Posted by Phil9N3667 on December 29, 2020 at 06:31:08 from (173.197.205.106):
In Reply to: Engine assembly lube posted by svcummins on December 28, 2020 at 22:49:53:
When I learned to rebuild the old MACK 237 and 300 engines, my co-worker (veteran MACK mechanic with many years under his belt) always put about a half a teaspoon of oil in the "bowl" in the top of the piston. His reasoning was the first few times it was under compression and fired up, it would lube the cylinder walls. Lubriplate 105 was my go to assembly lube, although I did hear of an engine manufacturer that would void any warranty issues if they found something like that in the oil filter/s after an engine failure. I only had two engine failures in 35 plus years of rebuilding and one was from a bad vibration dampener the boss didn't want to R&R. Crankshaft broke (300 MACK) and the other was a DT530 IH that broke the crank.
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let�s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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