Contents: Removal ⇓ Installation ⇓
Removal
Bolt tightening sequence
1. Remove the cylinder head cover.
2. Remove the ignition distributor.
3. Remove the timing belt and camshaft sprockets.
4. Measure the free play of the shafts using a special device. If the free play exceeds the permissible limits, replace the camshaft and/or thrust plates or the cylinder head.
5. Using the reverse sequence of tightening, loosen in several approaches (1/4 turn each) camshaft bearing cap bolts (see figure Bolt tightening sequence).
6. Remove the lids and arrange them in order. All lids must be numbered and marked with the letters I (intake valve shaft covers) или E (exhaust valve shaft covers).
7. Remove the camshaft.
8. Remove the tappets using a magnet.
9. Place the tappets in order to avoid mixing them up during installation.
Caution: Hydraulic tappets should be kept upside down in clean engine oil.
10. Clean the camshafts thoroughly and remove their seals.
Installation
1. Apply molybdenum grease to the lifters and install them in place.
2. Apply molybdenum grease to the camshaft lobes and bearing journals.
3. Install the shafts into the head. Install the shaft bearing caps and insert the bolts.
4. Before installation, do not forget to apply sealant to the surface of the first cover that meets the head.
5. Using the sequence shown, tighten the cover bolts in several stages (1/4 turn each) (see figure Bolt tightening sequence).
6. Install new camshaft seals.
7. Install the remaining parts and test the engine operation. If any extraneous sounds occur, check the tappets (see subsection 3.1.10) or contact a specialist.
(Article is based on website data: www.MAZbook.ru)