You may have more than one piston with a scuff. The easiest way to check is to remove the oil filter, cut it open and check for piston material. It is normal to find some metal but if it is full of metal you have another problem.
Be sure and check the top ring groove in the piston, It has a steel alloy that Cummins had a problem with debonding on engines built during this era. I doubt if this is your problem as it ran this long.
Odds are the engine was operated with low coolant, has a water pump or radiator or thermostat problem. Some engines built during this era had a system called low flow cooling. They had two thermostats. One was normally open and the other was normally closed. The thermostats switched from open to closed and vise versa as the engine warmed up. Engines with the low flow cooling systen used radiator hoses about the size of radiator hoses. Temp drop across the radiatoe while at operating tem was about 30 deg. F.
Engines with traditional cooling systems will have a temp drop of about 10-15 degrees F at operating temp.
If you have to drop the oil pan again I would remove and cleam all of the piston nozzles. Would also remove and flush the oil cooler on the oil side to remove and foreign material.
The bottom line is something caused your piston(s) to scuff and you have to find out what it is. I am assuming your overhead is properly adjusted. If you can't tell I worked at Cummins in Field Service when theses engines were being produced.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Trailering Your Tractor - by Curtis Von Fange. One of the fun things of summer and fall are the parades and tractor shows that go on across America. Many owners of tractors travel long distances to attend these shows and they usually take their restored iron along with them. Safe trailering practices and inspections will ensure that the event is a fun one. A good habit to develop when using a trailer is to give that �quick look over� before taking it on a trip. Before hooking up to it check the tongue for proper operation. The latche
... [Read Article]
Latest Ad:
1965 International Harvester McCormick Farmall cub tractor 2,500. Two owner tractor. My grandfather bought new in 1966, then we inherited it. Have all the paperwork original manual and all maintenance records. It starts and moves. Comes with underbelly mower, plough, and some other attachments.
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
