"Fairbanks Morse Model 32E piston sectional, piston, and connecting rod assembly.

The Model 32 engines were in service for years in power stations, manufacturing plants, ice plants, flour mills, rock crushing plants, cotton gins, seed oil mills, textile mills, irrigation and drainage pumping stations, and many other locations. To give some idea of the service life of the engine, at 10,000 hours of operation the needle rollers on the piston pin should be replaced. At 20,000 hours the needle rollers should be replaced again and the piston pin should be rotated 180 degrees. At 40,000 hours, or 4.57 years of continuous operation, the piston pin and bushing should be replaced. The Model 32 was built at least into the 1940s. A number of engines were still in regular service at various locations into the 1970s, with at least one being run until 1991. The Indian Grave Drainage District in Quincy, Illinois still has three operational Model 32 engines, and three engines are on standby as back-up power generators in Delta, Colorado."

https://oldmachinepress.wordpress.com/2012/08/31/fairbanks-morse-model-32-stationary-engine/