2ZR-FXE (ENGINE MECHANICAL): CAMSHAFT: REMOVAL; 2023 - 2025 MY Corolla Corolla HV [11/2022

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM1000000028RAB
Model Year Start: 2023	Model: Corolla	Prod Date Range: [11/2022 - ]
Title: 2ZR-FXE (ENGINE MECHANICAL): CAMSHAFT: REMOVAL; 2023 - 2025 MY Corolla Corolla HV [11/2022 - ]

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 camshaft 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	Link
Replacement of throttle body assembly Replacement of camshaft (for intake or exhaust camshaft) Replacement of camshaft timing gear assembly Replacement of ignition coil assembly	Inspection After Repair	Poor idle, etc. Engine start function, etc.

HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when vehicle is driven

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Front Camera System	Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.

PROCEDURE

1. REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY

Click here

2. DRAIN ENGINE COOLANT (for Engine)

Click here

3. REMOVE WINDSHIELD WIPER MOTOR AND LINK

Click here

4. REMOVE NO. 1 HEATER AIR DUCT SPLASH SHIELD SEAL

Click here

5. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY

Click here

6. DISCONNECT FLOOR SHIFT TRANSMISSION CONTROL SELECT CABLE

(a) Remove the bolt to disconnect the floor shift transmission control select cable from the cylinder head cover sub-assembly.

7. DISCONNECT NO. 2 VENTILATION HOSE

Click here

8. REMOVE IGNITION COIL ASSEMBLY

Click here

9. REMOVE CAMSHAFT POSITION SENSOR

Click here

10. DISCONNECT ENGINE WIRE

(a) Disconnect the 3 connectors.

(b) Disengage the 4 clamps.

11. DISCONNECT FUEL VAPOR FEED HOSE

Click here

12. REMOVE EGR PIPE ASSEMBLY

Click here

13. DISCONNECT NO. 8 WATER BY-PASS HOSE

Click here

14. DISCONNECT NO. 9 WATER BY-PASS HOSE

Click here

15. REMOVE PURGE VALVE (PURGE VSV)

Click here

16. REMOVE FUEL VAPOR FEED PIPE

Click here

17. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY

Click here

18. REMOVE CYLINDER HEAD COVER GASKET

Click here

19. REMOVE SPARK PLUG TUBE GASKET

Click here

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

(a) Set the No. 1 cylinder to TDC (Compression).

Click here

(b) Place paint marks on the chain sub-assembly in alignment with the timing marks on the camshaft timing gear assembly and camshaft timing sprocket.

*a	Paint Mark
*b	Timing Mark

21. REMOVE NO. 2 CHAIN VIBRATION DAMPER

(a) Using SST, remove the 2 bolts and No. 2 chain vibration damper from the No. 1 camshaft bearing cap.

SST: 09961-00950

22. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY

Click here

23. REMOVE CAMSHAFT TIMING SPROCKET

(a) While holding the hexagonal portion of the No. 2 camshaft with a wrench, remove the bolt with SST and 14 mm union nut wrench.

SST: 09961-00950

*a	14 mm Union Nut Wrench
*b	Hold
*c	Turn

(b) While removing the chain sub-assembly, pull out the camshaft timing sprocket horizontally and then upward.

24. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY

Click here

25. REMOVE CAMSHAFT BEARING CAP

(a) Uniformly loosen and remove the 10 bolts in the order shown in the illustration.

NOTICE:

Do not loosen the other 10 bearing cap bolts in this step.

HINT:

Arrange the removed parts in such a way that they can be reinstalled to their original locations.

(b) Remove the bolts and camshaft bearing caps in the order shown in the illustration. Immediately after removing each camshaft bearing cap, install service bolts and spacers in the order shown in the illustration.

*a	The removal order of the parts	*b	The installation order of the service bolts and spacers for temporarily tightening the camshaft housing sub-assembly
*c	Service bolt and spacer (Used to temporarily secure the camshaft housing sub-assembly)	-	-

Torque:

27 N·m {275 kgf·cm, 20 ft·lbf}

NOTICE:

If the bolts are loosened all at once, seal packing on the camshaft housing sub-assembly and cylinder head sub-assembly may separate, resulting in oil leaks. Therefore, be sure to install the service bolts and spacers to one camshaft bearing cap at a time.
Do not install the camshaft bearing caps when installing the service bolts and spacers.

HINT:

Arrange the removed parts in such a way that they can be reinstalled to their original locations.
Part number for the service bolt used to temporarily secure the camshaft housing sub-assembly: 91551-G0875 (15 bolts)
Part number for the spacer used to temporarily secure the camshaft housing sub-assembly: 90387-12048 (15 spacers)

26. REMOVE NO. 2 CAMSHAFT

(a) Remove the No. 2 camshaft from the camshaft housing sub-assembly.

27. REMOVE CAMSHAFT

(a) Hold up the chain sub-assembly and remove the camshaft from the camshaft housing sub-assembly.

(b) Suspend the chain sub-assembly with a string or equivalent.

28. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY

(a) Secure the hexagonal portion of the camshaft in a soft jaw vise.

(b) Remove the bolt and camshaft timing gear assembly.

NOTICE:

Before removing the camshaft timing gear assembly, make sure that the lock pin has been released.
Do not remove the other 4 bolts.
Keep the camshaft timing gear assembly horizontal while removing it from the camshaft.
If the camshaft timing gear assembly is to be reused, be sure to install it with the lock pin released.

*a	Do not remove

29. REMOVE NO. 1 CAMSHAFT BEARING

Click here

30. REMOVE NO. 2 CAMSHAFT BEARING

Click here