Withdrawal
1. Remove valve covers (see section 4) from the cylinder head.
2. Unscrew the rocker arms one by one and disconnect the rocker arms, bearings and bearing retainers (see illustration). Place a set of parts for each rocker arm separately in the labeled plastic bags so as not to scare them in places when installing the assembly.
5.2. Rocker arm details: 1 - bolt, 2 - rocker arm support, 3 - rocker arm, 4 - rod guide
3. After removing the rods, store them separately so as not to mix up during installation (see illustration).
5.3. If more than one rod is removed, store them in a perforated cardboard box to avoid confusion during installation. Pay attention to the inscription "Front of car"
Examination
4. Check each rocker arm for signs of wear, cracks, or other damage, especially where the valve stems and stems meet.
5. Check the condition of the bearings and faces of the bearings in all rocker arms. Look for signs of abrasion, cracks in stress areas, and unusual wear patterns. If the rocker arms are worn or damaged, replace them with new ones; install new supports at the same time.
6. Make sure that the holes in all rocker arms on the installation side of the valve lifters are not clogged.
7. Check the valve lifters for cracks and heavy wear. Roll each stem over the glass to see if it is bent.
Installation
8. Coat the lower ends of the valve lifter rods with a coat of engine oil or molybdenum based grease and install each in its place. Make sure each one is fully seated in its nest.
9. Apply a coat of molybdenum-based lubricant to valve stem ends, valve lifter rod top shanks, and valve bearing surfaces to prevent damage to mating surfaces before engine oil pressure reaches operating pressure.
10. Apply non-hardening thread lubricant to the rocker arm support bolts. Reinstall rocker arms, supports, support retainers and insert bolts; tighten the bolts to the torque specified in section "Technical data". When the bolts are tightened, check that the push rods are properly seated on the rocker arms.
11. Install the valve covers (see section 4).