Toyota 13502-28030
Camshaft

Hold the No. 2 camshaft with a wrench while loosening the timing set bolt.

Remove the front wheel RH, engine under cover LH, engine under cover RH, front fender apron seal RH, No. 1 engine cover sub-assembly, ignition coil assembly, and cylinder head cover sub-assembly.

Remove the 2 ventilation hoses, 2 bolts to separate the wire harness brackets, and 8 bolts along with 2 nuts to detach the cover and gasket.

Apply engine oil to the threads and heads of the bolts, and tighten them in the specified sequence, ensuring the No. 1 bearing cap is torqued to 30 Nm (301 kgf-cm, 22 ft. lbs.) and the No. 3 bearing cap to 9.0 Nm (92 kgf-cm, 80 inch lbs.).

Check that the paint marks on the chain align with the timing marks on the camshaft timing gear and camshaft timing sprocket, and that the crankshaft pulley groove aligns with the timing mark "0" on the timing mark chain cover.

Install the timing chain onto the camshaft timing gear with the paint mark aligned with the timing mark.

Remove the No. 1 chain tensioner assembly.

Clamp the camshaft in a vise to prevent rotation, cover all oil ports with vinyl tape except the advance side port, apply air pressure of 150 kPa (1.5 kgf/cm2, 22 psi) to the oil path, and turn the camshaft timing gear counterclockwise by hand.

Apply engine oil to the journal portion, place it on the cylinder head aligning the paint mark with the timing mark, temporarily tighten the camshaft timing sprocket set bolt, check the order of the front marks and numbers, and install the bearing caps. Again, apply engine oil to the threads and under the heads of the bearing cap bolts, then uniformly tighten the 10 bearing cap bolts with the No. 2 bearing cap at 30 Nm (301 kgf-cm, 22 ft-lbf) and the No. 3 bearing cap at 9.0 Nm (92 kgf-cm, 80 in-lbf).

Remove the camshaft timing gear assembly and camshaft timing exhaust gear assembly by holding the hexagonal portion of the camshaft while removing the flange bolts, ensuring the lock pin is released and keeping the assemblies horizontal.

Check that the paint marks on the chain align with the timing marks on the camshaft timing gear and camshaft timing sprocket, and ensure the crankshaft pulley groove aligns with the timing mark "0" of the timing chain cover.

Apply a light coat of engine oil to the journal portion, install the timing chain onto the camshaft timing gear aligning the paint mark with the timing mark, and check the front marks and numbers before installing the bearing caps into the cylinder head.

Apply a light coat of engine oil to the journal portion of the camshaft, install the timing chain onto the camshaft timing gear with the paint mark aligned with the timing mark, and install the bearing caps into the cylinder head after checking the front marks and numbers.

The chain in alignment with the timing marks.

Remove the bolt and disconnect the engine wire harness clamp, then remove the bolts, 2 nuts, cylinder head cover, and gasket.

Avoid engine oil application for at least 2 hours post-installation.

Align the painted mark of the chain with the timing mark of the camshaft timing sprocket, temporarily tighten the sprocket bolt, and install the bearing caps and bolts, ensuring to tighten the sprocket bolt to 54 Nm (551 kgf-cm, 40 ft. lbs.).