9-3 FWD (9440) L4-2.0L Turbo (B207R) (2009)
31. Remove the camshaft sprockets. Use a spanner to grip the camshaft flats when the bolts are loosened. Lift up the chain.
32. Remove the tensioner guide by lifting it up. Inspect the condition of the guide. Replace if necessary.
To fit
1. Clean all sealing surfaces.
2. Clean the camshaft and sprocket contact surfaces from oil and grease.