Table of Contents
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AUTOMATIC TRANSMISSION
Hydraulic
Control Unitsnd
Valves
OIL CHANNEL
IDENTIFICATION
Oil Channels
in Case Front Face
The circuit
numbers shown
in
each
Hydraulic
Control Circuit
are
classified
as
follows
according
to the
function
Auxiliary
line pressure
13
Torque
converter
pressure
14
Governor pre
ure
15
Throttle
system
pressure
16 17 18 19
Pressure
source
of the line
7
Operating
line pressure for
friction elements
12 3 4 5 6 8 9
10
1112
AT106
Oil Channels
in
Oil
Pump
Oil Channels
in
Case
Face
r
o
9 0
Oil
pump
discharge
hole
7
Governor pressure 15
i
j
J
Torque
converter
0
0
f
i
pressure l4
0
Servo
release
Rear
clutch
pressure
10
Governor
feed pressure
1
pressure 1
Servo
tightening
o
0
pressure
9
1
1
lnl
Front
clutch
rr
I
I
Low
reverse
brake pressure
12f
pressure 11
U
0
0
Jj
J
o
P
sucti
e
Oil
pump
discharge
hole
7
Torque converter
pressure 14
q
Rear
clutch pressure
1
Front
clutch pressure 11
LOiiJ
u nm
P
suction hole
a
AT10S
AT107
MECHANICAL
OPERATION
In
the
3N71 B
automatic
transmission each
part
operates
as
shown
in the
foUowirig
table
at
each
gear
select
position
Gutch
Low
Band
servo
One
Range
Gear
Parking
ratio
reverse
way
pawl
Front
Rear
brake
Operation
Release
clutch
Park
on
on
Reverse
2
182
on
on
on
Neutral
Dl
Low
2
4 58
on
on
Drive
D2
Second
1458
on
on
D3
Top
1000
on
on
on
on
2
Second
1458
on
on
12
Second
1458
on
on
I
Low
2
4 58
on
on
The
low
reverse
brake is
applied
in
1
range to
prevent
free
wheeling
when
coasting
and allows
engine
braking
AT 5
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