Posted by Billy NY on March 04, 2013 at 05:38:06 from (72.226.79.200):
Since there have been discussions of this, I went and looked it up in the stacks of manuals in my collection for old caterpillar tractors and its as follows:
Besides honing or etching the cylinder liners, a third method has been used to hasten the seating of new rings to worn liners. This method uses 7F5225 Break-in Powder. The procedure is as follows:
After assembling and starting the engine, loosen the air cleaner to allow a gap between the flange and the inlet manifold. Rune the engine at about 800 RPM and allow the powder to be sucked slowly through the gap and into the engine. Use 1 1/4 teaspoonfuls of powder per cylinder and then tighten the air cleaner. Run the engine at 800 RPM for thirty minutes, and it is then ready for service.
This method of break-in has been used successfully when facilities were not available for honing or etching liners. It has also been successful when, for some unknown reason, new rings and liners have failed to break-in in a reasonable length of time. If the first powder treatment is not effective, a second one may be. However, if the second treatment is not effective, a thorough investigation should be made to determine the cause of oil consumption.
This was taken from the Caterpillar Serviceman's Reference Book for Diesel Engines (5 3/4" BORE 4-CYLINDER) D8800 Industrial, D8800 Electric Set, D8800 Marine, and D7 Tractor.
Form FE031238-01
The book is a product of Midland Press, whom was printing for CAT at the time, I would need an original book to determine the publish dates, however I believe this applied to the era of their naturally aspirated engines like the D8800 which was in production from the 30's to the mid 50's, with about 50,000 units produced for tractors alone.
This should dispel any rumors or mis information about the use of Break-in powder by Caterpillar.
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