Hi Neil, I don't have book for D-179 but have book for the 4cyl version D-239. The cyl head bolts are to be tightened in 3 steps, 30 ft-lbs, then 60 ft-lbs, then 90 ft-lbs. There is a bolt tightening squence. Both exhaust and intake valves are set to 0.012 inches. Flywheel retaining cap screws 110 ft-lbs. The main bearings have different settings depending on the type of cap screw all with lubed threads, tighten in 3 steps, 30 ft-lbs, then 60 ft-lbs, then final step as below: Necked down bolts marked: 10.9K set 80 ft-lbs, 12.9K set 100 ft-lbs. Pitch diameter bolts marked: 10.9K set 105 ft-lbs, 12.9K set 141 ft-lbs.
Necked down bolts have a shank diameter of 0.410 inches. Pitch diameter bolts have a shank diameter of 0.500 inches.
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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