Removing the camshaft
Remove the cylinder head cover
Disconnect the block of the engine management system wiring harness from the phase sensor and the coolant temperature sensor.
Using the “10” wrench, we unscrew two nuts 1 and one bolt 2 fastening the cylinder head plug.
There is a rubber o-ring under the head of the bolt.
Remove the cylinder head plug together with the sensor.
A rubber sealing ring is installed in the groove of the plug flange.
Remove the camshaft pulley
Using the “13” key evenly, in several steps (until the pressure of the valve springs is relieved), we unscrew the ten nuts securing the camshaft bearing housings.
Remove both camshaft bearing housings from the studs
Slightly moving the rear cover of the timing belt away from the cylinder head, remove the camshaft.
Remove the oil seal from the toe of the camshaft.
Install the camshaft in the following sequence:
We clean the mating surfaces of the cylinder head and bearing housings from old sealant and oil.
Lubricate the bearing journals and camshaft cams with engine oil
We lay the shaft on the cylinder head supports so that the cams of the first cylinder are directed upwards.
In this case, the pistons of the 1st and 4th cylinders must be at TDC
On the surfaces of the cylinder head mating with the bearing housings in the area of the extreme supports, we apply a thin layer of silicone sealant.
We install the bearing housings and tighten the nuts of their fastening in two steps
Pre-tighten the nuts in the sequence shown in the figure until the surfaces of the bearing housings touch the cylinder head.
In this case, it is necessary to ensure that the mounting sleeves of the housings fit freely into their sockets
The order of tightening the nuts of the camshaft bearing housings
Finally tighten the nuts in the same sequence
After tightening the nuts, carefully remove the remnants of the sealant squeezed out of the gaps.
We press in a new camshaft oil seal.
Before installation oh plugs, we put an o-ring on it.
Check the clearances in the valve mechanism. (The clearances must be checked, especially if the distribution details have changed. To do this, see the article - "Adjusting valve clearances")
Further assembly is carried out in reverse order