Normally, you don’t have to maintenance the camshafts or valves in a Toyota VVTi engine's lifetime, as they are built to last for a long period. However, if something goes wrong and you need to do it, here’s a tutorial on how to remove the camshafts.
The operation is pretty complex and you will need a garage, a complete set of tools, a jack and some gloves if you don’t want to get dirty. Here are the steps:
Open the hood and remove the engine plastic cover
Disconnect the battery and the electrical connections from the ignition coils
Start removing the camshafts’ bearings from the outer regions first. Gradually unscrew their bolts starting from the outermost ones towards the center
Take a closer look at the bearings inscriptions so you can mount them back in the right order.
This is a DIY guide and, as such, you must be aware the procedures described here involve some risks. autoevolution cannot be held responsible for any possible damage that might result while following this guide.
Google News