How to remove and install Camshaft and Rocker Arm in 3.5L V6 engine on Toyota Sienna?

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This procedure is a bit complicated and therefore, any person who feels that he or she is capable of performing the activity at home should first go through the following procedure very carefully. However, to service this component the manufacturer advises that the engine and transaxle assembly is removed. This is simply done by first disconnecting one end of the cable that is grounded on the negative terminal of the battery followed by the draining of both the engine oil and the coolant. SLine off the timing chains and sprockets. In order to remove camshafts from the right cylinder head, turn them counter clockwise until intake cam lobe for No. 1 cylinder is at 12 o'clock position and exhaust cam lobe is at 3 o'clock position. To a point, the maintenance engineer should unstretch and unscrew the other small caps of the bearing and the other housing bolts in a thread pattern that is the reverse of the earlier tightened ones. Belay all bearing caps as well as the camshafts, while organizing the parts, perhaps with the help of labels. Disconnect the camshaft housing from the cylinder head with the necessary force, and then unbolt all the rocker arms and the lash adjusters, but before that, number them so that they can be easily replaced. If camshafts were removed from the other cylinder head, do the same for this head with the front camshaft lobes facing forward. Check each rocker and lash adjuster for signs of wear, look for any signs of damage on the cam lobes and bearing journals and take the height of each camshaft lobe and the diameter of each journal to the nearest thousandth with the help of a micrometer if it is not to standard. Oil clearance for each camshaft journal should be checked using Plastigage where the components should be cleaned and procedure of installing Plastigage followed. Coat the interior of the lash adjuster bores and the lash adjusters lightly with oil before reinstalling the lash adjusters, and then reinstall the rocker arms in their former positions. For the right side, the procedures include camshaft journals lubrication, camshafts installation with the proper orientation, as for the upper bearing caps they also require oil application before they are tightened. Clean sealing surfaces and apply RTV silicone sealer before finally installing camshaft housing assembly, and fastening the mounting bolts. Perform the same process in lubrication and installation to the left side of the car, except for the bolts, which are different in number. As it is, reverse all the things done during removal process, add oil and coolant to the engine, reconnect the battery, start the engine, and examine whether there is any leakage and allow time for loud lifter knock to cease.

Genuine Toyota Sienna Rocker Arm

4 Rocker Arms found

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Toyota Sienna Arm Sub-Assembly, Valve

Toyota Sienna Arm Sub-Assembly, Valve Rocker

Toyota Sienna Arm Sub-Assembly, Valve

Toyota Sienna Rocker Arm

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