Camshaft No. 3 (LH)
REPLACEMENT1. REMOVE TIMING BELT
2. REMOVE CYLINDER HEAD COVER SUB-ASSY LH
3. PISTON & VALVE BRAKE PREVENT WORK
a. Turn the crankshaft timing pulley counterclockwise by 45° and match the cut part with the illustrated position.
HINT: Positioning the No.1 cylinder in 45° BTDC does not make the valve and piston interfere each other even when the valve is full open.
NOTICE: Be sure to match the cut part by timing it counterclockwise.
4. REMOVE CAMSHAFT TIMING PULLEY SUB-ASSY LH
a. Remove the 4 bolts and timing pulley.
5. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSY
6. REMOVE NO.3 CAMSHAFT SUB-ASSY
NOTICE: Since the thrust clearance of the camshaft is small, the camshaft must be kept level while it is being removed. If the camshaft is not kept level, the portion of the cylinder head receiving the shaft thrust may crack or be damaged, causing the camshaft to seize or break. To avoid this, the following steps should be carried out.
a. Boring the service bolt hole of the sub-gear upward by turning the hexagon wrench head portion of the exhaust camshaft with a wrench.
b. Secure the sub-gear to the main gear with a service bolt.
Recommended service bolt
HINT: When removing the camshaft, make sure that the torsional spring force of the sub-gear has been eliminated by the above operation.
c. Set the timing mark (1 dot mark) of the camshaft main gear at approximately 10° angle by turning the hexagon wrench head portion of the exhaust camshaft with a wrench.
Camshaft, Right Bank.:
d. Uniformly loosen the 22 bearing cap bolts in several passes, in the sequence shown.
e. Remove the 22 bearing cap bolts, 4 seal washers, oil feed pipe, 9 bearing caps, camshaft housing plug, oil control valve filter and 2 camshafts.
NOTICE:
^ Do not pry the camshaft with a tool or the likes by applying excessive fore to it.
^ Do not damage the reception part of the thrust in the cylinder head side.
f. Mount the hexagon wrench head portion of the intake camshaft in a vise.
NOTICE:
^ Be careful not to damage the camshaft.
^ The 4 bolts shown in the illustration determine the backlash of the gear in the timing tube, so do not remove them. If any of the 4 bolts are removed, install a new timing tube assembly.
g. Remove the screw plug and seal washer.
h. Using a 10 mm hexagon wrench, and remove the bolt.
i. Pull out the timing tube and drive gear assembly from the camshaft.
j. Using SST and a 5 mm hexagon wrench, and remove the 4 bolts, drive gear and oil seal.
SST 09960-10010 (09962-01000, 09963-00500)
NOTICE: Be careful not to damage the timing tube.
7. INSTALL NO.3 CAMSHAFT SUB-ASSY
a. Insert a new oil seal into the camshaft timing tube until it reaches the stopper.
NOTICE:
^ Be careful of the installation direction.
^ Do not turn over the oil seal lip.
b. Align the timing tube knock pin with the knock pin groove of the drive gear, and temporarily install the drive gear with the 4 bolts.
c. Using SST and a 5 mm hexagon wrench, uniformly tighten the 4 bolts in several passes.
SST 09960-10010 (09962-01000, 09963-00500)
Torque: 7.5 Nm (80 kgf-cm, 66 inch lbs.)
NOTICE: Be careful not to damage the timing tube.
d. Mount the hexagon wrench head portion of the camshaft In a vise.
NOTICE: Be careful not to damage the camshaft.
e. Align the camshaft knock pin with the knock pin groove of the timing tube, and push the timing tube by hand until you feel it touch the bottom.
f. Using a 10 mm hexagon wrench, install the bolt.
Torque: 78 Nm (790 kgf-cm, 58 ft. lbs.)
g. Install the seal washer and screw plug.
Torque: 15 Nm (150 kgf-cm, 11 ft. lbs.)
h. Install the camshaft No.1 with timing tube assembly and the camshaft No.2.
NOTICE: Since the thrust clearance of the camshaft is small, the camshaft must be kept level while it is being installed. If the camshaft is not kept level, the portion of the cylinder head receiving the shaft thrust may crack or be damaged, causing the camshaft to seize or break. To avoid this, the following steps should be carried out.
1. Apply engine oil to the cam and gear of the camshaft and also the journal of the cylinder head.
2. Align the timing marks (1 dot mark) of the camshaft drive and driven main gears, and place the intake and exhaust camshafts.
3. Set the timing mark (1 dot mark) of the camshaft drive and driven main gears at approximately 10° angle.
4. Apply seal packing to the camshaft housing plug.
^ Remove the old packing (FIPG) material.
^ Apply seal packing to the housing plug.
Seal packing: Part No. 08826-00080 or equivalent
5. Install the camshaft housing plug to the cylinder head as shown in the illustration.
6. Install the oil control valve filter to the cylinder head.
NOTICE: Be careful of the installation direction.
7. Apply seal packing to the front bearing cap.
^ Remove any old packing (FIPG) material and be careful not to drop any oil on the contact surfaces of the bearing cap and cylinder head.
Using a razor blade and gasket scraper, remove all the old packing (FIPG) material from the gasket surfaces and groove.
Thoroughly clean all components to remove all the loose material.
Using a non-residue solvent, clean both sealing surfaces.
^ Apply seal packing to the bearing cap as shown in the illustration.
Install a nozzle that has been cut to a 1.5 mm (0.059 inch) opening.
Parts must be assembled within 5 minutes of application. Otherwise the material must be removed and reapplied.
Immediately remove nozzle from the tube and reinstall cap.
Seal packing: Part No. 08826-00080 or equivalent
NOTICE: Do not apply seal packing to the front bearing cap grooves.
8. Install the front bearing cap.
HINT: Installing the front bearing cap will determine the thrust portion of the camshaft.
9. Install the other bearing caps in the sequence shown with the arrow mark facing forward.
10. Push in the camshaft oil seal.
11. Install 4 new seal washers to the bearing cap bolts (1 - 4)
12. Apply a light coat of engine oil on the threads and under the heads of the bearing cap bolts (5 - 22).
NOTICE: Do not apply engine oil under the heads of the bearing cap bolts (1 - 4).
13. Install the oil feed pipe and the 22 bearing cap bolts.
14. Uniformly tighten the 22 bearing cap bolts in several passes, in the sequence shown.
Torque:
7.5 Nm (80 kgf-cm, 66 inch lbs.) for bolts 21 and 22
16 Nm (160 kgf-cm, 12 ft. lbs.) for others
15. Remove the service bolt.
8. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSY
9. INSTALL CAMSHAFT TIMING PULLEY SUB-ASSY LH
a. Align the camshaft timing tube knock pin with the knock pin groove of the timing pulley.
b. Attach the timing pulley to the camshaft timing tube, facing the "L" mark forward.
c. Hold the hexagon wrench head portion of the camshaft, install the 4 pulley bolts.
Torque: 7.5 Nm (80 kgf-cm, 66 inch lbs.)
10. INSTALL CYLINDER HEAD COVER SUB-ASSY LH
11. INSTALL TIMING BELT