Contents: Removal ⤓ Installation ⤓
Correct positioning of rollers during assembly
1. Notch; 2, 8. Roller B; 3, 7. Roller A; 4. Number; 5. Type P; 6. Lubrication hole
Removal
1. Disconnect the ground. Remove the head cover and the upper timing belt cover.
Loosen the camshaft bolt.
2. Set the piston of the 1st cylinder to TDC by turning the crankshaft until the mark on the crankshaft pulley aligns with the line on the scale of the front cover.
3. Loosen the camshaft bolt and, without allowing the crankshaft to rotate or the belt to loosen, place the sprocket on the holder in the front cover or in the belt cover. Place special brackets on 8 hydraulic tappets (the bracket for holding the hydraulic tappet is indicated by the arrow).
4. Evenly and gradually loosen the camshaft journal cover bolts, unscrew the bolts, and, holding them by the opposite ends, remove the shafts with the rocker arms.
Installation
1. Unscrew the bolts securing the rollers to the bearing journal covers and remove the covers, rocker arms, springs and washers. Store all removed parts in the order they were installed.
2. Check the condition of the rocker arm contact surfaces, replace the rollers and/or rocker arms if the gap between these parts is too large. Replace faulty tappets, to do this remove the bracket (the pusher will fall out) and insert the new pusher, securing it again with the bracket.
3. Assemble the rollers with covers in the following order:
- insert the rollers into the front camshaft cover so that the notches on the rollers are facing up;
- tighten the roller mounting bolts (the left roller is longer than the right one);
- install the spring washer onto the left shaft.
4. Lubricate the rocker arms, springs and washers with engine oil and reassemble in the same order with the camshaft covers (rocker arms of cylinders 1, 3 and 2, 4 are marked).
After installing each group of parts, secure the corresponding cover with bolts.
5. Then assembly is carried out in reverse order. Tighten the rocker arm shaft mounting bolts to 19–20 N·m. Tighten the sprocket bolt to 80 N·m. (the pin on the sprocket must enter the hole in the end of the camshaft, do not loosen the belt tension during installation). Adjust the jet valves.