Hydraulic System - 2.0L - Optima: Overview Kia Optima III 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 under cover (A).
2. Remove the drain plug (A) and reinstall the drain plug after draining ATF totally. Tightening torque: 38.2 ~ 48.1 N.m (3.9 ~ 4.9 kgf.m, 28.2 ~ 35.4 lb-ft) NOTE: Replace the gasket before reinstalling the drain plug.
3. Air cleaner assembly and air duct. (Refer to "INTAKE & EXHAUST SYSTEM - 2.0L ".)
4. Battery and battery tray. (Refer to "CHARGING SYSTEM - 2.0L ".)
5. Remove the wiring bracket (B).
6. Remove the air breather hose (A) and valve body cover (B). Tightening torque: 13.7 ~ 15.7 N.m (1.4 ~ 1.6 kgf.m, 10.1 ~ 11.6 lb-ft)
7. Remove the solenoid valve (B) connector and the oil temperature sensor (A).
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. Install in the reverse order of removal. NOTE: Adding Automatic Transaxle Fluid (ATF). (Refer to «HYDRAULIC SYSTEM (FLUID)»(ref-675199-S09892180042014120400000) ) Perform TCM learning after replacing the valve body to prevent slow transaxle response, jerky acceleration and jerky startup. Refer to AUTOMATIC TRANSAXLE CONTROL SYSTEM (REPAIR PROCEDURES) . Use new valve body gasket (A).