Toyota Avalon (XX50): Camshaft

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Engine / 2gr-fks Engine Mechanical / Camshaft

Components

COMPONENTS

ILLUSTRATION

*1	VENTILATION HOSE	*2	PURGE VALVE (PURGE VSV)
*3	NO. 1 FUEL VAPOR FEED HOSE	*4	NO. 2 SURGE TANK STAY
*5	INTAKE AIR SURGE TANK ASSEMBLY	*6	AIR SURGE TANK TO INTAKE MANIFOLD GASKET
*7	VACUUM HOSE SUB-ASSEMBLY	*8	VACUUM HOSE
*9	NO. 2 AIR TUBE	-	-
	Nm (kgfcm, ft.*lbf): Specified torque	●	Non-reusable part
	Do not apply lubricants (to the threaded parts)	-	-

ILLUSTRATION

*1	WATER FILLER BRACKET	*2	WIRE HARNESS CLAMP BRACKET
*3	VACUUM PUMP ASSEMBLY	*4	IGNITION COIL ASSEMBLY
*5	ENGINE OIL LEVEL DIPSTICK GUIDE	*6	ENGINE OIL LEVEL DIPSTICK
*7	ENGINE OIL LEVEL DIPSTICK GUIDE O-RING	*8	NO. 2 O-RING
*9	NO. 3 O-RING	-	-
	Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping" : Nm (kgfcm, ft.*lbf)		Nm (kgfcm, ft.*lbf): Specified torque
●	Non-reusable part	-	-

ILLUSTRATION

*1	CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side of Bank 1)	*2	CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side of Bank 1)
*3	VVT SENSOR (for Intake Side of Bank 1)	*4	VVT SENSOR (for Exhaust Side of Bank 1)
*5	CYLINDER HEAD COVER SUB-ASSEMBLY	*6	CYLINDER HEAD COVER GASKET
*7	SPARK PLUG TUBE GASKET	*8	NO. 1 ENGINE COVER SUB-ASSEMBLY
*9	O-RING	-	-
	Nm (kgfcm, ft.*lbf): Specified torque	●	Non-reusable part
	Adhesive 1324	★	Precoated part

ILLUSTRATION

*1	CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side of Bank 2)	*2	CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side of Bank 2)
*3	VVT SENSOR (for Intake Side of Bank 2)	*4	VVT SENSOR (for Exhaust Side of Bank 2)
*5	CYLINDER HEAD COVER SUB-ASSEMBLY LH	*6	NO. 2 CYLINDER HEAD COVER GASKET
*7	SPARK PLUG TUBE GASKET	*8	O-RING
	Nm (kgfcm, ft.*lbf): Specified torque	●	Non-reusable part
	Adhesive 1324	★	Precoated part

ILLUSTRATION

*1	CAMSHAFT	*2	NO. 2 CAMSHAFT
*3	CAMSHAFT BEARING CAP (for Bank 1)	*4	NO. 2 CHAIN TENSIONER ASSEMBLY
*5	CAMSHAFT TIMING GEAR ASSEMBLY (for Bank 1)	*6	CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY (for Bank 1)
*7	CAMSHAFT TIMING GEAR BOLT (for Intake Side of Bank 1)	*8	NO. 2 CHAIN SUB-ASSEMBLY (for Bank 1)
*9	FUEL PUMP LIFTER HOUSING	*10	CAMSHAFT BEARING CAP OIL HOLE GASKET
*11	CHAIN SUB-ASSEMBLY (for Bank 1)	*12	NO. 1 CHAIN TENSIONER ASSEMBLY
*13	TIMING CHAIN COVER GASKET	*14	TIMING CHAIN COVER PLATE
*15	CAMSHAFT TIMING GEAR BOLT (for Exhaust Side of Bank 1)	*16	NO. 1 CAMSHAFT BEARING CAP
*17	NO. 2 CAMSHAFT BEARING CAP	-	-
	Nm (kgfcm, ft.*lbf): Specified torque	●	Non-reusable part

ILLUSTRATION

*1	NO. 3 CAMSHAFT SUB-ASSEMBLY	*2	NO. 4 CAMSHAFT SUB-ASSEMBLY
*3	CAMSHAFT BEARING CAP (for Bank 2)	*4	NO. 3 CHAIN TENSIONER ASSEMBLY
*5	CAMSHAFT TIMING GEAR ASSEMBLY (for Bank 2)	*6	CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY (for Bank 2)
*7	CAMSHAFT TIMING GEAR BOLT (for Intake Side of Bank 2)	*8	NO. 2 CHAIN SUB-ASSEMBLY (for Bank 2)
*9	CAMSHAFT BEARING CAP OIL HOLE GASKET LH	*10	CHAIN SUB-ASSEMBLY (for Bank 2)
*11	CAMSHAFT TIMING GEAR BOLT (for Exhaust Side of Bank 2)	*12	NO. 3 CAMSHAFT BEARING CAP
*13	NO. 4 CAMSHAFT BEARING CAP	-	-
	Nm (kgfcm, ft.*lbf): Specified torque	●	Non-reusable part

Installation

INSTALLATION

PROCEDURE

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

(a) Confirm that the timing mark (cutout) on the crankshaft pulley is aligned with the "0" timing mark of the timing chain cover assembly.

*a	Timing Mark (Cutout)
*b	"0" Timing Mark

2. SET CAMSHAFT TIMING GEAR ASSEMBLY (for Bank 2)

HINT:

Perform Inspection After Repair after replacing the camshaft timing gear assembly.

Click here

(a) Align the mark plate (yellow) with the timing mark of the camshaft timing gear assembly as shown in the illustration and install the No. 2 chain sub-assembly to the camshaft timing gear assembly.

*a	Timing Mark
*b	Mark Plate

(b) Install the chain sub-assembly to the camshaft timing gear assembly, and then set the camshaft timing gear assembly to the camshaft housing sub-assembly LH.

HINT:

Place the chain sub-assembly on the camshaft timing gear assembly but do not engage the teeth of the sprocket and the chain sub-assembly.
Be sure to install the camshaft timing gear assembly with the timing mark facing upward.

*a	Place on camshaft timing gear assembly

3. SET CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY (for Bank 2)

HINT:

Perform Inspection After Repair after replacing the camshaft timing exhaust gear assembly.

Click here

(a) Align the mark plate (yellow) with the timing mark of the camshaft timing exhaust gear assembly as shown in the illustration and install the No. 2 chain sub-assembly to the camshaft timing exhaust gear assembly.

*a	Timing Mark
*b	Mark Plate

(b) Set the camshaft timing exhaust gear assembly to the camshaft housing sub-assembly LH.

4. SET NO. 3 CHAIN TENSIONER ASSEMBLY

(a) While lifting up the camshaft timing exhaust gear assembly, pass the No. 3 chain tensioner assembly through the No. 2 chain sub-assembly and set it in place.

NOTICE:

Temporarily set the No. 3 chain tensioner assembly only, do not install the bolt.

5. INSTALL NO. 3 CAMSHAFT SUB-ASSEMBLY

HINT:

Perform Inspection After Repair after replacing the No. 3 camshaft sub-assembly.

Click here

(a) Clean the camshaft housing sub-assembly LH and No. 3 camshaft sub-assembly journals and apply engine oil to them.

(b) Make sure that the No. 1 valve rocker arm sub-assembly is installed as shown in the illustration.

*1	No. 1 Valve Rocker Arm Sub-assembly
*2	Valve Lash Adjuster Assembly
*3	Valve Stem
*4	Valve Stem Cap

(c) Align the straight pin of the No. 3 camshaft sub-assembly and the pin hole of the camshaft timing gear assembly, and install the No. 3 camshaft sub-assembly to the camshaft timing gear assembly.

NOTICE:

Be careful not to damage the contact surface of the camshaft timing gear assembly with the straight pin of the No. 3 camshaft sub-assembly.

*a	Pin Hole
*b	Straight Pin

(d) Check that there is no clearance between the camshaft timing gear assembly and No. 3 camshaft sub-assembly flange.

6. INSTALL NO. 4 CAMSHAFT SUB-ASSEMBLY

HINT:

Perform Inspection After Repair after replacing the No. 4 camshaft sub-assembly.

Click here

(a) Clean the camshaft housing sub-assembly LH and No. 4 camshaft sub-assembly journals and apply engine oil to them.

(b) Make sure that the No. 1 valve rocker arm sub-assembly is installed as shown in the illustration.

*1	No. 1 Valve Rocker Arm Sub-assembly
*2	Valve Lash Adjuster Assembly
*3	Valve Stem
*4	Valve Stem Cap

(c) Align the straight pin of the No. 4 camshaft sub-assembly and the pin hole of the camshaft timing exhaust gear assembly, and install the No. 4 camshaft sub-assembly to the camshaft timing exhaust gear assembly.

NOTICE:

Be careful not to damage the contact surface of the camshaft timing exhaust gear assembly with the straight pin of the No. 4 camshaft sub-assembly.

*a	Pin Hole
*b	Straight Pin

(d) Check that there is no clearance between the camshaft timing exhaust gear assembly and No. 4 camshaft sub-assembly flange.

7. SET CAMSHAFT BEARING CAP (for Bank 2)

(a) Clean the camshaft bearing caps and apply engine oil to them.

(b) Slide the camshaft timing gear assembly and camshaft timing exhaust gear assembly as shown in the illustration.

HINT:

To ensure there is sufficient space for installing the No. 3 camshaft bearing cap and No. 4 camshaft bearing cap, slide the camshaft timing gear assembly and camshaft timing exhaust gear assembly.

NOTICE:

Do not remove any of the replacement bolts and washers other than those on the No. 3 camshaft bearing cap and No. 4 camshaft bearing cap side.

*a	Replacement Bolt and Washer
*b	No. 3 Camshaft Bearing Cap
*c	No. 4 Camshaft Bearing Cap

(d) Temporarily set the No. 3 camshaft bearing cap and No. 4 camshaft bearing cap.

NOTICE:

Do not install the bolts of the No. 3 camshaft bearing cap and No. 4 camshaft bearing cap.
Do not install any camshaft bearing caps other than the No. 3 camshaft bearing cap and No. 4 camshaft bearing cap.

(e) Slide the camshaft timing gear assembly and camshaft timing exhaust gear assembly as shown in the illustration.

NOTICE:

Securely insert the straight pins of the No. 3 camshaft sub-assembly and No. 4 camshaft sub-assembly into the pin holes of the camshaft timing gear assembly and camshaft timing exhaust gear assembly.

8. TEMPORARILY INSTALL CAMSHAFT TIMING GEAR BOLT (for Intake Side of Bank 2)

(a) Check that there is no clearance between the camshaft timing gear assembly and No. 3 camshaft sub-assembly flange.

(b) Apply engine oil to the areas of the camshaft timing gear bolt shown in the illustration.

*a	Hold
	Turn

(d) Temporarily install the camshaft timing gear bolt to the camshaft timing gear assembly.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

NOTICE:

Installing the camshaft timing gear bolt while there is external force applied to the camshaft timing gear assembly could result in damage to the engine, so make sure that the camshaft bearing cap is not installed when temporarily installing the camshaft timing gear bolt.
Be careful not to damage the No. 3 camshaft sub-assembly, camshaft housing sub-assembly LH or spark plug tube with the wrench.
Make sure that the flange part of the camshaft timing gear bolt is directly contacting the camshaft timing gear assembly.

9. TEMPORARILY INSTALL CAMSHAFT TIMING GEAR BOLT (for Exhaust Side of Bank 2)

(a) Check that there is no clearance between the camshaft timing exhaust gear assembly and No. 4 camshaft sub-assembly flange.

(b) Apply engine oil to the areas of the camshaft timing gear bolt shown in the illustration.

*a	Hold
	Turn

(d) Temporarily install the camshaft timing gear bolt to the camshaft timing exhaust gear assembly.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

NOTICE:

Installing the camshaft timing gear bolt while there is external force applied to the camshaft timing exhaust gear assembly could result in damage to the engine, so make sure that the camshaft bearing cap is not installed when temporarily installing the camshaft timing gear bolt.
Be careful not to damage the No. 4 camshaft sub-assembly, camshaft housing sub-assembly LH or spark plug tube with the wrench.
Make sure that the flange part of the camshaft timing gear bolt is directly contacting the camshaft timing exhaust gear assembly.

10. INSTALL CAMSHAFT BEARING CAP (for Bank 2)

(a) Clean the camshaft bearing caps and apply engine oil to them.

(b) Check the marks and numbers on the camshaft bearing caps, and then remove the replacement bolts and washers in the order shown in the illustration. Immediately after removing the replacement bolts and washers in the location for a camshaft bearing cap, install the camshaft bearing cap with the bolts in the order shown in the illustration.

Torque:

Bolt (A) :

28 N·m {286 kgf·cm, 21 ft·lbf}

Bolt (B) :

16 N·m {163 kgf·cm, 12 ft·lbf}

NOTICE:

Be sure to follow the numerical order when performing this procedure.
Do not drop replacement bolts and washers into the cylinder head LH.

*a	Replacement Bolt and Washer
*b	Replacement Bolt and Washer Removal
*c	Part Installation
	Bolt (A)
	Bolt (B)

11. TIGHTEN CAMSHAFT TIMING GEAR BOLT (for Intake Side of Bank 2)

(a) Use a wrench to hold the hexagonal portion of the No. 3 camshaft sub-assembly.

*a	Hold
	Turn

(b) Tighten the camshaft timing gear bolt.

Torque:

95 N·m {969 kgf·cm, 70 ft·lbf}

NOTICE:

Be careful not to damage the No. 3 camshaft sub-assembly, camshaft housing sub-assembly LH or spark plug tube with the wrench.

12. TIGHTEN CAMSHAFT TIMING GEAR BOLT (for Exhaust Side of Bank 2)

(a) Use a wrench to hold the hexagonal portion of the No. 4 camshaft sub-assembly.

*a	Hold
	Turn

(b) Tighten the camshaft timing gear bolt.

Torque:

95 N·m {969 kgf·cm, 70 ft·lbf}

NOTICE:

Be careful not to damage the No. 4 camshaft sub-assembly, camshaft housing sub-assembly LH or spark plug tube with the wrench.

13. INSTALL NO. 3 CHAIN TENSIONER ASSEMBLY

(a) Install the No. 3 chain tensioner assembly with the bolt.

Torque:

21 N·m {214 kgf·cm, 15 ft·lbf}

14. CONNECT CHAIN SUB-ASSEMBLY (for Bank 2)

(a) Align the paint marks on the camshaft timing gear assembly and chain sub-assembly and install the chain sub-assembly to the camshaft timing gear assembly.

HINT:

If the paint marks are not aligned, align them by turning the No. 3 camshaft sub-assembly slightly.

*a	Paint Mark

15. SET CAMSHAFT TIMING GEAR ASSEMBLY (for Bank 1)

HINT:

Perform Inspection After Repair after replacing the camshaft timing gear assembly.

Click here

(a) Align the mark plate (yellow) with the timing mark of the camshaft timing gear assembly as shown in the illustration and install the No. 2 chain sub-assembly to the camshaft timing gear assembly.

*a	Timing Mark
*b	Mark Plate

(b) Install the chain sub-assembly to the camshaft timing gear assembly, and then set the camshaft timing gear assembly to the camshaft housing sub-assembly.

HINT:

Place the chain sub-assembly on the camshaft timing gear assembly but do not engage the teeth of the sprocket and the chain sub-assembly.
Be sure to install the camshaft timing gear assembly with the timing mark facing upward.

*a	Place on camshaft timing gear assembly

16. SET CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY (for Bank 1)

HINT:

Perform Inspection After Repair after replacing the camshaft timing exhaust gear assembly.

Click here

*a	Timing Mark
*b	Mark Plate

(b) Set the camshaft timing exhaust gear assembly to the camshaft housing sub-assembly.

17. SET NO. 2 CHAIN TENSIONER ASSEMBLY

(a) While lifting up the camshaft timing exhaust gear assembly, pass the No. 2 chain tensioner assembly through the No. 2 chain sub-assembly and set it in place.

NOTICE:

Temporarily set the No. 2 chain tensioner assembly only, do not install the bolt.

18. INSTALL CAMSHAFT

HINT:

Perform Inspection After Repair after replacing the camshaft.

Click here

(a) Turn the crankshaft clockwise until it is in the position shown in the illustration so that the chain sub-assembly can be installed easily.

HINT:

When turning the crankshaft, engine oil may spray out of the oil holes.

5 to 10°

(b) Clean the camshaft housing sub-assembly and camshaft journals and apply engine oil to them.

*1	No. 1 Valve Rocker Arm Sub-assembly
*2	Valve Lash Adjuster Assembly
*3	Valve Stem
*4	Valve Stem Cap

(d) Align the straight pin of the camshaft and the pin hole of the camshaft timing gear assembly, and install the camshaft to the camshaft timing gear assembly.

NOTICE:

Be careful not to damage the contact surface of the camshaft timing gear assembly with the straight pin of the camshaft.

*a	Pin Hole
*b	Straight Pin

(e) Check that there is no clearance between the camshaft timing gear assembly and camshaft flange.

19. INSTALL NO. 2 CAMSHAFT

HINT:

Perform Inspection After Repair after replacing the No. 2 camshaft.

Click here

(a) Clean the camshaft housing sub-assembly and No. 2 camshaft journals and apply engine oil to them.

(b) Make sure that the No. 1 valve rocker arm sub-assembly is installed as shown in the illustration.

*1	No. 1 Valve Rocker Arm Sub-assembly
*2	Valve Lash Adjuster Assembly
*3	Valve Stem
*4	Valve Stem Cap

(c) Align the straight pin of the No. 2 camshaft and the pin hole of the camshaft timing exhaust gear assembly, and install the No. 2 camshaft to the camshaft timing exhaust gear assembly.

NOTICE:

Be careful not to damage the contact surface of the camshaft timing exhaust gear assembly with the straight pin of the No. 2 camshaft.

*a	Pin Hole
*b	Straight Pin

(d) Check that there is no clearance between the camshaft timing gear assembly and No. 2 camshaft flange.

20. SET CAMSHAFT BEARING CAP (for Bank 1)

(a) Clean the camshaft bearing caps and apply engine oil to them.

(b) Slide the camshaft timing gear assembly and camshaft timing exhaust gear assembly as shown in the illustration.

HINT:

To ensure there is sufficient space for installing the No. 1 camshaft bearing cap and No. 2 camshaft bearing cap, slide the camshaft timing gear assembly and camshaft timing exhaust gear assembly.

NOTICE:

Do not remove any of the replacement bolts and washers other than those on the No. 1 camshaft bearing cap and No. 2 camshaft bearing cap side.

*a	Replacement Bolt and Washer
*b	No. 1 Camshaft Bearing Cap
*c	No. 2 Camshaft Bearing Cap

(d) Temporarily set the No. 1 camshaft bearing cap and No. 2 camshaft bearing cap.

NOTICE:

Do not install the bolts of the No. 1 camshaft bearing cap and No. 2 camshaft bearing cap.
Do not install any camshaft bearing caps other than the No. 1 camshaft bearing cap and No. 2 camshaft bearing cap.

(e) Slide the camshaft timing gear assembly and camshaft timing exhaust gear assembly as shown in the illustration.

NOTICE:

Securely insert the straight pins of the camshaft and No. 2 camshaft into the pin holes of the camshaft timing gear assembly and camshaft timing exhaust gear assembly.

21. TEMPORARILY INSTALL CAMSHAFT TIMING GEAR BOLT (for Intake Side of Bank 1)

(a) Check that there is no clearance between the camshaft timing gear assembly and camshaft flange.

(b) Apply engine oil to the areas of the camshaft timing gear bolt shown in the illustration.

*a	Hold
	Turn

(d) Temporarily install the camshaft timing gear bolt.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

NOTICE:

Installing the camshaft timing gear bolt while there is external force applied to the camshaft timing gear assembly could result in damage to the engine, so make sure that the camshaft bearing cap is not installed when temporarily installing the camshaft timing gear bolt.
Be careful not to damage the camshaft, camshaft housing sub-assembly or spark plug tube with the wrench.
Make sure that the flange part of the camshaft timing gear bolt is directly contacting the camshaft timing gear assembly.

22. TEMPORARILY INSTALL CAMSHAFT TIMING GEAR BOLT (for Exhaust Side of Bank 1)

(a) Check that there is no clearance between the camshaft timing exhaust gear assembly and No. 2 camshaft flange.

(b) Apply engine oil to the areas of the camshaft timing gear bolt shown in the illustration.

*a	Hold
	Turn

(d) Temporarily install the camshaft timing gear bolt.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

NOTICE:

Installing the camshaft timing gear bolt while there is external force applied to the camshaft timing exhaust gear assembly could result in damage to the engine, so make sure that the camshaft bearing cap is not installed when temporarily installing the camshaft timing gear bolt.
Be careful not to damage the No. 2 camshaft, camshaft housing sub-assembly or spark plug tube with the wrench.
Make sure that the flange part of the camshaft timing gear bolt is directly contacting the camshaft timing exhaust gear assembly.

23. INSTALL CAMSHAFT BEARING CAP (for Bank 1)

(a) Clean the camshaft bearing caps and apply engine oil to them.

Torque:

Bolt (A) :

28 N·m {286 kgf·cm, 21 ft·lbf}

Bolt (B), (C) :

16 N·m {163 kgf·cm, 12 ft·lbf}

NOTICE:

Be sure to follow the numerical order when performing this procedure.
Do not drop replacement bolts and washers into the cylinder head sub-assembly.

*a	Replacement Bolt and Washer
*b	Replacement Bolt and Washer Removal
*c	Part Installation
	Bolt (A)
	Bolt (B)
	Bolt (C)

24. TIGHTEN CAMSHAFT TIMING GEAR BOLT (for Intake Side of Bank 1)

(a) Use a wrench to hold the hexagonal portion of the camshaft.

*a	Hold
	Turn

(b) Tighten the camshaft timing gear bolt.

Torque:

95 N·m {969 kgf·cm, 70 ft·lbf}

NOTICE:

Be careful not to damage the camshaft, camshaft housing sub-assembly or spark plug tube with the wrench.

25. TIGHTEN CAMSHAFT TIMING GEAR BOLT (for Exhaust Side of Bank 1)

(a) Use a wrench to hold the hexagonal portion of the No. 2 camshaft.

*a	Hold
	Turn

(b) Tighten the camshaft timing gear bolt.

Torque:

95 N·m {969 kgf·cm, 70 ft·lbf}

NOTICE:

Be careful not to damage the No. 2 camshaft, camshaft housing sub-assembly or spark plug tube with the wrench.

26. INSTALL NO. 2 CHAIN TENSIONER ASSEMBLY

(a) Install the No. 2 chain tensioner assembly with the bolt.

Torque:

21 N·m {214 kgf·cm, 15 ft·lbf}

27. CONNECT CHAIN SUB-ASSEMBLY (for Bank 1)

(a) Align the paint marks on the camshaft timing gear assembly and chain sub-assembly and install the chain sub-assembly to the camshaft timing gear assembly.

HINT:

If the paint marks are not aligned, align them by turning the camshaft slightly.

*a	Paint Mark

28. INSTALL NO. 1 CHAIN TENSIONER ASSEMBLY

(a) Turn the crankshaft counterclockwise 30° past the "0" timing mark, and then turn it clockwise to align the notch with the "0" timing mark.

(b) Turn the crankshaft slightly to eliminate the slack in the chain sub-assembly.

HINT:

Make sure there is some slack in the chain sub-assembly around the area where the No. 1 chain tensioner assembly is installed.

(c) Turn the stopper plate clockwise to release the lock, and push the plunger deep into the No. 1 chain tensioner assembly.

*a	Stopper Plate
*b	Plunger

(d) Turn the stopper plate counterclockwise to set the lock, and insert a 1.0 mm (0.0394 in.) diameter pin into the hole of the stopper plate.

(e) Install the No. 1 chain tensioner assembly to the cylinder head sub-assembly with the 2 bolts.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

(f) Remove the 1.0 mm (0.0394 in.) diameter pin from the No. 1 chain tensioner assembly.

29. INSPECT VALVE TIMING

(a) Check the camshaft timing marks.

NOTICE:

Check each timing mark from a viewpoint directly in line with the center of the camshaft and the timing mark on each camshaft timing gear assembly and each camshaft timing exhaust gear assembly.
If the timing marks are checked from any other viewpoint, the valve timing may appear misaligned.

(b) Check that each camshaft timing mark is positioned as shown in the illustration.

Timing Mark

Viewpoint

HINT:

For the camshaft or No. 3 camshaft sub-assembly:

Be sure to check mark (A) at the point where marks (B), (C) and (D) are positioned in line. If the marks are checked from any other viewpoint, they cannot be checked correctly.

(d) Turn the crankshaft 2 revolutions, set the No. 1 cylinder to TDC/compression and check the timing marks again.

30. INSTALL TIMING CHAIN COVER PLATE

Click here

31. INSTALL SPARK PLUG TUBE GASKET

Click here

32. INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY LH

Click here

33. INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY

Click here

34. INSTALL CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side of Bank 2)

Click here

35. INSTALL CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side of Bank 2)

Click here

36. INSTALL CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side of Bank 1)

Click here

37. INSTALL CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side of Bank 1)

Click here

38. INSTALL WATER FILLER BRACKET

Click here

39. INSTALL WIRE HARNESS CLAMP BRACKET

Click here

40. INSTALL ENGINE OIL LEVEL DIPSTICK GUIDE

Click here

41. INSTALL VACUUM PUMP ASSEMBLY

Click here

42. INSTALL IGNITION COIL ASSEMBLY

Click here

43. INSTALL AIR SURGE TANK TO INTAKE MANIFOLD GASKET

Click here

44. INSTALL INTAKE AIR SURGE TANK ASSEMBLY

Click here

45. CONNECT PURGE VALVE (PURGE VSV)

Click here

46. CONNECT VENTILATION HOSE

Click here

47. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY

Click here

48. INSTALL ENGINE HANGERS

Click here

49. REMOVE ENGINE ASSEMBLY FROM ENGINE STAND

Click here

Removal

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
Battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane departure alert system (w/ Steering Control)
		Pre-collision system
		Intelligent Clearance Sonar System*1
		Lighting System (for Gasoline Model with Cornering Light)
	Memorize steering angle neutral point	Parking Assist Monitor System
	Memorize steering angle neutral point	Panoramic View Monitor System
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on
Replacement of ECM	ECU communication ID registration (Immobiliser system)	Engine start function
Replacement of throttle body with motor assembly Cleaning the deposits from the throttle body with motor assembly Replacement of camshaft (for intake or exhaust camshaft) Replacement of camshaft timing gear assembly Replacement of camshaft timing exhaust gear assembly Replacement of fuel injector assembly (for port injection) Replacement of fuel injector assembly (for direct injection) Replacement of fuel pump assembly (for high pressure side) Replacement of ignition coil assembly Air leaks from intake system Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.
Replacement of automatic transaxle assembly	Perform reset memory Input transaxle compensation code into ECM Perform road test to allow ECM to learn	Large shift shock Deterioration of fuel efficiency	for Initialization for Registration
Replacement of ECM (If transaxle compensation code read from ECM)	Perform reset memory*2 Transfer transaxle compensation code Perform road test to allow ECM to learn
Replacement of ECM (If transaxle compensation code not read from ECM)	Perform reset memory*2 Reset transaxle compensation code Perform road test to allow ECM to learn
Replacement of automatic transaxle fluid	ATF thermal degradation estimate reset	The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly
Replacement of ECM	Code registration (Smart Key System (for Start Function))	Wireless Door Lock Control System Smart Key System (for Entry Function) Smart Key System (for Start Function) Steering lock function
Suspension, tires, etc.	Measure ultrasonic sensor detection angle Ultrasonic sensor detection angle registration	Intelligent Clearance Sonar System Intuitive Parking Assist System
	Rear television camera assembly optical axis adjustment (Back camera position setting)	Parking Assist Monitor System	for Initialization for Calibration
	Parking assist ECU initialization Adjust steering angle Television camera assembly optical axis adjustment (Back camera position setting)	Panoramic View Monitor System	for Initialization for Calibration
	Perform headlight ECU sub-assembly LH initialization	Lighting system (for Gasoline Model with Cornering Light)
Front wheel alignment adjustment	Perform system variant learning and acceleration sensor zero point calibration.	VSC is disabled or malfunctions DTCs are output Slip indicator light illuminates ABS warning light illuminates

*1: When performing learning using the Techstream.
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*2: Not necessary when ECM replaced with new one.

PROCEDURE

1. INSTALL ENGINE ASSEMBLY TO ENGINE STAND

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2. REMOVE ENGINE HANGERS

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3. REMOVE THROTTLE BODY WITH MOTOR ASSEMBLY

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4. DISCONNECT VENTILATION HOSE

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5. DISCONNECT PURGE VALVE (PURGE VSV)

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6. REMOVE NO. 2 SURGE TANK STAY

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7. REMOVE INTAKE AIR SURGE TANK ASSEMBLY

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8. REMOVE AIR SURGE TANK TO INTAKE MANIFOLD GASKET

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9. REMOVE IGNITION COIL ASSEMBLY

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10. REMOVE VACUUM PUMP ASSEMBLY

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11. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE

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12. REMOVE WIRE HARNESS CLAMP BRACKET

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13. REMOVE WATER FILLER BRACKET

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14. REMOVE CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side of Bank 1)

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15. REMOVE CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side of Bank 1)

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16. REMOVE CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side of Bank 2)

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17. REMOVE CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side of Bank 2)

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18. REMOVE VVT SENSOR (for Intake Side of Bank 1)

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19. REMOVE VVT SENSOR (for Exhaust Side of Bank 1)

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20. REMOVE VVT SENSOR (for Intake Side of Bank 2)

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21. REMOVE VVT SENSOR (for Exhaust Side of Bank 2)

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22. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY

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23. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY LH

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24. REMOVE SPARK PLUG TUBE GASKET

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25. REMOVE TIMING CHAIN COVER PLATE

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

(a) Turn the crankshaft clockwise to align the timing mark (cutout) on the crankshaft pulley with the "0" timing mark on the timing chain cover assembly.

*a	Timing Mark (Cutout)
*b	"0" Timing Mark

(b) Check that the timing marks of the camshaft timing gear assemblies are aligned with the timing marks of the camshaft bearing caps as shown in the illustration.

HINT:

If the marks are not aligned, turn the crankshaft again to align the marks.

*A	for Bank 2
*B	for Bank 1
*a	Timing Mark
*b	Paint Mark

(c) Place paint marks on the timing marks and sprockets of each camshaft timing gear assembly and on the links of the chain sub-assembly.

HINT:

Be sure to place the paint marks on 2 links of the chain sub-assembly and on the sprockets of the camshaft timing gear assemblies at the locations of the timing marks of the camshaft timing gear assemblies.

27. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY

(a) Turn the crankshaft approximately 30° counterclockwise so that there is some slack in the chain sub-assembly.

HINT:

This prevents the valves and pistons from interfering with each other.

(b) Align the hole in the lever of the No. 1 chain tensioner assembly with the hole in the tensioner body as shown in the illustration, and then insert a pin with a diameter of 1.0 mm (0.0394 in.) into the hole.

NOTICE:

Check that the pin is locked.

*a	Lever Hole
*b	Tensioner Body
*c	Pin

(c) Turn the crankshaft clockwise to align the timing mark (cutout) on the crankshaft pulley with the "0" timing mark on the timing chain cover assembly.

*a	Timing Mark (Cutout)
*b	"0" Timing Mark

(d) Remove the 2 bolts and No. 1 chain tensioner assembly from the cylinder head sub-assembly.

NOTICE:

Do not drop the No. 1 chain tensioner assembly or bolts into the timing chain cover assembly.

28. DISCONNECT CHAIN SUB-ASSEMBLY (for Bank 1)

(a) Turn the crankshaft clockwise until it is in the position shown in the illustration so that there is some slack in the chain sub-assembly between the banks.

CAUTION:

As the camshafts may turn suddenly, do not touch the camshafts or camshaft timing gears.

HINT:

When turning the crankshaft, engine oil may spray out of the oil holes.

(b) Turn the crankshaft clockwise until it is in the position shown in the illustration so that the chain sub-assembly can be removed easily.

HINT:

When turning the crankshaft, engine oil may spray out of the oil holes.

5 to 10°

(c) Remove the chain sub-assembly from the sprocket of the camshaft timing gear assembly and set it on the camshaft timing gear assembly.

CAUTION:

As the camshaft may turn suddenly and pinch your fingers when the chain sub-assembly is removed, pinch the chain sub-assembly and lift it upward to remove it from the sprocket.

29. SEPARATE NO. 2 CHAIN TENSIONER ASSEMBLY

(a) Remove the bolt to separate the No. 2 chain tensioner assembly from the camshaft housing sub-assembly.

30. REMOVE CAMSHAFT TIMING GEAR BOLT (for Intake Side of Bank 1)

(a) Use a wrench to hold the hexagonal portion of the camshaft and remove the camshaft timing gear bolt from the camshaft timing gear assembly.

*a	Hold
	Turn

NOTICE:

Be careful not to damage the camshaft, camshaft housing sub-assembly or spark plug tube with the wrench.
If the camshaft timing gear bolt has been struck or dropped, replace it.

31. REMOVE CAMSHAFT TIMING GEAR BOLT (for Exhaust Side of Bank 1)

(a) Use a wrench to hold the hexagonal portion of the No. 2 camshaft and remove the camshaft timing gear bolt from the camshaft timing exhaust gear assembly.

NOTICE:

Be careful not to damage the No. 2 camshaft, camshaft housing sub-assembly or spark plug tube with the wrench.
If the camshaft timing gear bolt has been struck or dropped, replace it.

*a	Hold
	Turn

32. REMOVE CAMSHAFT BEARING CAP (for Bank 1)

(a) Slide the camshaft timing gear assembly and camshaft timing exhaust gear assembly as shown in the illustration.

(b) Remove the bolts and camshaft bearing caps in the order shown in the illustration. Immediately after removing a camshaft bearing cap, install replacement bolts and washers in the order shown in the illustration.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

NOTICE:

Do not install the camshaft bearing caps when installing replacement bolts and washers.
Be sure to follow the numerical order when performing this procedure.
Do not allow replacement bolts or washers to contact the camshaft.
Do not drop replacement bolts or washers into the cylinder head sub-assembly.

HINT:

Arrange the removed parts so that they can be reinstalled in their original locations.
Part number for replacement bolts: 91551-F0850 (9 bolts)
Part number for replacement washers: 90201-12028 (18 washers)

*a	Replacement Bolt and Washer
*b	Part Removal
*c	Replacement Bolt and Washer Installation

33. REMOVE NO. 2 CAMSHAFT

(a) While lifting up the camshaft timing exhaust gear assembly, remove the No. 2 chain tensioner assembly.

(b) Lift up the rear of the No. 2 camshaft so that it is at an angle.

34. REMOVE CAMSHAFT

(a) Lift up the rear of the camshaft so that it is at an angle.

(b) Pull the camshaft as shown in the illustration to remove it from the camshaft timing gear assembly.

35. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY (for Bank 1)

(a) Remove the camshaft timing exhaust gear assembly.

36. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY (for Bank 1)

(a) Remove the camshaft timing gear assembly and No. 2 chain sub-assembly.

NOTICE:

Do not drop the chain sub-assembly into the gap between the engine and timing chain cover assembly.

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

37. DISCONNECT CHAIN SUB-ASSEMBLY (for Bank 2)

(a) Turn the crankshaft counterclockwise to align the timing mark (cutout) on the crankshaft pulley with the "0" timing mark on the timing chain cover assembly.

*a	Timing Mark (Cutout)
*b	"0" Timing Mark

(b) Remove the chain sub-assembly from the sprocket of the camshaft timing gear assembly and set it on the camshaft timing gear assembly.

CAUTION:

As the camshaft may turn suddenly and pinch your fingers when the chain sub-assembly is removed, pinch the chain sub-assembly and lift it upward to remove it from the sprocket.

38. SEPARATE NO. 3 CHAIN TENSIONER ASSEMBLY

(a) Remove the bolt to separate the No. 3 chain tensioner assembly from the camshaft housing sub-assembly LH.

39. REMOVE CAMSHAFT TIMING GEAR BOLT (for Intake Side of Bank 2)

(a) Use a wrench to hold the hexagonal portion of the No. 3 camshaft sub-assembly and remove the camshaft timing gear bolt from the camshaft timing gear assembly.

*a	Hold
	Turn

NOTICE:

Be careful not to damage the No. 3 camshaft sub-assembly, camshaft housing sub-assembly LH or spark plug tube with the wrench.
If the camshaft timing gear bolt has been struck or dropped, replace it.

40. REMOVE CAMSHAFT TIMING GEAR BOLT (for Exhaust Side of Bank 2)

(a) Use a wrench to hold the hexagonal portion of the No. 4 camshaft sub-assembly and remove the camshaft timing gear bolt from the camshaft timing exhaust gear assembly.

*a	Hold
	Turn

NOTICE:

Be careful not to damage the No. 4 camshaft sub-assembly, camshaft housing sub-assembly LH or spark plug tube with the wrench.
If the camshaft timing gear bolt has been struck or dropped, replace it.

41. REMOVE CAMSHAFT BEARING CAP (for Bank 2)

(a) Slide the camshaft timing gear assembly and camshaft timing exhaust gear assembly as shown in the illustration.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

NOTICE:

Do not install the camshaft bearing caps when installing replacement bolts and washers.
Be sure to follow the numerical order when performing this procedure.
Do not allow replacement bolts or washers to contact the camshaft.
Do not drop replacement bolts or washers into the cylinder head LH.

HINT:

Arrange the removed parts so that they can be reinstalled in their original locations.
Part number for replacement bolts: 91551-F0850 (8 bolts)
Part number for replacement washers: 90201-12028 (16 washers)

*a	Replacement Bolt and Washer
*b	Part Removal
*c	Replacement Bolt and Washer Installation

42. REMOVE NO. 4 CAMSHAFT SUB-ASSEMBLY

(a) While lifting up the camshaft timing exhaust gear assembly, remove the No. 3 chain tensioner assembly.

(b) Lift up the rear of the No. 4 camshaft sub-assembly so that it is at an angle.

(c) Pull the No. 4 camshaft sub-assembly as shown in the illustration to remove it from the camshaft timing exhaust gear assembly.

43. REMOVE NO. 3 CAMSHAFT SUB-ASSEMBLY

(a) Lift up the rear of the No. 3 camshaft sub-assembly so that it is at an angle.

(b) Pull the No. 3 camshaft sub-assembly as shown in the illustration to remove it from the camshaft timing gear assembly.

44. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY (for Bank 2)

(a) Remove the camshaft timing exhaust gear assembly.

45. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY (for Bank 2)

(a) Remove the camshaft timing gear assembly and No. 2 chain sub-assembly.

NOTICE:

Do not drop the chain sub-assembly into the gap between the engine and timing chain cover assembly.

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

Vacuum Switching Valve(for Engine Mounting)

Cylinder Block

See More:

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