Remove the top part of the timing belt cover.
Remove the cylinder head cover.
Loosen the timing belt tensioner and remove the belt.
If necessary, replace the intake camshaft, remove the timing pulley,
Using a scriber, remove the spring washer from the cavity in the end of the shaft.
Mark the direction of movement of the intake camshaft drive chain. Otherwise, increased wear of the chain will occur.
To identify, mark the outside of the chain (for example with paint).
Warning: Never use a center punch for this!
Remove the inlet camshaft bearing caps: first caps 5, 7, and also the rearmost one (figure 171).
Then gradually loosen covers 6 and 8 crosswise.
On the exhaust camshaft, remove covers 1 and 3, as well as the rearmost one.
Gradually remove covers 2 and 4 in a crisscross pattern.
Remove the camshafts. If possible, do not change the position of the chain sprockets.
The sprockets should not be removed from the camshaft.
When installing the drive chain, pay attention to the direction of travel mark.
The round stamped marks on the camshaft sprockets should be at the same height as the top edge of the cylinder head (arrows in figure 172).
Install the camshaft caps. They have notches in them that should face forward (in the direction of movement).
Tightening of the cover bolts should be carried out in the reverse order of disassembly, taking into account the following:
- Insert the spring washer into the recess of the exhaust camshaft.
- Install the camshaft timing pulley and tighten it to 65 Nm.
- Install the timing belt and adjust the valve timing.
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