Valve Clearance: Service and Repair

VALVE CLEARANCE

COMPONENTS (Part 1):

COMPONENTS (Part 2):

COMPONENTS (Part 3):

REMOVAL
1. REMOVE FRONT WHEEL RH
2. REMOVE FRONT FENDER APRON SEAL RH
3. REMOVE ENGINE NO.1 COVER SUB-ASSEMBLY
4. REMOVE SPARK PLUG
5. REMOVE VENTILATION HOSE
6. REMOVE VENTILATION HOSE NO.2
7. REMOVE ENGINE WIRE





8. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY
(a) Remove the bolt and disconnect the engine wire harness clamp.
(b) Remove the 8 bolts, 2 nuts, cylinder head cover and gasket.





9. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley, and align its groove with timing mark 0 of the timing chain cover.
(b) Check that the timing marks of the camshaft timing gear and sprocket are aligned with the timing marks of bearing caps No.1 and No.2, as shown in the illustration.

INSPECTION
1. INSPECT VALVE CLEARANCE

HINT: Inspect and adjust the valve clearance when the engine is cold.





(a) Check only the valves indicated on the left.
(1) Using a feeler gauge, measure the clearance between each valve lifter and camshaft.
(2) Record valve clearance measurements that are out of the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.

Valve Clearance (Cold):

(b) Turn the crankshaft clockwise 1 revolution (360°) and set the No. 4 cylinder to TDC/compression.





(c) Check only the valves indicated on the left.
(1) Using a feeler gauge, measure the clearance between each valve lifter and camshaft.
(2) Record valve clearance measurements that are out of the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.

Valve Clearance (Cold):

INSTALLATION
1. INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY
(a) Remove any old packing (FIPG) material.





(b) Apply seal packing to the 2 locations shown in the illustration.
Seal packing: Toyota Genuine Adhesive 1344, Three Bond 1344 or equivalent

NOTICE:
^ Remove any oil from the contact surface.
^ Install the cylinder head cover within 5 minutes after applying seal packing.
^ Do not start the engine for at least 2 hours after installing the cylinder head cover.





(c) Install the cylinder head cover with the 8 bolts and 2 nuts.
Torque: A
11 Nm (110 kgf-cm, 8 ft. lbs.)
B
14 Nm (143 kgf-cm, 10 ft. lbs.)
Nut
11 Nm (110 kgf-cm, 8 ft. lbs.)
2. INSTALL SPARK PLUG
Torque: 19 Nm (194 kgf-cm, 14 ft. lbs.)
3. INSTALL FRONT WHEEL RH
4. INSPECT FOR OIL LEAK