Remove heatsink and fan.
On vehicles with air conditioning, remove the compressor together with the pipes and set aside.
Remove cylinder head cover.
Remove the exhaust camshaft rocker arms.
Rotate the crankshaft to TDC on the number one cylinder.
Remove the crankshaft pulley and damper as described in section 3.7.
Remove chain tensioner. Remove tensioner spring.
Mark the chain and sprockets with paint, as shown in fig. 91.
Pic. 91. Marking the sprocket and drive chain.
Holding the right camshaft in the middle with a wrench, unscrew the sprocket mounting bolt.
Without removing the drive chain, remove the sprocket from the right camshaft.
Remove the chain guide from the camshaft housing (section 3.10.4).
Using an impact tool, remove the tensioner shoe axle.
Remove tensioner shoe. Check for wear and damage on the running surface of the shoe and replace if necessary. Use a screwdriver to remove the cover from the shoe. Install a new cover in the groove and fix it.
Install the tensioner shoe in the reverse order of removal.
Cover the shoe axle flange with sealant and place it in the cylinder block until it stops. Align the marks on the chain and sprocket, put the sprocket on the camshaft. While holding the camshaft from turning, tighten the mounting bolt and tighten to 80 Nm.