Turning the crankshaft clockwise, set the camshaft to the position where..
... mark on the asterisk (hole on the side of the body) camshaft..
…must align with the projection on the bearing housing.
Wherein…
... mark on the pulley (drilling) crankshaft..
... must align with the protrusion on the camshaft drive cover.
For clarity, in the photo 1-4, the parts were removed from the engine.
Bend the edge of the lock washer of the camshaft sprocket bolt with a chisel (for clarity, the hoses of the outlet pipe of the cooling jacket are disconnected).
ring wrench «at 17» unscrew the bolt securing the camshaft sprocket.
Remove bolt with washers.
To loosen the chain tension, unscrew the nuts securing the hydraulic tensioner to the cylinder head (see Removing the hydraulic tensioner for the camshaft drive chain and its pipeline on an injection engine). At the same time, we do not open the tensioner hydraulic drive tube.
To prevent the chain from jumping, we tie it to the sprocket and remove the sprocket with the chain from the camshaft.
head «at 13» unscrew the middle nut securing the camshaft bearing housing and the oil supply frame to the hydraulic bearings.
Remove the frame bushing from the stud...
... and, turning, we remove the curved part of the frame from the bearing housing.
Having unscrewed eight more nuts securing the camshaft bearing housing to the cylinder head,...
... remove the housing assembly with the camshaft from the studs.
Remove the valve lever.
ring wrench «on 10» unscrew the two nuts securing the camshaft thrust flange to the bearing housing...
...and remove the flange.
Remove the camshaft from the bearing housing.
We assemble in the reverse order. We lubricate the beds of the camshaft bearing housing and the working surfaces of the valve drive levers with engine oil. When mounting the bearing housing, make sure that the mounting sleeves (on the extreme fixing pins on the left side) fit into the bearing housing seats without distortion.
Tighten the bearing housing mounting nuts in the sequence shown in the figure.
The procedure for tightening the nuts of the camshaft bearing housing.