Impreza WRX STI F4-2.5L DOHC Turbo (2007)
(2) Apply a thin coat of engine oil to cap bearing surface, and install the cap to the camshaft.
(3) Gradually tighten the camshaft cap and oil control valve assembly in at least two stages in alphabetical order shown in the figure, and then
tighten to specified torque.
(4) After tightening the camshaft cap, ensure the camshaft rotates only slightly while holding it at base circle.
3) Apply a coat of engine oil to oil seal periphery and oil seal lips and install the oil seal on camshaft using ST1 and ST2.
NOTE:
Use a new oil seal.
ST1 499587600 OIL SEAL INSTALLER
ST2 499597200 OIL SEAL GUIDE
4) Install the rocker cover.
(1) Install the gasket on rocker cover. Install the peripheral gasket and ignition coil unit gasket.
NOTE: Use a new gasket.
(2) Apply liquid gasket to the specified point of the cylinder head.
NOTE: Apply extra liquid gasket around semicircular plugs 5 mm (0.2 in) or more.
