2ZR-FXE (ENGINE MECHANICAL): CYLINDER HEAD GASKET: REMOVAL; 2020 MY Corolla Corolla HV [01/2019

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM100000001GMHO
Model Year Start: 2020	Model: Corolla	Prod Date Range: [01/2019 - 04/2020]
Title: 2ZR-FXE (ENGINE MECHANICAL): CYLINDER HEAD GASKET: REMOVAL; 2020 MY Corolla Corolla HV [01/2019 - 04/2020]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during cylinder head gasket removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed
Disconnect cable from negative auxiliary battery terminal	Perform steering sensor zero point calibration	Lane Control System
Disconnect cable from negative auxiliary battery terminal	Perform steering sensor zero point calibration	Pre-collision System
Replacement of inverter with converter assembly	Resolver learning	DTCs are stored Slight vibration at a vehicle speed of 5 km/h (3 mph) or less Shock or vibration during acceleration
Replacement of hybrid vehicle transaxle assembly	Resolver learning Initialize resolver
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on
Replacement of throttle body assembly Replacement of cylinder head sub-assembly Replacement of camshaft (for intake or exhaust camshaft) Replacement of camshaft timing gear assembly Replacement of fuel injector assembly Replacement of ignition coil assembly Replacement of EGR valve assembly Gas leak from exhaust system is repaired	Inspection After Repair	Poor idle, etc. Engine start function, etc.
Front wheel alignment adjustment	Clear zero point calibration data Perform yaw rate and acceleration sensor zero point calibration	DTCs are stored ABS warning light illuminates Brake warning light / yellow (minor malfunction) illuminates Slip indicator light illuminates VSC disabled or malfunctions

NOTICE:

After the power switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System (for HV Model))

PROCEDURE

1. INSTALL ENGINE TO ENGINE STAND

Click here

2. REMOVE ENGINE HANGERS

Click here

3. REMOVE WATER OUTLET

Click here

4. REMOVE EGR PIPE ASSEMBLY

Click here

5. REMOVE EGR VALVE ASSEMBLY WITH EGR COOLER

Click here

6. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR

Click here

7. REMOVE MANIFOLD STAY

Click here

8. REMOVE EXHAUST MANIFOLD (TWC: Front Catalyst)

Click here

9. REMOVE INTAKE MANIFOLD

Click here

10. REMOVE ENGINE OIL LEVEL DIPSTICK

Click here

11. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE

Click here

12. REMOVE WATER BY-PASS PIPE

Click here

13. REMOVE PURGE VALVE (PURGE VSV)

Click here

14. REMOVE FUEL VAPOR FEED PIPE

Click here

15. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY

Click here

16. REMOVE NO. 1 DELIVERY PIPE SPACER

Click here

17. REMOVE FUEL INJECTOR ASSEMBLY

Click here

18. REMOVE IGNITION COIL ASSEMBLY

Click here

19. REMOVE CAMSHAFT POSITION SENSOR

Click here

20. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY

Click here

21. REMOVE CYLINDER HEAD COVER GASKET

Click here

22. REMOVE SPARK PLUG TUBE GASKET

Click here

23. SET NO. 1 CYLINDER TO TDC (COMPRESSION)

Click here

24. REMOVE CRANKSHAFT PULLEY

Click here

25. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY

Click here

26. REMOVE TIMING CHAIN COVER OIL SEAL

Click here

27. REMOVE TIMING CHAIN COVER SUB-ASSEMBLY

Click here

28. REMOVE CHAIN TENSIONER SLIPPER

Click here

29. REMOVE NO. 1 CHAIN VIBRATION DAMPER

Click here

30. REMOVE NO. 2 CHAIN VIBRATION DAMPER

Click here

31. REMOVE CHAIN SUB-ASSEMBLY

(a) Using a wrench to hold the hexagonal portion of the camshaft, turn the camshaft timing gear assembly counterclockwise to loosen the chain sub-assembly between the camshaft timing sprocket and camshaft timing gear assembly.

*a	Loosen the Chain Sub-assembly
*b	Place the chain sub-assembly on the non-toothed portion of camshaft timing gear assembly

(b) With the chain sub-assembly loosened, separate the chain sub-assembly from the teeth of the camshaft timing gear assembly and place it on the non-toothed portion of camshaft timing gear assembly.

32. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY

Click here

33. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY

Click here

34. REMOVE CAMSHAFT TIMING SPROCKET

Click here

35. REMOVE CAMSHAFT BEARING CAP

Click here

36. REMOVE NO. 2 CAMSHAFT

Click here

37. REMOVE CAMSHAFT

Click here

38. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY

Click here

39. REMOVE NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY

Click here

40. REMOVE VALVE LASH ADJUSTER ASSEMBLY

Click here

41. REMOVE VALVE STEM CAP

Click here

42. REMOVE CYLINDER HEAD SUB-ASSEMBLY

Click here

43. REMOVE CYLINDER HEAD GASKET

(a) Remove the cylinder head gasket from the cylinder block sub-assembly.

44. INSPECT CYLINDER HEAD SET BOLT

Click here