CHERY AUTOMOBILE CO., LTD Automatic Transmission Fault Diagnosis Manual
2. Position 1 1
st
gear’s power transfer route
Brake D is also engaged. The planetary rack is locked by brake D. The engine’s brake is
realized by its idle rotation resistance.
3. 2
nd
gear’s power transfer route
Clutch A is engaged. The engine’s power is connected with rear sun gear through the torque
converter worm gear, worm and sun gear shaft. The front sun gear is locked by brake C and
C-shape brake band. 2
nd
gear one-way overrun clutch is in working status. The short planetary
gear brings along the long planetary gear, which rotates around the fixed front sun gear. Thus,
the engine’s power is transferred to the gear ring and output shaft.
4. 3
rd
gear’s power transfer route
About 41% of the engine’s power is torque transferred.
Clutch A is engaged. The engine’s power is connected with rear sun gear through the torque
orm and sun gear shaft.
About 59% of the engine’s power is mechanically transferred.
The rear sun gear and planetary rack rotate together. The planetary gear mechanism’s drive
ratio is 1:1. The output shaft is driven by the gear ring.
oute
the front long sun gear. The long
planetary gear rotates around front sun gear and brings along the output shaft through the gear
ring.
6. Back gear’s power transfer route
Clutch A engages. The worm is connected with the front sun gear through the brake drum.
Clutch D engages and the planetary rack is locked. Thus, the long planetary gear rotates
oppositely between the front sun gear and the gear ring to bring along the counterclockwise
ut shaft.
Parking brake
r could prevent the pawl’s error action. The vehicle is normally locked even under
aged.
converter worm gear, w
5. 4
th
gear’s power transfer r
Clutch A engages. The engine’s power comes directly from the input shaft to the planetary
rack. The brake band locks the braking drum so to lock
rotation of the outp
The parking brake only works when the control handle is in position P. The brake prevents the
vehicle’s rolling by mechanical method.
The parking brake pawl engages with the parking interlock gear. The interlock gear is again linked
with the driven shaft so to lock the vehicle’s drive gear.
When the control handle is in position P, the setup spring could ensure that brake pawl brakes the
terlock gear at the very moment that the vehicle rolls. in
The lock stabbe
great traction. The pawl slips on the parking gear at high-speed and only works normally at
low-speed.
Pull the handle to position P only when the vehicle has been stopped completely. Otherwise, the
braking pawl may be dam
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