In a tractor having a front housing and a transmission casing which are arranged in series in a longitudinal direction of the tractor and are fastened together {HEAD ~ the front housing} including an open rear end and a first intermediate wall, {TAIL ~ an improved transmission assembly comprising}: 
In a tractor having a front housing and a transmission casing which are arranged in series in a longitudinal direction of the tractor and are fastened together { HEAD ~ the front housing } including an open rear end and a first intermediate wall , { TAIL ~ an improved transmission assembly comprising } :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH