Tech Tips
Perform "Inspection After Repair" after replacing the camshaft, No. 2 camshaft, camshaft timing gear assembly, camshaft timing exhaust gear assembly or cylinder head sub-assembly Click here.
INSPECT CYLINDER HEAD BOLT
| *a | Measurement Point |
Using a vernier caliper, measure the diameter of the threads at the measurement point.
| Standard diameter |
|---|
| 10.85 to 11.00 mm (0.427 to 0.433 in.) |
| Minimum diameter |
|---|
| 10.6 mm (0.417 in.) |
| Measurement point (distance from the seat) |
|---|
| 106 mm (4.17 in.) |
Tech Tips
If the diameter is less than the minimum, replace the cylinder head bolt with a new one. Failure to do so may lead to engine damage.
If there is any thread deformation, replace the cylinder head bolt with a new one.
INSPECT CYLINDER HEAD SUB-ASSEMBLY
| *a | Cylinder Head Lower Side |
| *b | Intake Manifold Side |
| *c | Exhaust Manifold Side |
Using a precision straightedge and feeler gauge, measure the warpage of the contact surfaces where the cylinder head sub-assembly contacts the cylinder block sub-assembly and manifold.
| Maximum Warpage | ||||||||
|---|---|---|---|---|---|---|---|---|
|
If the warpage is more than the maximum, replace the cylinder head sub-assembly.
Using a dye penetrant, check the intake ports, exhaust ports and cylinder surface for cracks.
If cracked, replace the cylinder head sub-assembly.
INSTALL CYLINDER HEAD GASKET
| *1 | Cylinder Head Gasket |
| *2 | Cylinder Block Sub-assembly |
| *a | Lot No. |
| *b | 3.0 mm or more |
| *c | 20 mm or more |
|
Seal Packing |
|
Front |
Clean the cylinder block sub-assembly and cylinder head sub-assembly with solvent.
Apply a continuous line of seal packing to a new cylinder head gasket as shown in the illustration.
| Seal Packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
| Standard Seal Dimension |
|---|
| 3.0 to 7.0 mm (0.118 to 0.276 in.) wide and 3.0 mm (0.118 in.) or thicker |
Tech Tips
Apply at least 20 mm (0.787 in.) of seal packing from the inside edge of the protrusion of the cylinder block sub-assembly.
Note
Remove any oil from the contact surfaces.
Install the cylinder head gasket within 3 minutes and tighten the bolts within 15 minutes after applying seal packing.
Place the new cylinder head gasket on the cylinder block sub-assembly surface with the Lot No. stamp facing upward.
Note
Pay attention to the installation direction.
INSTALL CYLINDER HEAD SUB-ASSEMBLY
Tech Tips
The cylinder head bolts are tightened in 4 progressive steps.
Place the cylinder head sub-assembly on the cylinder block sub-assembly.
Note
Ensure that no oil is on the contact surface of the cylinder head sub-assembly.
Place the cylinder head sub-assembly on the cylinder block sub-assembly gently in order not to damage the gasket with the bottom part of the head.
Install the 10 plate washers to the 10 cylinder head bolts.
Apply a light coat of engine oil to the threads and under the heads of the cylinder head bolts.
Step 1:
Using a 10 mm bi-hexagon wrench, install and uniformly tighten the 10 cylinder head bolts in several steps, in the sequence shown in the illustration.
Note
Do not drop the plate washers for the cylinder head bolts into the cylinder head sub-assembly.
Step 2:
Tighten the cylinder head bolts again in the sequence shown in the illustration to make sure that they are tightened to the specified torque.
Step 3:
| *a | Paint Mark |
|
Front |
Mark each cylinder head bolt head with paint as shown in the illustration.
Tighten the cylinder head bolts 90° in the sequence shown in step 1.
Step 4:
Tighten the cylinder head bolts another 90° in the sequence shown in step 1.
Check that the paint marks are now facing rearward.
Note
Do not add engine oil for at least 2 hours after installation.
Do not start the engine for at least 2 hours after installation.
After installation, if the seal packing has seeped out, wipe it off.
Tech Tips
Perform "Inspection After Repair" after replacing the cylinder head sub-assembly Click here.
INSTALL VALVE STEM CAP
Apply a light coat of engine oil to the valve stem ends.
Install the 16 valve stem caps to the cylinder head sub-assembly.
Note
Do not drop the valve stem caps into the cylinder head sub-assembly.
SET CAMSHAFT TIMING GEAR ASSEMBLY
Tech Tips
When installing the camshaft timing gear assembly, release the lock pin and set the camshaft timing gear assembly to the advanced position before installation.
| *a | Advance Position |
| *b | Retard Position |
| *c | Knock Pin Hole |
| *d | Alignment Mark |
Check the camshaft timing gear assembly position.
Note
If the camshaft timing gear assembly is set to the advanced position, do not let the camshaft timing gear assembly rotate clockwise during installation.
If the camshaft timing gear assembly rotates to the retarded position, release the lock pin and set the camshaft timing gear assembly to the advanced position.
| *1 | Knock Pin |
| *a | Pin Hole |
Align and insert the knock pin of the camshaft with the pin hole of the camshaft timing gear assembly.
| *1 | Camshaft Timing Gear Assembly |
| *a | Incorrect |
| *b | Correct |
| *c | Clearance |
| *d | Camshaft Flange |
| *e | No Clearance |
Check that there is no clearance between the camshaft timing gear assembly and camshaft flange.
Secure the camshaft in place by hand, and then install the installation bolt of the camshaft timing gear assembly by hand.
Note
Do not use any tools to install the bolt. If the bolt is installed using a tool, the lock pin will be damaged.
Release the lock pin.
| *1 | Knock Pin |
| *a | Retard Side Path |
| *b | Advance Side Path |
| *c | Open |
| *d | Close |
| *e | Rubber |
| *f | Vinyl Tape |
Clean the camshaft journal with non-residue solvent.
Cover the 4 oil paths of the camshaft journal with vinyl tape as shown in the illustration.
Tech Tips
There are 4 oil paths in the grooves of the camshaft. Plug three of the paths with pieces of rubber.
Open a hole at port (A) shown in the illustration.
While applying approximately 200 kPa (2.0 kgf/ cm2, 29 psi) of air pressure to the oil path, forcibly turn the camshaft timing gear assembly in the advance direction (counterclockwise).
CAUTION:
Cover the path with a piece of cloth when applying pressure to keep oil from spraying.
Note
Do not allow the camshaft timing gear assembly to lock. If it locks, release the lock pin again.
Tech Tips
The camshaft timing gear assembly may turn in the advance direction without assistance by hand.
If enough air pressure cannot be applied because of air leakage from the port, releasing the lock pin may be difficult.
Remove the vinyl tape and rubber pieces from the camshaft.
Remove the bolt and camshaft timing gear assembly.
Note
Do not allow the camshaft timing gear assembly to lock. If it locks, release the lock pin again.
INSTALL VALVE LASH ADJUSTER ASSEMBLY
Inspect the valve lash adjuster assemblies before installing them Click here.
Install the 16 valve lash adjuster assemblies to the cylinder head sub-assembly.
Note
Install the valve lash adjuster assembly to the same place it was removed from.
INSTALL NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY
| *1 | No. 1 Valve Rocker Arm Sub-assembly |
| *2 | Valve Lash Adjuster Assembly |
| *3 | Valve Stem Cap |
Apply engine oil to the valve lash adjuster assembly tips and valve stem caps.
Install the 16 No. 1 valve rocker arm sub-assemblies as shown in the illustration.
INSTALL NO. 2 CAMSHAFT BEARING
Clean the No. 2 camshaft bearing.
Install the No. 2 camshaft bearing to the camshaft housing sub-assembly.
| *1 | Vernier Caliper |
Using a vernier caliper, measure the distance between the camshaft housing sub-assembly edge and the No. 2 camshaft bearing edge.
| Standard distance |
|---|
| 1.15 to 1.85 mm (0.0453 to 0.0728 in.) |
INSTALL NO. 1 CAMSHAFT BEARING
| *1 | Vernier Caliper |
Clean the No. 1 camshaft bearing.
Install the No. 1 camshaft bearing to the No. 1 camshaft bearing cap.
Using a vernier caliper, measure the distance between the No. 1 camshaft bearing cap edge and the No. 1 camshaft bearing edge.
| Standard dimension A - B or B - A |
|---|
| 0 to 0.7 mm (0 to 0.0276 in.) |
INSTALL OIL CONTROL VALVE FILTER
Install the oil control valve filter to the No. 1 camshaft bearing cap.
INSTALL CAMSHAFT
Clean the camshaft journals, camshaft housing sub-assembly and camshaft bearing caps.
Apply a light coat of engine oil to the camshaft journal, camshaft housing sub-assembly and camshaft bearing caps.
Install the camshaft and No. 2 camshaft to the camshaft housing sub-assembly.
Tech Tips
Perform "Inspection After Repair" after replacing the camshaft or No. 2 camshaft Click here.
INSTALL CAMSHAFT BEARING CAP
Confirm the marks and numbers on the No. 1 camshaft bearing cap, No. 2 camshaft bearing cap and 3 No. 3 camshaft bearing caps and place them in their proper positions and directions.
Install the 11 bolts in the order shown in the illustration.
Note
Make sure that the camshaft and No. 2 camshaft rotate smoothly after installing the No. 1 camshaft bearing cap, No. 2 camshaft bearing cap and No. 3 camshaft bearing caps.
INSTALL CAMSHAFT HOUSING SUB-ASSEMBLY
| *1 | No. 1 Valve Rocker Arm Sub-assembly |
| *2 | Valve Stem Cap |
| *3 | Valve Lash Adjuster Assembly |
| *a | Incorrect |
| *b | Correct |
Check that the No. 1 valve rocker arm sub-assemblies are installed as shown in the illustration.
| *a | Dashed Line |
| *b | Groove |
Apply seal packing in a continuous line as shown in the illustration.
| Seal Packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
| Apply Seal Packing as Follows | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Note
Remove any oil from the contact surface.
Install the camshaft housing sub-assembly within 3 minutes and tighten the bolts within 10 minutes after applying seal packing.
| *1 | Knock Pin |
| *a | Approximately 17° |
| *b | Approximately 2° |
Position the knock pins of the camshaft and No. 2 camshaft as shown in the illustration.
Install the camshaft housing sub-assembly, and then install the 20 bolts in the order shown in the illustration.
Note
Do not add engine oil for at least 2 hours after installation.
Do not start the engine for at least 2 hours after installation.
After installation, if the seal packing has seeped out, wipe it off.
INSTALL CAMSHAFT TIMING GEAR ASSEMBLY
| *a | Knock Pin Hole |
| *b | Alignment Mark |
Check the camshaft timing gear assembly position.
If the camshaft timing gear assembly is not set to the advanced position, release the lock pin and reset the camshaft timing gear assembly (Refer to the "Set Camshaft Timing Gear Assembly" procedures).
| *1 | Knock Pin |
| *a | Pin Hole |
Align and insert the knock pin of the camshaft with the pin hole of the camshaft timing gear assembly.
| *1 | Camshaft Timing Gear Assembly |
| *a | Incorrect |
| *b | Correct |
| *c | Clearance |
| *d | Camshaft Flange |
| *e | No Clearance |
Check that there is no clearance between the camshaft timing gear assembly and camshaft flange.
| *a | Hold |
| *b | Turn |
Using a wrench to hold the hexagonal portion of the camshaft, install the bolt.
Note
Be careful not to damage the cylinder head sub-assembly or spark plug tube with the wrench.
Do not disassemble the camshaft timing gear assembly.
Tech Tips
Perform "Inspection After Repair" after replacing the camshaft timing gear assembly Click here.
INSTALL CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY
| *1 | Knock Pin |
| *a | Pin Hole |
Align and insert the knock pin of the No. 2 camshaft with the pin hole of the camshaft timing exhaust gear assembly.
| *1 | Camshaft Timing Exhaust Gear Assembly |
| *a | Incorrect |
| *b | Correct |
| *c | Clearance |
| *d | No. 2 Camshaft Flange |
| *e | No Clearance |
Check that there is no clearance between the camshaft timing exhaust gear assembly and No. 2 camshaft flange.
| *a | Hold |
| *b | Turn |
Using a wrench to hold the hexagonal portion of the No. 2 camshaft, install the bolt.
Note
Be careful not to damage the cylinder head sub-assembly or spark plug tube with the wrench.
Do not disassemble the camshaft timing exhaust gear assembly.
Tech Tips
Perform "Inspection After Repair" after replacing the camshaft timing exhaust gear assembly Click here.
ADD ENGINE OIL
Add 50 cc (3.1 cu. in.) of engine oil into the oil hole shown in the illustration.
Note
Oil must be added if the valve lash adjuster assemblies were removed.
Make sure that the low pressure chamber and oil paths of the valve lash adjuster assemblies are full of engine oil.
SET NO. 1 CYLINDER TO TDC/COMPRESSION
Temporarily install the crankshaft pulley bolt.
Rotate the crankshaft 40° counterclockwise to position the crankshaft pulley key as shown in the illustration.
| *a | Approximately 7° |
| *b | Approximately 32° |
| *c | Timing Mark |
Check that the timing marks of the camshaft timing exhaust gear assembly and camshaft timing gear assembly are as shown in the illustration.
Tech Tips
"A" is not a timing mark.
INSTALL NO. 1 CHAIN VIBRATION DAMPER
Install the No. 1 chain vibration damper with the 2 bolts in the order shown in the illustration.
INSTALL CHAIN SUB-ASSEMBLY
Place the chain sub-assembly onto the camshaft timing exhaust gear assembly, camshaft timing gear assembly and crankshaft timing sprocket.
Tech Tips
Make sure the mark plate of the chain sub-assembly faces away from the engine.
It is not necessary to install the chain sub-assembly to the teeth of the camshaft timing exhaust gear assembly, camshaft timing gear assembly and crankshaft timing sprocket.
| *a | Mark Plate |
| *b | Timing Mark |
Align the mark plate (yellow or gold) of the chain sub-assembly with the timing mark of the camshaft timing exhaust gear assembly and install the chain sub-assembly to the camshaft timing exhaust gear assembly.
| *a | Mark Plate |
| *b | Timing Mark |
Align the mark plate (pink or gold) of the chain sub-assembly with the timing mark of the crankshaft timing sprocket and install the chain sub-assembly to the crankshaft timing sprocket.
Tie a string above the crankshaft timing sprocket so that the chain sub-assembly is secure.
| *a | Mark Plate |
| *b | Timing Mark |
Using the hexagonal portion of the camshaft, rotate the camshaft counterclockwise with a wrench, align the timing mark of the camshaft timing gear assembly with the mark plate (yellow or gold) of the chain sub-assembly and install the chain sub-assembly to the camshaft timing gear assembly.
Tech Tips
Hold the camshaft in place with a wrench until the No. 1 chain tensioner assembly is installed.
Remove the string above the crankshaft timing sprocket, rotate the crankshaft clockwise, and loosen the chain sub-assembly so that the chain tensioner slipper can be installed.
Note
Make sure the chain sub-assembly is secure.
INSTALL CHAIN TENSIONER SLIPPER
Install the chain tensioner slipper with the bolt.
INSTALL NO. 1 CHAIN TENSIONER ASSEMBLY
Install a new gasket and the No. 1 chain tensioner assembly with the 2 bolts.
Remove the pin from the stopper plate.
INSTALL TIMING CHAIN GUIDE
Install the timing chain guide with the bolt.
SET NO. 1 CYLINDER TO TDC/COMPRESSION
Temporarily install the crankshaft pulley bolt.
| *1 | Crankshaft Pulley Key | - | - |
| *a | Approximately 7° | *b | Approximately 32° |
| *c | Timing Mark | - | - |
Rotate the crankshaft clockwise and align the crankshaft pulley key as shown in the illustration.
Check that the timing marks on the camshaft timing exhaust gear assembly and camshaft timing gear assembly are as shown in the illustration.
Tech Tips
"A" is not a timing mark.
Remove the crankshaft pulley bolt.
INSTALL INTAKE MANIFOLD
Install the wire harness clamp bracket to the intake manifold with the bolt.
| *a | Black |
Connect the 2 vacuum hoses to the intake manifold to install the No. 1 check valve.
Tech Tips
Check that the No. 1 check valve is installed as shown in the illustration.
Check the tumble control valves (w/ TCV).
Note
The tumble control valves may be damaged if they are not closed before installing the intake manifold.
Tech Tips
Connect the battery to the terminals of the intake air control valve actuator to operate the motor and close the tumble control valves Click here.
Install a new intake manifold gasket to the intake manifold.
Install the intake manifold by tightening the 6 bolts in the sequence shown in the illustration (w/ TCV).
Install the intake manifold by tightening the 6 bolts in the sequence shown in the illustration (w/o TCV).
| *A | w/ TCV |
| *B | w/o TCV |
Connect the intake air control valve actuator connector and engage the 2 wire harness clamps (w/ TCV).
Engage the 2 wire harness clamps (w/o TCV).
Install the wire harness with the bolt.
Install the wire harness clamp bracket to the intake manifold with the bolt.
Connect the wire harness connector.
Engage the 3 wire harness clamps.
Connect the fuel vapor feed hose to the intake manifold and slide the clip to secure it.
Install the 2 wire harness clamp brackets to the intake manifold with the 2 bolts.
INSTALL FUEL DELIVERY PIPE
| *1 | Fuel Delivery Spacer |
| *2 | Injector Vibration Insulator |
| *a | Fuel Delivery Pipe Side |
| *b | Cylinder Head Side |
Install 4 new injector vibration insulators to the cylinder head.
Install the 2 fuel delivery spacers onto the cylinder head.
Tech Tips
Install the fuel delivery spacer so that the longer protrusion is on the cylinder head side.
Install the fuel delivery pipe with the 4 fuel injector assemblies and install the 2 bolts.
Note
Do not drop the fuel injector assemblies when installing the fuel delivery pipe.
Check that the fuel injector assemblies rotate smoothly after installing the fuel delivery pipe.
CONNECT UNION TO VACUUM TUBE HOSE (for LHD)
Connect the union to vacuum tube hose to the intake manifold and slide the clip to secure it.
CONNECT UNION TO CHECK VALVE HOSE (for RHD)
Connect the union to check valve hose to the intake manifold and slide the clip to secure it.
CONNECT NO. 2 VENTILATION HOSE
Connect the No. 2 ventilation hose to the intake manifold and slide the clip to secure it.
INSTALL VACUUM SWITCHING VALVE ASSEMBLY (for ACIS)
Install the vacuum switching valve assembly to the intake manifold with the bolt.
Connect the 2 vacuum hoses and vacuum switching valve assembly connector.
for LHD:
Engage the wire harness clamp.
Connect the union to vacuum tube hose.
for RHD:
Engage the wire harness clamp.
Connect the union to check valve hose.
INSTALL THROTTLE WITH MOTOR BODY ASSEMBLY
Install a new gasket to the intake manifold.
Install the fuel tube bracket with the bolt.
Install the throttle with motor body assembly with the 4 bolts.
Connect the throttle body connector.
Connect the fuel tube to the fuel tube bracket.
Connect the No. 2 water by-pass hose to the throttle with motor body assembly.
Connect the No. 1 water by-pass hose to the throttle with motor body assembly.
INSTALL EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY
Set a new gasket to the cylinder head sub-assembly.
Temporarily install the exhaust manifold converter sub-assembly with the 5 nuts.
Temporarily install the No. 2 manifold stay and manifold stay with the 2 bolts and 2 nuts.
Tighten the 5 nuts in the sequence shown in the illustration.
INSTALL NO. 1 EXHAUST MANIFOLD HEAT INSULATOR
Install the No. 1 exhaust manifold heat insulator with the 4 bolts.
INSTALL NO. 2 MANIFOLD STAY
Install the No. 2 manifold stay with the bolt and nut.
INSTALL MANIFOLD STAY
Install the manifold stay with the bolt and nut.
INSTALL TIMING CHAIN COVER SUB-ASSEMBLY