Note: If necessary, temporarily install the camshaft before installing the hydraulic tappets (s) and check the side play of the camshaft (see specs).
1. Lubricate the hydraulic tappets, insert them into the pre-marked positions.
10 valve engines
2. Lubricate the bearing journals on the camshaft, then lower the camshaft into place on the pushrods, making sure the lobes of cylinder #1 are pointing up.
3. Install bearing caps #2 and #4, torque nuts in diagonal sequence to specification. Make sure caps are correctly oriented as noted when removed because they are slightly misaligned.
4. Install bearing caps #1 and #3 in the same way.
Engine with 20 valves
5. Lubricate the bearing journals on the camshafts.
6. Install the chain on the sprockets as follows. so that the marks are positioned as shown in Fig. 1.20, then lower the camshafts into place.
7. Install bearing caps No. 6, 8 and 10, tighten the nuts in a diagonal sequence with the torque specified in the Specification.
8 Install bearing caps No. 7 and 9 in the same way, then bearing caps No. 1,3 and 5, and finally caps No. 2 and 4.
All engines
9. Lubricate the lugs and outer rim of the new oil seal. Position it on the front end of the camshaft, hammer it into place with a socket and a mallet until it is aligned with the surface of the cylinder head. Make sure that the oil seal does not block the oil return hole.
10. Position the keyway then install the camshaft sprocket. Insert and tighten the central bolt with a tightening torque specified specification.
11. Install the timing belt as described in Chapter 40.
12. Install the valve cover with new gaskets.
13. Restore the actions of the preliminary procedure given at the beginning Chapter 35. If at least one hydraulic tappet has been replaced, do not start or crank the engine for the next thirty minutes. There may be excess oil in the tappet, causing the valve to hit the piston.
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