I have an old 580K Phase 3 that has some serious blowby issues. Everything I know about backhoes I've learned in the last 4 months since I bought it, so please be gentle. I only use it to do landscaping projects on a couple acres I own.
From what I gather, the most probable issue is bad piston rings that are causing the crankcase to become pressurized. The blowby is putting out oil and oil also comes out the dipstick tube sometimes. I'm pretty sure getting this done at a shop is out of my budget, so I wanted to tackle this myself.
The only thread I could find mentions that none of the rebuild kits come with sleeves (https://www.heavyequipmentforums.com/threads/case-580k-4-390-engine-rebuild-questions.54921/). But that was posted back in 2015. Every kit I've found comes with sleeves. I'm hoping this is a change and these kits come with sleeves and piston heads that are a bit smaller so they're designed to go in the cylinder without boring. Could that be the case?
I feel comfortable with most of the process (as far as I understand) but don't know about boring the cylinder. I don't really know how I would go about it, or if I even trust myself to do it. Any information and advice about fixing the issue and replacing the piston rings would be greatly appreciated. If I'm completely off-base with what I'm thinking, I'd appreciate any help putting me in the right direction.
From what I gather, the most probable issue is bad piston rings that are causing the crankcase to become pressurized. The blowby is putting out oil and oil also comes out the dipstick tube sometimes. I'm pretty sure getting this done at a shop is out of my budget, so I wanted to tackle this myself.
The only thread I could find mentions that none of the rebuild kits come with sleeves (https://www.heavyequipmentforums.com/threads/case-580k-4-390-engine-rebuild-questions.54921/). But that was posted back in 2015. Every kit I've found comes with sleeves. I'm hoping this is a change and these kits come with sleeves and piston heads that are a bit smaller so they're designed to go in the cylinder without boring. Could that be the case?
I feel comfortable with most of the process (as far as I understand) but don't know about boring the cylinder. I don't really know how I would go about it, or if I even trust myself to do it. Any information and advice about fixing the issue and replacing the piston rings would be greatly appreciated. If I'm completely off-base with what I'm thinking, I'd appreciate any help putting me in the right direction.