3 New Blade Deck Spindle For John Deere Tca17517 Tca20639 Tca24880 Z Trak MowerREPLACEMENT SPINDLE ASSY FOR JOHN DEERE. SEE BELOW FOR DETAILS. REPLACEMENT SPINDLE ASSEMBLY FOR JOHN DEERE. ZTrak Z510A, Z520A, Z710A, Z720A, Z810A, Z820A, Z830A, Z840A, Z850A, Z860A, Z910A, Z915B, Z920A, Z920M, Z920R, Z925A, Z925R, Z930A, Z930M, Z930R, Z950A, Z950M, Z950R, Z960A,.