[. . . ] FILTER OVERVIEW WITH SERVICE INTERVALS AND CAPACITIES 3020 Series ­ 3120, 3320, 3520, 3720 CAb AIR AND RECIRCuLATION FILTER AIR FILTER ­ mIu10010 Clean or replace every 50 hours ENgINE AIR PRImARy ­ RE68048 SECONDARy ­ RE68049 Service annually, and as required per conditions TRANSmISSION OIL FILTER TRANSmISSION FILTER ­ LVA13065 Replace every 400 hours (Click here for capacity) ENgINE OIL FILTER OIL FILTER ­ m806419 Replace every 400 hours or annually (Click here for capacity) FuEL FILTER FuEL FILTER ­ mIu800645 Replace every 400 hours or annually July 2010. [. . . ] 44 L (11. 8 gal) Cooling System: Tractor Without Cab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5. 3 L (1. 4 gal) Tractor With Cab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7. 0 L (1. 8 gal) Crankcase with Filter: 3120-3320-3520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4. 8 L (5. 1 qt) 3720. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5. 7 L (6. 0 qt) Transmission and Hydraulic System: PowrReverser Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23. 8 L (6. 3 gal) eHydro Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25. 7 L (6. 8 gal) Front Axle: 3120-3320-3520-3720 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4. 5 L (1. 2 gal) Windshield Washer Fluid Reservoir: 3120-3320-3520-3720 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 2. 8 L (0. 7 gal) Refrigerant (R134a): 3120-3320-3520-3720 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]