Automatic trans whats inside? pictures wanted

[Scott in Bellingham]

in need of knowing whats inside a automatic transaxle , what the parts look like, whats the gear ratios and options , got any pictures?, any experiance on how it all goes together and works

thanks

Scott

[85Sub4WD]

that's a big question - automatic transmissions are almost really something that a shop must service for the internals due to the precision nature (the exception being the govenor on the 3-speed trannies, and the modulator valve, used for shifts which is mounted externally on the tranny casing),

 

basically the automatic transmission works with a torque converter as a clutch between the engine and tranmission and it has two sets of fins immersed in tranmission fluid, one is driven by the engine and the other set of blades is impelled by the fluid. After that planetary gears locked/unlocked by shifting bands/clutches are used to achieve a specific gear ratio by locking and unlocking the planetary gears - it is a much more complicated design than a manual tranmission, and harder to describe as a result

 

from the service side, the fluid and filter MUST be changed regularly, as it is much more suceptable to deterioration than fluid in a manual gearbox, due to the extreme thermal stress on it bad fluid can RUIN a tranny very quickly

 

if you really want to find out how your particular one works, purchasing a factory service manual (ebay is a good source) for your car is the best way to find out.

 

Otherwise a google search may yield many results for general information reguarding how they work