Posted by JDseller on December 03, 2011 at 16:47:37 from (208.126.196.144):
In Reply to: Perkins AD 3.152 posted by Jason, NW Ontario on December 03, 2011 at 11:27:41:
Actually a good steady load would be good for it to seat the rings in. I usually try not to let a new rebuilt engine idle too long or lug it too hard for the first 100 hours or so.
Have had a few tractors that where rebuilt for collector fellows and just paraded. They never would run them hard enough to seat the rings. Had two that would burn oil. So I now run all of my rebuilt engines on the Dyno for a few hours at half rated hp and then a full hour at full hp. Have not had any problems since I started doing this. Plus I now can re-torque the head before the guy takes them home.
Have a good family friend that lives in northern Kentucky. He says that they started seeing this issue when guys started to feed round bales of hay. Before that it was common to overhaul a tractor in the winter months. Then the first work to be done in the spring was heavy field work so everything was fine. Then guys started to use round bales. So their tractors where ran at light load in cold weather. So the rings many times would never seat.
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