Gotta pull the Head

[Selkirk_D]

No crack there. Machined edge of depression for injector as #40fan pointed out. I’ll post pix of cleaned up chambers later. Pistons are coming out, I’ve got rings, rod bearings, and rod bolts on order. There were no issues with overheating or coolant loss before I tore it down, so I doubt head is cracked. I’ll check everything closely for sure though.

 

[PoTreeBoy]

You may want to check the piston deck height before you pull them, in case a rod is bent.

 

[Selkirk_D]

So got the pan off today, moving front axle was the easy part. I just jacked up front of the tractor until wheels were about 2” off the ground, removed the 6 bolts that held it in place, and lowered the axle with a floor jack until tires were on ground. Some of the bolts were a little tough to get to , but I figured it out. Hardest part was getting pan gasket to let go. Also I didn’t realize pan weighed a ton since its cast iron.

 

[Selkirk_D]

Pulled all the pistons/rods today. #2,3&4 all looked great. # 1 though was another story. While the piston & rings looked fine, the rod bearing was toast. It had been hammered to the point that the the bearing material was squished out the sides and the shell was practically welded to the rod . Lower shell was less hammered but had no crush left. The welded upper shell only thing that kept it from spinning. Fortunately crank appears ok other than a bunch of bearing material being stuck to it. A real mess, hopefully I can salvage it. I’ll break out the bore gauge and mikes tomorrow and see how things measure out. Pretty sure Rod needs replacing as opposed to resizing. Maybe this catastrophe was caused by bad #1 injector that the dealer replaced? Funny thing is, the engine didn’t knock and ran great.

 

[#40Fan]

I've never seen a bearing like that and the crank not needing some work.

 

[North Idaho Wolfman]

Pulled all the pistons/rods today. #2,3&4 all looked great. # 1 though was another story. While the piston & rings looked fine, the rod bearing was toast. It had been hammered to the point that the the bearing material was squished out the sides and the shell was practically welded to the rod . Lower shell was less hammered but had no crush left. The welded upper shell only thing that kept it from spinning. Fortunately crank appears ok other than a bunch of bearing material being stuck to it. A real mess, hopefully I can salvage it. I’ll break out the bore gauge and mikes tomorrow and see how things measure out. Pretty sure Rod needs replacing as opposed to resizing. Maybe this catastrophe was caused by bad #1 injector that the dealer replaced? Funny thing is, the engine didn’t knock and ran great.

Ouch that is bad.
Hope the crank can be cleaned up, but I wouldn't count on it.

 

[Selkirk_D]

I've never seen a bearing like that and the crank not needing some work.

I hear you. But we’ll see once I get the bearing material cleaned off and I measure the journal. At least there was no steel to steel contact. Also, I noticed that the torque needed to remove the rod bolts was way less than the others, like maybe half. This tells me that the rod big end was badly distorted , I was headed to a “ how do I fix the hole in my block?” Thread for sure. Good thing the rods are forged.

 

[North Idaho Wolfman]

I hear you. But we’ll see once I get the bearing material cleaned off and I measure the journal. At least there was no steel to steel contact. Also, I noticed that the torque needed to remove the rod bolts was way less than the others, like maybe half. This tells me that the rod big end was badly distorted , I was headed to a “ how do I fix the hole in my block?” Thread for sure. Good thing the rods are forged.

https://www.fridayparts.com/connecting-rod-17311-22010-for-kubota-v1500-v1702di-v1902di-engine?gad_source=1&gclid=Cj0KCQjw16O_BhDNARIsAC3i2GBXk4N_VqAUPww0VlWDYp57UB6MSNkblYckqPnt27hijkEXropORZcaAuuyEALw_wcB