Front oil seal
1. Remove the auxiliary drive belt, referring to Chapter 7.
2. Remove the timing belt tensioner and camshaft sprocket (see chapter 6).
3. Turn off bolts of the bottom cover of a gear belt.
4. Turn off bolts and remove an internal cover of a gear belt.
5. Remove the camshaft cover as described in Chapter 8.
6. There are two methods for removing the oil seal. The first is to use a screwdriver to gently pry the oil seal off, being careful not to damage the surface of the camshaft. Clean the seal seat in the bearing cap, then apply a small amount of oil to the sealing lips of the new seal. Wrap the end of the camshaft with duct tape, then install the new oil seal and carefully slide it into position, resting the tubular drift or socket against its hard outer edge (see illustrations). Finally, remove the tape.
7. If the seal cannot be removed from the bearing cover, use the second method. Next, do the following:
- a) Loosen the nuts and remove the #1 camshaft bearing cap, then remove the old camshaft oil seal.
- b) Lubricate the surface of the new camshaft oil seal with clean engine oil and install it on the end of the camshaft.
- c) Apply a thin coat of suitable sealant to the contact surface of the bearing cap, then install the cap making sure that the seal is fully seated on the bearing surface on the cylinder head and cap. Gradually tighten the mounting nuts with a tightening torque specified specifications.
8. Install the camshaft cover, following Chapter 8.
9. Establish an internal cover of a gear belt and tighten bolts.
10. Establish the bottom cover of a gear belt and tighten bolts.
11. Install the camshaft sprocket and timing belt tensioner (see chapter 6).
12. Install auxiliary drive belt (see chapter 7).
Rear oil seal
13. Remove the camshaft cover as described in Chapter 8.
14. Remove the fuel pump drive belt as described in Chapter 5. On 3D engines, this procedure involves removing the rear camshaft sprocket.
15. On 1T engines, loosen the camshaft sprocket bolt by inserting a suitable tool into its holes. Remove the bolt and remove the sprocket from the shaft.
16. Next, do the following:
- a) Loosen the nuts and remove the #1 camshaft bearing cap, then remove the old camshaft oil seal.
- b) Lubricate the surface of the new oil seal with clean engine oil and install it on the end of the shaft. In order not to damage the oil seal during installation, first wrap the end of the shaft with adhesive tape.
- With) Apply a thin coat of suitable sealant to the contact surface of the bearing cap, then install the cap making sure that the seal is fully seated on the bearing surface on the cylinder head and cap. Gradually tighten the mounting nuts with a tightening torque specified specifications.
17. Install the camshaft sprocket, then tighten the camshaft sprocket bolt to the specified torque while holding the sprocket stationary.
18. Install the fuel pump drive belt (see chapter 5).
19. Install the camshaft cover (see chapter 8).
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