy to work on. There are many people in NZ and Australia who will be able to help you. The main thing is to get an operators manual, a parts manual and if you can, a genuine Case service manual

Once you get the tractor running, have used the clutch a bit and changed the oil a couple of time (non detergent oil I use Castrol CRB40 in mine) the clutch will probably come good. If not, it is easy to adjust through the plate just in front of the belt pulley.

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