Kia Rio: Automatic Transaxle System / Clutch & Brake
Description and operation
| Description |
Brakes
The automatic transaxle (A4CF1) uses the low and reverse brake and the second brake. The low and reverse brake is fixed by the low and reverse annulus gear and overdrive planetary carrier.
The overdrive sun gear is held on the transaxle case by the second brake.
Clutch
The multiple clutches and the one way clutch are used as the transaxle device.
The retainer of each clutch is composed of the precision sheet metal parts to realize the productivity and the light weight.
The hydraulic centrifugal oil pressure balance device places inside the clutch assembly.
Generally the oil remained in the piston oil pressure chamber pushes the piston by the centrifugal force. But to prevent the piston from being pushed, the oil filled in between the piston and the return spring retainer occurs the centrifugal force and both of the power is offset so that the piston don't move. In result, it improves the durability and the shift control ability.
| 1. |
Underdrive Clutch The driving force of input shaft is delivered to the underdrive sun gear. The operating oil pressure in the underdrive clutch components operates between the piston and the retainer and pushes the piston to the clutch discs to deliver the driving force from the retainer to the hub.
|
| 2. |
Reverse clutch and overdrive clutch The reverse clutch delivers the driving force of input shaft to the reverse sun gear. The overdrive clutch delivers the driving force of input shaft to the overdrive planetary carrier and the low and reverse annulus gear. The operating oil pressure of the reverse clutch operates between the reverse clutch retainer and reverse clutch piston and it has the whole overdrive clutch moved to deliver through the hub splines. |
Components and components location Components 1. Inhibitor switch 2. Transaxle support bracket 3. Input speed sensor 4.
Other information:
Kia Rio 2017-2023 YB Service Manual: Evaporator Temperature Sensor
Description and operation Description The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator freezing by excessive cooling. Repair procedures Inspection 1.
Kia Rio 2017-2023 YB Service Manual: Cluster Ionizer (FATC only)
Description and operation Description The cluster ionizer helps to clean up odors in the vehicle or from the air-conditioner system. When the ignition switch ON, the inoizer runs a "CLEAN" mode and then a "ION" mode, switching every about 15 minutes.
Categories
- Manuals Home
- Kia Rio Owners Manual
- Kia Rio Service Manual
- Emission Control System
- Cooling System
- Cooling System
- New on site
- Most important about car
