PROCEDURE
REMOVE OUTER COWL TOP PANEL (for Sedan)
REMOVE OUTER COWL TOP PANEL (for Hatchback, Wagon)
REMOVE NO. 2 CYLINDER HEAD COVER
REMOVE IGNITION COIL ASSEMBLY
REMOVE SPARK PLUG
DISCONNECT NO. 2 VENTILATION HOSE
Slide the clip and disconnect the No. 2 ventilation hose from the cylinder head cover sub-assembly.
DISCONNECT ENGINE WIRE
Remove the 3 bolts and disconnect the 6 connectors, 3 clamps and engine wire.
DISCONNECT AIR TUBE
Slide the 3 clips and disconnect the vacuum hose assembly, 2 fuel vapor feed hoses and vacuum transmitting hose.
Remove the 2 bolts and air tube.
REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY
SET NO. 1 CYLINDER TO TDC / COMPRESSION
| *a | Timing Mark |
| *b | Timing Notch |
Turn the crankshaft pulley until its timing notch and timing mark "0" of the timing chain cover sub-assembly are aligned.
Check that the timing marks on the camshaft timing exhaust gear assembly and camshaft timing gear assembly are facing upward as shown in the illustration.
If not, turn the crankshaft 1 complete revolution (360°) and align the marks as above.
| *a | Paint Mark |
Place paint mark on the chain sub-assembly in alignment with the timing marks on the camshaft timing gear assembly and camshaft timing exhaust gear assembly.
REMOVE NO. 2 CHAIN VIBRATION DAMPER
Using SST, remove the 2 bolts and No. 2 chain vibration damper from the camshaft bearing cap.
REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY
REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY
| *1 | Bolt |
| *a | Hold |
| *b | Turn |
While holding the hexagonal portion of the No. 2 camshaft with a wrench, loosen the camshaft timing exhaust gear bolt with SST.
Note
Do not remove the other 4 bolts ("TORX" bolt). If any of them is removed, replace the camshaft timing exhaust gear assembly.
Tech Tips
The bolt cannot be removed separately from the camshaft timing exhaust gear assembly due to lack of space.
Hold the hexagonal portion of the camshaft with a wrench and turn it slightly counterclockwise to release the chain sub-assembly.
Note
Do not turn the camshaft more than necessary.
Tech Tips
Be sure to loosen the chain sub-assembly because the camshaft timing exhaust gear assembly cannot be removed with the chain tensioned.
While removing the chain sub-assembly, pull out the camshaft timing exhaust gear assembly horizontally and then upward with the bolt installed.
INSPECT CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY
| *a | Straight Pin |
| *b | Key Groove |
Temporarily install the camshaft timing exhaust gear assembly.
Tighten the bolt on the camshaft timing exhaust gear assembly.
Align the straight pin on the No. 2 camshaft with the key groove in the camshaft timing exhaust gear assembly and temporarily install the camshaft timing exhaust gear assembly to the No. 2 camshaft with the bolt.
Note
Do not install the chain sub-assembly onto the camshaft timing exhaust gear assembly in this step.
Do not allow the chain sub-assembly to interfere with the camshaft timing exhaust gear assembly when installing the camshaft timing exhaust gear assembly.
Inspect the lock of the camshaft timing exhaust gear assembly.
Check that the camshaft timing exhaust gear assembly is locked.
If the camshaft timing exhaust gear assembly does not operate as specified, replace it.
| *a | Make a Hole |
| *b | Adhesive Tape Sealing Area |
| *c | Adhesive Tape |
Inspect camshaft timing exhaust gear assembly operation.
Tech Tips
If the camshaft timing exhaust gear assembly does not operate as specified, replace it.
After cleaning the exhaust side VVT oil hole on the camshaft bearing cap, completely seal the oil hole with adhesive tape or equivalent as shown in the illustration to prevent air from leaking.
Note
Be sure to seal the oil hole completely because air leaks due to insufficient sealing will prevent the lock pin from being released.
Make a hole in the adhesive tape covering the oil hole as shown in the illustration. (Procedure A)
| *a | Protective Tape |
Apply approximately 200 kPa (2.0 kgf/cm2, 29 psi.) of air pressure into the hole made in procedure A to release the lock pin.
Note
If air leaks out, reattach the adhesive tape.
Cover the oil hole with a piece of cloth when applying air pressure to prevent oil from spraying.
Using a screwdriver with its tip wrapped with protective tape, forcibly turn the camshaft timing exhaust gear assembly in the retard direction (clockwise).
Note
Be sure to keep the camshaft timing exhaust gear assembly in the retard direction. If the camshaft timing exhaust gear assembly is released, it will return to the advanced position automatically due to the force from the spring.
Do not damage the camshaft timing exhaust gear assembly.
Tech Tips
Depending on the air pressure applied, the camshaft timing exhaust gear assembly may turn in the retard direction without assistance by hand.
| *a | Protective Tape |
Using a screwdriver with its tip wrapped with protective tape, turn the camshaft timing exhaust gear assembly within its movable range (20°) 2 or 3 times without turning it to the most advanced position. Check that the camshaft timing exhaust gear assembly turns smoothly.
Lock the camshaft timing exhaust gear assembly.
Note
Check that the camshaft timing exhaust gear assembly locks at the most advanced position (the most advanced position of its movable range) and cannot be rotated any further.
Remove the adhesive tape from the camshaft bearing cap.
Remove the camshaft timing exhaust gear assembly.
Remove the temporarily installed camshaft timing exhaust gear assembly.
INSPECT CAMSHAFT TIMING GEAR ASSEMBLY
Inspect the lock of the camshaft timing gear assembly.
Check that the camshaft timing gear assembly is locked.
If the camshaft timing exhaust gear assembly does not operate as specified, replace it.
| *a | Make a Hole |
| *b | Adhesive Tape Sealing Area |
| *c | Adhesive Tape |
Inspect camshaft timing gear assembly operation.
Tech Tips
If the camshaft timing exhaust gear assembly does not operate as specified, replace it.
After cleaning the intake side VVT oil hole on the camshaft bearing cap, completely seal the oil hole with adhesive tape or equivalent as shown in the illustration to prevent air from leaking.
Note
Be sure to seal the oil hole completely because air leaks due to insufficient sealing will prevent the lock pin from being released.
Make a hole in the adhesive tape covering the oil hole as shown in the illustration. (Procedure B)
Apply approximately 150 kPa (1.5 kgf/cm2, 22 psi.) of air pressure into the hole made in procedure B to release the lock pin.
Note
If air leaks out, reattach the adhesive tape.
Cover the oil hole with a piece of cloth when applying air pressure to prevent oil from spraying.
Forcibly turn the camshaft timing gear assembly in the advance direction (counterclockwise).
Tech Tips
Depending on the air pressure applied, the camshaft timing gear assembly may turn in the advance direction without assistance by hand.
Turn the camshaft timing gear assembly within its movable range (27.5°) 2 or 3 times without turning it to the most retarded position. Check that the camshaft timing gear assembly turns smoothly.
Note
Do not lock the camshaft timing gear assembly.
If camshaft timing gear assembly is locked, release the lock pin again.
Remove the adhesive tape from the camshaft bearing cap.
REMOVE CAMSHAFT BEARING CAP
Uniformly loosen and remove the 10 bolts in the order shown in the illustration.
Note
Do not loosen the other 15 bearing cap bolts in this step.
Tech Tips
Arrange the removed parts in the correct order.
Remove the bolts and camshaft bearing caps in the order shown in the illustration. Immediately after removing the camshaft bearing caps, 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) | - | - |
Note
If the bolts are loosened all at once, FIPG on the camshaft housing sub-assembly and cylinder head sub-assembly may peel off, resulting in oil oozing. 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.
Tech Tips
Arrange the removed parts in the correct order.
Part number for the service bolts used to temporarily secure the camshaft housing sub-assembly: 91551-G0875 (15 bolts)
Part number for the spacers used to temporarily secure the camshaft housing sub-assembly: 90387-12048 (15 spacers)
REMOVE NO. 2 CAMSHAFT
Remove the No. 2 camshaft from the camshaft housing sub-assembly.
REMOVE CAMSHAFT
Hold up the chain sub-assembly and remove the camshaft from the camshaft housing sub-assembly.
Suspend the chain sub-assembly with a string or equivalent.
REMOVE CAMSHAFT TIMING GEAR ASSEMBLY
Clamp the hexagonal portion of the camshaft in a soft jaw vise.
| *1 | Bolt |
| *a | Do Not Remove |
Remove the bolt and camshaft timing gear assembly.
Note
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 use it with the lock pin released.
REMOVE NO. 1 CAMSHAFT BEARING
Remove the 2 No. 1 camshaft bearings from the camshaft bearing cap.
Note
Arrange the removed parts in the correct order.
REMOVE NO. 2 CAMSHAFT BEARING
Remove the 2 No. 2 camshaft bearings from the camshaft housing sub-assembly.
Note
Arrange the removed parts in the correct order.