Farmwithjunk
Super Member
mechanic said:What would be a good rule of thumb will looking at used tractors? How many hrs. on the meter would be a safe number?
The only rule of thumb is there's no real rule of thumb.
I've got a 35 year old tractor with 3000(+) hours that's in better shape than most tractors with 100 hours. It's been pampered since new. I'm helping my son work on a 15 year old tractor with 1800 hours that is trashed. Too many variables to define a set "rule" on how used up a tractor will be in a certain number of hours.
Look at over-all condition. Is it beat up? How's the sheet metal look? Beat up sheet metal isn't the end of the world, but it gives a good indication of how abusive the original owner was. With diesels, I've found that a quick starting engine USUALLY means it's in good condition. Service records look good, but there's no real proof that what is written down was actually performed. Look closely at things like bolts and fasteners. Are they all original? How about rounded off bolt heads? That would indicate lots of work done, maybe in a haphazard manner. If you can, pull the hose/pipe/whatever that runs FROM the air filter to the intake manifold. Is it clean? If not, chances are filters haven't been changed when needed. A GOOD diesel engine will run 5000 hours or more with no trouble. Some go even farther. Abuse one and kill it in a few minutes. Another thing to concern yourself with that goes undetected is the condition of the coolant. You have no way of knowing what went on years ago, but if the coolant was not changed or serviced regularly, it tends to become acidic. Wet sleeve diesels will get pin holes in the cylinder sleeves. That's due to acidic coolant, dirt particles in the cooling system, and cavitation. Look for oil leaks. If possible, inspect the clutch. (Most tractors have an inspection/adjustment access to the clutch)
One thing I always look at on used tractors is the clutch and brake pedals. If they're worn quite a bit, that would indicate a LOT of use. Maybe more hours than what shows on the clock.
Anything mechanical can be repaired. But a tractor that's been hammered on will need all sorts of nickel and dime parts replaced way before it's NORMAL time.