John Deere JT30040B KCD10002A Rear Crankshaft Seal Installer Tool Alt.John Deere JT30040B KCD10002A Rear Crankshaft Seal Installer Tool (Alt.) Application: This tool is designed for use with John Deere 4045 engines and various JD models, including: 820 (3 cylinder) 830 (3 cylinder) 1020, 1520, 2020, 2510, 2520, 1530, 2030, 2630, 2040, 2240, 2440, 2640, 2840, 2940, 2150, 2350, 2550, 2750, 2950, 3150 2155, 2355, 2555, 2755, 2955, 3055, 3155, 3255 4030 (4050 with 359 engine only) 5200, 5300, 5400, 5500, 6100, 6200, 6300,