John Deere Oil Pump Timing Tool – AMT450T Alternative. John DeereM, 40, 420, 430, 440, 1010, and 2010. Other compatible John Deere engines. Many applications usingJohn Deere 115 and 145 engines. Using this tool ensures the oil pump is correctly positioned on the first attempt, allowing the oil pan to be installed without repeated trial-and-error.