Contents: Removal ⇓ Installation ⇓
Note: If the timing parts are to be reused, they must be installed in the same positions. To avoid confusion, it is recommended to make a special storage box.
Removal
Remove the timing belt.
Loosen and unscrew the camshaft bearing cap bolts evenly to avoid bending the camshafts. Arrange the bearing caps in the correct order.
(Based on website data: «Mazbook.ru»)
Carefully remove the camshafts and place them aside.
Installation
Lubricate the camshafts and camshaft bearings with clean engine oil before installation.
Position the camshafts in the position corresponding to the TDC of the first cylinder. Make sure that none of the camshaft lobes are directed vertically downwards, otherwise the valves may rest against the pistons.
Note: The exhaust camshaft has an additional cam for operating the camshaft position sensor.
Lubricate the first bearing cap and the mating sealing surface on the cylinder head with a thin layer of sealant 2 to 3 mm wide.
Tighten all bearing cap bolts in the sequence shown (see picture above) first with a torque of 6 Nm, and on the second pass - with a torque of 15 Nm.
Lubricate the new camshaft seals with clean engine oil. For installation, use a device similar to the one shown in the figure or a pipe with a diameter equal to the diameter of the seal. Install the pipe on the seal and, tapping it evenly with a rubber hammer, drive the seal in until it stops.
Install the timing belt and the parts removed from the engine.