Fig. 2-53. Section of the cylinder head along the exhaust valve: 1 - cylinder head; 2 - exhaust valve; 3 - oil deflector cap; 4 - valve lever, 5 - camshaft bearing housing; 6 - camshaft 7 - adjusting bolt; 8 -bolt lock nut; A - clearance between the lever and the camshaft cam
Adjust the gaps on a cold engine, having previously adjusted the chain tension. After adjustment, the gap should be 0.14-0.17 mm.
Make adjustments in the following order:
- turn the crankshaft clockwise until the mark on the camshaft sprocket coincides with the mark on the bearing housing, which will correspond to the end of the compression stroke in the fourth cylinder. In this position, the clearance at the exhaust valve of the 4th cylinder is adjusted (8th cam) and the intake valve of the 3rd cylinder (6th cam);
- loosen the lever adjusting bolt lock nut;
- insert a flat feeler gauge A.95111, 0.15 mm thick, between the lever and the camshaft cam and use a wrench to tighten or loosen the bolt, then tighten the lock nut until the feeler gauge enters with a slight pinch when the lock nut is tightened (Fig. 2-54);
- after adjusting the clearance at the exhaust valve of the 4th cylinder and the intake valve of the 3rd cylinder, sequentially turn the crankshaft 180° and adjust the clearances, observing the sequence indicated in Table 2-5.
Fig. 2-54. Checking the clearance between the levers and the camshaft cams: 1 - dipstick A.95111; 2 - adjusting bolt; 3 - adjusting bolt lock nut
