Hydraulic System - 2.0L: Overview Kia Soul I рестайлинг

Description

The hydraulic system consists of oil, an oil filter, an oil pump, and a valve body (valves and solenoid valves). The oil pump is powered by the engine. ATF passes through the oil filter and gets distributed along the oil channels. The oil becomes highly pressurized as it exits the oil pump and passes through the line pressure valve before being fed to the clutch & brake control valve, clutch, and brakes. TCM controls the hydraulic pressure using solenoid valves and controls clutch and brake operations.

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The oil pump is built-in as a single unit with the 26 brake chamber. Rotation of the pump builds the hydraulic pressure needed for the lubrication of the various parts of the transaxle and operation of the clutch and brakes. The oil also circulates through the torque converter and the cooler.

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The valve body is essential to automatic transaxle control and consists of various valves used to control the oil feed from the oil pump. Specifically, these valves consist of pressure regulator valves, oil redirection valves, shift valves, and manual valves. The body also features electronic solenoid valves that ensure smooth gear changes.

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1. Remove the battery and the battery tray. (Refer to " «CLEANING»(ref-504528-S28871129982012092600000) .
2. Remove the under cover (A). Tightening torque: 6.9 ~ 10.8 N.m (0.7 ~ 1.1 kgf.m, 5.1 ~ 8.0 lb-ft)
3. Replace new gasket and the plug after draining the automatic transaxle fluid by removing the drain plug. (Refer to «Oil level Check»(ref-537304-S00240743582013032200000) .
4. Remove thd air breather hose (A).
5. Remove the valve body cover (B). Tightening torque: 13.7 ~ 15.7 N.m (1.4 ~ 1.6 kgf.m, 10.1 ~ 11.6 lb-ft)
6. Remove the plate and the detent spring (A) after removing the bolt. Tightening torque: 11.8 ~ 15.7 N.m (1.2 ~ 1.6 kgf.m, 8.7 ~ 11.6 lb-ft)
7. Remove the bolt (3ea) after disconnecting the solenoid valve (B) connector and the oil temperature sensor connector (A). Tightening torque: 9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
8. Remove the valve body assembly (A). Tightening torque: 9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

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1. Installation is the reverse of removal. NOTE: The gasket of the valve body gasket (A) use new one. Adding automatic transaxle fluid. (Refer to «Oil level Check»(ref-537304-S00240743582013032200000) . Perform TCM learning after replacing the automatic transaxle to prevent slow automatic transaxle response, jerky acceleration and jerky startup. (Refer to «BASIC INSPECTION PROCEDURE»(ref-504537-S31159981302012092600000) .

ISG system has a standard Mechanical Oil Pump(MOP) linked to the input shaft to generates oil pressure when input shaft rotates. ISG system also has an Electric Oil Pump(EOP). Because the ISG features Auto-Stop which starts and stops the engine as needed. The Auto-Stop feature prevents the Mechanical Oil Pump(MOP) from operating and building enough pressure for the transaxle to operate. When the vehicle comes to a stop with the engine off, Mechanical Oil Pump(MOP) cannot generate sufficient oil pressure during the initial startup (below 5 KPH) or during low speed driving.

For these reasons, the Electric Oil Pump(EOP) takes on this role as an additional device that can generate the required oil pressure when the vehicle comes to a stop or during low speed driving. The Electric Oil Pump(EOP) supplies oil pressure to the Under Drive Brake(UD/B).

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1. Disconnect the battery negative cable from the battery and then wait for at least 30 seconds.
2. Disconnect the Electric Oil Pump (EOP) connector (A).
3. Remove the under cover (A). Tightening torque: 6.9 ~ 10.8 N.m (0.7 ~ 1.1 kgf.m, 5.1 ~ 8.0 lb-ft)
4. Remove the Electric Oil Pump (B) by losening bolts (A-4ea). Tightening torque: 19.6 ~ 25.5 N.m (2.0 ~ 2.6 kgf.m, 14.5 ~ 18.8 lb-ft)