Hyundai Elantra: Engine And Transaxle Assembly / Engine And Transaxle Assembly Repair procedures

Hyundai Elantra AD (2016-2020) Service Manual / Engine Mechanical System / Engine And Transaxle Assembly / Engine And Transaxle Assembly Repair procedures

Removal

•	Use fender covers to avoid damaging painted surfaces.

•	To avoid damage, unplug the wiring connectors carefully while holding the connector portion.

•	Mark all wiring and hoses to avoid misconnection.

•	For release the fuel system pressure before remove the engine assembly, start the engine without fuel pump relay. And then turn off the ignition switch after engine stops.

1.	Remove the engine cover. (Refer to Engine And Transaxle Assembly - "Engine Cover")

2.	Remove the air duct and air cleaner assembly. (Refer to Intake And Exhasut System - "Air Cleaner")

3.	Remove the battery. (Refer to Engine Electrical System - "Battery")

4.	Remove the ECM (Engine Control Module). (Refer to Engine Control / Fuel System - "Engine Control Module (ECM)")

5.	Remove the battery tray. (Refer to Engine Electrical System - "Battery")

6.	Remove the engine room under cover. (Refer to Engine And Transaxle Assembly - "Engine Room Under Cover")

7.	Drain the engine coolant. (Refer to Cooling System - "Coolant")

8.	Disconnect the radiator upper hose (A).

Disconnect the Radiator lower hose quick connector (A).

•	When the hose detached, remove the holder clip (A) and then disconnect the quick connector.

10.	Recover the refrigerant and then remove the high pressure pipe and low pressure pipe. (Refer to Heating, Ventilation Air conditioning - "Compressor")

11.	Remove the transaxle wire harness connectors and control cable from the transaxle. (Refer to Automatic Transaxle System - "Automatic Transaxle")

12.	Disconnect the brake booster vacuum hose (A).

13.	Disconnect the heater hoses (A).

14.	Disconnect the fuel hose (A) and the purge control solenoid valve (PCSV) hose (B).

15.

Disconnect the wiring harness from the engine room.

(1)	Remove the ground bolt (A).

(2)	Disconnect the battery negative terminal connector (B).

(3)	Disconnect the front harness connector (C).

(4)	Disconnect the PCB block (D).

(5)	Disconnect the wiring protector (E).

(6)	Disconnect the battery positive wirings (A).

(7)	Disconnect the wiring protector (B).

16.	Remove the front muffler. (Refer to Intake And Exhaust System - "Muffler")

17.	Remove the steering U-joint mounting bolts. (Refer to Steering System - "Steering Column and Shaft")

18.

Remove the roll rod bracket (A).

Tightening torque

Bolts (B):

49.0 ~ 63.7 N.m (5.0 ~ 6.5 kgf.m, 36.2 ~ 47.0 lb-ft)

Nut (C):

107.9 ~ 127.5 N.m (11.0 ~ 13.0 kgf.m, 79.6 ~ 94.0 lb-ft)

19.

Remove the roll rod mounting support bracket (A).

Tightening torque:

49.0 ~ 68.6 N.m (5.0 ~ 7.0 kgf.m, 36.2 ~ 50.6 lb-ft)

20.	Remove the sub frame. (Refer to Suspension system - "Sub frame")

21.	Support the engine and transaxle assembly with a floor jack.

22.

Disconnect the ground cable (A).

Tightening torque :

10.8 ~ 13.7 N.m (1.1 ~ 1.4 kgf.m. 8.0 ~ 10.1 lb-ft)

23.

Remove the engine mounting support bracket (A).

Tightening torque :

Nut (B) : 88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)

Bolt, Nuts (C) : 58.8 ~ 73.5 N.m (6.0 ~ 7.5 kgf.m, 43.4 ~ 54.2 lb-ft)

24.

Disconnect the ground line (A).

Tightening torque:

10.8 ~ 13.7 N.m (1.1 ~ 1.4 kgf.m, 8.0 ~ 10.1 lb-ft)

25.	Remove the service cover (A).

26.

Remove the transaxle support bracket mounting bolts (A).

Tightening torque:

88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)

27.

Remove the engine and transaxle assembly by lifting vehicle.

•	Before removing the engine and transaxle assembly, make sure hoses and wire connectors are disconnected.

•	When removing the engine and transaxle assembly, be careful not to damage any surrounding parts or body components.

Installation

Installation is in the reverse order of removal.

Perform the following :

•	Adjust shift cable.

•	Adjust throttle cable.

•	Refill engine with engine oil.

•	Refill transaxle with fluid.

•	Refill radiator and reservoir tank with engine coolant.

•	Place heater control knob on "HOT" position.

•	Bleed air from the cooling system.

-	(Refer to Cooling System - "Coolant")

•	Clean battery posts and cable terminals with sandpaper assemble them, then apply grease to prevent corrosion.

•	Inspect for fuel leakage.

-	After assemble the fuel line, turn on the ignition switch (do not operate the starter) so that the fuel pump runs for approximately two seconds and fuel line pressurizes.

-	Repeat this operation two or three times, then check for fuel leakage at any point in the fuel line.

Engine Mounting Repair procedures

Removal and Installation Engine Mounting Bracket 1. Remove the engine room under cover. (Refer to Engine And Transaxle Assembly - "Engine Room Under Cover") 2. Install the jack under the edg ...

Timing System

...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: In Case of an Emergency While Driving
If the Engine Stalls While Driving Reduce your speed gradually, keeping a straight line. Move cautiously off the road to a safe place. Turn on your hazard warning flasher. Try to start the engine again. If your vehicle will not start, contact an authorized HYUNDAI dealer or seek other ...

Hyundai Elantra AD (2016-2020) Service Manual: Specifications
Specification ItemSpecificationUltrasonic sensorVoltage ratingDC 12VDetecting rangeF PAS : 100 / 60 /30cmR PAS : 120 / 60 /30cmOperation voltageDC 9 ~ 16VOperation currentMAX 350mAOperation temperature-30°C ~ +80°C (-22°C ~ +176°C)Operation frequency48 ± 5KHzNumber of sensors8EA ...