Combines F2 433 Balance shaft Question

you are asking an opinion, here is mine. We have many engines in excess of 6000 hours in 6080's. Barko loaders at 7-8000 hrs. It is true that in any wear item such as bearings it will never hurt to replace them prematurely. Yes we have had a very few fail. This seemed to be in the very first production assy as we have not had one fail in years. The best way to see if yours needs changing is with an oil analysis. Needle brgs do not fail instantly. You will have some warning usually. As the balancer loosens up the gear contact will change and be picked up in a lube sample as metal wear. It is an expensive job to RandR an engine unless you do it as a winter project.

Thanks, your right I was looking for an opinion. I found it hard to believe that it would be a recommended service item. Thanks for the comment again. One other question What are the early years for the 433IJ I have a 80 F2.

good, you have a late , early ones were in 78 - 79 model. there was a change in the blancers on the the later models. I will do some research later an post. Well after a brief look it seems to my memory that the first ones had bushings and the immediate change was to bearings. Maybe someone else will remember.

GEEEZZZZZ Tbtan,now ya got me worried!!My 78 F2 seems fine @2800 sep hrs.I don't need any SURPRISES next harvest.What nowIJIJIJIJSERn41252

sorry, if it makes you feel any better I ask my guys and it seems that tractors were the only ones that have failed balancers. AC had a problem in that they put the 2200 - turbod 2350 or 4.33t and 4.33I in 6060-6080's The clutch had to be depressed to crank as most time the PTO clutch was released. This added up to something like 600n of end thrust on the crank. Now the engine didn't start very well in cold weather so it spun and spun with no oil pressure to the thrust brgs and as a result the crank eventually wound up about a half inch forward of the designed location. ie it eat out the thrust brgs. There were updates and updates to the update to fix. They finally put a 'bra' or external thrust brg on the early models. The late 433's and for that fact 301's all had huge thrust brgs and redesigned crank throws to accept this big thrust brg. More than you wanted to know huhIJ cost ac millions. Anyway the F2's and K2;s did NOT have a thrust load so they escaped most all engine failures.

sorry, if it makes you feel any better I ask my guys and it seems that tractors were the only ones that have failed balancers. AC had a problem in that they put the 2200 - turbod 2350 or 4.33t and 4.33I in 6060-6080's The clutch had to be depressed to crank as most time the PTO clutch was released. This added up to something like 600n of end thrust on the crank. Now the engine didn't start very well in cold weather so it spun and spun with no oil pressure to the thrust brgs and as a result the crank eventually wound up about a half inch forward of the designed location. ie it eat out the thrust brgs. There were updates and updates to the update to fix. They finally put a 'bra' or external thrust brg on the early models. The late 433's and for that fact 301's all had huge thrust brgs and redesigned crank throws to accept this big thrust brg. More than you wanted to know huhIJ cost ac millions. Anyway the F2's and K2;s did NOT have a thrust load so they escaped most all engine failures.

Good news!!I'll not worry about my combine engine.Sounds like the tractor engineers didn't do enough critical thinking.Thanks for following up.

Actually thik of it like this , you have an engine - from the 180,185,190,200,7000, plus industrial applications and the 2200 201 in dozers, forklifts ect and never a crank thrust failure. Testing was done and clutch cycle times were run at the proving grounds. No one ever thought about cranking it over and over in cold weather with both clutches depressed. Just bit us in the butt. And not all units failed. Bulletin sent us out to check end play. Dairy farms were the hardest hit. We had some units with 2500 hours with no excessive wear. After the first 'hit' we have had little problems since. Some 6080's are in the 6-7000 hour range now. If the rear ends were not run low of oil - pinion failures just like the 190s - they were exceptional, high torque, fuel efficient units. 6080 Cab units are still hot items.