This is a demonstration of the power flow and the components of a Toyota U660E automatic transaxle
this transaction was used in 2007 and above Toyota Camrys 2007 and above Lexus ES350 s as
long as they have the V-6 engine this transaxle is unique in that it uses the Ravigneaux planet
design planetary gearset where we have the long planetary opinions and a short planetary opinion
in the same planet carrier that allows us to have two different Sun gears we'll have one
Sun gear come in the front over here and another Sun gear come in the back over there this allows
one planet carrier to function as if it were actually two and it allows for a much smaller
more compact planetary gearset assembly and a much smaller thinner transaxle this is a six
speed automatic transaxle and the six speeds are accomplished with this Ravigneaux gear set
and with an under drive gear set in front of it so the rest of the components involved are of
course we've got two ring gears involved with our two planetary gear sets we've got a roller
clutch that's used in low gear so we'll put the roller clutch on it it's housing easier
said than done this roller clutch is called the F1 roller clutch and it attaches to the B2 brake
but it also has the C2 clutch pack that's going to grab the back out of this and the ring gear
for the Ravigneaux gearset is here also so I'll assemble that get that put together we've got a
C1 clutch pack that's going to drive the Sun gear for the backside of our Ravigneaux gear
set and then on the front side we've got another Sun gear that's going to drive the front of the
Ravigneaux gear set this is that the B1 brake clutch pack is going to grab this and stop it
from rotating but notice the Sun gear is also this housing is also a planet carrier and so
we've got the ring gear for under drive gear set that's going to fit on here and the B3 brake
is going to grab that so if we put all this together properly and get everything lined up
go get
get her stickers line up there we go get our all our labels lined up so we can do some gear
ratio calculations this housing here actually is splined to the input from the engine and we've
got a Sun gear that's for the under drive gear set and this entire assembly turns is
one assembly it's got clutches in there the C1 clucks in the C2 clutch that drive these
two pieces that we've already looked at the Sun gear and the ring gear and I'm going to
engage those with these little sheet metal screws just for demonstration purposes but
you'll put the whole housing on here try to keep everything lined up a little screw or
stick in the back put it in the V blocks with and we've got under drive gear set that fits
in place and the input from the engine and our Sun gear on the front side here