Toyota 13501-31091
Camshaft

Remove idler pulley sub-assembly No.2, engine mounting bracket RH, water pump pulley, V-ribbed belt tensioner assembly, timing gear cover No.2, engine mounting stay No.2 RH, engine mounting bracket front No.1 LH, water inlet housing, crankshaft pulley, oil pan sub-assembly No.2, oil strainer sub-assembly, oil pan sub-assembly, intake air surge tank, ignition coil assembly, and oil pipe No.1 and No.2, ensuring to remove the respective unions and filters.

Ensure to cover the paths with a shop rag.

Begin by removing the engine assembly with the transaxle, engine wire, front frame assembly, starter assembly, automatic transaxle assembly, oil level gauge guide sub-assembly, and both exhaust manifold sub-assemblies (RH and LH).

Remove the camshafts while keeping them level, loosening and removing the bearing cap bolts in the specified sequence, and removing the camshaft bearing caps.

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 engine oil to the threads and under the heads of the bearing cap bolts, then uniformly tighten the 10 bearing cap bolts in the specified sequence, with the No. 1 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).

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 engine oil to the threads and under the heads of the bearing cap bolts, then uniformly tighten the 10 bearing cap bolts in the specified sequence, with No. 1 Bearing cap at 30 Nm (301 kgf-cm, 22 ft-lbf) and No. 3 Bearing cap at 9.0 Nm (92 kgf-cm, 80 in-lbf).

Remove the No. 1 chain tensioner assembly, followed by the No. 2 camshaft by loosening the camshaft timing set bolt and uniformly removing the 10 bearing cap bolts in the specified sequence.

Rotate the crankshaft clockwise again until they align.

Install them into the camshaft housing sub-assembly RH, ensuring the marks and numbers on the bearing caps are correctly positioned.

While holding the No. 2 camshaft, remove the camshaft timing sprocket set bolt and then the camshaft timing sprocket with the timing chain still attached.

Apply engine oil to the threads and under the heads of the bearing cap bolts, then uniformly tighten the 10 bearing cap bolts in the specified sequence, with No. 1 Bearing cap at 30 Nm (301 kgf-cm, 22ft-lbf) and No. 3 Bearing cap at 9.0 Nm (92 kgf-cm, 80in-lbf).

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 remove the 2 bolts, chain tensioner, and gasket.

Remove the camshaft housing sub-assembly RH by prying it out carefully.

Apply seal packing, position the knock pins, and install the housing with the specified torque.

Remove the bolt and chain tensioner slipper, followed by the chain sub-assembly, and the 2 bolts and chain vibration damper.

Install it with a new gasket at 10 Nm (102 kgf-cm, 7 ft-lbf) and remove the pin from the stopper plate.