Help identifying Cummins

Get a flashlight and look the crank at each end and see if you have a current thrust washer or not. That will decide if you have the previous as you might think or not. 2nd, remove the a rod cap and check the bearing wear, if you see a different metal color it would be a good idea to have them all replaced. One bearing at a time, same goes for the main bearing cap.

 

No way those were left. And no way every thing looks good if it won’t turn over. Unless the injectors are too tight. But even at that it would bar over till a plunger bottomed out. And if they are that tight then they are junked out now.


No free travel in the clutch is why it #### the washers out. It doesn’t appear to have much end play cause a bearing is spun

 

@BoxCarKidd @SmallPackage @jamespmack @@OLDSKOOLERnWV

 

That is a Cummins reman engine. They painted them “Formula” gray. The IH red on top of the Cummins beige at least proves it came out of an I-H as a core. Broken thrust washer will keep you from turning it by hand unless you put a prybar between crank damper and gear cover and pry it forward while turning. If that washer is actually broken in that engine it wont run long like that, BUT I have seen crap like that and even pieces of piston rings stuck in the oil pump suction hose from a prior breakdown that was never cleaned out properly. Only dropping the pan and inspection will tell you.

 

You will need to pull all bearings out and check the numbers on them. Many times the remans got only cut on the journals that needed it. So some may still be standard while some may be .010, .020, etc. Always assume that on them old ones that others have already been in.

 

A previous rebuilder may have been nice and stamped/etched the caps or somewhere else if anything was bored oversized or ground undersized but even then I wouldn't trust it. Only way to know for sure is to measure or check part numbers.