Toyota 13054-31061
Camshaft Sub-Assembly

Remove the camshaft housing sub-assembly LH carefully to avoid damaging contact surfaces.

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).

Turn the crankshaft pulley until the groove aligns with the timing mark "0" on the timing chain cover, ensuring that the timing marks on the camshaft timing gear and sprocket align with those on the No. 1 and No. 2 bearing caps. If they do not align, turn the crankshaft pulley one full revolution to align them.

Finally, install oil pipes No.1 and No.2, ignition coil assembly, intake air surge tank, oil pan sub-assemblies, crankshaft pulley, engine mounting stay No.2 RH, timing gear cover No.2, water pump pulley, V-ribbed belt tensioner assembly, engine mounting bracket RH, idler pulley sub-assembly No.2, and reassemble the engine assembly with transaxle, ensuring all components are properly secured and torqued.

Hold the No. 2 camshaft with a wrench, loosen the camshaft timing set bolt, then uniformly loosen and remove the 10 bearing cap bolts in the specified sequence and remove the 5 bearing caps.

Remove chain tensioner assembly No.1, chain sub-assembly, camshaft timing gears and No.2 chain (LH bank), ensuring the camshaft is kept level during removal to prevent damage.

Check for no clearance between the gear and camshaft, then tighten the flange bolt to a torque of 54 Nm (551 kgf-cm, 40ft-lbf) and verify that the camshaft timing gear can move to the retard angle side and is locked in the most retarded position.

Install the No. 1 chain tensioner assembly, check valve clearance, install the cylinder head cover sub-assembly, install the ignition coil assembly, install the No. 1 engine cover sub-assembly, install the front fender apron seal RH, install the engine under cover LH, install the engine under cover RH, install the front wheel RH, and check for engine oil leaks.

Allow the plunger to extend slightly, rotate the stopper plate counterclockwise to release the lock, push the plunger into the tensioner, set the lock by moving the stopper plate clockwise, insert a pin into the stopper plate hole, and then remove the 2 bolts, chain tensioner, and gasket.

They should be installed within 15 minutes.

Remove the No. 2 chain tensioner assembly, camshaft bearing cap by uniformly loosening and removing the 8 and 12 bearing cap bolts in the specified sequence, and then the 5 camshaft bearing caps.

Remove the timing chain cover.

Clean them, then apply engine oil and install the No. 1 and No. 2 camshafts.

Add 50 cc (3.1 cu. in) of engine oil, ensuring the low-pressure chamber and oil paths of the lash adjusters are full.

Temporarily install the crankshaft pulley bolt, then rotate the crankshaft clockwise until the timing marks on the crankshaft timing gear and camshaft timing gears align; if they do not align, rotate the crankshaft clockwise again.