Posted by BarnyardEngineering on July 23, 2021 at 04:04:07 from (161.69.121.33):
In Reply to: Piston ring help? posted by CTX1836 on July 23, 2021 at 03:20:42:
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What you're doing is called a "ring job" not a complete rebuild.
As long as you're willing to take the chance of having to do the work all over again if the ring job does not "take" then there is absolutely nothing wrong with doing a simple ring job.
Plenty of old tractors have had their lives extended just pulling the pistons, honing the cylinders, and installing new rings. If you were putting the tractor out in the field and working it hard every day for 10 hours a day, then it would not be a good solution. For a tractor that only sees light occasional use, there is absolutely nothing wrong with a simple ring job.
The oil pan needs to come off to access the crankshaft to remove the connecting rods so the pistons will come out. On an N series, I have no idea if this is possible without removing the engine from the tractor.
You will need to make sure that the cylinders do not have a ridge worn in the top. Severely worn cylinders won't take a ring job. If there is enough of a ridge at the top of the cylinders you will need a special tool called a ridge reamer to get the pistons out. The ridge will catch the rings and not let the piston come out. Figure on replacing sleeves and pistons if there is that much of a ridge.
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