Hyundai Palisade (LX2): Hydraulic System / Valve Body

Hyundai Palisade (LX2) 2020-2026 Service Manual / Automatic Transaxle System (A8LF1) / Hydraulic System / Valve Body

Description and operation

Description
•
The valve body mounted is inside the transaxle.
•
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.

Hyundai Palisade. Description and operation

Repair procedures

Removal
Hyundai Palisade. Repair procedures   
•
When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
•
Automatic transaxle is composed of delicate components. Be careful not to cause any damage on the component in the course of assembly and disassembly.
•
Maintain clean condition so that foreign substance does not get into the automatic transaxle.
•
Use a coated apron, latex gloves, and stainless tray to prevent foreign substance from getting into the transaxle.
•
Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the battery and battery tray.
(Refer to Engine Electrical System - "Battery")
3.
Remove the air duct and air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
4.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
5.
Drain the coolant.(If equipped ATF warmer)
(Refer to Engine Mechanical System - "Coolant")
6.
Loosen the drain plug (A) and reinstall the drain plug after draining ATF totally.
Tightening torque :
33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
•
Replace the gasket before reinstalling the drain plug.
7.
Loosen the fixing bolt (A) and then removing the bracket.
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

Hyundai Palisade. Repair procedures
8.
Loosen the fixing bolts (A) and then removing the bracket.
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

Hyundai Palisade. Repair procedures
9.
Separate the ATF cooler hose (A).

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
•
Carefully install the clamp not to damage the hose.
•
Install the clamp in a correct direction not to be interfered with other parts.
•
After the installation, start the engine and then check if there are any leakages from the hose.
10.
Loosen the upper bolts (A) of the valve body cover.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

Hyundai Palisade. Repair procedures
11.
Remove the valve body cover (A) after removing the bolts.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)
Hyundai Palisade. Repair procedures   
•
Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
•
Replace the gasket (A) before reinstalling the valve body cover.
•
After the installation, start the engine and then check if there are any leakages from the valve body cover.

Hyundai Palisade. Repair procedures
12.
Loosen the bolts and then Separate the main harness (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb-ft)

Hyundai Palisade. Repair procedures
13.
Remove the valve body assembly (A).
Tightening torque :
(A) 9.8 - 11.8 N.m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb-ft)

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
•
Attach the manual pin (B) to the detent lever (A) and assemble the valve body.

Hyundai Palisade. Repair procedures
Installation
1.
To install, reverse the removal procedures.
2.
The existing valve body cover gasket (A) must be replaced with a new one. (Do not reuse it.)

Hyundai Palisade. Repair procedures
3.
Perform the procedures below after in replacing the valve body assembly.
4.
Refill the automatic transaxle with fluid.
(Refer to Hydraulic System - "Fluid")
5.
Add the coolant. [In case by ATF warmer apply]
(Refer to Engine Mechanical System - "Coolant")
6.
Clear the diagnostic trouble codes (DTC) using the diagnostic tool. Disconnecting the battery negative terminal will not clear the DTCs. Clear DTCs using the diagnostic tool at all times.
7.
Reset the automatic transaxle adaptive values using the diagnostic tool.

Hyundai Palisade. Repair procedures
8.
Perform the oil pressure characteristics input procedure using the diagnostic tool.

Hyundai Palisade. Repair procedures
9.
Perform the TCM adaptive values learning procedure.
(Refer to Automatic Transaxle Control System - "Repair procedures")
10.
After installing, check for leakage of fluid from hose connection during engine start.

    Repair procedures Removal 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2.

    Description and operation Description • Torque converter control solenoid valve (T/CON_VFS) is attached to the valve body.

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