Toyota 13711-42020 Valve, Intake

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Because of the requirement to access some confined and tiny areas that demand specific tools and gear, a valve job, which entails the servicing of the valves, valve seats, and valve guides, should preferably be handled by a professional. At home, the home mechanic can take off the head and in many cases, do first washing and checking only, then put it back together and take it to the dealer service division or auto machine shop for actual service. Performing the inspection is necessary to know the conditions of HEAD and valve train parts, required work, and new parts helping to communicate with an automotive machine shop. The skills involved in the operation of the trader service section or the automotive machine shop may consist of the removal of valves and springs, reconditioning or replacement of valves and valve seats, reconditioning of valve guides, checking and replacement of used, worn or damaged valve springs, spring retainers, rotators and keepers, replacement of valve seals, reassembling of valves and confirmation of the correct installed spring height. Also the surface of the cylinder head gasket will also be machined if is warped. Once a professional has done the valve job, the head will be as good as new just like it was/should be. Before reinstallation of the head on the engine, it is necessary to clean it once again to remove all the metal particles and abrasive particles which might have remained after valve service or head resurfacing operations, To blow all the oil holes and passages, it is desirable to use compressed air, if it is available.