For the 1981 T Series Mazda produced a base repair manual then additional supplement manuals for changes made to the model over subsequent years.
The base repair manual is still available but please note that the Mazda factory supplements for March 1984 model changes, 1984 wiring diagrams, 1985 4x4 and T2500 injector pump are all no longer available.Depending on the year your T Series was made a complete repair manual set may not be possible.The Computer Outpost
PO Box 87
Hazelbrook NSW 2779, Australia