CHERY AUTOMOBILE CO., LTD Automatic Transmission Fault Diagnosis Manual
Control element
one-way overrun clutch is comprised of an outer racer, inner racer with a roller and one-way
them. The one-way overrun clutch could only transfer the torque along the
e-way overrun clutch.
P14 automatic transmission adopts a one-way overrun clutch at the 1
st
gear, which works
hich works together with brake C.
s an overrun gear between the
er and inner races. The inner and outer races could rotate freely. When the one-way overrun
nd if the inner and outer races are moving towards opposite
directions, the asymmetric overrun gear is pushed upwards vertically. Hence, the inner and outer
racers are locked to prevent them from rotating towards opposite directions.
one-way overrun clutch is installed inside a dedicated rack.
d brake
1.
2.
4.
The d by
g ferent loads.
r the power to the planetary gear mechanism. The brake C and D engages
inside the planetary gear mechanism. Due to the hydraulic control and
continuous lubrication, there is no friction during power transfer and mechanical friction on the
gearshift elements. Hence, regular adjustment is not necessary.
Brake band
The drum and hub are engaged through tensioning of the hydraulic cylinder’s control brake band in
order to lock the sun gear. Since there is no friction, the brake band could be used continuously.
He ent is not necessary.
converter worm gear and worm and sun gear shaft. The planetary rack is fixed by the one-way
overrun clutch’s locking in the counterclockwise direction. The rear sun gear brings along the
short planetary gear and transfers the power to the long planetary gear ring and output shaft.
The
overrun clutch between
rotation direction and rotates freely at another direction.
The vehicle could shift gear smoothly without any obstruction by on
4H
together with brake D, and also at 2
nd
gear, w
One-way overrun clutch
When the one-way overrun clutch rotates at a free direction, there i
out
clutch rotates in its engaged direction a
The
Clutch an
The clutch and brake are mainly comprised of following parts:
Drum
Piston
3. Friction disk, middle retaining ring and steel piece
Diaphragm spring
gearshift element is engaged or disengage the hydraulic fluid control clutch between the
drum and piston. When the oil pressure is reduced, the piston returns to its position by the
diaphragm spring.
earshift elements execute gearshift in accordance with difThe
Clutch A, B and E transfe
or disengages the elements
nce, regular adjustm
Automatic transmission’s power transfer
1. Position D 1
st
gear’s power transfer route
Clutch A is engaged. The engine’s power is connected with rear sun gear through the torque
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