[AT] Statistics In Tractor Manufacturing

[James Peck]

Did you  have to replace the head casting or just remove it and have a valve job done including replacing the damaged valve? 1000 hours at 60 MPH would be equivalent to 60,000 miles on a road vehicle.. Maybe the original owner used it so gingerly he did not have the 1000 and 2000 hour service done.

[ Cecil Bearden] I found a long time Ford tractor mechanic who worked in a dealership in the SW part of the state.  He told me that those engines would drop a valve at about 8000 hours if the valve clearance was not adjusted about every 1000 hours.  He also said if they were maintained in adjustment they would run 15000 without major failures.   The UK tractors I was referring to indicated that regular maintenance was performed on them.

[ James Peck] Where do you get the information that an engine failure at 8000 hours is common with that engine. How does that square with the statement that tractors with that engine have gone 14000 hours without failure.