Pictures & diagrams ...
Bell housing. (Oblsud)
Differential. Rear. (Oblsud)
Gear levers, Auto and Low ratio
Gearbox o/p shaft components. (Oblsud)
Half shafts. (Oblsud)
Oblsud-tran-008078D5.GIF
Oblsud-tran-008078D8.GIF
Prop shafts. (Oblsud)
Rear axle (Oblsud)
Speedo cable. (Oblsud)
4WD select vacuum master. (Oblsud)
4WD select vacuum slave. (Oblsud)
4WD vac valve in pillar behind sliding door (J Corfield #19)
Front wheel hubs. (Oblsud)
Hub, front, 4WD locking
Transfer box. (Oblsud)
Transfer box external. (Oblsud)
Transfer box operating lever?. (Oblsud)
Auto box wet clutches. (Oblsud)
Auto gearbox types. (Oblsud)
Auto gearbox, external. (Oblsud)
Oil Cooler Plumbing. (Oblsud)
Overdrive. (Oblsud)
Torque converter. (Oblsud)
Check if the cable is binding. You can spend an interesting couple of hours adjusting then road-testing the kickdown cable. Turning the nut clockwise to slacken the cable makes it less inclined to "kick down" - and vice versa. Optimum setting around 5mm of free play in the cable - slack enough to just touch the pump housing when at idle.
To keep it simple, leave Overdrive on (dash indicator light off) all the time. The only time you are likely to need to switch overdrive off, is if you are doing a lot of hill climbing. The 'box will "hunt" between 3rd and 4th - and you want to keep momentum going with high revs. Turning the o/d off locks it into 3rd.