Removing
1. Remove the valve cover.
2. Remove the ignition distributor.
3. Remove the timing belt covers, the belt itself and the camshaft sprocket.
4. Measure the free play of the camshaft using a special tool, if necessary, replace the camshaft thrust plate, camshaft and cylinder head.
1.6 L Models
5. Number all parts before removal.
6. Loosen the rocker bolts in the sequence shown (SOHC).
7. Remove axes of yokes together with yokes.
8. Remove the air filter and fuse box.
9. Remove the camshaft from the cylinder head. Remove the seal.
1.8 L Models
10. Remove the camshaft sprocket bolts and remove the sprocket.
11. Loosen the bearing cap bolts in the sequence shown (1.8L DOHC). Remove covers.
12. Take into account the installation position of the oil seals.
13. Remove camshafts and seals.
14. Take out the hydraulic valve adjusters or lifters and put them in separate numbered boxes.
Examination
1. Inspect all parts for scratches and damage.
1.6 L Models
2. Inspect the surface of the rocker arms in contact with the camshaft cams for heavy wear and scratches. Replace rockers if necessary.
3. Inspect the surface of the rocker shaft and the inner surface of the rocker holes. If possible, measure the diameter of the rocker holes and the diameter of the rocker shaft.
4. Calculate clearance. Replace axles and rocker arms if necessary.
5. Measure the inner and outer diameters of the camshaft bearings and calculate the lubrication gap.
6. Measure the camshaft lobes.
1.8 L Models
7. Check the lubrication clearance of each camshaft bearing. Clean bearings and bearing caps with solvent. Install the shafts.
8. Place a strip of measuring plastic on each bearing.
9. Install bearing caps. Tighten the cap bolts in the sequence shown.
10. Unscrew bolts in the specified sequence and remove covers.
11. Compare the width of the compressed strip with the measurement chart.
12. If necessary, replace the camshaft or cylinder head. Clean off any leftover plastic.
13. Check hydraulic valve lifters (1.8 l), replace them if necessary.
14. Measure the outer diameters of the tappets or hydraulic lifters and the diameters of their bores. Replace worn parts if necessary.
15. Inspect cams and shaft bearings.
16. Measure the diameters of the shaft bearings. Replace shaft if necessary.
17. Measure the height of each cam. Replace shaft if necessary.
18. Replace all parts that are out of specification.
Installation
1.6 L Models
1. Lubricate the camshaft oil seal with engine oil.
2. Install the seal.
3. Apply grease to the cams and shaft bearings.
4. Install the camshaft to the cylinder head.
5. Lubricate the O-rings of the hydraulic regulators with oil.
6. Install the adjusters into the rocker arms.
7. Put the rocker arms on the axles.
8. Insert mounting bolts.
9. Align the oil holes on the rocker shaft and cylinder head.
10. Tighten the rocker arm mounting bolts in the sequence shown.
11. Install the camshaft sprocket and tighten the bolt.
12. Put on the timing belt.
13. Install the remaining parts.
1.8 L Models
14. Lubricate the tappets with engine oil and install them in place.
15. Lubricate bearings and camshaft cams. Install the shafts. Install the chain and align the timing marks of the sprockets of the shafts with the marked links of the chain.
16. Apply silicone sealant to the shaded areas.
17. Install the bearing caps and tighten the bolts in the sequence shown.
18. Lubricate the new seals with oil and install them in place.
19. Install the shaft sprockets.
20. Put on the timing belt.
21. Install remaining parts and check engine operation.