Transmission Of Motion - Fiat Bravo Service Manual

Bravo-Brava
T R A N S M I S S I O N O F MOTION
The diagram below illustrates in a simplified manner the composition of the gear sets and control c o m -
ponents (clutches, brakes and free wheels) of the gearbox.
The same wiring diagram will be used on the following pages to illustrate the intervention of the various
control components during the different stages of operation.
The table below gives the conditions of activation of the components depending on the gear engaged
and the position of the selector lever.
Selector Selector
Gear engaged Gear engaged
lever lever
position position
P
R R Reverse (*)
Neutral (**)
N
D D D D
3 3 3
2 2 2
1 1
( 2 n d ) *
NOTE 0=Solenoidactivated
manual scale.
Copyright Fiat Auto
Auto transmission and differential
Control
solenoids
S2
S1
O
Park
O
o
o
Neutral
o
1st
o o
2nd
o
3rd
4th
o
1st
o o
2nd
o
3rd
o
1st
o o
2nd
o
3rd
o
( 1 s t ) *
o o
(*) Speed < 7 k m / h (**) Speed > 7 k m / h ( • ) Intermediate selection in
Components and operation
B 1 . Band brake
B2. Multiple disc brake
CO. Multiple disc clutch
C1. Multiple disc clutch
C2. Multiple disc clutch
C3. Multiple disc clutch
D. Clutch carrier drum
E. Motion input shaft
FO. Free wheel
F1. Free wheel
11. Main shaft motion output gear
12. Layshaft gear
K1. Crownwheel - epicyclic gear set P1
K2. Crownwheel - epicyclic gear set P2
5 1 . Sun gear - epicyclic gear set P1
52. Sun gear - epicyclic gear set P2
ST1. Planet gear for epicyclic gear
set P1
ST2. Inner planet gear for epicyclic
gear set P2
ST3. Outer planet gear for epicyclic
gear set P2
T 1 . P1 and P2 epicyclic gear train
carrier
U. Relay shaft
Clutches
C2 C3
S L C1
o
o o
o o
o
O o
o o
o o o
o o
o o
o o
o o o
o o
o o
o o o
o o
o o
21-27.
Brakes Free
wheels
B2 F1
CO B1
o
O
0
o
o 0
O
o
o
o
0
o
o o
0
FO
o
o
o
o
o
o
o
o
o
o
o
9