carrier 76 includes a plurality of inwardly directed teeth 78 on a surface generally adjacent the external teeth 58 defined by the input shaft 50 the planetary gear assembly 48 is more fully described in co owned u s pat no 4 440 042 which is incorporated herein by reference an axially sliding i e dog type clutch 84 is received about the output shaft 40 the clutch 84 defines an inwardly directed plurality of teeth 86 which are complementary to and mate with a like plurality of external teeth 88 disposed on the output shaft 40 the dog clutch 84 thus rotates with the output shaft 40 but may slide axially therealong the teeth 86 are also complementary to the external teeth 58 on the input shaft 50 the dog clutch 84 also includes a plurality of external teeth 90 which are complementary to the teeth 78 disposed on the carrier 76 and which may be selectively mated therewith the dog clutch 84 is axially translatable between a first forward position wherein the external teeth 58 couple with the teeth 86 and thus provide direct drive between the input shaft 50 and the output shaft 40 translated fully to the rear the dog clutch 84 couples the carrier 76 to the output shaft 40 through the mating of the teeth 78 and the external teeth 90 in this position the speed of the output shaft 40 relative to the input shaft.