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Description
Lock-up System (cont'd)
Lock-up Clutch
1.
Operation
(clutch
on)
With the lock-up clutch
on,
the
fluid in the
chamber between
the torque
converter
cover
and
the lock-up piston
is
drained
off, and the
converter fluid
exerts pressure through the
piston against the torque converter cover.
As
a result, the
convert-
er turbine
is locked
to the converter
cover.
This bypasses
the
converter, placing the
vehicle
in direct
drive.
I
Power flow
I
The power
flows
by way
of:
Engine
~
Drive
plate
~
Torque converter
cover
~
Lock-up piston
~
Damper
spring
~
Turbine
~
Mainshaft
2.
Operation
(clutch
off)
LOCK-UP PISTON
O~I\IIPI;R
SPRING
TORQUE COINVI'ATFIL~II1I7.~:n
COVER
To ATF cooler
INLET
t
With the lock-up clutch off, the fluid flows in the reverse of "clutch on." As a result. the lock-up piston moves
away
from
the converter cover, and the torque
converter
lock-up is released.
I
Power flow
Engine
~
Drive plate
~
Torque
converter cover
~
Pump
~
Turbine
~
Mainshaft
14-40
TURBINE
PUMP
TORQUE CONVERTER
COVER
~
U~"#.
To ATF cooler
. .
. .
.
:
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Table of Contents
Troubleshooting
