jd 3010 Engine Rebuild #6

Last night I set the valve clearance and got the valve cover bolted on the JD 3010 Engine. I also got the rear seal installed on the crankshaft. I also got the locks "locked" on the bolts that hold the camshaft in the block. Tonight, I will start rebuilding the balancer that goes in the bottom of the engine and open the oil pump up and inspect the oil pump gears and housing and make sure they are good. Slowly but surely it is coming together!

Eric Benton, Southeast Tractor Parts

JD 3010 rebuild #5

In the first picture you can see Baylee supervising and making sure the timing gears are timed properly. The bottom gear in the picture is the crankshaft and the big gear on the left is the camshaft gear. The camshaft makes 1 revolution per 2 revolutions of the crankshaft. It has to be timed because the crank , camshaft and valves work together to get air in and out of the engine. In a diesel engine it takes air, fuel and compression to make the engine run and create horsepower. I have got the head bolted on the block and have to adjust the valves to finish the top of the engine. I will try to get some pictures of it tonight.

The gear to the right of the crankshaft is an idler gear and it turns an air pump that goes in the hole just to the right of the idler gear. Maybe this weekend I will get it mounted.

That's all for now!

Eric Benton, Southeast Tractor Parts,

JD 3010 Engine Rebuild #4

Well my having it done by the weekend kinda got postponed. I cleaned the camshaft up getting it ready to put in the block and the #1 lobe did not look right. I got the calipers and started measuring. The lobe measured .041 inches less than the other lobes. Which means the valve would not open when it should and would not stay open long enough and then it would close early. This is an exhaust valve lobe . The valve closing early would prevent the cylinder from scavenging like it should which could cause it to run a little hotter than it should or skip and sputter. There would be at least a loss of horsepower.
I have a good used cam on order and it should be here tomorrow on the little brown truck. Then I will be back to work on the engine.

Eric Benton, Southeast Tractor Parts. Finding good used parts all over the world!!!!

JD 3010 Engine Rebuild #3

I finally got the pistons in the JD 3010 block. This is a wet sleeve engine which means that the water that cools the engine runs on the back side of the sleeve. It also means that the sleeve is sealed at the bottom with 2 orings that keeps the oil in the bottom of the engine and the water behind the sleeves. It really does not pay to mix the water and oil. The sleeve is sealed at the top with the head gasket.The next thing I have to do is install the camshaft and lifters, the timing gears and the rear seal. Then I will be ready to put the head on the block. Maybe, by the end of the week I can get this done.

Eric Benton, Southeast Tractor Parts, Engines to keep these old tractors running forever!!!!!

JD 3010 Engine Rebuild #2

I removed the main bearing caps and checked the main bearing bolts to be sure they have not strecthed. I blow air through all of the oil passages to be sure they are not plugged up. Sometimes you will find one plugged up with crud, especially, if you a major engine failure with chewed up bearings. This was not the case with this engine. The other thing that plugs up passage ways in block and other things is a Dirt Dauber. They can ruin an engine overhaul. Each time I stop on the engine I will cover everything up. This keeps dust out and most of the Dirt Dauber out. Each time I start on the engine the first thing I look for is traces of Dirt Daubers. They will leave the hole plugged with a white plug. You have to clean them out and clean all of the dirt out of the hole.

The first picture shows the main bearings in the block. I put all the bearings in and put the matching bearing in the cap. These are matched sets to keep the oil clearance right.

The crankshaft also went to the machine shop to be turned and came back with the rods polished standards and the mains were turned to .010 undersized. I put the crank in the block and used Plasti Gage to check the oil clearance. If you have to much or to little clearance the engine will not live. The clearance is .0017 to .0047 mine measured .0027 to .0030 . I removed the crankshaft and greased up the bearings and reinstalled the crankshaft in the block. I use a white Lithium grease to coat the bearings. This gives them so lubrication while the engine is turning and building oil pressure. It will also stay in the engine if the engine sets for 5 or 6 months before being cranked.

I installed the main bearing caps and snugged them up as even as I could before torquing the caps. The main caps torque to 150 ft lbs. I torque the caps in 3 steps, 100, 125 & 150. I torque each cap and then turn the crankshaft to see how it feels. This is to make sure it is not binding the crankshaft as I tighten the crankshaft. If everything is right The crankshaft will turn as easy at 150 ft lbs as it does at 100 ft lbs of torque. And this one was right!!

The next step is putting in the pistons.

Southeast Tractor Parts, selling engine kits every day!!!

JD 3010 Engine Rebuild

This is the JD 3010 diesel block I have mentioned in previous posts. I had sent the block the the machine shop to have it cleaned and to have cam bearings installed in the block. This is how I normally get my blocks back from the machine shop. I have been using the same machine shop since 1980. I do not know how many blocks and cranks I have sent there to get them ready to rebuild. It is always best to start with a clean block. The life of the engine depends on how clean it is when it is put together. This is called an out of frame overhaul and takes an out of frame overhaul kit with all the gaskets and front and rear seal.

More on this as I rebuild it.

Southeast Tractor Parts, Engine kits for JD Tractors!!