| 摘要 |
A differential comprises a housing (49, fig 4) having attachment points 46, (48) whereby it can be attached to a structure of a number of vehicles. The housing (49) has a first symmetry under rotation about axis (41) of output half shafts 22, 23 and a second symmetry under rotation about axis (45) of propeller shaft 39. The first and second symmetry provides the housing with two rotational orientations so that the attachment points 46 or attachment points (48) are always used to attach the differential to the structure of the vehicle. The differential may be interchanged between a fleet of vehicle and/or it may be fixed in different positions on a vehicle depending on transmission layout of the vehicle. Propeller shaft 39 has a pinion (31) which meshes with a crown wheel (32) that drives a differential gear arrangement having sun wheels (34) and planet wheels (35) which rotate half shafts 22, 23.
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