Rocker Assembly Components (VTEC models)
A - Fifth camshaft holder; B - Exhaust valve rocker (IN); C - Axle spring of rocker arms of exhaust valves; D - Secondary intake valve rocker arm; E - Intermediate rocker of exhaust valves; F - Pistons; G - Primary intake valve rocker; H - Distribution plate; I - Exhaust valve assembly spring; J - First camshaft holder
Withdrawal
1. Remove the cylinder head cover (see Section Removal and installation of a cover of a head of cylinders).
2. Bring the piston of the first cylinder to the TDC position (see Section Bringing the piston of the first cylinder to the top dead center position (TDC)), remove the timing belt (see Section Removing, checking the condition and installing the gas distribution belt and timing gears).
3. Loosen the camshaft bearing cap bolts 1/4 turn (to weaken the force developed by the valve springs), - proceed in the reverse order shown in the illustration.
4. Remove the rocker arm assembly with axles from the cylinder head. The camshaft bearing cap bolts will keep the assembly from falling apart.
Examination
1. Having removed the rocker arm assembly, it would be wise to disassemble it in order to examine the condition of the components in more detail. Turn out fixing bolts and remove from axes of a yoke, springs and covers of bearings. It would be wise to pre-mark the position of the axles in relation to the bearing caps.
Attention! On VTEC-equipped engines, it is wise to secure the primary and secondary intake valve rocker arms with rubber bands. Try to fold the removed components in the order of their installation, since during assembly they must be planted strictly in their original places.
2. Thoroughly clean the components and inspect them for signs of wear and damage. Assess the condition of the surfaces of the rocker arms in contact with the camshaft. Check for nicks and signs of excessive wear on the rocker arm mounting surfaces on the axles, as well as the walls of the rocker arm mounting holes. Defective components must be replaced. Also make sure that the oil flows inside the axles are open.
Note. On VTEC models, the rocker arms are equipped with roller tips. Evaluate the degree of wear and freedom of rotation of the rollers.
3. On VTEC-equipped engines, remove the valve clearance adjusters from their seats in the cylinder head and clean them thoroughly. Use your fingers to check the freedom of movement of the plungers.
Installation
1. Lubricate all components with clean engine oil and install them in their regular places on the rocker axles.
Note. Pay attention to the markings that distinguish left-handed components from right-handed ones.
2. Grease cams and necks of a camshaft with special adjusting greasing. Apply a thin layer of anaerobic sealant to the surfaces of the first and sixth camshaft bearing caps mating with the cylinder head, then install the rocker arm assembly in its original place.
3. In a strictly defined order, in several stages, tighten the bolts of the camshaft covers with the required force.
4. Install the remaining components in the reverse order of their dismantling.
5. In conclusion, do not forget to adjust the valve clearances (if there is a need) (see chapter Settings and ongoing maintenance).
6. Start the engine and check for signs of oil leaks and normal operation.