This is a demonstration of the power flow through the Chrysler nag one that's NAG1 five-speed
Automatic transmission this transmission is made by Mercedes Benz and is also known as
the W5A580 transmission this transmission has three planetary gear sets in it to achieve the
five forward gears in one reverse gear there's a simple planetary gear set in the front and the
Simpson gear set in the rear the Simpson has a common Sun gear as far as components with this
transmission we have the input shaft from the engine the torque converter and the turbine in
the engine which turns our input shaft or turbine shaft that turbine shaft connects to the annulus
gear or ring gear in the front planetary gearset we have a B1 brake that's down in this housing
here it's also connected to an F1 Sprag if you recall a Sprag only rotates in one direction and
locks up in the other direction so the Sprag is going to lock up during acceleration in
freewheel during deceleration the B1 brake in the F1 sprag connect to the front Sun gear we
have a K1 clutch that's underneath this housing here that connects these two housings together
that K1 clutch is connected to the front planet carrier and the rear annulus gear and then down
underneath this lower housing here we have a K2 clutch that's connected to a center annulus gear
and rear planet carrier this aluminum housing here extends up underneath here also so the
carrier is this big long piece we have planet the planet gears themselves in the middle here
and we have a B3 break that's going to apply and stop this carrier from rotating in certain gears
in Reverse we have a K3 clutch back here that is connected to the rear Sun gear in the center Sun
gear of our Simpson gear set we have a B2 break it's going to grab this housing and keep it from
rotating and both of the K3 clutch and the B2 brake are also connected inside to an F2 Sprag so
there's two spreads F1 is brag F2 Sprag that holds well accelerating and then our output shaft here
is connected to the center planet carrier and then on the output shaft we've got our parking gear our
parking pawl is a log that's going to come in and grab this keep it from rotating which keeps the
drive chef and rotating it stops the vehicle for moving we have our output flans that connects to
the drive shaft to propel the vehicle so what I'd like to do is take you through these five
forward gear ranges and reverse and show you which clutches are applied which ones are released will
do the gear ratios will count the number of input turns versus the output terms and see if we can
get all our gears for this demonstration so for first gear we apply the B1 brake which is down
in here in this demonstration I'm going to use the screwdriver and just wedge it in place which
will hold that housing from turning the same housing that the B1 brake would apply in hold
we're going to hold the B2 break from turning we have the K3 clutch applied which connects it to
the same B2 brake housing so I'm going to hold those two still we're going to turn the input
shaft and we're going to expect to get three point five nine terms of the input to one turn of the
output so here we go here's one turn two terms three terms and a half so three point five nine
terms of the input to one term the output now for second gear will release the B1 break so I'll take
that screwdriver out and you get our paint marks lined up again there we go and now we'll keep the
B2 brake applied so we'll hold this now we have the K1 clutch applied well the K1 clutch is what
connects these two houses together so in this demonstration I've just got a little sheet metal
screw I'm going to run in here that will lock those two together and that does the same job
that the clutch the K1 clutch would do that's down underneath this housing if I were able to actually
apply it for this demonstration we have the K3 clutch applied back here which just like in first
gear we're going to lock these two together and now we should get a gear ratio of two point one
nine terms so two and a fifth terms input to one turn of the output so here we go here's one turn
at the input two turns of the input and about a fifth 2.19 turns in one turn out that's our second
gear ratio all right let me line our marks back up now and we will shift to third gear for third
gear we keep the B2 brake applied so we'll hold it from turning we keep the K1 clutch applied but now
we're going to apply the K2 clutch which is down underneath here and it's going to connect this
housing to this planet carrier and I'm going to do that with a different sheet metal screw so I'm
going to run that in so now we've got everything set up for third gear and I'm going to hold the
B2 break the K1 clutch is applied the K2 clutch is applied and we should get one point four turns of
the input to one turn of the output so here we go here's one turn of the input and not quite a half
one point four turns in one turn out that gives us fourth I'm sorry third gear one point four two one
now to go to fourth gear we're going to release that B3 break we'll keep the K1 clutch applied
that hooks these two housings together we'll keep the K2 clutch applied which connects this housing
to the planet carrier and now we will apply the K3 clutch which connects these two housings together
but this time we're not stopping them we're just connecting them connecting them together so that
they can rotate together to do that in this demonstration I've just got a paper towel I'm
going to shove in here and it's going to wedge in and hold those two pieces together just like that
the clutch would if it were in there and applied so now those two pieces are locked together for
fourth gear we've got a gear ratio of one turn in equals one turn out let's see I didn't line
up our yellow marks but we'll just use this handle here and our yellow mark here one turn
in equals one turn out so that's direct drive through this transmission which is fourth gear
alright to go to fifth gear we're going to release the K1 clutch so we're going to unlock these twos
when we turn it around here get this screw out of here so the K1 clutch is released will keep
the K2 clutch applied which it already is the K3 clutch will be applied which it already is
and the F1 Sprag will hold but now for fifth gear we applied the B1 brake remember the B1
breaks up here so now I'll take my screwdrivers wedge it back in place and now we should get
0.83 turns in to one turn out and let's see let me get the
paint marks lined up markings right there okay here we go so
we've got one full turn out right now but we have not gone one full turn around so this
is overdrive we've got point eight three turns in to one turn out that is our fifth gear now
to go to reverse will keep the beef or the B1 brake applied will apply the B3 brake which is
a planet carrier and if you recall anytime we hold the planet carrier still that forces the
annulus gear or ring gear and the Sun gear to turn office of directions of each other we're
going to release the B2 brakes when we get this screw out of this we're going to keep
the K3 clutch applied which is our paper towel in here and let's get our marks lined up there
we go now our reverse gear ratio is three point one six two one I'm going to hold the B3 break
I'm going to turn the input shaft direction the engine normally turns and notice the output shaft
will turn backwards so here's one two three point one six three and a fifth turns but
the input to one turn of the output for reverse so this has been a demonstration of the power
flow through NAG1 automatic transmission that's used in Chrysler vehicles with the