2. When the head is returned from the workshop, the valves and associated components will already be installed in it. In this case, you should skip the procedures of the next two paragraphs and proceed directly to the actions described in paragraph 5.
3. Lubricate the valve stems with light oil and thread them into their guide bushings. Install the valve spring seats.
Note. On SOHC engines for each of the valve springs (internal and external) a separate seat is provided. The outer spring seat must be installed first, then the inner spring seat. Through the valve stems, put new oil seals on the guide bushings.
On DOHC engines, valve stem seals "planted" onto their guide bushings by gently tapping with a hammer through a suitable mandrel or socket head of a suitable size. On SOHC engines, a special tool must be used to fit the intake valve caps, exhaust valve caps can be planted by hand. Make sure that the caps are not twisted on the bushings.
4. Install the valve spring on the stem (s) and her plate. Compress the springs with a special tool, lowering the plate, then install the crackers of the split lock into the opened upper groove on the valve stem. In order to temporarily fix the crackers before releasing the tool, lubricate them from the inside with a thick lubricant. Release the spring slowly (s) and make sure the crackers fit securely.
Note. On SOHC engines, each valve is equipped with two springs. First, you should put the inner spring into the outer one, then the complete assembly sits on the valve. On all engines, the springs are installed with an end face with a reduced pitch of turns to the head.
5. On DOHC engines, reinstall the valve lifters and camshafts.
6. On SOHC engines, install camshafts, pushrod guide assembly, and rocker arms with axles.
7. Make sure that the old components removed from the head for further use are installed strictly in their original places.