Damaged block installing block heater L5240

[Adiredneck]

Here's where the sleeve sits on the "ledge" that prevents it from ever dropping down.

 

[truckdiagnostics]

As far as I can tell, just the bearings on the end are this way. Not sure why. The main bearing that stayed in the block looks ok, just a gouge on it that I am not happy about.

I am trying to figure out why one would send the block out with the main bearing still in? Am I missing something. I don't know if I would blame the machine shop for the damage to the bearing. My guess is they figured you where replacing them. Load the block back up and have them replace the cam bearing. Chances are the bearing on the end look like that because of how there washer works and/or the dirt in there washer.

 

[LD1]

Not sure how their machines work. but the block is typically set on basically a round bar in the saddles of the main journals, and another bar through the camshaft opening to clamp it down.

Its pretty rare to do a rebuild and reuse any of the bearings. And also pretty rare to leave the main halves in the block.

 

[C4Ranch]

Nothing like a freshly honed block!!

As for the bearings, when in doubt get em out!

 

[pmsmechanic]

If this Kubota is like others I have seen when the crank is out there are no main bearing saddles in the block once the crank is removed. They are bolt in and you need to remove them when removing the crankshaft. If you look at Adiredneck's last picture there are no bearing saddles in the block.

 

[sd455dan]

If this Kubota is like others I have seen when the crank is out there are no main bearing saddles in the block once the crank is removed. They are bolt in and you need to remove them when removing the crankshaft. If you look at Adiredneck's last picture there are no bearing saddles in the block.

Gees- that's what was bugging me about the picture, i could see the bores but I couldn't make my brain equate that to a (normal) bottom end...:laughing:

 

[pmsmechanic]

Gees- that's what was bugging me about the picture, i could see the bores but I couldn't make my brain equate that to a (normal) bottom end...:laughing:

It threw me for a loop the first time I saw it too. My thought's were "Who would build an engine like this!". But they last and are a well built tractor with an excellent reputation. They're just not tough enough to resist someone who is very determined to remove a frost plug.

Seeing as the op seems to have a good sense of humor I just couldn't resist that last comment.

 

[The Fred]

Look no piston cooling jets...

Fred

 

[PHILIP8N]

Just one problem that I can see. I might need new a new cam bearing and balancer bearings. They are almost white. I've come too far to let this slide.

They are aluminum bearings for cam and balancer. New ones would look just like that. Philip.

 

[Katahdin]

It threw me for a loop the first time I saw it too. My thought's were "Who would build an engine like this!". But they last and are a well built tractor with an excellent reputation. They're just not tough enough to resist someone who is very determined to remove a frost plug.

The more I read this thread, the more I appreciate that Yanmar molds a 1 inch NPT spot on their blocks to thread in a coolant heater. This should be a standard feature on any diesel!