Experienced engine failure and main bearing turned in journal. No loss of oil pressure. No overheating on crank shaft.  All relief valves working. Have no idea why this bearing turned on the crankshaft.  Stopped motor in 10 sec. at full RPM's. Any ideas what happened would be appreciated.
							
						
					Announcement
				
					Collapse
				
			
		
	
		
			
				No announcement yet.
				
			
				
	
John Deere 7520
				
					Collapse