1030 is apart no good

jon f mn

Well-known Member
Finally got me 1030 motor apart and it is worse than I thought. The turned bearing was the front one, but the rear one was hot and failing as well. And all the rear bearings show excessive wear. I blew out all the oil gallies and found no obstructions. All the main bearings were in correctly with the oil holes ligned up corectly. I had 40 lbs of pressure on a manual gage and the oil light works and was not on til the end and then only at idle. So I'm not seeing how lack of oil was the problem, but that is what it looks like. Any ideas?

Main bearing number is hmb2810
Rod bearing number is hmb2105
a172186.jpg

a172187.jpg

a172188.jpg

a172190.jpg

a172192.jpg

a172194.jpg
 
Wondering if all oil passages were cleaned with rifle type brushes the first time before assembly? I didn't use them on a Continental gas block years ago, just blew them out thinking all was good. Engine ran a short time, then had bearing damage. Use the Morroso brushes on all passage ways now, no matter how clean they may look..
 
All bearings show signs of oil starvation.

Did you use assembly lube during assembly?

One bearing does show possible out of round problems but its hard to say.

I dont recall how the oil flows in a 30 series case engine but is it possible a gasket blocked an oil passage, giving you oil pressure at the gauge but limited oil flow at the bearings?
 
Definitely a lube issue. Given that it ran 8 hours, though, it had to be getting some oil, but obviously not enough! There must be a partial blockage somewhere between the oil pump and the crank. Any scuffing visible on the sleeve wall?
 
Dang, sure hate to see that Jon. Certainly a lack of lube like others have mentioned, now to find the reason. I know you have other things to do, but if you have time could you explain how the suspected damage and operation all unfolded again. Rod.
 
If started and ran fine. The gage screwed to the side of the block showed 40 psi. Ran fine sitting for an hour or so. Ran it to town to wash it and back and all was fine. Then hooked it to a 14' disc and went to the field. Had some over heating issues so no real hard work. Got over about 10 acres and stopped for something and heard knocking at idle and showed no oil pressure. Pressure would come up with some rpm increase. Shut it down and towed it home.
 
did the big ends of the rods get checked and resized if needed? that's something that needs to be done on EVERY overhaul, did the oil pump get taken apart and checked, does the oil get fed into the center of the oil galley? that would explain why the bearings at each end of the engine failed, either way it all comes down to assembly mistakes
 
Start with the Oil Pump /Know of one that Cut the Key off inside on drive gear to Shaft [the Guy saw the Gage Drop & Stopped Quick.& did not do any Damage = Luck
 
If I recall correctly, Jon, did that engine not sit partially disassembled for an extended period of time before you bought it? If so, I would've suspicious that an insect decided to build his bedroom in an oil galley. After the oil got hot and circulated a while, it likely broke loose and blocked the flow just long enough to ruin the bearings. Unfortunately, there could still be another mud dauper home in a galley.
 
Sorry to hear Jon, one thing we always did, and yes I agree with Bradley on the gallies, but we also went through the oil pump, cause well your there, might as well do it. Just my take Jon
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top