Hyundai 20G-7, Service Manual

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3-6
INSTALLATION VIEW
1
2
3 4 5 6 7
8
20D7PT05
2)
1 Torque converter
2 Temperature sensor
3 Control valve
4 Parking brake link lever
OPERATION
The flywheel of engine transmits a power to torque converter through flexible plate.
The torque converter consists of an impeller wheel connected to the input side, a turbine connected
to the output side and a stator wheel.
The power delivered from engine make the impeller wheel of the torque converter revolve, an
impeller blade generate a fluid energy through being full of fluid in torque converter, this energy give
torque to turbine wheel.
Flow of the fluid flowing through revolving turbine wheel is changed by stator, this course causes
opposite torque at stator and it is added to the turbine.
As the result of this, the output torque brings torque increase within the compass of stall capability.
When the truck starts running or goes to the uphill, a torque converter transmits a torque increased
against engine torque to power transmission system of the transport.
When the truck runs at regular speed without increase speed, high torque is not required and
output torque is gradually reduced.
Since the engine and transmission are connected through the fluid, return vibrations and shocks
from the drive axle is absorbed, safety of the transmission is secured.
Whether or not the truck travels, the engine continually operates and torque is converted
automatically according to load.
This system makes the drive operation much easier and work can be performed much more
efficiently.
Output power of the torque converter is transmitted to the input shaft, forward clutch or a reverse
clutch works according to gear choice of a driver.
The clutch power chosen at this time is connected to the output gear through the clutch gear.
3)
5 Oil level pipe and dipstick
6 Air
breather
7 Transmission oil filter
8 Transmission output (Universal joint link part)