Toyota 13053-20040
Camshaft Sub-Assembly

You should start to service the RH camshaft by draining coolant then removing essential components including front wheel, wiper arms, cowl top ventilator louver sub-assembly and wiper link assembly and several covers and components including V-bank cover, air cleaner cap, emission control valve set, intake air surge tank, ignition coil assembly and cylinder head cover. Begin the procedure by taking away the front fender apron seal together with belts, engine mounting components and timing belt covers until you can access the timing belt and camshaft timing pulleys utilizing Special Service Tool: 09960-10010 (09962-01000, 09963-01000) and 09249-63010. When removing the camshaft it should stay level to avoid damage and users should align timing marks and fasten the exhaust camshaft sub-gear with a service bolt tightened to 5.4 Nm (55 kgf-cm, 48 inch lbs.). The technician should carefully extract the camshaft together with the No. 2 camshaft by sequentially loosening the bearing cap bolts which must be done without damaging the cylinder head. The procedure requires clamp placement on the camshaft followed by lock nut removal with a 46 mm socket wrench that must have its lock pin in place. Tighten the assembly of camshaft sub-gear and timing gear with engine oil on the lock nut to 150 Nm (1,530 kgf-cm, 111 ft. lbs.). During the installation of the No. 2 camshaft use fresh engine oil on both the thrust portion and journal then align the oil seal via seal packing (Part No. 08826-00080 equivalent) into the No. 1 bearing cap. Fitting the main camshaft requires bearing cap bolt torque application of 16 Nm (163 kgf-cm, 12 ft. lbs.). Install all timing belt covers and camshaft timing pulleys and other components following sequential order while using appropriate torque values that require 43 Nm (438 kgf-cm) for the timing belt idler sub-assembly. The valve clearance needs inspection before cylinder head cover installation with ignition coil assembly and intake air surge tank together with other components and hose reinstallation and adding coolant during leak verification.

Keep it level to avoid damage, align the timing marks, and secure the exhaust camshaft sub-gear with a service bolt (torque: 5.4 Nm).

Fix the camshaft with a wrench, loosen the bolt, remove the bearing cap bolts in the specified sequence, then raise and remove the camshaft along with the sprocket bolt and disconnect the camshaft timing sprocket from the timing chain.

Tie the timing chain with a string, ensuring nothing drops inside the timing chain cover.

Align it with the straight pin and key groove, turn it while pushing against the camshaft, and ensure no clearance exists between the gear's fringe and the camshaft.

Install chain tensioner assembly No. 1, cylinder head cover sub-assembly, connect engine wire, install ignition coil assembly with a torque of 9.0 Nm (92 kgf-cm, 80 inch lbs.), install spark plug with a torque of 19 Nm (194 kgf-cm, 14 ft. lbs.), reinstall the front wheel RH, and check for engine oil leaks.

Loosen the bearing cap bolts in the specified sequence and remove the caps, then remove the camshaft and tie the timing chain with a string, ensuring nothing drops inside the timing chain cover.

Remove the 2 nuts, tensioner, and gasket, ensuring not to revolve the crankshaft without the tensioner.

Turn the crankshaft pulley to align its groove with the timing mark 0 of the timing chain cover, ensuring the timing marks of the camshaft timing gear and sprocket align with the bearing caps, and place paint marks on the timing chain.

Tighten the 10 bearing cap bolts (Torque: 16 Nm).

Tighten bearing cap No.1 to 30 Nm (301 kgf-cm, 22 ft-lbf) and bearing cap No.3 to 9.0 Nm (92 kgf-cm, 80 in-lbf).

Remove the front wheel RH, front fender apron seal RH, engine cover sub-assembly No.1, spark plug, ventilation hose, ventilation hose No.2, and engine wire.

Install the timing chain on the camshaft timing gear, aligning the painted mark with the timing marks, and install the bearing caps and bolts, tightening them in the specified sequence with the appropriate torque values.

Fix the camshaft with a wrench, loosen the bolt, remove the bearing cap bolts in the specified sequence, then raise and remove the No. 2 camshaft along with the sprocket bolt and disconnect the camshaft timing sprocket from the timing chain.