Cylinder Head - Assembly (Cont'd)
EM-122prose procedureValve spring paint mark differs by engine and inner/outer spring. Hydraulic lash adjuster check is SR20DE only; SR20DET uses rocker pivots instead of hydraulic lash adjusters.
Assembly (Cont'd)
IMPORTANT
Always use new valve oil seal. Refer to OIL SEAL REPLACEMENT.
Before installing valve oil seal, install valve spring seat.
Install valve spring (uneven pitch type) with its narrow pitched side toward cylinder head side (paint mark).
Valve spring paint mark
Paint mark
SR20DEGreen
SR20DET InnerNo color
SR20DET OuterPink
IMPORTANT
After installing valve component parts, use plastic hammer to lightly tap valve stem tip to assure a proper fit.
Check hydraulic lash adjusters (SR20DE only)
- 8Check hydraulic lash adjusters. (SR20DE only)(1) When rocker arm can be moved at least 1 mm (0.04 in) by pushing at hydraulic lash adjuster location, it indicates that there is air in the high pressure chamber. Noise will be emitted from hydraulic lash adjuster if engine is started without bleeding air.(2) Remove hydraulic lash adjuster and dip in a container filled with engine oil. While pushing plunger as shown in figure, lightly push check ball using a thin rod. Air is completely bled when plunger no longer moves.Air cannot be bled from this type of lash adjuster by running the engine.
SEM093D - 9SR20DE: Install rocker arms, shims, rocker arm guides and hydraulic lash adjusters. SR20DET: Install rocker arms, rocker arm guides and rocker pivots.CAUTION: Install all parts in their original positions.
SEM202D
See also
OIL SEAL REPLACEMENT