How to install the camshaft timing gear assembly, camshafts, timing chain, chain tensioner, cylinder head cover, ignition components, and complete final checks including torque specifications and sealing procedures on Toyota Tacoma?

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The installation procedure requires placement of the key groove and straight pin followed by light gear pressure against the camshaft and simultaneous gear turning as well as pushing at the groove insertion point while avoiding retard angle movement of the camshaft timing gear. The gear fringe must have no clearance from the camshaft while you tighten the fringe bolt to 78 Nm with torque and verify the camshaft timing gear movement into the extreme retard position. Put fresh engine oil on the camshaft cam section and cylinder head journals before installing the chain on the timing gear with painted markings directed toward the timing position while adjusting both camshafts correctly. Before final installation who should install the No. 1 camshaft bearing cap while checking that each No. 2 camshaft bearing cap occupies its proper position. Then place a new O-ring on the No. 1 camshaft bearing cap. Install the provisionary camshaft oil delivery pipe before tightening its mounting bolts according to the sequence and torque specifications of 12 Nm and 16 Nm. First check that each timing mark is correctly positioned then install the timing chain onto the camshaft timing gear and align the No. 2 camshaft straight pin with the camshaft timing gear straight pin hole before reducing the No. 2 camshaft rotation by using the hexagonal lobe when necessary. Attach an adjustable wrench to the hexagonal lobe while tightening the bolt to 78 Nm (795 kgf-cm, 58 ft-lbf). Using Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent apply adhesive to 2 or 3 threads of the head straight screw plug on the timing gear case before installing it with a 10 mm socket hexagon wrench to 17 Nm (170 kgf-cm, 12 ft-lbf) torque. A new O-ring should be installed on the camshaft bearing cap followed by the timing chain guide which must receive two bolts tightened to 10 Nm (102 kgf-cm, 7 ft-lbf). Install Toyota Genuine Seal Packing Black or Three Bond 1207B or an equivalent product at designated sites while ensuring surface oil removal before putting the cylinder head cover in place within three minutes and avoiding oil application for at least two post-installation hours. The cylinder head cover requires provisional bolt-on installation with 19 bolts together with 2 nuts. Begin by tightening bolts A to 9.0 Nm (92 kgf-cm, 80 in-lbf) then apply identical torque on nuts and bolts B before repeating the torque sequence for bolts A. Connect the ventilation hose followed by ignition coil bolt-on at 9.0 Nm (92 kgf-cm, 80 in-lbf) and engine wire harness clamp application and finally connect the camshaft position sensor connector, VSV connector, throttle with motor body connector, and ignition coil connectors. For the last step install Installation requires the under cover of the No. 1 engine secured with four bolts up to 30 Nm (306 kgf-cm, 22 ft-lbf) torque then the cable needs a 3.9 Nm (40 kgf-cm, 35 in-lbf) torque connection to the negative battery terminal. Before finishing the work add engine coolant while confirming no coolant or oil leakage occurs.

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